[ClusterLabs] Can a two node cluster start resources if only one node is booted?

[john tillman]

>
> That is really not a pacemaker problem and is better suited for general
> systemd troubleshooting resource. But as you have been already
> requested, show at least "systemctl status pacemaker.service" and
> "systemctl status drbd.service" when pacemaker does not start.
> _______________________________________________
> Manage your subscription:
> https://lists.clusterlabs.org/mailman/listinfo/users
>
> ClusterLabs home: https://www.clusterlabs.org/
>
>

I agree this is not a pacemaker problem.  Thank you for leading me to this
conclusion.

To satisfy any lingering curiosit, here is the output from systemctl
status pacemaker.service with only 1 node booted:
● pacemaker.service - Pacemaker High Availability Cluster Manager
   Loaded: loaded (/usr/lib/systemd/system/pacemaker.service; enabled;
vendor preset: disabled)
   Active: inactive (dead)
     Docs: man:pacemakerd
           https://clusterlabs.org/pacemaker/doc/en-US/Pacemaker/2.0/html-single/Pacemaker_Explained/index.html

And from systemctl status drbd.service with only 1 node booted:
● drbd.service - DRBD -- please disable. Unless you are NOT using a
cluster manager.
   Loaded: loaded (/usr/lib/systemd/system/drbd.service; enabled; vendor
preset: disabled)
   Active: activating (start) since Mon 2022-04-18 13:10:54 UTC; 4min 38s ago
 Main PID: 1857 (drbd)
    Tasks: 3 (limit: 23672)
   Memory: 3.2M
   CGroup: /system.slice/drbd.service
           ├─1857 /bin/bash /lib/drbd/drbd start
           ├─2045 drbdadm wait-con-int
           └─2049 drbdsetup wait-connect-resource TESTData

Apr 18 13:10:54 test00 systemd[1]: Starting DRBD -- please disable. Unless
you are NOT using a cluster manager....
Apr 18 13:10:56 test00 drbd[1857]: Starting DRBD resources:
/lib/drbd/drbd: line 148: /var/lib/linstor/loop_device_mapping: No such
file or directory
Apr 18 13:10:56 test00 drbd[1857]: [
Apr 18 13:10:56 test00 drbd[1857]:      create res: TESTData
Apr 18 13:10:56 test00 drbd[1857]:    prepare disk: TESTData
Apr 18 13:10:57 test00 drbd[1857]:     prepare net: TESTData
Apr 18 13:10:57 test00 drbd[1857]:     prepare net: TESTData
Apr 18 13:10:58 test00 drbd[1857]:     adjust disk: TESTData
Apr 18 13:10:58 test00 drbd[1857]: attempt to connect: TESTData
Apr 18 13:10:58 test00 drbd[1857]: ]

DRBD is clearly not "active" but "activating" and holding up the start of
pacemaker as pointed out earlier.

I shall look more closely at drbd.  Its behavior with pacemaker is
interesting but that is not for this list.  Thank you all for the
suggestions, explanations, and patience.

Regards,
John