Hi, follow these instructions: https://docs.ceph.com/en/quincy/rados/operations/add-or-rm-mons/#removing-monitors-from-an-unhealthy-cluster As you are using containers, you might need to specify the --mon-data directory (/var/lib/CLUSTER_UUID/mon.MONNAME) (actually I never did this in an orchestrator environment) Good luck. Am Do., 2. Nov. 2023 um 12:48 Uhr schrieb Mohamed LAMDAOUAR < mohamed.lamdaouar@xxxxxxx>: > Hello Boris, > > I have one server monitor up and two other servers of the cluster are also > up (These two servers are not monitors ) . > I have four other servers down (the boot disk is out) but the osd data > disks are safe. > I reinstalled the OS on a new SSD disk. How can I rebuild my cluster with > only one mons. > If you would like, you can join me for a meeting. I will give you more > information about the cluster. > > Thanks for your help, I'm very stuck because the data is present but I > don't know how to add the old osd in the cluster to recover the data. > > > > Le jeu. 2 nov. 2023 à 11:55, Boris Behrens <bb@xxxxxxxxx> a écrit : > >> Hi Mohamed, >> are all mons down, or do you still have at least one that is running? >> >> AFAIK: the mons save their DB on the normal OS disks, and not within the >> ceph cluster. >> So if all mons are dead, which mean the disks which contained the mon data >> are unrecoverable dead, you might need to bootstrap a new cluster and add >> the OSDs to the new cluster. This will likely include tinkering with cephx >> authentication, so you don't wipe the old OSD data. >> >> If you still have at least ONE mon alive, you can shut it down, and remove >> all the other mons from the monmap and start it again. You CAN have >> clusters with only one mon. >> >> Or is did your host just lost the boot disk and you just need to bring it >> up somehow? losing 4x2 NVME disks at the same time, sounds a bit strange. >> >> Am Do., 2. Nov. 2023 um 11:34 Uhr schrieb Mohamed LAMDAOUAR < >> mohamed.lamdaouar@xxxxxxx>: >> >> > Hello, >> > >> > I have 7 machines on CEPH cluster, the service ceph runs on a docker >> > container. >> > Each machine has 4 hdd of data (available) and 2 nvme sssd (bricked) >> > During a reboot, the ssd bricked on 4 machines, the data are >> available on >> > the HDD disk but the nvme is bricked and the system is not available. >> is it >> > possible to recover the data of the cluster (the data disk are all >> > available) >> > _______________________________________________ >> > ceph-users mailing list -- ceph-users@xxxxxxx >> > To unsubscribe send an email to ceph-users-leave@xxxxxxx >> > >> >> >> -- >> Die Selbsthilfegruppe "UTF-8-Probleme" trifft sich diesmal abweichend im >> groüen Saal. >> _______________________________________________ >> ceph-users mailing list -- ceph-users@xxxxxxx >> To unsubscribe send an email to ceph-users-leave@xxxxxxx >> > -- Die Selbsthilfegruppe "UTF-8-Probleme" trifft sich diesmal abweichend im groüen Saal. _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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