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 <cobanser...@gmail.com> 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 <wooer...@gmail.com> 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@lists.ceph.com
>> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com

_______________________________________________
ceph-users mailing list
ceph-users@lists.ceph.com
http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com

Reply via email to