roberto.fastec at gmail
Jul 31, 2010, 11:02 AM
Post #1 of 1
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"become-primary-on node-name" in a manual primary/secondary fail over environment
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One kind clarification:
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|become-primary-on /|node-name|/|
Sets on which node the device should be promoted to primary role by
the init script. The /|node-name|/ might either be a host name or
the key word |both|. When this option is not set the devices stay in
secondary role on both nodes. Usually one delegates the role
assignment to a cluster manager (e.g. heartbeat).
Let say I need to configure |become-primary-on| because my environment
is cluster manager free. So I set the two drbd.conf with|
||become-primary-on PC1/||/|
Obviously there is not any setting to allow two primaries.
*
Let say that one day the fail over happen.*
PC1 (the drbd primary) fails. For the time needed to fix PC1 it will
work PC2 instead and to do this, obviously, somebody manually sets
drbdadm primary on the PC2.
Well:
what happen if PC1 is restored and turned on and they (or me) forget to
set PC2's drbd to secondary?
Nothing happen?
Some error message happen?
Warning or error is logged and Sync starts automatically? And later it
will be my business to swap the primary role...
I suppose the correct answer is the third one, but confirmations and
(expecially) WARNINGS are welcome.
Thank you
Robert
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