[asterisk-ha-clustering] Load sharing between two asterisk servers

[Julian J. M.]

You can use DRBD for keeping a synced AstDB (/var/lib/asterisk/astdb)
between both systems. Although you'll need heartbeat for mounting the
DRBD partition when the standby machine becomes active.

Julián J. M.

On Jan 9, 2008 11:10 AM, Ricardo Carvalho <rjcarvalho at gmail.com> wrote:
> I thought that even working with realtime sip, SIP peers registration is
> kept in astDB (as running memory for asterisk), because I have a problem
> related to this - even with mysql databases synced with mysql replication,
> when my standby machine assumes production, none of my phones are known by
> the Asterisk running in the backup machine that assumes production, and so,
> I had to make a script to reboot all phones when the standby machine enters
> production so that they register with the backup server's Asterisk.
>
> Can this be done some other way? Is it DUNDI, regexten or regcontext usefull
> to avoid rebooting all phones so that they register again?
>
> Thanks in advance,
> Ricardo Carvalho.
>
>
>
>
>  On Jan 9, 2008 9:46 AM, Johansson Olle E <oej at edvina.net> wrote:
> >
> > 9 jan 2008 kl. 10.42 skrev Yehavi Bourvine +972-8-9489444:
> >
> >
> >
> >
> > > Hello,
> > >
> > >  I know this is not a pure High Availability question, but I think
> > > it is
> > > related...
> > >
> > >  I would like to do  load balancing between two Asterisk servers and
> > > allow the
> > > phones to use the other server as backup. Asterisk is installed on
> > > both
> > > systems, the users (extensions) are defined in MySQL database
> > > (realtime
> > > Asterisk); the MySQL database is replicated on both systems.
> > >
> > >  What I see is that only the server to which the phone registered
> > > knows about
> > > its location. The other server doesn't know it, and thinks that the
> > > phone is
> > > offline (although I see its current address in the MySQL record).
> > >
> > > The realtime section of SIP.CONF is as follows:
> > >
> > > rtcachefriends=yes
> > > rtsavesysname=yes
> > > rtupdate=yes
> > > rtautoclear=yes
> > > ignoreregexpire=yes
> > >
> > > I tried setting rtsavesysname=no but it didn't change the behaviour.
> > > Any idea
> > > what I am doing wrong, or how to do it?
> > >
> > > BTW, I tried to code  the dialplan to check the sysname field in
> > > MySQL; if it
> > > finds that the phone is on the other server then to direct the call
> > > to there.
> > > However, it then fails authentication (even if I set bith servers to
> > > be
> > > "insecure") :-(
> >
> > This is why we have Dundi :-) and the regexten= parameter in channel
> > drivers.
> >
> > I don't understand why you fail authentication between the servers,
> > but that's propably just
> > a configuration issue that you can solve.
> >
> > You can do a lookup in the Msyql table, since the server who receives
> > the registration will store it in the database. In newer versions of
> > Asterisk, you also have the option of storing the system name of the
> > server, so that you can redirect the call through that server out to
> > the client. With NAT, you have to send the call from the same IP
> > address in order to reach the client.
> >
> > /O
> >
> >
> >
> >
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