Hi Folks,
I'm prototyping the upgrade process for our Ceph Clusters. I've adopted the
Cluster following the docs, that works nicely 🙂 I then load my docker image
into a locally running container registry, as I'm in a disconnected
environment. I have a test Cluster with 3 VMs and no data, adopted at Octopus
and upgrading to Pacific. I'm running a MON, MGR, MDS and OSD on each VM.
I then attempt to upgrade:
ceph orch upgrade start --image localhost:5000/ceph/pacific:v16.2.15
Lots of logs below, but the summary appears to be that we initially fail to
upgrade the managers and get into a bad state. It looks like there is some
confusion in manager naming, and we end up with two managers on each machine
instead of one. Eventually Ceph reports a health warning:
$ ceph -s
cluster:
id: e773d9c2-6d8d-4413-8e8f-e38f248f5959
health: HEALTH_ERR
1 failed cephadm daemon(s)
Module 'cephadm' has failed: 'cephadm'
That does seem to eventually clean its self up and the upgrade appears to have
completed ("ceph versions" shows everything on Pacific), but it feels a bit
bumpy. Hoping someone has some guidance here. The containers on one host during
upgrade are shown below. Notice I somehow have two managers, where the names
are a single character different (a "-" replaced with a "."):
$ docker ps | grep mgr
2143b6f0e0e6 localhost:5000/ceph/pacific:v16.2.15
"/usr/bin/ceph-mgr -…" About a minute ago Up About a minute
ceph-e773d9c2-6d8d-4413-8e8f-e38f248f5959-mgr.raynor-sc-2
59c8cfddac64 ceph-daemon:v5.0.12-stable-5.0-octopus-centos-8
"/usr/bin/ceph-mgr -…" 14 minutes ago Up 14 minutes
ceph-e773d9c2-6d8d-4413-8e8f-e38f248f5959-mgr-raynor-sc-2
In the output of "ceph -w" I see this sort of stuff:
2024-08-14T13:45:13.003405+0000 mon.raynor-sc-1 [INF] Manager daemon
raynor-sc-3 is now available
2024-08-14T13:45:23.179699+0000 mon.raynor-sc-1 [ERR] Health check failed:
Module 'cephadm' has failed: 'cephadm' (MGR_MODULE_ERROR)
2024-08-14T13:45:22.372376+0000 mgr.raynor-sc-3 [ERR] Unhandled exception from
module 'cephadm' while running on mgr.raynor-sc-3: 'cephadm'
2024-08-14T13:45:24.761961+0000 mon.raynor-sc-1 [INF] Active manager daemon
raynor-sc-3 restarted
2024-08-14T13:45:24.766395+0000 mon.raynor-sc-1 [INF] Activating manager daemon
raynor-sc-3
2024-08-14T13:45:31.800989+0000 mon.raynor-sc-1 [INF] Manager daemon
raynor-sc-3 is now available
2024-08-14T13:45:32.874227+0000 mon.raynor-sc-1 [INF] Health check cleared:
MGR_MODULE_ERROR (was: Module 'cephadm' has failed: 'cephadm')
2024-08-14T13:45:32.874269+0000 mon.raynor-sc-1 [INF] Cluster is now healthy
2024-08-14T13:45:33.664602+0000 mon.raynor-sc-1 [INF] Active manager daemon
raynor-sc-3 restarted
2024-08-14T13:45:33.671809+0000 mon.raynor-sc-1 [INF] Activating manager daemon
raynor-sc-3
2024-08-14T13:45:34.050292+0000 mon.raynor-sc-1 [INF] Manager daemon
raynor-sc-3 is now available
2024-08-14T13:45:38.260385+0000 mon.raynor-sc-1 [WRN] Health check failed: 1
failed cephadm daemon(s) (CEPHADM_FAILED_DAEMON)
2024-08-14T13:45:43.462665+0000 mgr.raynor-sc-3 [ERR] Unhandled exception from
module 'cephadm' while running on mgr.raynor-sc-3: 'cephadm'
2024-08-14T13:45:44.770711+0000 mon.raynor-sc-1 [ERR] Health check failed:
Module 'cephadm' has failed: 'cephadm' (MGR_MODULE_ERROR)
2024-08-14T13:45:45.668379+0000 mon.raynor-sc-1 [INF] Active manager daemon
raynor-sc-3 restarted
2024-08-14T13:45:45.673206+0000 mon.raynor-sc-1 [INF] Activating manager daemon
raynor-sc-3
2024-08-14T13:45:45.673316+0000 mon.raynor-sc-1 [INF] Active manager daemon
raynor-sc-3 restarted
2024-08-14T13:45:45.689515+0000 mon.raynor-sc-1 [INF] Active manager daemon
raynor-sc-3 restarted
2024-08-14T13:45:45.694315+0000 mon.raynor-sc-1 [INF] Activating manager daemon
raynor-sc-3
2024-08-14T13:45:47.671192+0000 mon.raynor-sc-1 [INF] Active manager daemon
raynor-sc-3 restarted
2024-08-14T13:45:47.674805+0000 mon.raynor-sc-1 [INF] Activating manager daemon
raynor-sc-3
2024-08-14T13:45:47.675037+0000 mon.raynor-sc-1 [INF] Active manager daemon
raynor-sc-3 restarted
2024-08-14T13:45:47.697264+0000 mon.raynor-sc-1 [INF] Active manager daemon
raynor-sc-3 restarted
2024-08-14T13:45:47.700886+0000 mon.raynor-sc-1 [INF] Activating manager daemon
raynor-sc-3
And in the output of "ceph -W cephadm" I see:
2024-08-14T13:40:32.214742+0000 mgr.raynor-sc-1 [INF] Upgrade: First pull of
localhost:5000/ceph/pacific:v16.2.15
2024-08-14T13:40:34.108767+0000 mgr.raynor-sc-1 [INF] Upgrade: Target is
localhost:5000/ceph/pacific:v16.2.15 with id
3c4eff6082ae7530e7eda038765ce400beb1bc1b8df67dffb45910eb45b06b2c
2024-08-14T13:40:34.112388+0000 mgr.raynor-sc-1 [INF] Upgrade: Checking mgr
daemons...
2024-08-14T13:40:34.112722+0000 mgr.raynor-sc-1 [INF] Upgrade: Need to upgrade
myself (mgr.raynor-sc-1)
2024-08-14T13:40:35.456432+0000 mgr.raynor-sc-1 [INF] It is presumed safe to
stop ['mgr.raynor-sc-2']
2024-08-14T13:40:35.456620+0000 mgr.raynor-sc-1 [INF] Upgrade: It is presumed
safe to stop ['mgr.raynor-sc-2']
2024-08-14T13:40:35.456771+0000 mgr.raynor-sc-1 [INF] Upgrade: Redeploying
mgr.raynor-sc-2
2024-08-14T13:40:35.481790+0000 mgr.raynor-sc-1 [INF] Deploying daemon
mgr.raynor-sc-2 on raynor-sc-2
2024-08-14T13:42:37.608895+0000 mgr.raynor-sc-1 [INF] refreshing raynor-sc-3
facts
2024-08-14T13:42:39.744098+0000 mgr.raynor-sc-1 [INF] refreshing raynor-sc-1
facts
2024-08-14T13:42:40.081740+0000 mgr.raynor-sc-1 [INF] refreshing raynor-sc-2
facts
2024-08-14T13:42:40.937375+0000 mgr.raynor-sc-1 [INF] Applying drive group
all-available-devices on host raynor-sc-1...
2024-08-14T13:42:40.937732+0000 mgr.raynor-sc-1 [INF] Applying drive group
all-available-devices on host raynor-sc-2...
2024-08-14T13:42:40.938079+0000 mgr.raynor-sc-1 [INF] Applying drive group
all-available-devices on host raynor-sc-3...
2024-08-14T13:42:46.226231+0000 mgr.raynor-sc-1 [INF] Upgrade: Target is
localhost:5000/ceph/pacific:v16.2.15 with id
3c4eff6082ae7530e7eda038765ce400beb1bc1b8df67dffb45910eb45b06b2c
2024-08-14T13:42:46.229604+0000 mgr.raynor-sc-1 [INF] Upgrade: Checking mgr
daemons...
2024-08-14T13:42:46.229727+0000 mgr.raynor-sc-1 [INF] Upgrade: Need to upgrade
myself (mgr.raynor-sc-1)
2024-08-14T13:42:47.696110+0000 mgr.raynor-sc-1 [INF] It is presumed safe to
stop ['mgr.raynor-sc-3']
My take on this is that we first start to attempt upgrade of the mgr on
raynor-sc-2, and don't seem to detect it's not quite worked. Interestingly it
seems that there is a two minute gap between the deploying line and the
following line, I wonder if something is failing to come up and we're
proceeding after a timer expires?
Any pointers are much appreciated.
Many thanks,
Alex
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