We are in the process of upgrading the AFS servers to focal. As
explained by auristor (extracted from IRC below) we need 3 servers to
actually perform HA with the ubik protocol:
the ubik quorum is defined by the list of voting primary ip addresses
as specified in the ubik service's CellServDB file. The server with
the lowest ip address gets 1.5 votes and the others 1 vote. To win
election requires greater than 50% of the votes. In a two server
configuration there are a total of 2.5 votes to cast. 1.5 > 2.5/2 so
afsdb02.openstack.org always wins regardless of what
afsdb01.openstack.org says. And afsb01.openstack.org can never win
because 1 < 2.5/2. by adding a third ubik server to the quorum, the
total votes cast are 3.5 and it always requires the vote of two
servers to elect a winner ... if afsdb03 is added with the highest
ip address, then either afsdb01 or afsdb02 can be elected
Add a third server which is a focal host and related configuration.
Change-Id: I59e562dd56d6cbabd2560e4205b3bd36045d48c2
3f1d67b99f