With Debian 12+ the interactive zkCli.sh is completely broken, failing
to load the JLine module regardless of what is done, and no one in the
project seems to care about that.
Instead let's swap this out for the (non-interactive) GO-based zkcli of
https://github.com/go-zkcli/zkcli instead, as this suits our needs
nicely.
This helps work around apt issues when running from the oneshot
update-pvc-daemons playbook. On a new install, this will be OK. On an
upgrade, the apt tasks will fail OK but then the verification that
pvc-client-cli will ensure that things are actually sane before
proceeding.
This conditional will ensure that, the first time pvc.conf is installed
(or, subsequent times, until it stabilizes), the legacy configs will not
be removed. Then, on the next run in which pvc.conf does not change,
they will be removed.
This should provide a safety valve during a 0.9.83 update with the
update-pvc-daemons playbook: if the update succeeds, on the next run,
the legacy configs will be purged; otherwise, they will still be present
and can be used for fallback just in case.
This probably isn't needed, but just in case I'd rather be safe.
Needed because ceph-mgr seems to crash frequently under Debian 12 when
adding or removing OSDs. The default settings do not restart it
properly, so this override does.
Uses a much nicer CPU tuning configuration, leveraging systemd's
AllowedCPUs and CPUAffinity options within a set of slices (some
default, some custom).
Configuration is also greatly simplified versus the previous
implementation, simply asking for a number of CPUS for both the system
and OSDs, and calculating everything else that is required.
Also switches (back) to the v2 unified cgroup hierarchy by default as
required by the systemd AllowedCPUs directive.
This functionality simply did not work, with Libvirt continuing to dump
its processes into the root cset thus defeating the purpose entirely.
Just remove it, from some very initial testing it isn't worth the
headache.
Joshua Boniface