How many copies of the mupdate master should run?

[Lenny]

I've seen this very odd problem as well. Not really sure if it's causing
anything "bad" to happen or not.

We're running a murder environment with virtual domains (6 frontends, 3
backends, 1 mupdate master).

-Lenny

Gary Mills wrote:
> On our mupdate master server, mupdate is defined in cyrus.conf with
> `prefork=1'.  However, two of them are running, both children of
> master...
> 
>        UID   PID  PPID   C    STIME TTY         TIME CMD
>      cyrus  1594   483   0   Apr 15 ?           0:00 mupdate -C /etc/mupdate/imapd.conf -m
>      cyrus  1596   483   0   Apr 15 ?          22:18 mupdate -C /etc/mupdate/imapd.conf -m
> 
> The second one seems to be doing all the work.  What's the first one for?
> Both have opens on the unix-domain socket.  Only the second one has TCP
> connections.
> 
> In fact, there were three started, but one terminated...
> 
>   Apr 15 22:09:16 castor mupdate[1595]: [ID 166678 local6.error] bind: /imap/mupdate/conf/socket/mupdate.target: Address already in use
>   Apr 15 22:09:16 castor mupdate[1595]: [ID 702911 local6.error] bind failed
>   Apr 15 22:09:16 castor master[483]: [ID 684980 local6.warning] service mupdate pid 1595 in READY state: terminated abnormally
> 
> What's going on here?
>