Upgrade failover pair from 3.0.3 to 3.0.4
George C. Kaplan
gckaplan at ack.berkeley.edu
Thu Aug 3 22:35:28 UTC 2006
I'm getting ready to upgrade our DHCP servers (which run failover) from
3.0.3 to 3.0.4. In the past, we've done upgrades one at a time to
minimize service distruptions. But I don't think that's possible in
this case, since 3.0.4 adds the 'atsfp' parameter to the leases file.
I think the best way to do this upgrade would be something like this:
1: Shut down both DHCP daemons
2: Install dhcpd version 3.0.4 on the primary. (I'll have a binary
package, so this'll be quick).
3: Add 'atsfp' to the leases file, as per the RELNOTES.
4: Start the upgraded primary in PARTNER-DOWN mode.
5: Install the 3.0.4 software on the secondary.
6: Add 'atsfp' to the secondary leases file.
7: start the upgraded secondary.
A slightly simpler (and maybe better, in terms of making sure the lease
databases get synchronized properly) variation:
6: Delete the secondary leases file.
Does this seem reasonable? Any other suggestions?
George C. Kaplan gckaplan at ack.berkeley.edu
IST - Infrastructure Services 510-643-0496
University of California at Berkeley
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