18 Sep
2008
18 Sep
'08
3:41 a.m.
Yoo Chan Jeon schrieb:
Hi,
I just start to use the Openser as the presence server.
I tested with the eyebeam. The server saved the presentity information
to the MySQL server.
It worked well.
I have questions.
I would like to setup two presence servers. One is active, and the other
is stand-bye.
If the active is down, the client sends a message to the stand-bye.
How does the presence server know that it is active or stand-bye?
How do I set it up?
How do I replicate the database between servers?
If the active is down, how do I make it up running again?
You have to decide if it is hot-standby or cold standby. Mostly
cold-standby is used. That means only one SIP proxy is running. The SIP
proxy is using a virtual IP address. If the proxy fails (or the hardware
fails) the standby server will detect this, will configure the virtual
interface and start the SIP proxy. Take a look at "heartbeat" and
"ultramonkey".
If you are using hat standby, you configure the "fallback2db" option and
either
- use a single database
- use 2 databases with master-master replication
- use a mysql cluster
regards
klaus