add postgres post
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</div></div></div>
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<div id="divbody"><div class="content">
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<h3>all posts</h3>
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<h4 class='allposts_header'>October 2020</h4>
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<ul>
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<li><a href="./mastodon-postgres-upgrade-fun.html">mastodon postgres upgrade fun</a> — October 28, 2020</li>
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</ul>
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<h4 class='allposts_header'>June 2020</h4>
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<ul>
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<li><a href="./default-branch-name.html">default branch name</a> — June 16, 2020</li>
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@ -64,10 +64,10 @@
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<li><a href="tag_post-mortem.html">post-mortem</a> — 1 post</li>
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<li><a href="tag_save-for-later.html">save-for-later</a> — 1 post</li>
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<li><a href="tag_snow.html">snow</a> — 1 post</li>
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<li><a href="tag_social-networks.html">social-networks</a> — 1 post</li>
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<li><a href="tag_social-networks.html">social-networks</a> — 2 posts</li>
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<li><a href="tag_ssh.html">ssh</a> — 1 post</li>
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<li><a href="tag_sysadmin.html">sysadmin</a> — 10 posts</li>
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<li><a href="tag_tilde.html">tilde</a> — 10 posts</li>
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<li><a href="tag_sysadmin.html">sysadmin</a> — 11 posts</li>
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<li><a href="tag_tilde.html">tilde</a> — 11 posts</li>
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<li><a href="tag_travel.html">travel</a> — 1 post</li>
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<li><a href="tag_ubuntu.html">ubuntu</a> — 2 posts</li>
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<li><a href="tag_update.html">update</a> — 2 posts</li>
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@ -2,9 +2,25 @@
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<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:dc="http://purl.org/dc/elements/1.1/">
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<channel><title>blog // ~ben</title><link>https://tilde.team/~ben/blog/index.html</link>
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<description>a blog about tildes and other things</description><language>en</language>
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<lastBuildDate>Tue, 16 Jun 2020 15:26:33 -0400</lastBuildDate>
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<pubDate>Tue, 16 Jun 2020 15:26:33 -0400</pubDate>
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<atom:link href="https://tilde.team/~ben/blog/feed.rss" rel="self" type="application/rss+xml" />
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<lastBuildDate>Wed, 28 Oct 2020 16:33:00 -0400</lastBuildDate>
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<pubDate>Wed, 28 Oct 2020 16:33:00 -0400</pubDate>
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<atom:link href="https://tilde.team/~ben/blog/feed.rss" rel="self" type="application/rss+xml">
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<item><title>
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mastodon postgres upgrade fun
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</title><description><![CDATA[
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<p>howdy friends!</p>
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<p>if you’re a mastodon user on <a href="https://tilde.zone">tilde.zone</a> (the tildeverse
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mastodon instance), you might’ve noticed some downtime recently.</p>
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<p>here’s a quick recap of what went down during the upgrade process.</p>
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<hr />
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]]></description><link>https://tilde.team/~ben/blog/mastodon-postgres-upgrade-fun.html</link>
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<guid>https://tilde.team/~ben/blog/./mastodon-postgres-upgrade-fun.html</guid>
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<dc:creator>~ben</dc:creator>
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<pubDate>Wed, 28 Oct 2020 16:31:39 -0400</pubDate></item>
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<item><title>
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default branch name
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</title><description>< (the tildeverse
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mastodon instance), you might've noticed some downtime recently.
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here's a quick recap of what went down during the upgrade process.
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---
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we run the current stable version of postgresql from the [postgres
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apt repos](https://wiki.postgresql.org/wiki/Apt). postgres [13](
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https://www.postgresql.org/docs/release/13.0/) was released recently
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and the apt upgrades automatically created a new cluster running 13.
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the database for mastodon has gotten quite large (about 16gb) which
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complicates this upgrade a bit. this was my inital plan:
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- drop the 13 cluster created by the apt package upgrades
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- upgrade the 12-main cluster to 13
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- drop the 12 cluster
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these steps appeared to work fine, but closer inspection afterwards
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led me to discover that the new cluster had ended up with `SQL_ASCII`
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encoding somehow. this is not a situation we want to be in. time to fix it.
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here's the new plan:
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- stop mastodon
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for i in streaming sidekiq web; do systemctl stop mastodon-$i; done
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- dump current database state
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pg_dump mastodon_production > db.dump
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- drop and recreate cluster with utf8 encoding
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pg_dropcluster 13 main --stop
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pg_createcluster --locale=en_US.UTF8 13 main --start
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- restore backup
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sudo -u postgres psql -c "create user mastodon createdb;"
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sudo -u mastodon createdb -E utf8 mastodon_production
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sudo -u mastodon psql < db.dump
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i'm still not 100% sure how the encoding reverted to ascii but
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it seems that the locale was not correctly set while running the
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apt upgrades...
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if this happens to you, hopefully this helps you wade out while
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keeping all your data :)
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tags: sysadmin, tilde, social-networks
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@ -24,6 +24,23 @@
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<div id="description">a blog about tildes and other things</div>
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</div></div></div>
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<div id="divbody"><div class="content">
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<h3><a class="ablack" href="mastodon-postgres-upgrade-fun.html">
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mastodon postgres upgrade fun
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</a></h3>
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<!-- bashblog_timestamp: #202010281631.39# -->
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<div class="subtitle">October 28, 2020 —
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~ben
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</div>
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<!-- text begin -->
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<p>howdy friends!</p>
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<p>if you’re a mastodon user on <a href="https://tilde.zone">tilde.zone</a> (the tildeverse
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mastodon instance), you might’ve noticed some downtime recently.</p>
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<p>here’s a quick recap of what went down during the upgrade process.</p>
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<p class="readmore"><a href="./mastodon-postgres-upgrade-fun.html">read more...</a></p>
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<h3><a class="ablack" href="mastodon.html">
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mastodon
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</a></h3>
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@ -24,6 +24,23 @@
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<div id="description">a blog about tildes and other things</div>
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</div></div></div>
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<div id="divbody"><div class="content">
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<h3><a class="ablack" href="mastodon-postgres-upgrade-fun.html">
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mastodon postgres upgrade fun
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</a></h3>
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<!-- bashblog_timestamp: #202010281631.39# -->
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<div class="subtitle">October 28, 2020 —
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~ben
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</div>
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<!-- text begin -->
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<p>howdy friends!</p>
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<p>if you’re a mastodon user on <a href="https://tilde.zone">tilde.zone</a> (the tildeverse
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mastodon instance), you might’ve noticed some downtime recently.</p>
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<p>here’s a quick recap of what went down during the upgrade process.</p>
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<p class="readmore"><a href="./mastodon-postgres-upgrade-fun.html">read more...</a></p>
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<h3><a class="ablack" href="tools-and-services.html">
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tools and services
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</a></h3>
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@ -24,6 +24,23 @@
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<div id="description">a blog about tildes and other things</div>
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</div></div></div>
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<div id="divbody"><div class="content">
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<h3><a class="ablack" href="mastodon-postgres-upgrade-fun.html">
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mastodon postgres upgrade fun
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</a></h3>
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<!-- bashblog_timestamp: #202010281631.39# -->
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<div class="subtitle">October 28, 2020 —
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~ben
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</div>
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<!-- text begin -->
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<p>howdy friends!</p>
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<p>if you’re a mastodon user on <a href="https://tilde.zone">tilde.zone</a> (the tildeverse
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mastodon instance), you might’ve noticed some downtime recently.</p>
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<p>here’s a quick recap of what went down during the upgrade process.</p>
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<p class="readmore"><a href="./mastodon-postgres-upgrade-fun.html">read more...</a></p>
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<h3><a class="ablack" href="tools-and-services.html">
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tools and services
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</a></h3>
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@ -17,7 +17,7 @@ if [ ! -f "$manfile" ]; then
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exit 1
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fi
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zcat "$manfile" \
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zcat -f "$manfile" \
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exit 0
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