[SAC] [OSGeo] #2827: Upgrade osgeo3 lxd host to Ubuntu 22.04

[OSGeo]

#2827: Upgrade osgeo3 lxd host  to Ubuntu 22.04
---------------------------+---------------------------------------
 Reporter:  robe           |       Owner:  sac@…
     Type:  task           |      Status:  closed
 Priority:  normal         |   Milestone:  Sysadmin Contract 2023-I
Component:  Systems Admin  |  Resolution:  fixed
 Keywords:                 |
---------------------------+---------------------------------------
Changes (by robe):

 * status:  new => closed
 * resolution:   => fixed

Comment:

 Took a little longer than I had hoped.

 nexus after the upgrade of host, the docker would not start with error.
 {{{
 cgroups: cannot found cgroup mount destination

 }}}

 Doing the same fix as I did on osgeo4 (to allow creating old containers
 did the trick)

 {{{
  https://discuss.linuxcontainers.org/t/2nd-system-upgraded-from-
 ubuntu-20-04-w-working-lxd-to-ubuntu-22-04-lxd-again-not-working/14009/30

 {{{
 Edit /etc/default/grub and ensure that GRUB_CMDLINE_LINUX contains
 systemd.unified_cgroup_hierarchy=false:

 E.g.

 GRUB_CMDLINE_LINUX="systemd.unified_cgroup_hierarchy=false"

 Then run:

 sudo update-grub
 sudo reboot

 }}}

 In the process I also ended up upgrading nexus and docker. I'll write up
 in separate ticket.
-- 
Ticket URL: <https://trac.osgeo.org/osgeo/ticket/2827#comment:5>
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