Hi,
were you able to recover your cluster or is this still an issue?
What exactly do you mean by this?
It generally fails to recover in the middle and starts from scratch.
Are OSDs "flapping" or are there other issues as well? Please provide
more details what exactly happens.
There are a couple of troubleshooting threads on this list which could
help. First thing I would try is to set the "nodown" flag ('ceph osd
set nodown') to prevent OSDs from being marked down, this has been
quite useful in the past. Are the OSD nodes running out of resources?
Zitat von v1tnam@xxxxxxxxx:
I have an 8-node cluster with old hardware. a week ago 4 nodes went
down and the CEPH cluster went nuts.
All pgs became unknown and montors took too long to be in sync.
So i reduced the number of mons to one and mgrs to one as well
Now the recovery starts with 100% unknown pgs and then pgs start to
move ot inactive . It generally fails to recover in the middle and
starts from scratch.
It's hold hardware and OSDs have lots of slow ops and probably
number of bad sectors as well
Any suggestions on how to tackle this. It's a nautilus cluster and
pretty old (8-year old hardware)
Thanks
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