[Pacemaker] How to put delay in fence_intelmodular for one node only

[Digimer]

Excellent.

   Please note; With IPMI-only fencing, you may find that killing all 
power to the node will cause fencing to fail, as the IPMI's BMC will 
lose power as well (unless it has it's own battery, but most don't).

   If you find this, then the solution I would recommend is to get a 
pair of switched PDUs (I like the APC brand AP7900, very fast and the 
fence_apc_snmp agent is very well tested). With this, you can then setup 
STONITH levels;

http://clusterlabs.org/wiki/STONITH_Levels

   With this, if the IPMI fails, Pacemaker will move on and try fencing 
by cutting power to the lost node, providing a backup method of fencing. 
If you use stacked switches, put the PDUs on one switch and the IPMI 
interface on the other switch, and you will provide reliable fencing in 
a failed-switch state, too.

   Cheers!

On 21/06/14 12:38 PM, Gianluca Cecchi wrote:
>
> Hi Gianluca,
>
>
>        I'm not sure of the CIB XML syntax, but here is how it's done
>     using pcs:
>
>
> OK, thanks Digimer.
>
> It seems it worked this way using your suggestions
>
> [root at srvmgmt01 ~]# pcs stonith show
>   Fencing    (stonith:fence_intelmodular):    Started
>
> # pcs cluster cib stonith_separate_cfg
>
> [root at srvmgmt01 ~]# pcs -f stonith_separate_cfg stonith delete Fencing
> Attempting to stop: Fencing...Error: Unable to stop: Fencing before
> deleting (re-run with --force to force deletion)
>
> (used --force later see below perhaps I had to use stop before, but I
> thought that working on file it would have done nothing...)
>
> # pcs -f stonith_separate_cfg stonith create fence_srvmgmt01
> fence_intelmodular \
> pcmk_host_list="srvmgmt01.localdomain.local"
> pcmk_host_map="srvmgmt01.localdomain.local:5" \
> ipaddr="192.168.150.150" login="snmpv3user"
> passwd_script="/usr/local/bin/fence_pwd.sh" \
> snmp_version="3" snmp_auth_prot="SHA" snmp_sec_level="authNoPriv" \
> power_wait="15" action="reboot" delay=15 \
> op monitor interval=10m timeout="300s"
>
> # pcs -f stonith_separate_cfg stonith create fence_srvmgmt02
> fence_intelmodular \
> pcmk_host_list="srvmgmt02.localdomain.local"
> pcmk_host_map="srvmgmt02.localdomain.local:6" \
> ipaddr="192.168.150.150" login="snmpv3user"
> passwd_script="/usr/local/bin/fence_pwd.sh" \
> snmp_version="3" snmp_auth_prot="SHA" snmp_sec_level="authNoPriv" \
> power_wait="15" action="reboot" \
> op monitor interval=10m timeout="300s"
>
> [root at srvmgmt01 ~]# pcs -f stonith_separate_cfg stonith delete Fencing
> --force
> Deleting Resource - Fencing
>
> # pcs cluster cib-push stonith_separate_cfg
> CIB updated
>
> and now I have
>
> [root at srvmgmt01 ~]# crm_mon -1
> Last updated: Sat Jun 21 18:33:15 2014
> Last change: Sat Jun 21 18:31:35 2014 via cibadmin on
> srvmgmt01.localdomain.local
> Stack: cman
> Current DC: srvmgmt01.localdomain.local - partition with quorum
> Version: 1.1.10-14.el6_5.3-368c726
> 2 Nodes configured
> 5 Resources configured
>
>
> Online: [ srvmgmt01.localdomain.local srvmgmt02.localdomain.local ]
>
>   Master/Slave Set: ms_drbd_kvm-ovirtmgr [p_drbd_kvm-ovirtmgr]
>       Masters: [ srvmgmt01.localdomain.local ]
>       Slaves: [ srvmgmt02.localdomain.local ]
>   p_kvm-ovirtmgr    (ocf::heartbeat:VirtualDomain):    Started
> srvmgmt01.localdomain.local
>   fence_srvmgmt01    (stonith:fence_intelmodular):    Started
> srvmgmt02.localdomain.local
>   fence_srvmgmt02    (stonith:fence_intelmodular):    Started
> srvmgmt01.localdomain.local
>
> I'm going to test several scenarios to see behaviour is as expected.
>
> Thanks again.
>
> Gianluca
>
>
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-- 
Digimer
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