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447 lines
14 KiB
HTML
447 lines
14 KiB
HTML
4 years ago
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<!doctype html>
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<html lang="en" class="no-js">
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width,initial-scale=1">
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<link rel="canonical" href="http://containrrr.github.io/watchtower/running-multiple-instances/">
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<link rel="shortcut icon" href="../assets/images/favicon.png">
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<meta name="generator" content="mkdocs-1.1.2, mkdocs-material-6.0.1">
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<title>Running multiple instances - Watchtower</title>
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<link rel="stylesheet" href="../assets/stylesheets/main.38780c08.min.css">
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<link rel="stylesheet" href="../assets/stylesheets/palette.3f72e892.min.css">
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<link href="https://fonts.gstatic.com" rel="preconnect" crossorigin>
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<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Roboto:300,400,400i,700%7CRoboto+Mono&display=fallback">
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<style>body,input{font-family:"Roboto",-apple-system,BlinkMacSystemFont,Helvetica,Arial,sans-serif}code,kbd,pre{font-family:"Roboto Mono",SFMono-Regular,Consolas,Menlo,monospace}</style>
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</head>
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<body dir="ltr" data-md-color-scheme="" data-md-color-primary="none" data-md-color-accent="none">
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<input class="md-toggle" data-md-toggle="drawer" type="checkbox" id="__drawer" autocomplete="off">
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<input class="md-toggle" data-md-toggle="search" type="checkbox" id="__search" autocomplete="off">
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<label class="md-overlay" for="__drawer"></label>
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<div data-md-component="skip">
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</div>
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<div data-md-component="announce">
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</div>
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<header class="md-header" data-md-component="header">
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<nav class="md-header-nav md-grid" aria-label="Header">
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<a href="http://containrrr.github.io/watchtower/" title="Watchtower" class="md-header-nav__button md-logo" aria-label="Watchtower">
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<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M12 8a3 3 0 003-3 3 3 0 00-3-3 3 3 0 00-3 3 3 3 0 003 3m0 3.54C9.64 9.35 6.5 8 3 8v11c3.5 0 6.64 1.35 9 3.54 2.36-2.19 5.5-3.54 9-3.54V8c-3.5 0-6.64 1.35-9 3.54z"/></svg>
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</a>
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<label class="md-header-nav__button md-icon" for="__drawer">
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<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M3 6h18v2H3V6m0 5h18v2H3v-2m0 5h18v2H3v-2z"/></svg>
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</label>
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<div class="md-header-nav__title" data-md-component="header-title">
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<div class="md-header-nav__ellipsis">
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<span class="md-header-nav__topic md-ellipsis">
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Watchtower
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</span>
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<span class="md-header-nav__topic md-ellipsis">
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Running multiple instances
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</span>
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</div>
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</div>
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<label class="md-header-nav__button md-icon" for="__search">
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<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M9.5 3A6.5 6.5 0 0116 9.5c0 1.61-.59 3.09-1.56 4.23l.27.27h.79l5 5-1.5 1.5-5-5v-.79l-.27-.27A6.516 6.516 0 019.5 16 6.5 6.5 0 013 9.5 6.5 6.5 0 019.5 3m0 2C7 5 5 7 5 9.5S7 14 9.5 14 14 12 14 9.5 12 5 9.5 5z"/></svg>
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</label>
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<div class="md-search" data-md-component="search" role="dialog">
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<label class="md-search__overlay" for="__search"></label>
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<div class="md-search__inner" role="search">
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<form class="md-search__form" name="search">
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<input type="text" class="md-search__input" name="query" aria-label="Search" placeholder="Search" autocapitalize="off" autocorrect="off" autocomplete="off" spellcheck="false" data-md-component="search-query" data-md-state="active">
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<label class="md-search__icon md-icon" for="__search">
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<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M9.5 3A6.5 6.5 0 0116 9.5c0 1.61-.59 3.09-1.56 4.23l.27.27h.79l5 5-1.5 1.5-5-5v-.79l-.27-.27A6.516 6.516 0 019.5 16 6.5 6.5 0 013 9.5 6.5 6.5 0 019.5 3m0 2C7 5 5 7 5 9.5S7 14 9.5 14 14 12 14 9.5 12 5 9.5 5z"/></svg>
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<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M20 11v2H8l5.5 5.5-1.42 1.42L4.16 12l7.92-7.92L13.5 5.5 8 11h12z"/></svg>
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</label>
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<button type="reset" class="md-search__icon md-icon" aria-label="Clear" data-md-component="search-reset" tabindex="-1">
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<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M19 6.41L17.59 5 12 10.59 6.41 5 5 6.41 10.59 12 5 17.59 6.41 19 12 13.41 17.59 19 19 17.59 13.41 12 19 6.41z"/></svg>
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</button>
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</form>
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<div class="md-search__output">
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<div class="md-search__scrollwrap" data-md-scrollfix>
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<div class="md-search-result" data-md-component="search-result">
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<div class="md-search-result__meta">
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Initializing search
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</div>
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<ol class="md-search-result__list"></ol>
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</div>
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</div>
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</div>
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</div>
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</div>
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<div class="md-header-nav__source">
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<a href="https://github.com/containrrr/watchtower/" title="Go to repository" class="md-source">
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<div class="md-source__icon md-icon">
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<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512"><path d="M439.55 236.05L244 40.45a28.87 28.87 0 00-40.81 0l-40.66 40.63 51.52 51.52c27.06-9.14 52.68 16.77 43.39 43.68l49.66 49.66c34.23-11.8 61.18 31 35.47 56.69-26.49 26.49-70.21-2.87-56-37.34L240.22 199v121.85c25.3 12.54 22.26 41.85 9.08 55a34.34 34.34 0 01-48.55 0c-17.57-17.6-11.07-46.91 11.25-56v-123c-20.8-8.51-24.6-30.74-18.64-45L142.57 101 8.45 235.14a28.86 28.86 0 000 40.81l195.61 195.6a28.86 28.86 0 0040.8 0l194.69-194.69a28.86 28.86 0 000-40.81z"/></svg>
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</div>
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<div class="md-source__repository">
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GitHub
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</div>
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</a>
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</div>
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</nav>
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</header>
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<div class="md-container" data-md-component="container">
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<main class="md-main" data-md-component="main">
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<div class="md-main__inner md-grid">
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<div class="md-sidebar md-sidebar--primary" data-md-component="navigation">
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<div class="md-sidebar__scrollwrap">
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<div class="md-sidebar__inner">
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<nav class="md-nav md-nav--primary" aria-label="Navigation" data-md-level="0">
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<label class="md-nav__title" for="__drawer">
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<a href="http://containrrr.github.io/watchtower/" title="Watchtower" class="md-nav__button md-logo" aria-label="Watchtower">
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<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M12 8a3 3 0 003-3 3 3 0 00-3-3 3 3 0 00-3 3 3 3 0 003 3m0 3.54C9.64 9.35 6.5 8 3 8v11c3.5 0 6.64 1.35 9 3.54 2.36-2.19 5.5-3.54 9-3.54V8c-3.5 0-6.64 1.35-9 3.54z"/></svg>
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</a>
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Watchtower
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</label>
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<div class="md-nav__source">
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<a href="https://github.com/containrrr/watchtower/" title="Go to repository" class="md-source">
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<div class="md-source__icon md-icon">
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<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512"><path d="M439.55 236.05L244 40.45a28.87 28.87 0 00-40.81 0l-40.66 40.63 51.52 51.52c27.06-9.14 52.68 16.77 43.39 43.68l49.66 49.66c34.23-11.8 61.18 31 35.47 56.69-26.49 26.49-70.21-2.87-56-37.34L240.22 199v121.85c25.3 12.54 22.26 41.85 9.08 55a34.34 34.34 0 01-48.55 0c-17.57-17.6-11.07-46.91 11.25-56v-123c-20.8-8.51-24.6-30.74-18.64-45L142.57 101 8.45 235.14a28.86 28.86 0 000 40.81l195.61 195.6a28.86 28.86 0 0040.8 0l194.69-194.69a28.86 28.86 0 000-40.81z"/></svg>
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</div>
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<div class="md-source__repository">
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GitHub
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</div>
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</a>
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</div>
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<ul class="md-nav__list" data-md-scrollfix>
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<li class="md-nav__item">
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<a href=".." title="Home" class="md-nav__link">
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Home
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../introduction/" title="Introduction" class="md-nav__link">
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Introduction
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../usage-overview/" title="Usage overview" class="md-nav__link">
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Usage overview
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../arguments/" title="Arguments" class="md-nav__link">
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Arguments
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../notifications/" title="Notifications" class="md-nav__link">
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Notifications
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../container-selection/" title="Container selection" class="md-nav__link">
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Container selection
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../private-registries/" title="Private registries" class="md-nav__link">
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Private registries
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../linked-containers/" title="Linked containers" class="md-nav__link">
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Linked containers
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../remote-hosts/" title="Remote hosts" class="md-nav__link">
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Remote hosts
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../secure-connections/" title="Secure connections" class="md-nav__link">
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Secure connections
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../stop-signals/" title="Stop signals" class="md-nav__link">
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Stop signals
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../lifecycle-hooks/" title="Lifecycle hooks" class="md-nav__link">
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Lifecycle hooks
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</a>
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</li>
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<li class="md-nav__item md-nav__item--active">
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<input class="md-nav__toggle md-toggle" data-md-toggle="toc" type="checkbox" id="__toc">
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<a href="./" title="Running multiple instances" class="md-nav__link md-nav__link--active">
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Running multiple instances
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</a>
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</li>
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</ul>
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</nav>
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</div>
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</div>
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</div>
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<div class="md-content">
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<article class="md-content__inner md-typeset">
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<a href="https://github.com/containrrr/watchtower/edit/master/docs/running-multiple-instances.md" title="Edit this page" class="md-content__button md-icon">
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<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M20.71 7.04c.39-.39.39-1.04 0-1.41l-2.34-2.34c-.37-.39-1.02-.39-1.41 0l-1.84 1.83 3.75 3.75M3 17.25V21h3.75L17.81 9.93l-3.75-3.75L3 17.25z"/></svg>
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</a>
|
||
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||
|
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<h1>Running multiple instances</h1>
|
||
|
|
|
||
|
|
<p>By default, Watchtower will clean up other instances and won't allow multiple instances running on the same Docker host or swarm. It is possible to override this behavior by defining a <a href="https://containrrr.github.io/watchtower/arguments/#filter_by_scope">scope</a> to each running instance. </p>
|
||
|
|
<p>Notice that:
|
||
|
|
- Multiple instances can't run with the same scope;
|
||
|
|
- An instance without a scope will clean up other running instances, even if they have a defined scope;</p>
|
||
|
|
<p>To define an instance monitoring scope, use the <code>--scope</code> argument or the <code>WATCHTOWER_SCOPE</code> environment variable on startup and set the <em>com.centurylinklabs.watchtower.scope</em> label with the same value for the containers you want to include in this instance's scope (including the instance itself).</p>
|
||
|
|
<p>For example, in a Docker Compose config file:</p>
|
||
|
|
<pre><code class="json">version: '3'
|
||
|
|
|
||
|
|
services:
|
||
|
|
app-monitored-by-watchtower:
|
||
|
|
image: myapps/monitored-by-watchtower
|
||
|
|
labels:
|
||
|
|
- "com.centurylinklabs.watchtower.scope=myscope"
|
||
|
|
|
||
|
|
watchtower:
|
||
|
|
image: containrrr/watchtower
|
||
|
|
volumes:
|
||
|
|
- /var/run/docker.sock:/var/run/docker.sock
|
||
|
|
command: --interval 30 --scope myscope
|
||
|
|
labels:
|
||
|
|
- "com.centurylinklabs.watchtower.scope=myscope"
|
||
|
|
</code></pre>
|
||
|
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