Hello,

We’ve setup a three node cluster with DRBD 9.2.0 where all three nodes are 
primary and UpToDate.

This setup is working fine until we reboot one machine. After the machine comes 
up again, it won’t reconnect.
It’s state remain in „Outdated“ while it tries to connect to the other hosts 
(which are still both primary).

It does not matter what drbdadm command we execute. The state won’t change.
drbdadm up <resource>, drbdadm connect <resource> or drbdadm --discard-my-data 
connect <resource>

The only thing which works as workaround is putting one of the other two 
primarys to secondary and then disconnect and reconnect them. After this the 
rebooted host will connect and start syncing.
But in a real world scenario this is not practicable.

What's the right way after node failure in a tripple primary setup?

Thanks!







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