Hello, pacemaker users and developers.
First, many thanks to clusterlabs.org for their software, Pacemaker helps us
very much!
I am testing cluster configuration based on Pacemaker+CMAN. I configured
fencing as described in Pacemker documentation about CMAN based clusters and
it works.
May be I misunderstood something, but I can't acknowledge nodes fencing
manually.
I use fence_ipmilan as device and when I plug out power cable from server
stonith fails. I expected this, of course, but I don't know how to
acknowledge manual fencing.
When I try stonith_admin -C node_name, it does nothing.
I see this in logs:
May 17 11:46:52 NODE1 stonith-ng[5434]: notice: stonith_manual_ack: Injecting
manual confirmation that NODE2 is safely off/down
May 17 11:46:52 NODE1 stonith-ng[5434]: notice: log_operation: Operation
'off' [0] (call 2 from stonith_admin.10959) for host 'NODE2' with device
'manual_ack' returned: 0 (OK)
May 17 11:46:52 NODE1 stonith-ng[5434]: error: crm_abort: do_local_reply:
Triggered assert at main.c:241 : client_obj->request_id
May 17 11:46:52 NODE1 stonith-ng[5434]: error: crm_abort: crm_ipcs_sendv:
Triggered assert at ipc.c:575 : header->qb.id != 0
May 17 11:47:35 NODE1 stonith_admin[11162]: notice: crm_log_args: Invoked:
stonith_admin -C NODE2
May 17 11:47:35 NODE1 stonith-ng[5434]: notice: merge_duplicates: Merging
stonith action off for node NODE2 originating from client
stonith_admin.11162.b42172b1 with identical request from
stonith_admin.10959@NODE1.f2048550 (0s)
May 17 11:47:35 NODE1 stonith-ng[5434]: notice: stonith_manual_ack: Injecting
manual confirmation that NODE2 is safely off/down
May 17 11:47:35 NODE1 stonith-ng[5434]: notice: log_operation: Operation
'off' [0] (call 2 from stonith_admin.11162) for host 'NODE2' with device
'manual_ack' returned: 0 (OK)
May 17 11:47:35 NODE1 stonith-ng[5434]: error: crm_abort: do_local_reply:
Triggered assert at main.c:241 : client_obj->request_id
May 17 11:47:35 NODE1 stonith-ng[5434]: error: crm_abort: crm_ipcs_sendv:
Triggered assert at ipc.c:575 : header->qb.id != 0
Nothing happened after stonith_admin -C.
Fenced still trying to fence_pcmk, and I see lots of "Timer expired" from
stonith-ng, and failed fence_ipmilan operations.
Yes, I can do fence_ack_manual on cman-master node, and then cleanup node
state with cibadmin, but it is very sloooow way.
If I lost many servers in cluster, for example, lost power in one rack with two
or more servers, I need a way to running again services on remaining nodes as
quickly as possible.
I think fencing manual acknowledgement must be fast and simple and I suppose
that stonith_admin --confirm have to do that.
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