Hello, Thank you for the steps. We’ll follow these steps to stop/start our cluster. Thanks, Tim > On Apr 7, 2017, at 8:12 PM, Serkan Çoban <cobanserkan@xxxxxxxxx> wrote: > > Below steps are taken from redhat documentation: > > Follow the below procedure for Shutting down the Ceph Cluster: > 1. Stop the clients from using the RBD images/Rados Gateway on this > cluster or any other clients. > 2. The cluster must be in healthy state before proceeding. > 3. Set the noout, norecover, norebalance, nobackfill, nodown and pause flags > #ceph osd set noout > #ceph osd set norecover > #ceph osd set norebalance > #ceph osd set nobackfill > #ceph osd set nodown > #ceph osd set pause > 4. Shutdown osd nodes one by one > 5. Shutdown monitor nodes one by one > 6. Shutdown admin node > > For Bringing up follow the below order: > 1. Power on the admin node > 2. Power on the monitor nodes > 3. Power on the osd nodes > 4. Wait for all the nodes to come up , Verify all the services are > up and the connectivity is fine between the nodes. > 5. Unset all the noout,norecover,noreblance, nobackfill, nodown and > pause flags. > #ceph osd unset noout > #ceph osd unset norecover > #ceph osd unset norebalance > #ceph osd unset nobackfill > #ceph osd unset nodown > #ceph osd unset pause > 6. Check and verify the cluster is in healthy state, Verify all the > clients are able to access the cluster. > > > > On Fri, Apr 7, 2017 at 11:47 AM, TYLin <wooertim@xxxxxxxxx> wrote: >> Hi all, >> >> We’re trying to stop and then restart our ceph cluster. Our steps are as following: >> >> stop cluster: >> stop mds -> stop osd -> stop mon >> >> restart cluster: >> start mon -> start osd -> start mds >> >> Our cluster will stuck in cephfs degraded and mds is replaying journal. After restart mds again, cluster status becomes HEALTH_OK. What is the correct (or recommend) steps to stop/restart cluster? >> >> Thanks, >> Tim >> _______________________________________________ >> ceph-users mailing list >> ceph-users@xxxxxxxxxxxxxx >> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
 |