Failover strangeness
Greg G
ggersh at ctc.net
Tue Nov 7 21:48:01 UTC 2006
David W. Hankins wrote:
> On Thu, Nov 02, 2006 at 10:34:40AM -0500, Greg G wrote:
>
>> 4. Primary comes back up. Secondary goes to normal mode.
>> 5. Secondary continues to handle the lease.
>>
>
> This is normal, isn't it? The client in question has been given
> a server-id for its lease, and renewals always go via unicast
> the identified server.
>
> It won't change until the client loses its binding and finds a new
> one (eg reboots), but even so some clients will skip rebind and
> still manage to contact a different server.
>
>
Right. This is totally normal behavior. I was just giving the whole
trace of what happened.
>> 6. I told the primary to operate in partner-down. It went back to
>> normal mode in about 2 seconds. (This also forces a peer update.)
>>
>
> Why would you do this while the secondary was operating?
>
> I'm not sure what effects this will have upon the software. I
> honestly have never tested it. It's probably the reason you
> are getting 'no free leases'. But that's a guess.
>
> This doesn't sound like a good idea to me, anyway.
>
Well, it actually didn't matter if I did this or not. The person who
posted his "partner-down" script had said that he was running it on a
regular basis.
The No Free Leases is happening whether or not I do this.
-Greg G
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