pengjunjie/langflow
1
0
Fork 1
mirror of https://github.com/langflow-ai/langflow.git synced 2026-07-24 00:39:35 +08:00
Code Issues Packages Projects Releases Wiki Activity
Files
45f0f8591ab4c080ec873f16039ed95d89eb239b
langflow/environment-variables.html
Cristhianzl 45f0f8591a deploy: 37fc581472
2025-03-31 19:09:16 +00:00

126 lines
71 KiB
HTML
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

<!doctype html>
<html lang="en" dir="ltr" class="docs-wrapper plugin-docs plugin-id-default docs-version-current docs-doc-page docs-doc-id-Configuration/environment-variables" data-has-hydrated="false">
<head>
<meta charset="UTF-8">
<meta name="generator" content="Docusaurus v3.7.0">
<title data-rh="true">Environment variables | Langflow Documentation</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://docs.langflow.org/environment-variables"><meta data-rh="true" property="og:locale" content="en"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docusaurus_version" content="current"><meta data-rh="true" name="docusaurus_tag" content="docs-default-current"><meta data-rh="true" name="docsearch:version" content="current"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-default-current"><meta data-rh="true" property="og:title" content="Environment variables | Langflow Documentation"><meta data-rh="true" name="description" content="Langflow lets you configure a number of settings using environment variables."><meta data-rh="true" property="og:description" content="Langflow lets you configure a number of settings using environment variables."><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://docs.langflow.org/environment-variables"><link data-rh="true" rel="alternate" href="https://docs.langflow.org/environment-variables" hreflang="en"><link data-rh="true" rel="alternate" href="https://docs.langflow.org/environment-variables" hreflang="x-default"><link data-rh="true" rel="preconnect" href="https://UZK6BDPCVY-dsn.algolia.net" crossorigin="anonymous"><link rel="preconnect" href="https://www.google-analytics.com">
<link rel="preconnect" href="https://www.googletagmanager.com">
<script async src="https://www.googletagmanager.com/gtag/js?id=G-XHC7G628ZP"></script>
<script>function gtag(){dataLayer.push(arguments)}window.dataLayer=window.dataLayer||[],gtag("js",new Date),gtag("config","G-XHC7G628ZP",{anonymize_ip:!0})</script>
<link rel="preconnect" href="https://www.googletagmanager.com">
<script>window.dataLayer=window.dataLayer||[]</script>
<script>!function(e,t,a,n){e[n]=e[n]||[],e[n].push({"gtm.start":(new Date).getTime(),event:"gtm.js"});var g=t.getElementsByTagName(a)[0],m=t.createElement(a);m.async=!0,m.src="https://www.googletagmanager.com/gtm.js?id=GTM-NK5M4ZT8",g.parentNode.insertBefore(m,g)}(window,document,"script","dataLayer")</script>
<link rel="search" type="application/opensearchdescription+xml" title="Langflow Documentation" href="/opensearch.xml">
<link rel="stylesheet" href="https://fonts.googleapis.com/css2?family=Sora:wght@550;600&amp;display=swap"><link rel="stylesheet" href="/assets/css/styles.b2eb940a.css">
<script src="/assets/js/runtime~main.7c47ee98.js" defer="defer"></script>
<script src="/assets/js/main.ec942a35.js" defer="defer"></script>
</head>
<body class="navigation-with-keyboard">
<noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-NK5M4ZT8" height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
<script>!function(){function t(t){document.documentElement.setAttribute("data-theme",t)}var e=function(){try{return new URLSearchParams(window.location.search).get("docusaurus-theme")}catch(t){}}()||function(){try{return window.localStorage.getItem("theme")}catch(t){}}();null!==e?t(e):window.matchMedia("(prefers-color-scheme: dark)").matches?t("dark"):(window.matchMedia("(prefers-color-scheme: light)").matches,t("light"))}(),function(){try{const c=new URLSearchParams(window.location.search).entries();for(var[t,e]of c)if(t.startsWith("docusaurus-data-")){var a=t.replace("docusaurus-data-","data-");document.documentElement.setAttribute(a,e)}}catch(t){}}()</script><div id="__docusaurus"><div role="region" aria-label="Skip to main content"><a class="skipToContent_fXgn" href="#__docusaurus_skipToContent_fallback">Skip to main content</a></div><nav aria-label="Main" class="navbar navbar--fixed-top navbarHideable_m1mJ"><div class="navbar__inner"><div class="navbar__items"><button aria-label="Toggle navigation bar" aria-expanded="false" class="navbar__toggle clean-btn" type="button"><svg width="30" height="30" viewBox="0 0 30 30" aria-hidden="true"><path stroke="currentColor" stroke-linecap="round" stroke-miterlimit="10" stroke-width="2" d="M4 7h22M4 15h22M4 23h22"></path></svg></button><a class="navbar__brand" href="/"><div class="navbar__logo"><img src="/img/langflow-logo-black.svg" alt="Langflow" class="themedComponent_mlkZ themedComponent--light_NVdE"><img src="/img/langflow-logo-white.svg" alt="Langflow" class="themedComponent_mlkZ themedComponent--dark_xIcU"></div></a></div><div class="navbar__items navbar__items--right"><a href="https://github.com/langflow-ai/langflow" target="_blank" class="navbar__item navbar__link header-github-link"></a><a href="https://twitter.com/langflow_ai" target="_blank" class="navbar__item navbar__link header-twitter-link"></a><a href="https://discord.gg/EqksyE2EX9" target="_blank" class="navbar__item navbar__link header-discord-link"></a><div class="toggle_vylO colorModeToggle_DEke"><button class="clean-btn toggleButton_gllP toggleButtonDisabled_aARS" type="button" disabled="" title="Switch between dark and light mode (currently light mode)" aria-label="Switch between dark and light mode (currently light mode)" aria-live="polite" aria-pressed="false"><svg viewBox="0 0 24 24" width="24" height="24" class="lightToggleIcon_pyhR"><path fill="currentColor" d="M12,9c1.65,0,3,1.35,3,3s-1.35,3-3,3s-3-1.35-3-3S10.35,9,12,9 M12,7c-2.76,0-5,2.24-5,5s2.24,5,5,5s5-2.24,5-5 S14.76,7,12,7L12,7z M2,13l2,0c0.55,0,1-0.45,1-1s-0.45-1-1-1l-2,0c-0.55,0-1,0.45-1,1S1.45,13,2,13z M20,13l2,0c0.55,0,1-0.45,1-1 s-0.45-1-1-1l-2,0c-0.55,0-1,0.45-1,1S19.45,13,20,13z M11,2v2c0,0.55,0.45,1,1,1s1-0.45,1-1V2c0-0.55-0.45-1-1-1S11,1.45,11,2z M11,20v2c0,0.55,0.45,1,1,1s1-0.45,1-1v-2c0-0.55-0.45-1-1-1C11.45,19,11,19.45,11,20z M5.99,4.58c-0.39-0.39-1.03-0.39-1.41,0 c-0.39,0.39-0.39,1.03,0,1.41l1.06,1.06c0.39,0.39,1.03,0.39,1.41,0s0.39-1.03,0-1.41L5.99,4.58z M18.36,16.95 c-0.39-0.39-1.03-0.39-1.41,0c-0.39,0.39-0.39,1.03,0,1.41l1.06,1.06c0.39,0.39,1.03,0.39,1.41,0c0.39-0.39,0.39-1.03,0-1.41 L18.36,16.95z M19.42,5.99c0.39-0.39,0.39-1.03,0-1.41c-0.39-0.39-1.03-0.39-1.41,0l-1.06,1.06c-0.39,0.39-0.39,1.03,0,1.41 s1.03,0.39,1.41,0L19.42,5.99z M7.05,18.36c0.39-0.39,0.39-1.03,0-1.41c-0.39-0.39-1.03-0.39-1.41,0l-1.06,1.06 c-0.39,0.39-0.39,1.03,0,1.41s1.03,0.39,1.41,0L7.05,18.36z"></path></svg><svg viewBox="0 0 24 24" width="24" height="24" class="darkToggleIcon_wfgR"><path fill="currentColor" d="M9.37,5.51C9.19,6.15,9.1,6.82,9.1,7.5c0,4.08,3.32,7.4,7.4,7.4c0.68,0,1.35-0.09,1.99-0.27C17.45,17.19,14.93,19,12,19 c-3.86,0-7-3.14-7-7C5,9.07,6.81,6.55,9.37,5.51z M12,3c-4.97,0-9,4.03-9,9s4.03,9,9,9s9-4.03,9-9c0-0.46-0.04-0.92-0.1-1.36 c-0.98,1.37-2.58,2.26-4.4,2.26c-2.98,0-5.4-2.42-5.4-5.4c0-1.81,0.89-3.42,2.26-4.4C12.92,3.04,12.46,3,12,3L12,3z"></path></svg></button></div><div class="navbarSearchContainer_Bca1"><button type="button" class="DocSearch DocSearch-Button" aria-label="Search (Command+K)"><span class="DocSearch-Button-Container"><svg width="20" height="20" class="DocSearch-Search-Icon" viewBox="0 0 20 20" aria-hidden="true"><path d="M14.386 14.386l4.0877 4.0877-4.0877-4.0877c-2.9418 2.9419-7.7115 2.9419-10.6533 0-2.9419-2.9418-2.9419-7.7115 0-10.6533 2.9418-2.9419 7.7115-2.9419 10.6533 0 2.9419 2.9418 2.9419 7.7115 0 10.6533z" stroke="currentColor" fill="none" fill-rule="evenodd" stroke-linecap="round" stroke-linejoin="round"></path></svg><span class="DocSearch-Button-Placeholder">Search</span></span><span class="DocSearch-Button-Keys"></span></button></div></div></div><div role="presentation" class="navbar-sidebar__backdrop"></div></nav><div id="__docusaurus_skipToContent_fallback" class="main-wrapper mainWrapper_z2l0"><div class="docsWrapper_hBAB"><button aria-label="Scroll back to top" class="clean-btn theme-back-to-top-button backToTopButton_sjWU" type="button"></button><div class="docRoot_UBD9"><aside class="theme-doc-sidebar-container docSidebarContainer_YfHR"><div class="sidebarViewport_aRkj"><div class="sidebar_njMd sidebarWithHideableNavbar_wUlq"><a tabindex="-1" class="sidebarLogo_isFc" href="/"><img src="/img/langflow-logo-black.svg" alt="Langflow" class="themedComponent_mlkZ themedComponent--light_NVdE"><img src="/img/langflow-logo-white.svg" alt="Langflow" class="themedComponent_mlkZ themedComponent--dark_xIcU"></a><nav aria-label="Docs sidebar" class="menu thin-scrollbar menu_SIkG"><ul class="theme-doc-sidebar-menu menu__list"><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-1 menu__list-item"><a class="menu__link" href="/">Welcome to Langflow</a></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist menu__link--sublist-caret" role="button" aria-expanded="false" href="/get-started-installation">Get started</a></div></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist menu__link--sublist-caret" role="button" aria-expanded="false" href="/starter-projects-basic-prompting">Starter projects</a></div></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist menu__link--sublist-caret" role="button" aria-expanded="false" href="/tutorials-blog-writer">Tutorials</a></div></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist menu__link--sublist-caret" role="button" aria-expanded="false" href="/concepts-overview">Concepts</a></div></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist menu__link--sublist-caret" role="button" aria-expanded="false" href="/components-agents">Components</a></div></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist menu__link--sublist-caret" role="button" aria-expanded="false" href="/agents-overview">Agents</a></div></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist menu__link--sublist-caret menu__link--active" role="button" aria-expanded="true" href="/configuration-api-keys">Configuration</a></div><ul style="display:block;overflow:visible;height:auto" class="menu__list"><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-2 menu__list-item"><a class="menu__link" tabindex="0" href="/configuration-api-keys">API keys</a></li><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-2 menu__list-item"><a class="menu__link" tabindex="0" href="/configuration-authentication">Authentication</a></li><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-2 menu__list-item"><a class="menu__link" tabindex="0" href="/configuration-auto-save">Auto-saving</a></li><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-2 menu__list-item"><a class="menu__link" tabindex="0" href="/configuration-backend-only">Run Langflow in backend-only mode</a></li><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-2 menu__list-item"><a class="menu__link" tabindex="0" href="/configuration-cli">Langflow CLI</a></li><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-2 menu__list-item"><a class="menu__link" tabindex="0" href="/configuration-custom-database">Configure an external PostgreSQL database</a></li><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-2 menu__list-item"><a class="menu__link" tabindex="0" href="/configuration-global-variables">Global variables</a></li><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-2 menu__list-item"><a class="menu__link menu__link--active" aria-current="page" tabindex="0" href="/environment-variables">Environment variables</a></li><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-2 menu__list-item"><a class="menu__link" tabindex="0" href="/configuration-security-best-practices">Security best practices</a></li></ul></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist menu__link--sublist-caret" role="button" aria-expanded="false" href="/develop-overview">Develop</a></div></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist menu__link--sublist-caret" role="button" aria-expanded="false" href="/deployment-overview">Deployment</a></div></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist menu__link--sublist-caret" role="button" aria-expanded="false" href="/api">API reference</a></div></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist menu__link--sublist-caret" role="button" aria-expanded="false" href="/integrations-apify">Integrations</a></div></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist menu__link--sublist-caret" role="button" aria-expanded="false" href="/contributing-community">Contributing</a></div></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a href="https://github.com/langflow-ai/langflow/releases/latest" target="_blank" rel="noopener noreferrer" class="menu__link menu__link--sublist menu__link--sublist-caret" role="button" aria-expanded="false">Changelog</a></div></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist menu__link--sublist-caret" role="button" aria-expanded="false" href="/luna-for-langflow">Support</a></div></li><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-1 sidebar-ad">
<a href="https://astra.datastax.com/signup?type=langflow" target="_blank" class="menu__link">
<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-cloud"><path d="M17.5 19H9a7 7 0 1 1 6.71-9h1.79a4.5 4.5 0 1 1 0 9Z"/></svg>
<div class="sidebar-ad-text-container">
<span class="sidebar-ad-text">Use Langflow in the cloud</span>
<span class="sidebar-ad-text sidebar-ad-text-gradient">Sign up for DataStax Langflow</span>
</div>
</a>
</li></ul></nav></div></div></aside><main class="docMainContainer_TBSr"><div class="container padding-top--md padding-bottom--lg"><div class="row"><div class="col docItemCol_VOVn"><div class="docItemContainer_Djhp"><article><nav class="theme-doc-breadcrumbs breadcrumbsContainer_Z_bl" aria-label="Breadcrumbs"><ul class="breadcrumbs" itemscope="" itemtype="https://schema.org/BreadcrumbList"><li class="breadcrumbs__item"><a aria-label="Home page" class="breadcrumbs__link" href="/"><svg viewBox="0 0 24 24" class="breadcrumbHomeIcon_YNFT"><path d="M10 19v-5h4v5c0 .55.45 1 1 1h3c.55 0 1-.45 1-1v-7h1.7c.46 0 .68-.57.33-.87L12.67 3.6c-.38-.34-.96-.34-1.34 0l-8.36 7.53c-.34.3-.13.87.33.87H5v7c0 .55.45 1 1 1h3c.55 0 1-.45 1-1z" fill="currentColor"></path></svg></a></li><li class="breadcrumbs__item"><span class="breadcrumbs__link">Configuration</span><meta itemprop="position" content="1"></li><li itemscope="" itemprop="itemListElement" itemtype="https://schema.org/ListItem" class="breadcrumbs__item breadcrumbs__item--active"><span class="breadcrumbs__link" itemprop="name">Environment variables</span><meta itemprop="position" content="2"></li></ul></nav><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>Environment variables</h1></header><style>[data-ch-theme="github-dark"] { --ch-t-colorScheme: dark;--ch-t-foreground: #c9d1d9;--ch-t-background: #0d1117;--ch-t-lighter-inlineBackground: #0d1117e6;--ch-t-editor-background: #0d1117;--ch-t-editor-foreground: #c9d1d9;--ch-t-editor-lineHighlightBackground: #6e76811a;--ch-t-editor-rangeHighlightBackground: #ffffff0b;--ch-t-editor-infoForeground: #3794FF;--ch-t-editor-selectionBackground: #264F78;--ch-t-focusBorder: #1f6feb;--ch-t-tab-activeBackground: #0d1117;--ch-t-tab-activeForeground: #c9d1d9;--ch-t-tab-inactiveBackground: #010409;--ch-t-tab-inactiveForeground: #8b949e;--ch-t-tab-border: #30363d;--ch-t-tab-activeBorder: #0d1117;--ch-t-editorGroup-border: #30363d;--ch-t-editorGroupHeader-tabsBackground: #010409;--ch-t-editorLineNumber-foreground: #6e7681;--ch-t-input-background: #0d1117;--ch-t-input-foreground: #c9d1d9;--ch-t-input-border: #30363d;--ch-t-icon-foreground: #8b949e;--ch-t-sideBar-background: #010409;--ch-t-sideBar-foreground: #c9d1d9;--ch-t-sideBar-border: #30363d;--ch-t-list-activeSelectionBackground: #6e768166;--ch-t-list-activeSelectionForeground: #c9d1d9;--ch-t-list-hoverBackground: #6e76811a;--ch-t-list-hoverForeground: #c9d1d9; }</style>
<!-- -->
<p>Langflow lets you configure a number of settings using environment variables.</p>
<h2 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="configure-environment-variables">Configure environment variables<a href="#configure-environment-variables" class="hash-link" aria-label="Direct link to Configure environment variables" title="Direct link to Configure environment variables">​</a></h2>
<p>Langflow recognizes <a href="#supported-variables">supported environment variables</a> from the following sources:</p>
<ul>
<li>Environment variables that you&#x27;ve set in your terminal.</li>
<li>Environment variables that you&#x27;ve imported from a <code>.env</code> file using the <code>--env-file</code> option in the Langflow CLI.</li>
</ul>
<p>You can choose to use one source exclusively, or use both sources together.
If you choose to use both sources together, be aware that environment variables imported from a <code>.env</code> file take <a href="#precedence">precedence</a> over those set in your terminal.</p>
<h3 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="configure-variables-terminal">Set environment variables in your terminal<a href="#configure-variables-terminal" class="hash-link" aria-label="Direct link to Set environment variables in your terminal" title="Direct link to Set environment variables in your terminal">​</a></h3>
<p>Run the following commands to set environment variables for your current terminal session:</p>
<div class="tabs-container tabList__CuJ"><ul role="tablist" aria-orientation="horizontal" class="tabs"><li role="tab" tabindex="0" aria-selected="true" class="tabs__item tabItem_LNqP tabs__item--active">Linux or macOS</li><li role="tab" tabindex="-1" aria-selected="false" class="tabs__item tabItem_LNqP">Windows</li><li role="tab" tabindex="-1" aria-selected="false" class="tabs__item tabItem_LNqP">Docker</li></ul><div class="margin-top--md"><div role="tabpanel" class="tabItem_Ymn6"><div class="ch-codeblock not-prose" data-ch-theme="github-dark"><div class="ch-code-wrapper ch-code" data-ch-measured="false"><code class="ch-code-scroll-parent"><br><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>export VARIABLE_NAME=&#x27;VALUE&#x27;</span></div></div><br></code></div></div></div><div role="tabpanel" class="tabItem_Ymn6" hidden=""><div class="ch-codeblock not-prose" data-ch-theme="github-dark"><div class="ch-code-wrapper ch-code" data-ch-measured="false"><code class="ch-code-scroll-parent"><br><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>set VARIABLE_NAME=&#x27;VALUE&#x27;</span></div></div><br></code></div></div></div><div role="tabpanel" class="tabItem_Ymn6" hidden=""><div class="ch-codeblock not-prose" data-ch-theme="github-dark"><div class="ch-code-wrapper ch-code" data-ch-measured="false"><code class="ch-code-scroll-parent"><br><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>docker run -it --rm \</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span> -p 7860:7860 \</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span> -e VARIABLE_NAME=&#x27;VALUE&#x27; \</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span> langflowai/langflow:latest</span></div></div><br></code></div></div></div></div></div>
<p>When you start Langflow, it looks for environment variables that you&#x27;ve set in your terminal.
If it detects a supported environment variable, then it automatically adopts the specified value, subject to <a href="#precedence">precedence rules</a>.</p>
<h3 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="configure-variables-env-file">Import environment variables from a .env file<a href="#configure-variables-env-file" class="hash-link" aria-label="Direct link to Import environment variables from a .env file" title="Direct link to Import environment variables from a .env file">​</a></h3>
<ol>
<li>
<p>Create a <code>.env</code> file and open it in your preferred editor.</p>
</li>
<li>
<p>Add your environment variables to the file:</p>
<div class="ch-codeblock not-prose" data-ch-theme="github-dark"><div class="ch-code-wrapper ch-code" data-ch-measured="false"><code class="ch-code-scroll-parent"><br><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>DO_NOT_TRACK=true</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_AUTO_LOGIN=false</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_AUTO_SAVING=true</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_AUTO_SAVING_INTERVAL=1000</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_BACKEND_ONLY=false</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_BUNDLE_URLS=[&quot;https://github.com/user/repo/commit/hash&quot;]</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_CACHE_TYPE=async</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_COMPONENTS_PATH=/path/to/components/</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_CONFIG_DIR=/path/to/config/</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_DATABASE_URL=postgresql://user:password@localhost:5432/langflow</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_DEV=false</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_FALLBACK_TO_ENV_VAR=false</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_HEALTH_CHECK_MAX_RETRIES=5</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_HOST=127.0.0.1</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_LANGCHAIN_CACHE=InMemoryCache</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_MAX_FILE_SIZE_UPLOAD=10000</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_LOG_LEVEL=error</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_OPEN_BROWSER=false</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_PORT=7860</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_REMOVE_API_KEYS=false</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_SAVE_DB_IN_CONFIG_DIR=true</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_SECRET_KEY=somesecretkey</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_STORE=true</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_STORE_ENVIRONMENT_VARIABLES=true</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_SUPERUSER=adminuser</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_SUPERUSER_PASSWORD=adminpass</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_WORKER_TIMEOUT=60000</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_WORKERS=3</span></div></div><br></code></div></div>
<div class="theme-admonition theme-admonition-tip admonition_xJq3 alert alert--success"><div class="admonitionHeading_Gvgb"><span class="admonitionIcon_Rf37"><svg viewBox="0 0 12 16"><path fill-rule="evenodd" d="M6.5 0C3.48 0 1 2.19 1 5c0 .92.55 2.25 1 3 1.34 2.25 1.78 2.78 2 4v1h5v-1c.22-1.22.66-1.75 2-4 .45-.75 1-2.08 1-3 0-2.81-2.48-5-5.5-5zm3.64 7.48c-.25.44-.47.8-.67 1.11-.86 1.41-1.25 2.06-1.45 3.23-.02.05-.02.11-.02.17H5c0-.06 0-.13-.02-.17-.2-1.17-.59-1.83-1.45-3.23-.2-.31-.42-.67-.67-1.11C2.44 6.78 2 5.65 2 5c0-2.2 2.02-4 4.5-4 1.22 0 2.36.42 3.22 1.19C10.55 2.94 11 3.94 11 5c0 .66-.44 1.78-.86 2.48zM4 14h5c-.23 1.14-1.3 2-2.5 2s-2.27-.86-2.5-2z"></path></svg></span>tip</div><div class="admonitionContent_BuS1"><p>The Langflow project includes a <a href="https://github.com/langflow-ai/langflow/blob/main/.env.example" target="_blank" rel="noopener noreferrer"><code>.env.example</code></a> file to help you get started.
You can copy the contents of this file into your own <code>.env</code> file and replace the example values with your own preferred settings.</p></div></div>
</li>
<li>
<p>Save and close the file.</p>
</li>
<li>
<p>Start Langflow using the <code>--env-file</code> option to define the path to your <code>.env</code> file:</p>
<div class="tabs-container tabList__CuJ"><ul role="tablist" aria-orientation="horizontal" class="tabs"><li role="tab" tabindex="0" aria-selected="true" class="tabs__item tabItem_LNqP tabs__item--active">Local</li><li role="tab" tabindex="-1" aria-selected="false" class="tabs__item tabItem_LNqP">Docker</li></ul><div class="margin-top--md"><div role="tabpanel" class="tabItem_Ymn6"><div class="ch-codeblock not-prose" data-ch-theme="github-dark"><div class="ch-code-wrapper ch-code" data-ch-measured="false"><code class="ch-code-scroll-parent"><br><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>python -m langflow run --env-file .env</span></div></div><br></code></div></div></div><div role="tabpanel" class="tabItem_Ymn6" hidden=""><div class="ch-codeblock not-prose" data-ch-theme="github-dark"><div class="ch-code-wrapper ch-code" data-ch-measured="false"><code class="ch-code-scroll-parent"><br><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>docker run -it --rm \</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span> -p 7860:7860 \</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span> --env-file .env \</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span> langflowai/langflow:latest</span></div></div><br></code></div></div></div></div></div>
</li>
</ol>
<p>On startup, Langflow imports the environment variables from your <code>.env</code> file, as well as any that you <a href="#configure-variables-terminal">set in your terminal</a>, and adopts their specified values.</p>
<h2 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="precedence">Precedence<a href="#precedence" class="hash-link" aria-label="Direct link to Precedence" title="Direct link to Precedence">​</a></h2>
<p>Environment variables <a href="#configure-variables-env-file">defined in the .env file</a> take precedence over those <a href="#configure-variables-terminal">set in your terminal</a>.
That means, if you happen to set the same environment variable in both your terminal and your <code>.env</code> file, Langflow adopts the value from the the <code>.env</code> file.</p>
<div class="theme-admonition theme-admonition-info admonition_xJq3 alert alert--info"><div class="admonitionHeading_Gvgb"><span class="admonitionIcon_Rf37"><svg viewBox="0 0 14 16"><path fill-rule="evenodd" d="M7 2.3c3.14 0 5.7 2.56 5.7 5.7s-2.56 5.7-5.7 5.7A5.71 5.71 0 0 1 1.3 8c0-3.14 2.56-5.7 5.7-5.7zM7 1C3.14 1 0 4.14 0 8s3.14 7 7 7 7-3.14 7-7-3.14-7-7-7zm1 3H6v5h2V4zm0 6H6v2h2v-2z"></path></svg></span>CLI precedence</div><div class="admonitionContent_BuS1"><p><a href="/configuration-cli">Langflow CLI options</a> override the value of corresponding environment variables defined in the <code>.env</code> file as well as any environment variables set in your terminal.</p></div></div>
<h2 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="supported-variables">Supported environment variables<a href="#supported-variables" class="hash-link" aria-label="Direct link to Supported environment variables" title="Direct link to Supported environment variables">​</a></h2>
<p>The following table lists the environment variables supported by Langflow.</p>
<style>
.env-table {
width: 100%;
max-width: 100%;
table-layout: fixed;
}
.env-table td:first-child {
width: 30%;
font-family: var(--ifm-font-family-monospace);
background: var(--prism-background);
border-radius: 6px;
padding: 8px;
word-break: break-word;
}
.env-table td:nth-child(2) {
width: 15%;
}
.env-table td:nth-child(3) {
width: 15%;
}
.env-table td:nth-child(4) {
width: 40%;
}
.env-table td {
padding: 8px;
vertical-align: top;
}
.env-prefix {
opacity: 0.7;
}
.env-table tr {
border-top: 1px solid var(--ifm-table-border-color);
}
.env-table code {
white-space: nowrap;
}
</style>
<div class="env-table"><table><thead><tr><th>Variable</th><th>Format</th><th>Default</th><th>Description</th></tr></thead><tbody><tr><td><a id="DO_NOT_TRACK"></a>DO_NOT_TRACK</td><td>Boolean</td><td><code>false</code></td><td>If this option is enabled, Langflow does not track telemetry.</td></tr><tr><td><a id="LANGFLOW_AUTO_LOGIN"></a><span class="env-prefix">LANGFLOW_</span>AUTO_LOGIN</td><td>Boolean</td><td><code>true</code></td><td>Enable automatic login for Langflow. Set to <code>false</code> to disable automatic login and require the login form to log into the Langflow UI. Setting to <code>false</code> requires <a href="#LANGFLOW_SUPERUSER"><code>LANGFLOW_SUPERUSER</code></a> and <a href="/environment-variables#LANGFLOW_SUPERUSER_PASSWORD"><code>LANGFLOW_SUPERUSER_PASSWORD</code></a> to be set.</td></tr><tr><td><a id="LANGFLOW_AUTO_SAVING"></a><span class="env-prefix">LANGFLOW_</span>AUTO_SAVING</td><td>Boolean</td><td><code>true</code></td><td>Enable flow auto-saving.<br>See <a href="/configuration-cli#run-auto-saving"><code>--auto-saving</code> option</a>.</td></tr><tr><td><a id="LANGFLOW_AUTO_SAVING_INTERVAL"></a><span class="env-prefix">LANGFLOW_</span>AUTO_SAVING_INTERVAL</td><td>Integer</td><td><code>1000</code></td><td>Set the interval for flow auto-saving in milliseconds.<br>See <a href="/configuration-cli#run-auto-saving-interval"><code>--auto-saving-interval</code> option</a>.</td></tr><tr><td><a id="LANGFLOW_BACKEND_ONLY"></a><span class="env-prefix">LANGFLOW_</span>BACKEND_ONLY</td><td>Boolean</td><td><code>false</code></td><td>Only run Langflow&#x27;s backend server (no frontend).<br>See <a href="/configuration-cli#run-backend-only"><code>--backend-only</code> option</a>.</td></tr><tr><td><a id="LANGFLOW_BUNDLE_URLS"></a><span class="env-prefix">LANGFLOW_</span>BUNDLE_URLS</td><td>List[String]</td><td><code>[]</code></td><td>A list of URLs from which to load component bundles and flows. Supports GitHub URLs. If <span class="env-prefix">LANGFLOW_</span>AUTO_LOGIN is enabled, flows from these bundles are loaded into the database.</td></tr><tr><td><a id="LANGFLOW_CACHE_TYPE"></a><span class="env-prefix">LANGFLOW_</span>CACHE_TYPE</td><td><code>async</code><br><code>redis</code><br><code>memory</code><br><code>disk</code><br><code>critical</code></td><td><code>async</code></td><td>Set the cache type for Langflow.<br>If you set the type to <code>redis</code>, then you must also set the following environment variables: <span class="env-prefix">LANGFLOW_REDIS_HOST</span>, <span class="env-prefix">LANGFLOW_REDIS_PORT</span>, <span class="env-prefix">LANGFLOW_REDIS_DB</span>, and <span class="env-prefix">LANGFLOW_REDIS_CACHE_EXPIRE</span>.</td></tr><tr><td><a id="LANGFLOW_COMPONENTS_PATH"></a><span class="env-prefix">LANGFLOW_</span>COMPONENTS_PATH</td><td>String</td><td><code>langflow/components</code></td><td>Path to the directory containing custom components.<br>See <a href="/configuration-cli#run-components-path"><code>--components-path</code> option</a>.</td></tr><tr><td><a id="LANGFLOW_CONFIG_DIR"></a><span class="env-prefix">LANGFLOW_</span>CONFIG_DIR</td><td>String</td><td>See description</td><td>Set the Langflow configuration directory where files, logs, and the Langflow database are stored. Defaults: <strong>Linux/WSL</strong>: <code>~/.cache/langflow/</code><br><strong>macOS</strong>: <code>/Users/&lt;username&gt;/Library/Caches/langflow/</code><br><strong>Windows</strong>: <code>%LOCALAPPDATA%\langflow\langflow\Cache</code></td></tr><tr><td><a id="LANGFLOW_DATABASE_URL"></a><span class="env-prefix">LANGFLOW_</span>DATABASE_URL</td><td>String</td><td>Not set</td><td>Set the database URL for Langflow. If not provided, Langflow uses a SQLite database.</td></tr><tr><td><a id="LANGFLOW_DATABASE_CONNECTION_RETRY"></a><span class="env-prefix">LANGFLOW_</span>DATABASE_CONNECTION_RETRY</td><td>Boolean</td><td><code>false</code></td><td>If True, Langflow tries to connect to the database again if it fails.</td></tr><tr><td><a id="LANGFLOW_DB_POOL_SIZE"></a><span class="env-prefix">LANGFLOW_</span>DB_POOL_SIZE</td><td>Integer</td><td><code>10</code></td><td><strong>DEPRECATED:</strong> Use <span class="env-prefix">LANGFLOW_</span>DB_CONNECTION_SETTINGS instead. The number of connections to keep open in the connection pool.</td></tr><tr><td><a id="LANGFLOW_DB_MAX_OVERFLOW"></a><span class="env-prefix">LANGFLOW_</span>DB_MAX_OVERFLOW</td><td>Integer</td><td><code>20</code></td><td><strong>DEPRECATED:</strong> Use <span class="env-prefix">LANGFLOW_</span>DB_CONNECTION_SETTINGS instead. The number of connections to allow that can be opened beyond the pool size.</td></tr><tr><td><a id="LANGFLOW_DB_CONNECT_TIMEOUT"></a><span class="env-prefix">LANGFLOW_</span>DB_CONNECT_TIMEOUT</td><td>Integer</td><td><code>20</code></td><td>The number of seconds to wait before giving up on a lock to be released or establishing a connection to the database.</td></tr><tr><td><a id="LANGFLOW_DB_CONNECTION_SETTINGS"></a><span class="env-prefix">LANGFLOW_</span>DB_CONNECTION_SETTINGS</td><td>JSON</td><td>Not set</td><td>A JSON dictionary to centralize database connection parameters. Example: <code>{&quot;pool_size&quot;: 10, &quot;max_overflow&quot;: 20}</code></td></tr><tr><td><a id="LANGFLOW_DEV"></a><span class="env-prefix">LANGFLOW_</span>DEV</td><td>Boolean</td><td><code>false</code></td><td>Run Langflow in development mode (may contain bugs).<br>See <a href="/configuration-cli#run-dev"><code>--dev</code> option</a>.</td></tr><tr><td><a id="LANGFLOW_ENABLE_LOG_RETRIEVAL"></a><span class="env-prefix">LANGFLOW_</span>ENABLE_LOG_RETRIEVAL</td><td>Boolean</td><td><code>false</code></td><td>Enable log retrieval functionality.</td></tr><tr><td><a id="LANGFLOW_FALLBACK_TO_ENV_VAR"></a><span class="env-prefix">LANGFLOW_</span>FALLBACK_TO_ENV_VAR</td><td>Boolean</td><td><code>true</code></td><td>If enabled, <a href="/configuration-global-variables">global variables</a> set in the Langflow UI fall back to an environment variable with the same name when Langflow fails to retrieve the variable value.</td></tr><tr><td><a id="LANGFLOW_FRONTEND_PATH"></a><span class="env-prefix">LANGFLOW_</span>FRONTEND_PATH</td><td>String</td><td><code>./frontend</code></td><td>Path to the frontend directory containing build files. This is for development purposes only.<br>See <a href="/configuration-cli#run-frontend-path"><code>--frontend-path</code> option</a>.</td></tr><tr><td><a id="LANGFLOW_HEALTH_CHECK_MAX_RETRIES"></a><span class="env-prefix">LANGFLOW_</span>HEALTH_CHECK_MAX_RETRIES</td><td>Integer</td><td><code>5</code></td><td>Set the maximum number of retries for the health check.<br>See <a href="/configuration-cli#run-health-check-max-retries"><code>--health-check-max-retries</code> option</a>.</td></tr><tr><td><a id="LANGFLOW_HOST"></a><span class="env-prefix">LANGFLOW_</span>HOST</td><td>String</td><td><code>127.0.0.1</code></td><td>The host on which the Langflow server will run.<br>See <a href="/configuration-cli#run-host"><code>--host</code> option</a>.</td></tr><tr><td><a id="LANGFLOW_LANGCHAIN_CACHE"></a><span class="env-prefix">LANGFLOW_</span>LANGCHAIN_CACHE</td><td><code>InMemoryCache</code><br><code>SQLiteCache</code></td><td><code>InMemoryCache</code></td><td>Type of cache to use.<br>See <a href="/configuration-cli#run-cache"><code>--cache</code> option</a>.</td></tr><tr><td><a id="LANGFLOW_LOG_LEVEL"></a><span class="env-prefix">LANGFLOW_</span>LOG_LEVEL</td><td><code>DEBUG</code><br><code>INFO</code><br><code>WARNING</code><br><code>ERROR</code><br><code>CRITICAL</code></td><td><code>INFO</code></td><td>Set the logging level for Langflow.</td></tr><tr><td><a id="LANGFLOW_LOG_FILE"></a><span class="env-prefix">LANGFLOW_</span>LOG_FILE</td><td>String</td><td>Not set</td><td>Path to the log file. If this option is not set, logs are written to stdout.</td></tr><tr><td><a id="LANGFLOW_LOG_RETRIEVER_BUFFER_SIZE"></a><span class="env-prefix">LANGFLOW_</span>LOG_RETRIEVER_BUFFER_SIZE</td><td>Integer</td><td><code>10000</code></td><td>Set the buffer size for log retrieval. Only used if <code>LANGFLOW_ENABLE_LOG_RETRIEVAL</code> is enabled.</td></tr><tr><td><a id="LANGFLOW_MAX_FILE_SIZE_UPLOAD"></a><span class="env-prefix">LANGFLOW_</span>MAX_FILE_SIZE_UPLOAD</td><td>Integer</td><td><code>100</code></td><td>Set the maximum file size for the upload in megabytes.<br>See <a href="/configuration-cli#run-max-file-size-upload"><code>--max-file-size-upload</code> option</a>.</td></tr><tr><td><a id="LANGFLOW_MCP_SERVER_ENABLED"></a><span class="env-prefix">LANGFLOW_</span>MCP_SERVER_ENABLED</td><td>Boolean</td><td><code>true</code></td><td>If this option is set to False, Langflow does not enable the MCP server.</td></tr><tr><td><a id="LANGFLOW_MCP_SERVER_ENABLE_PROGRESS_NOTIFICATIONS"></a><span class="env-prefix">LANGFLOW_</span>MCP_SERVER_ENABLE_PROGRESS_NOTIFICATIONS</td><td>Boolean</td><td><code>false</code></td><td>If this option is set to True, Langflow sends progress notifications in the MCP server.</td></tr><tr><td><a id="LANGFLOW_NEW_USER_IS_ACTIVE"></a><span class="env-prefix">LANGFLOW_</span>NEW_USER_IS_ACTIVE</td><td>Boolean</td><td><code>false</code></td><td>When enabled, new users are automatically activated and can log in without requiring explicit activation by the superuser.</td></tr><tr><td><a id="LANGFLOW_OPEN_BROWSER"></a><span class="env-prefix">LANGFLOW_</span>OPEN_BROWSER</td><td>Boolean</td><td><code>false</code></td><td>Open the system web browser on startup.<br>See <a href="/configuration-cli#run-open-browser"><code>--open-browser</code> option</a>.</td></tr><tr><td><a id="LANGFLOW_PORT"></a><span class="env-prefix">LANGFLOW_</span>PORT</td><td>Integer</td><td><code>7860</code></td><td>The port on which the Langflow server runs. The server automatically selects a free port if the specified port is in use.<br>See <a href="/configuration-cli#run-port"><code>--port</code> option</a>.</td></tr><tr><td><a id="LANGFLOW_PROMETHEUS_ENABLED"></a><span class="env-prefix">LANGFLOW_</span>PROMETHEUS_ENABLED</td><td>Boolean</td><td><code>false</code></td><td>Expose Prometheus metrics.</td></tr><tr><td><a id="LANGFLOW_PROMETHEUS_PORT"></a><span class="env-prefix">LANGFLOW_</span>PROMETHEUS_PORT</td><td>Integer</td><td><code>9090</code></td><td>Set the port on which Langflow exposes Prometheus metrics.</td></tr><tr><td><a id="LANGFLOW_REDIS_CACHE_EXPIRE"></a><span class="env-prefix">LANGFLOW_</span>REDIS_CACHE_EXPIRE</td><td>Integer</td><td><code>3600</code></td><td>See <span class="env-prefix">LANGFLOW_</span>CACHE_TYPE.</td></tr><tr><td><a id="LANGFLOW_REDIS_DB"></a><span class="env-prefix">LANGFLOW_</span>REDIS_DB</td><td>Integer</td><td><code>0</code></td><td>See <span class="env-prefix">LANGFLOW_</span>CACHE_TYPE.</td></tr><tr><td><a id="LANGFLOW_REDIS_HOST"></a><span class="env-prefix">LANGFLOW_</span>REDIS_HOST</td><td>String</td><td><code>localhost</code></td><td>See <span class="env-prefix">LANGFLOW_</span>CACHE_TYPE.</td></tr><tr><td><a id="LANGFLOW_REDIS_PORT"></a><span class="env-prefix">LANGFLOW_</span>REDIS_PORT</td><td>String</td><td><code>6379</code></td><td>See <span class="env-prefix">LANGFLOW_</span>CACHE_TYPE.</td></tr><tr><td><a id="LANGFLOW_REDIS_PASSWORD"></a><span class="env-prefix">LANGFLOW_</span>REDIS_PASSWORD</td><td>String</td><td>Not set</td><td>Password for Redis authentication when using Redis cache type.</td></tr><tr><td><a id="LANGFLOW_REMOVE_API_KEYS"></a><span class="env-prefix">LANGFLOW_</span>REMOVE_API_KEYS</td><td>Boolean</td><td><code>false</code></td><td>Remove API keys from the projects saved in the database.<br>See <a href="/configuration-cli#run-remove-api-keys"><code>--remove-api-keys</code> option</a>.</td></tr><tr><td><a id="LANGFLOW_SAVE_DB_IN_CONFIG_DIR"></a><span class="env-prefix">LANGFLOW_</span>SAVE_DB_IN_CONFIG_DIR</td><td>Boolean</td><td><code>false</code></td><td>Save the Langflow database in <span class="env-prefix">LANGFLOW_</span>CONFIG_DIR instead of in the Langflow package directory. Note, when this variable is set to default (<code>false</code>), the database isn&#x27;t shared between different virtual environments and the database is deleted when you uninstall Langflow.</td></tr><tr><td><a id="LANGFLOW_SECRET_KEY"></a><span class="env-prefix">LANGFLOW_</span>SECRET_KEY</td><td>String</td><td>Auto-generated</td><td>Key used for encrypting sensitive data like API keys. If a key is not provided, a secure key is auto-generated. For production environments with multiple instances, you should explicitly set this to ensure consistent encryption across instances.</td></tr><tr><td><a id="LANGFLOW_STORE"></a><span class="env-prefix">LANGFLOW_</span>STORE</td><td>Boolean</td><td><code>true</code></td><td>Enable the Langflow Store.<br>See <a href="/configuration-cli#run-store"><code>--store</code> option</a>.</td></tr><tr><td><a id="LANGFLOW_STORE_ENVIRONMENT_VARIABLES"></a><span class="env-prefix">LANGFLOW_</span>STORE_ENVIRONMENT_VARIABLES</td><td>Boolean</td><td><code>true</code></td><td>Store environment variables as <a href="/configuration-global-variables">global variables</a> in the database.</td></tr><tr><td><a id="LANGFLOW_UPDATE_STARTER_PROJECTS"></a><span class="env-prefix">LANGFLOW_</span>UPDATE_STARTER_PROJECTS</td><td>Boolean</td><td><code>true</code></td><td>If this option is enabled, Langflow updates starter projects with the latest component versions when initializing.</td></tr><tr><td><a id="LANGFLOW_SUPERUSER"></a><span class="env-prefix">LANGFLOW_</span>SUPERUSER</td><td>String</td><td><code>langflow</code></td><td>Set the name for the superuser. Required if <span class="env-prefix">LANGFLOW_</span>AUTO_LOGIN is set to <code>false</code>.<br>See <a href="/configuration-cli#superuser-username"><code>superuser --username</code> option</a>.</td></tr><tr><td><a id="LANGFLOW_SUPERUSER_PASSWORD"></a><span class="env-prefix">LANGFLOW_</span>SUPERUSER_PASSWORD</td><td>String</td><td><code>langflow</code></td><td>Set the password for the superuser. Required if <span class="env-prefix">LANGFLOW_</span>AUTO_LOGIN is set to <code>false</code>.<br>See <a href="/configuration-cli#superuser-password"><code>superuser --password</code> option</a>.</td></tr><tr><td><a id="LANGFLOW_VARIABLES_TO_GET_FROM_ENVIRONMENT"></a><span class="env-prefix">LANGFLOW_</span>VARIABLES_TO_GET_FROM_ENVIRONMENT</td><td>String</td><td>Not set</td><td>Comma-separated list of environment variables to get from the environment and store as <a href="/configuration-global-variables">global variables</a>.</td></tr><tr><td><a id="LANGFLOW_LOAD_FLOWS_PATH"></a><span class="env-prefix">LANGFLOW_</span>LOAD_FLOWS_PATH</td><td>String</td><td>Not set</td><td>Path to a directory containing flow JSON files to be loaded on startup. Note that this feature only works if <span class="env-prefix">LANGFLOW_</span>AUTO_LOGIN is enabled.</td></tr><tr><td><a id="LANGFLOW_WORKER_TIMEOUT"></a><span class="env-prefix">LANGFLOW_</span>WORKER_TIMEOUT</td><td>Integer</td><td><code>300</code></td><td>Worker timeout in seconds.<br>See <a href="/configuration-cli#run-worker-timeout"><code>--worker-timeout</code> option</a>.</td></tr><tr><td><a id="LANGFLOW_WORKERS"></a><span class="env-prefix">LANGFLOW_</span>WORKERS</td><td>Integer</td><td><code>1</code></td><td>Number of worker processes.<br>See <a href="/configuration-cli#run-workers"><code>--workers</code> option</a>.</td></tr></tbody></table></div>
<h2 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="configure-env-overrideconf-and-tasksjson-files">Configure .env, override.conf, and tasks.json files<a href="#configure-env-overrideconf-and-tasksjson-files" class="hash-link" aria-label="Direct link to Configure .env, override.conf, and tasks.json files" title="Direct link to Configure .env, override.conf, and tasks.json files">​</a></h2>
<p>The following examples show how to configure Langflow using environment variables in different scenarios.</p>
<div class="tabs-container tabList__CuJ"><ul role="tablist" aria-orientation="horizontal" class="tabs"><li role="tab" tabindex="0" aria-selected="true" class="tabs__item tabItem_LNqP tabs__item--active">.env File</li><li role="tab" tabindex="-1" aria-selected="false" class="tabs__item tabItem_LNqP">Systemd service</li><li role="tab" tabindex="-1" aria-selected="false" class="tabs__item tabItem_LNqP">VSCode tasks.json</li></ul><div class="margin-top--md"><div role="tabpanel" class="tabItem_Ymn6"><p>The <code>.env</code> file is a text file that contains key-value pairs of environment variables.</p><p>Create or edit a file named <code>.env</code> in your project root directory and add your configuration:</p><div class="ch-codeblock not-prose" data-ch-theme="github-dark"><div class="ch-code-wrapper ch-code" data-ch-measured="false"><code class="ch-code-scroll-parent"><br><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>DO_NOT_TRACK=true</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_AUTO_LOGIN=false</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_AUTO_SAVING=true</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_AUTO_SAVING_INTERVAL=1000</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_BACKEND_ONLY=false</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_BUNDLE_URLS=[&quot;https://github.com/user/repo/commit/hash&quot;]</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_CACHE_TYPE=async</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_COMPONENTS_PATH=/path/to/components/</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_CONFIG_DIR=/path/to/config/</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_DATABASE_URL=postgresql://user:password@localhost:5432/langflow</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_DEV=false</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_FALLBACK_TO_ENV_VAR=false</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_HEALTH_CHECK_MAX_RETRIES=5</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_HOST=127.0.0.1</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_LANGCHAIN_CACHE=InMemoryCache</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_MAX_FILE_SIZE_UPLOAD=10000</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_LOG_LEVEL=error</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_OPEN_BROWSER=false</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_PORT=7860</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_REMOVE_API_KEYS=false</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_SAVE_DB_IN_CONFIG_DIR=true</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_SECRET_KEY=somesecretkey</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_STORE=true</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_STORE_ENVIRONMENT_VARIABLES=true</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_SUPERUSER=adminuser</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_SUPERUSER_PASSWORD=adminpass</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_WORKER_TIMEOUT=60000</span></div></div><div><span class="ch-code-line-number">_<!-- -->28</span><div style="display:inline-block;margin-left:16px"><span>LANGFLOW_WORKERS=3</span></div></div><br></code></div></div></div><div role="tabpanel" class="tabItem_Ymn6" hidden=""><p>A systemd service configuration file configures Linux system services.</p><p>To add environment variables, create or edit a service configuration file and add an <code>override.conf</code> file. This file allows you to override the default environment variables for the service.</p><div class="ch-codeblock not-prose" data-ch-theme="github-dark"><div class="ch-code-wrapper ch-code" data-ch-measured="false"><code class="ch-code-scroll-parent"><br><div><span class="ch-code-line-number">_<!-- -->31</span><div style="display:inline-block;margin-left:16px"><span>[Service]</span></div></div><div><span class="ch-code-line-number">_<!-- -->31</span><div style="display:inline-block;margin-left:16px"><span>Environment=&quot;DO_NOT_TRACK=true&quot;</span></div></div><div><span class="ch-code-line-number">_<!-- -->31</span><div style="display:inline-block;margin-left:16px"><span>Environment=&quot;LANGFLOW_AUTO_LOGIN=false&quot;</span></div></div><div><span class="ch-code-line-number">_<!-- -->31</span><div style="display:inline-block;margin-left:16px"><span>Environment=&quot;LANGFLOW_AUTO_SAVING=true&quot;</span></div></div><div><span class="ch-code-line-number">_<!-- -->31</span><div style="display:inline-block;margin-left:16px"><span>Environment=&quot;LANGFLOW_AUTO_SAVING_INTERVAL=1000&quot;</span></div></div><div><span class="ch-code-line-number">_<!-- -->31</span><div style="display:inline-block;margin-left:16px"><span>Environment=&quot;LANGFLOW_BACKEND_ONLY=false&quot;</span></div></div><div><span class="ch-code-line-number">_<!-- -->31</span><div style="display:inline-block;margin-left:16px"><span>Environment=&quot;LANGFLOW_BUNDLE_URLS=[\&quot;https://github.com/user/repo/commit/hash\&quot;]&quot;</span></div></div><div><span class="ch-code-line-number">_<!-- -->31</span><div style="display:inline-block;margin-left:16px"><span>Environment=&quot;LANGFLOW_CACHE_TYPE=async&quot;</span></div></div><div><span class="ch-code-line-number">_<!-- -->31</span><div style="display:inline-block;margin-left:16px"><span>Environment=&quot;LANGFLOW_COMPONENTS_PATH=/path/to/components/&quot;</span></div></div><div><span class="ch-code-line-number">_<!-- -->31</span><div style="display:inline-block;margin-left:16px"><span>Environment=&quot;LANGFLOW_CONFIG_DIR=/path/to/config&quot;</span></div></div><div><span class="ch-code-line-number">_<!-- -->31</span><div style="display:inline-block;margin-left:16px"><span>Environment=&quot;LANGFLOW_DATABASE_URL=postgresql://user:password@localhost:5432/langflow&quot;</span></div></div><div><span class="ch-code-line-number">_<!-- -->31</span><div style="display:inline-block;margin-left:16px"><span>Environment=&quot;LANGFLOW_DEV=false&quot;</span></div></div><div><span class="ch-code-line-number">_<!-- -->31</span><div style="display:inline-block;margin-left:16px"><span>Environment=&quot;LANGFLOW_FALLBACK_TO_ENV_VAR=false&quot;</span></div></div><div><span class="ch-code-line-number">_<!-- -->31</span><div style="display:inline-block;margin-left:16px"><span>Environment=&quot;LANGFLOW_HEALTH_CHECK_MAX_RETRIES=5&quot;</span></div></div><div><span class="ch-code-line-number">_<!-- -->31</span><div style="display:inline-block;margin-left:16px"><span>Environment=&quot;LANGFLOW_HOST=127.0.0.1&quot;</span></div></div><div><span class="ch-code-line-number">_<!-- -->31</span><div style="display:inline-block;margin-left:16px"><span>Environment=&quot;LANGFLOW_LANGCHAIN_CACHE=InMemoryCache&quot;</span></div></div><div><span class="ch-code-line-number">_<!-- -->31</span><div style="display:inline-block;margin-left:16px"><span>Environment=&quot;LANGFLOW_MAX_FILE_SIZE_UPLOAD=10000&quot;</span></div></div><div><span class="ch-code-line-number">_<!-- -->31</span><div style="display:inline-block;margin-left:16px"><span>Environment=&quot;LANGFLOW_LOG_ENV=container_json&quot;</span></div></div><div><span class="ch-code-line-number">_<!-- -->31</span><div style="display:inline-block;margin-left:16px"><span>Environment=&quot;LANGFLOW_LOG_FILE=logs/langflow.log&quot;</span></div></div><div><span class="ch-code-line-number">_<!-- -->31</span><div style="display:inline-block;margin-left:16px"><span>Environment=&quot;LANGFLOW_LOG_LEVEL=error&quot;</span></div></div><div><span class="ch-code-line-number">_<!-- -->31</span><div style="display:inline-block;margin-left:16px"><span>Environment=&quot;LANGFLOW_OPEN_BROWSER=false&quot;</span></div></div><div><span class="ch-code-line-number">_<!-- -->31</span><div style="display:inline-block;margin-left:16px"><span>Environment=&quot;LANGFLOW_PORT=7860&quot;</span></div></div><div><span class="ch-code-line-number">_<!-- -->31</span><div style="display:inline-block;margin-left:16px"><span>Environment=&quot;LANGFLOW_REMOVE_API_KEYS=false&quot;</span></div></div><div><span class="ch-code-line-number">_<!-- -->31</span><div style="display:inline-block;margin-left:16px"><span>Environment=&quot;LANGFLOW_SAVE_DB_IN_CONFIG_DIR=true&quot;</span></div></div><div><span class="ch-code-line-number">_<!-- -->31</span><div style="display:inline-block;margin-left:16px"><span>Environment=&quot;LANGFLOW_SECRET_KEY=somesecretkey&quot;</span></div></div><div><span class="ch-code-line-number">_<!-- -->31</span><div style="display:inline-block;margin-left:16px"><span>Environment=&quot;LANGFLOW_STORE=true&quot;</span></div></div><div><span class="ch-code-line-number">_<!-- -->31</span><div style="display:inline-block;margin-left:16px"><span>Environment=&quot;LANGFLOW_STORE_ENVIRONMENT_VARIABLES=true&quot;</span></div></div><div><span class="ch-code-line-number">_<!-- -->31</span><div style="display:inline-block;margin-left:16px"><span>Environment=&quot;LANGFLOW_SUPERUSER=adminuser&quot;</span></div></div><div><span class="ch-code-line-number">_<!-- -->31</span><div style="display:inline-block;margin-left:16px"><span>Environment=&quot;LANGFLOW_SUPERUSER_PASSWORD=adminpass&quot;</span></div></div><div><span class="ch-code-line-number">_<!-- -->31</span><div style="display:inline-block;margin-left:16px"><span>Environment=&quot;LANGFLOW_WORKER_TIMEOUT=60000&quot;</span></div></div><div><span class="ch-code-line-number">_<!-- -->31</span><div style="display:inline-block;margin-left:16px"><span>Environment=&quot;LANGFLOW_WORKERS=3&quot;</span></div></div><br></code></div></div><p>For more information on systemd, see the <a href="https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/9/html/using_systemd_unit_files_to_customize_and_optimize_your_system/assembly_working-with-systemd-unit-files_working-with-systemd" target="_blank" rel="noopener noreferrer">Red Hat documentation</a>.</p></div><div role="tabpanel" class="tabItem_Ymn6" hidden=""><p>The <code>tasks.json</code> file located in <code>.vscode/tasks.json</code> is a configuration file for development environments using Visual Studio Code.</p><p>Create or edit the <code>.vscode/tasks.json</code> file in your project root:</p><div class="ch-codeblock not-prose" data-ch-theme="github-dark"><div class="ch-code-wrapper ch-code" data-ch-measured="false"><code class="ch-code-scroll-parent"><br><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span>{</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span> &quot;version&quot;: &quot;2.0.0&quot;,</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span> &quot;options&quot;: {</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span> &quot;env&quot;: {</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span> &quot;DO_NOT_TRACK&quot;: &quot;true&quot;,</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span> &quot;LANGFLOW_AUTO_LOGIN&quot;: &quot;false&quot;,</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span> &quot;LANGFLOW_AUTO_SAVING&quot;: &quot;true&quot;,</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span> &quot;LANGFLOW_AUTO_SAVING_INTERVAL&quot;: &quot;1000&quot;,</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span> &quot;LANGFLOW_BACKEND_ONLY&quot;: &quot;false&quot;,</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span> &quot;LANGFLOW_BUNDLE_URLS&quot;: &quot;[\&quot;https://github.com/user/repo/commit/hash\&quot;]&quot;,</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span> &quot;LANGFLOW_CACHE_TYPE&quot;: &quot;async&quot;,</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span> &quot;LANGFLOW_COMPONENTS_PATH&quot;: &quot;D:/path/to/components/&quot;,</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span> &quot;LANGFLOW_CONFIG_DIR&quot;: &quot;D:/path/to/config/&quot;,</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span> &quot;LANGFLOW_DATABASE_URL&quot;: &quot;postgresql://postgres:password@localhost:5432/langflow&quot;,</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span> &quot;LANGFLOW_DEV&quot;: &quot;false&quot;,</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span> &quot;LANGFLOW_FALLBACK_TO_ENV_VAR&quot;: &quot;false&quot;,</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span> &quot;LANGFLOW_HEALTH_CHECK_MAX_RETRIES&quot;: &quot;5&quot;,</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span> &quot;LANGFLOW_HOST&quot;: &quot;localhost&quot;,</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span> &quot;LANGFLOW_LANGCHAIN_CACHE&quot;: &quot;InMemoryCache&quot;,</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span> &quot;LANGFLOW_MAX_FILE_SIZE_UPLOAD&quot;: &quot;10000&quot;,</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span> &quot;LANGFLOW_LOG_ENV&quot;: &quot;container_csv&quot;,</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span> &quot;LANGFLOW_LOG_FILE&quot;: &quot;langflow.log&quot;,</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span> &quot;LANGFLOW_LOG_LEVEL&quot;: &quot;error&quot;,</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span> &quot;LANGFLOW_OPEN_BROWSER&quot;: &quot;false&quot;,</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span> &quot;LANGFLOW_PORT&quot;: &quot;7860&quot;,</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span> &quot;LANGFLOW_REMOVE_API_KEYS&quot;: &quot;true&quot;,</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span> &quot;LANGFLOW_SAVE_DB_IN_CONFIG_DIR&quot;: &quot;false&quot;,</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span> &quot;LANGFLOW_SECRET_KEY&quot;: &quot;somesecretkey&quot;,</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span> &quot;LANGFLOW_STORE&quot;: &quot;true&quot;,</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span> &quot;LANGFLOW_STORE_ENVIRONMENT_VARIABLES&quot;: &quot;true&quot;,</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span> &quot;LANGFLOW_SUPERUSER&quot;: &quot;adminuser&quot;,</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span> &quot;LANGFLOW_SUPERUSER_PASSWORD&quot;: &quot;adminpass&quot;,</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span> &quot;LANGFLOW_WORKER_TIMEOUT&quot;: &quot;60000&quot;,</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span> &quot;LANGFLOW_WORKERS&quot;: &quot;3&quot;</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span> }</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span> },</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span> &quot;tasks&quot;: [</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span> {</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span> &quot;label&quot;: &quot;langflow backend&quot;,</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span> &quot;type&quot;: &quot;shell&quot;,</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span> &quot;command&quot;: &quot;. ./langflownightly/Scripts/activate &amp;&amp; langflow run&quot;,</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span> &quot;isBackground&quot;: true,</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span> &quot;problemMatcher&quot;: []</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span> }</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span> ]</span></div></div><div><span class="ch-code-line-number">_<!-- -->46</span><div style="display:inline-block;margin-left:16px"><span>}</span></div></div><br></code></div></div><p>To run Langflow using the above VSCode <code>tasks.json</code> file, in the VSCode command palette, select <strong>Tasks: Run Task</strong> &gt; <strong>langflow backend</strong>.</p></div></div></div></div></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Docs pages"><a class="pagination-nav__link pagination-nav__link--prev" href="/configuration-global-variables"><div class="pagination-nav__sublabel">Previous</div><div class="pagination-nav__label">Global variables</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/configuration-security-best-practices"><div class="pagination-nav__sublabel">Next</div><div class="pagination-nav__label">Security best practices</div></a></nav></div></div><div class="col col--3"><div class="tableOfContents_bqdL thin-scrollbar theme-doc-toc-desktop"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#configure-environment-variables" class="table-of-contents__link toc-highlight">Configure environment variables</a><ul><li><a href="#configure-variables-terminal" class="table-of-contents__link toc-highlight">Set environment variables in your terminal</a></li><li><a href="#configure-variables-env-file" class="table-of-contents__link toc-highlight">Import environment variables from a .env file</a></li></ul></li><li><a href="#precedence" class="table-of-contents__link toc-highlight">Precedence</a></li><li><a href="#supported-variables" class="table-of-contents__link toc-highlight">Supported environment variables</a></li><li><a href="#configure-env-overrideconf-and-tasksjson-files" class="table-of-contents__link toc-highlight">Configure .env, override.conf, and tasks.json files</a></li></ul></div></div></div></div></main></div></div></div><div style="position:fixed;right:20px;bottom:20px;z-index:100;display:flex;align-items:center;gap:10px;cursor:pointer"><div style="background-color:#f6f6f6;border-radius:50%;width:48px;height:48px;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 4px rgba(0,0,0,0.1)"><img src="/img/langflow-icon-black-transparent.svg" style="width:40px" alt="Search"></div></div></div>
</body>
</html>
Reference in New Issue View Git Blame Copy Permalink