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@ -267,13 +229,16 @@
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<input class="md-toggle md-nav__toggle" data-md-toggle="toc" type="checkbox" id="__toc">
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Notifications
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@ -281,13 +246,18 @@
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@ -302,7 +272,7 @@
Available services
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<nav class="md-nav" aria-label="Available services">
<ul class="md-nav__list">
<li class="md-nav__item">
@ -331,6 +301,13 @@
Gotify
</a>
</li>
<li class="md-nav__item">
<a href="#containrrrshoutrrr" class="md-nav__link">
containrrr/shoutrrr
</a>
</li>
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@ -338,10 +315,6 @@
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@ -444,13 +417,18 @@
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@ -465,7 +443,7 @@
Available services
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<li class="md-nav__item">
@ -494,6 +472,13 @@
Gotify
</a>
</li>
<li class="md-nav__item">
<a href="#containrrrshoutrrr" class="md-nav__link">
containrrr/shoutrrr
</a>
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@ -501,10 +486,6 @@
</li>
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@ -517,7 +498,12 @@
<article class="md-content__inner md-typeset">
<a href="https://github.com/containrrr/watchtower/edit/master/docs/notifications.md" title="Edit this page" class="md-icon md-content__icon">&#xE3C9;</a>
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</a>
<h1 id="notifications">Notifications<a class="headerlink" href="#notifications" title="Permanent link">&para;</a></h1>
@ -528,6 +514,7 @@ The types of notifications to send are set by passing a comma-separated list of
<li><code>slack</code> to send notifications through a Slack webhook</li>
<li><code>msteams</code> to send notifications via MSTeams webhook</li>
<li><code>gotify</code> to send notifications via Gotify</li>
<li><code>shoutrrr</code> to send notifications via <a href="https://github.com/containrrr/shoutrrr">containrrr/shoutrrr</a></li>
</ul>
<blockquote>
<p>There is currently a <a href="https://github.com/spf13/viper/issues/380">bug</a> in Viper, which prevents comma-separated slices to be used when using the environment variable. A workaround is available where we instead put quotes around the environment variable value and replace the commas with spaces, as <code>WATCHTOWER_NOTIFICATIONS="slack msteams"</code></p>
@ -536,7 +523,8 @@ The types of notifications to send are set by passing a comma-separated list of
</blockquote>
<h2 id="settings">Settings<a class="headerlink" href="#settings" title="Permanent link">&para;</a></h2>
<ul>
<li><code>--notifications-level</code> (env. <code>WATCHTOWER_NOTIFICATIONS_LEVEL</code>): Controls the log level which is used for the notifications. If omitted, the default log level is <code>info</code>. Possible values are: <code>panic</code>, <code>fatal</code>, <code>error</code>, <code>warn</code>, <code>info</code> or <code>debug</code>.</li>
<li><code>--notifications-level</code> (env. <code>WATCHTOWER_NOTIFICATIONS_LEVEL</code>): Controls the log level which is used for the notifications. If omitted, the default log level is <code>info</code>. Possible values are: <code>panic</code>, <code>fatal</code>, <code>error</code>, <code>warn</code>, <code>info</code>, <code>debug</code> or <code>trace</code>.</li>
<li>Watchtower will post a notification every time it is started. This behavior <a href="https://containrrr.github.io/watchtower/arguments/#without_sending_a_startup_message">can be changed</a> with an argument. </li>
</ul>
<h2 id="available_services">Available services<a class="headerlink" href="#available_services" title="Permanent link">&para;</a></h2>
<h3 id="email">Email<a class="headerlink" href="#email" title="Permanent link">&para;</a></h3>
@ -566,6 +554,53 @@ The types of notifications to send are set by passing a comma-separated list of
containrrr/watchtower
</code></pre>
<p>The previous example assumes, that you already have an SMTP server up and running you can connect to. If you don't or you want to bring up watchtower with your own simple SMTP relay the following <code>docker-compose.yml</code> might be a good start for you.</p>
<p>The following example assumes, that your domain is called <code>your-domain.com</code> and that you are going to use a certificate valid for <code>smtp.your-domain.com</code>. This hostname has to be used as <code>WATCHTOWER_NOTIFICATION_EMAIL_SERVER</code> otherwise the TLS connection is going to fail with <code>Failed to send notification email</code> or <code>connect: connection refused</code>. We also have to add a network for this setup in order to add an alias to it. If you also want to enable DKIM or other features on the SMTP server, you will find more information at <a href="https://hub.docker.com/r/freinet/postfix-relay">freinet/postfix-relay</a>.</p>
<p>Example including an SMTP relay:</p>
<pre><code class="yaml">---
version: &quot;3.8&quot;
services:
watchtower:
image: containrrr/watchtower:latest
container_name: watchtower
environment:
WATCHTOWER_MONITOR_ONLY: &quot;true&quot;
WATCHTOWER_NOTIFICATIONS: email
WATCHTOWER_NOTIFICATION_EMAIL_FROM: from-address@your-domain.com
WATCHTOWER_NOTIFICATION_EMAIL_TO: to-address@your-domain.com
# you have to use a network alias here, if you use your own certificate
WATCHTOWER_NOTIFICATION_EMAIL_SERVER: smtp.your-domain.com
WATCHTOWER_NOTIFICATION_EMAIL_SERVER_PORT: 25
WATCHTOWER_NOTIFICATION_EMAIL_DELAY: 2
volumes:
- /var/run/docker.sock:/var/run/docker.sock
networks:
- watchtower
depends_on:
- postfix
# SMTP needed to send out status emails
postfix:
image: freinet/postfix-relay:latest
expose:
- 25
environment:
MAILNAME: somename.your-domain.com
TLS_KEY: &quot;/etc/ssl/domains/your-domain.com/your-domain.com.key&quot;
TLS_CRT: &quot;/etc/ssl/domains/your-domain.com/your-domain.com.crt&quot;
TLS_CA: &quot;/etc/ssl/domains/your-domain.com/intermediate.crt&quot;
volumes:
- /etc/ssl/domains/your-domain.com/:/etc/ssl/domains/your-domain.com/:ro
networks:
watchtower:
# this alias is really important to make your certificate work
aliases:
- smtp.your-domain.com
networks:
watchtower:
external: false
</code></pre>
<h3 id="slack">Slack<a class="headerlink" href="#slack" title="Permanent link">&para;</a></h3>
<p>If watchtower is monitoring the same Docker daemon under which the watchtower container itself is running (i.e. if you volume-mounted <em>/var/run/docker.sock</em> into the watchtower container) then it has the ability to update itself. If a new version of the <em>containrrr/watchtower</em> image is pushed to the Docker Hub, your watchtower will pull down the new image and restart itself automatically.</p>
<p>To receive notifications in Slack, add <code>slack</code> to the <code>--notifications</code> option or the <code>WATCHTOWER_NOTIFICATIONS</code> environment variable.</p>
@ -614,9 +649,30 @@ The types of notifications to send are set by passing a comma-separated list of
-e WATCHTOWER_NOTIFICATION_GOTIFY_TOKEN=&quot;SuperSecretToken&quot; \
containrrr/watchtower
</code></pre>
<p>If you want to disable TLS verification for the Gotify instance, you can use either <code>-e WATCHTOWER_NOTIFICATION_GOTIFY_TLS_SKIP_VERIFY=true</code> or <code>--notification-gotify-tls-skip-verify</code>. </p>
<h3 id="containrrrshoutrrr"><a href="https://github.com/containrrr/shoutrrr">containrrr/shoutrrr</a><a class="headerlink" href="#containrrrshoutrrr" title="Permanent link">&para;</a></h3>
<p>To send notifications via shoutrrr, the following command-line options, or their corresponding environment variables, can be set:</p>
<ul>
<li><code>--notification-url</code> (env. <code>WATCHTOWER_NOTIFICATION_URL</code>): The shoutrrr service URL to be used.</li>
</ul>
<p>Go to <a href="https://containrrr.github.io/shoutrrr/services/overview">containrrr.github.io/shoutrrr/services/overview</a> to learn more about the different service URLs you can use.
You can define multiple services by space separating the URLs. (See example below)</p>
<p>You can customize the message posted by setting a template.</p>
<ul>
<li><code>--notification-template</code> (env. <code>WATCHTOWER_NOTIFICATION_TEMPLATE</code>): The template used for the message.</li>
</ul>
<p>The template is a Go <a href="https://golang.org/pkg/text/template/">template</a> and the you format a list of <a href="https://pkg.go.dev/github.com/sirupsen/logrus?tab=doc#Entry">log entries</a>.</p>
<p>The default value if not set is <code>{{range .}}{{.Message}}{{println}}{{end}}</code>. The example below uses a template that also outputs timestamp and log level.</p>
<p>Example:</p>
<pre><code class="bash">docker run -d \
--name watchtower \
-v /var/run/docker.sock:/var/run/docker.sock \
-e WATCHTOWER_NOTIFICATIONS=shoutrrr \
-e WATCHTOWER_NOTIFICATION_URL=&quot;discord://token@channel slack://watchtower@token-a/token-b/token-c&quot; \
-e WATCHTOWER_NOTIFICATION_TEMPLATE=&quot;{{range .}}{{.Time.Format \&quot;2006-01-02 15:04:05\&quot;}} ({{.Level}}): {{.Message}}{{println}}{{end}}&quot; \
containrrr/watchtower
</code></pre>
@ -633,34 +689,34 @@ The types of notifications to send are set by passing a comma-separated list of
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