Hi Paul, That is the initial question, is it possible to recover my ceph cluster (docker based) if I loose all information stored in the etcd...
I don't know if anyone has a clear answer to these questions.. 1.- I bootstrap a complete cluster mons, osds, mgr, mds, nfs, etc using etcd as a key store 2.- There is an electric blackout and all nodes of my cluster goes down and all data in my etcd is lost (but muy osd disks have useful data) Thanks a lot Óscar El mar., 16 jul. 2019 17:58, Oscar Segarra <oscar.sega...@gmail.com> escribió: > Thanks a lot Janne, > > Well, maybe I'm missunderstanding how ceph stores keyrings in etcd... > > > https://github.com/ceph/ceph-container/blob/master/src/daemon/config.kv.etcd.sh > > bootstrap="bootstrap${array[1]}Keyring" > etcdctl "${ETCDCTL_OPTS[@]}" "${KV_TLS[@]}" set "${CLUSTER_PATH}"/" > ${bootstrap}" < "$keyring" > But I'd like to know what happens if etcd loses the keyrings sotred in it > when etcd is used to deploy ceph daemons as containers: > > https://hub.docker.com/r/ceph/daemon/ > > With KV backend: > > docker run -d --net=host \ > --privileged=true \ > --pid=host \ > -v /dev/:/dev/ \ > -e OSD_DEVICE=/dev/vdd \ > -e KV_TYPE=etcd \ > -e KV_IP=192.168.0.20 \ > ceph/daemon osd > > Thanks a lot for your help, > > Óscar > > > > > El mar., 16 jul. 2019 17:34, Janne Johansson <icepic...@gmail.com> > escribió: > >> Den mån 15 juli 2019 kl 23:05 skrev Oscar Segarra < >> oscar.sega...@gmail.com>: >> >>> Hi Frank, >>> Thanks a lot for your quick response. >>> Yes, the use case that concerns me is the following: >>> 1.- I bootstrap a complete cluster mons, osds, mgr, mds, nfs, etc using >>> etcd as a key store >>> >> >> as a key store ... for what? Are you stuffing anything ceph-related >> there? If so, please tell us what. >> >> As previously said, ceph has no etcd concept so unless you somehow pull >> stuff out of ceph and feed it into etcd, ceph will be completely careless >> if you lose etcd data. >> >> -- >> May the most significant bit of your life be positive. >> >
_______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
