How can I remove the 2nd MDS:
# ceph mds dump
dumped mdsmap epoch 72
epoch 72
flags 0
created 2015-02-24 15:55:10.631958
modified 2015-02-24 17:58:49.400841
tableserver 0
root 0
session_timeout 60
session_autoclose 300
max_file_size 1099511627776
last_failure 62
last_failure_osd_epoch 1656
compat compat={},rocompat={},incompat={1=base v0.20,2=client writeable
ranges,3=default file layouts on dirs,4=dir inode in separate
object,5=mds uses versioned encoding,6=dirfrag is stored in omap,8=no
anchor table}
max_mds 1
in 0
up {0=23376}
failed
stopped
data_pools 7,8
metadata_pool 6
inline_data disabled
23376: 192.168.0.1:6927/713332 'z-srv-m-cph01' mds.0.9 up:active seq 7
23380: 192.168.0.1:6814/713728 '192.168.0.1' mds.-1.0 up:standby seq 2
# ceph mds rm mds.-1.0
Invalid command: mds.-1.0 doesn't represent an int
mds rm <int[0-]> <name (type.id)> : remove nonactive mds
Error EINVAL: invalid command
Any clue?
Thanks
Gian
On 24/02/2015 09:58, ceph-users wrote:
Hi all,
I've set up a ceph cluster using this playbook:
https://github.com/ceph/ceph-ansible
I've configured in my hosts list
[mdss]
hostname1
hostname2
....
I now need to remove this MDS from the cluster.
The only document I found is this:
http://www.sebastien-han.fr/blog/2012/07/04/remove-a-mds-server-from-a-ceph-cluster/
# service ceph -a stop mds
=== mds.z-srv-m-cph02 ===
Stopping Ceph mds.z-srv-m-cph02 on z-srv-m-cph02...done
=== mds.r-srv-m-cph02 ===
Stopping Ceph mds.r-srv-m-cph02 on r-srv-m-cph02...done
=== mds.r-srv-m-cph01 ===
Stopping Ceph mds.r-srv-m-cph01 on r-srv-m-cph01...done
=== mds.0 ===
Stopping Ceph mds.0 on zrh-srv-m-cph01...done
=== mds.192.168.0.1 ===
Stopping Ceph mds.192.168.0.1 on z-srv-m-cph01...done
=== mds.z-srv-m-cph01 ===
Stopping Ceph mds.z-srv-m-cph01 on z-srv-m-cph01...done
[root@z-srv-m-cph01 ceph]# ceph mds stat
e1: 0/0/0 up
1. question: why the MDS are not stopped?
2. When I try to remove them:
# ceph mds rm mds.z-srv-m-cph01 z-srv-m-cph01
Invalid command: mds.z-srv-m-cph01 doesn't represent an int
mds rm <int[0-]> <name (type.id)> : remove nonactive mds
Error EINVAL: invalid command
The ansible playbook created me a conf like this in ceph.conf:
[mds]
[mds.z-srv-m-cph01]
host = z-srv-m-cph01
Can someone please help on this or at least give some hints?
Thank you very much
Gian
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