State transitions and notify scripts

"Ryan O'Hara" <[email protected]>
Newsgroups gmane.linux.keepalived.devel
Message-ID <[email protected]>
A colleague of mine mentioned that notify scripts, specifically
notify_backup, is run before the transition is complete. For example,
the notify_master script is run before the VIP has been added to an
interface. I'm running some tests now and tracing the code.

Is this expected behavior? A quick glance at the code caused me to
wonder if it is just sending a netlink message to add the VIP(s) to an
interface and then returning. I should know more later today.

On a related note, I suspect changing this such that the notify_master
script is run after the VIP is up could break configuration where the
assumption is that it runs at the start of a state transition. In this
case, we'd probably need something like "notify_master_post".

Thoughts?

Ryan


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