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Debian 10 to 11 » History » Version 4

Jamila Khan, 12/22/2021 04:05 PM

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{{lastupdated_at}} by {{lastupdated_by}}
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h1. Debian 10 to 11
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h2. Pre update check
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h3. Stretch check
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Check if any sources still point to stretch
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<pre>
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cd /etc/apt
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grep -nr stretch .
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</pre>
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If so, bring those up to buster and run updates first
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https://redmine.palantetech.coop/projects/commons/wiki/Debian_9_to_10
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h3. Metapackage check
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Check to make sure kernel metapackage is installed, not just specific kernel
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@dpkg -l "linux-image*" | grep ^ii | grep -i meta@ should have results
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If not, install metapackage
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https://www.debian.org/releases/bullseye/amd64/release-notes/ch-upgrading.en.html#kernel-metapackage
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h3. Purged package check
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List and purge removed packages with config files remaining
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https://www.debian.org/releases/bullseye/amd64/release-notes/ch-upgrading.en.html#purge-removed-packages
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<pre>
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aptitude search '~c'
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aptitude purge '~c'
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</pre>
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h3. Hold check
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These commands should have no results
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<pre>
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aptitude search "~ahold" 
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dpkg --get-selections | grep 'hold$'
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</pre>
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h2. Update sources list
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Check which sources exist that point to buster
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<pre>
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cd /etc/apt
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grep -nr buster .
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</pre>
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Edit the main list, and any others that come up
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<pre>
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vim /etc/apt/sources.list
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</pre>
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replace buster with bullseye
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<pre>
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:%s/buster/bullseye/g
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</pre>
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replace bullseye/updates with bullseye-security
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<pre>
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:%s/bullseye\/updates/bullseye-security/g
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</pre>
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https://www.debian.org/releases/bullseye/amd64/release-notes/ch-information.en.html#security-archive
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h2. Upgrade the system
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h3. Check for Necessary Disk Space
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<pre>apt-get -o APT::Get::Trivial-Only=true dist-upgrade</pre>
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h3. Update the sources
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<pre>
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apt-get update
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</pre>
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h3. Minimal Upgrade
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<pre> apt-get upgrade</pre>
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* if it asks whether to change /etc/apt/trusted.gpg.d/debian-archive-jessie-security-automatic.gpg, say yes
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* other things it asks to change, say no, keep the existing file
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h3. Full Upgrade
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<pre>
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apt-get dist-upgrade
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</pre>
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h3. Upgrade MySQL databases (if MySQL/MariaDB installed)
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<pre>
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mysql_upgrade
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</pre>
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h3. Check that things are up
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* if a web server, make sure websites are up
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* if an infrastructure server, test and make sure all parts of the infrastructure are working properly
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* if a PTC server check the "recovery plan":https://redmine.palantetech.coop/projects/pt/wiki/Recovery_Plan entry for that server to make sure everything has recovered
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h3. Check what packages were removed
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* @cat /var/log/apt/history.log | grep Remove@
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* make sure there was nothing important in there
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h2. Common problems
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tbd
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