Hi Lucas,

About the -proposed, you're right - I added only the universe repository.

Regarding the original issue, here is what happens:

The resource-agents package was installed as a dependency for pacemaker:

Before d-r-u:

ubuntu@pgsrv02:~$ dpkg -l | grep -i resource-agent
ii  pacemaker-resource-agents       2.0.3-3ubuntu4.3                  all          cluster resource manager general resource agents
ii  resource-agents                 1:4.5.0-2ubuntu2.2                amd64        Cluster Resource Agents


Running d-r-u:

ubuntu@pgsrv02:~$ sudo do-release-upgrade
...

81 packages are going to be removed. 

 Continue [yN]  Details [d]

Remove (was auto installed) accountsservice alsa-topology-conf 
  alsa-ucm-conf at bsdmainutils cluster-glue cryptsetup-run 
  dconf-gsettings-backend dconf-service gcc-10-base glib-networking 
  glib-networking-common glib-networking-services 
  gsettings-desktop-schemas language-selector-common 
  libaccountsservice0 libasound2 libasound2-data libcanberra0 
  libcbor0.6 libdconf1 libdns-export1109 libevent-2.1-7 libfl2 
  libfuse2 libhogweed5 libjson-c4 liblrm2 libmpdec2 libmysqlclient21 
  libnettle7 libntfs-3g883 libogg0 libopenhpi3 libopenipmi0 
  libperl5.30 libplumbgpl2 libproxy1v5 libpython3.8 
  libpython3.8-minimal libpython3.8-stdlib libqb0 libreadline5 
  libsepol1 libsnmp-base libsnmp35 libsnmp40 libsoup2.4-1 
  libsoup2.4-common libstonith1 libtdb1 libtimedate-perl liburcu6 
  libvorbis0a libvorbisfile3 libxml2-utils libxmlb1 
  linux-headers-5.4.0-109 linux-headers-5.4.0-109-generic 
  linux-headers-5.4.0-148 linux-headers-5.4.0-148-generic 
  linux-image-5.4.0-109-generic linux-modules-5.4.0-109-generic 
  ltrace lz4 mysql-common ncal net-tools openhpid perl-modules-5.30 
  popularity-contest python3-entrypoints python3-requests-unixsocket 
  python3-simplejson python3.8 python3.8-minimal resource-agents 
  resource-agents-extra session-migration sound-theme-freedesktop 
  

Notice resource-agents and resource-agents-extra are in the remove list. It's a common action from users to accept the removal after d-r-u.  

 After reboot:
 ubuntu@pgsrv02:~$ dpkg -l | grep -i resource-agent
ii  pacemaker-resource-agents             2.1.2-1ubuntu3.1                        all          cluster resource manager general resource agents
rc  resource-agents                       1:4.7.0-1ubuntu7                        all          Transitional package for the resource-agents
ii  resource-agents-base                  1:4.7.0-1ubuntu7                        all          Cluster Resource Agents curated by Ubuntu
ii  resource-agents-common                1:4.7.0-1ubuntu7                        amd64        Common files used by the Cluster Resource Agents

And now there is no resource-agents-extra, and the Pacemaker cluster is broken.

For what I see, the issue is that pacemaker-resource-agents has moved from:

Version: 2.0.3-3ubuntu4.3
Depends: procps, resource-agents

To:

Version: 2.1.2-1ubuntu3.1
Depends: procps, resource-agents-base
Suggests: resource-agents-extra

So the -extra packages is not required, but some of its content was part of the resources-agents previously (at least the pgsql).

This is a different bug from the one reported here but related. Any suggestions on how to handle this?