[ClusterLabs] resource start after network reconnected

[Strahil Nikolov]

 You can also use this 3rd node to provide iSCSI and then the SBD will be disk-full :D . The good thing about this type of setup is that you do won't need to put location constraints for the 3rd node.


Also, check the ping resource -> you can set it up to "kick-out" all resources on failure of ping to a specific ip (for example the gateway). Once the network is restored, the node automatically becomes eligible to host the resources.


Also consider more advanced resource agents like ocf:heartbeat:mysql to control your mysql/mariadb database and also a replication between a primary and secondary (a.k.a master-slave ) replication.


Best Regards,
Strahil Nikolov
     В петък, 19 ноември 2021 г., 21:46:22 Гринуич+2, john tillman <johnt at panix.com> написа:  
 
 > On Fri, Nov 19, 2021 at 11:26:01AM -0500, john tillman wrote:
>> Anyone have any other ideas for a configuration setting that will
>> effectively do whatever 'pcs resource refresh' is doing when quorum is
>> restored?
>
> Since you have three nodes you may want to use the third node as QDevice
> instead:
>
> https://documentation.suse.com/sle-ha/15-SP1/html/SLE-HA-all/cha-ha-qdevice.html
>
> After that SBD can be configured in diskless mode to reset the node that
> loses quorum:
>
> https://documentation.suse.com/sle-ha/15-SP1/html/SLE-HA-all/cha-ha-storage-protect.html#sec-ha-storage-protect-diskless-sbd
>

Thank you.  I'll look into using the Qdevice in the next release.  For
now, I just have the three nodes with "vanilla" cluster packages.

> --
> Valentin
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