If it's just 2 servers, consider as Juha said, corosync/pacemaker with drbd.
Fred Posner direct: +1 (224) 334-FRED (3733) > On Jun 5, 2016, at 5:26 PM, Moacir Ferreira <moacirferre...@hotmail.com> > wrote: > > Hi, > > Sorry... I should have mentioned before. You guys are thinking on the > standard Internet SIP calls' behavior while I am trying to use Kamailio on a > large "industrial" project. This said: > > Assuming that the end-point is "smart", the DNS method is functional but it > would take quite a while before the UA (phone) recovers from the previous > name/IP binding it has in cache; > SRV is good for a "smart" UA that, unfortunately, is not the case; > Same for the phone units as they are industrial "Help Points" and so quite > "dummy". > > While I never tested it, I thought I could use two Kamailio servers with a > mysql cluster like mariadb-galera where, for Kamailio functions, one server > would be "active" and another "passive" server. Then use keepalived for > monitoring the "active" Kamailio and starting the "passive" server if the > active Kamailio fails. Without any testing, tests that I think I should have > done before putting questions in here, my questions are: > > Suppose that I have two Kamailio servers, one "active" and another one > "passive" (not running) where the mysql databases are synchronized in between > two servers using MySQL Galera. Using keepalived I would monitor the active > Kamailio instance. Should it fails, start the "passive" Kamailio instance > using the same MySQL database that were supposed to be synchronized. Would > this new Kamailio instance be able to find a called number? Why this > question? As long as I understand, Kamailio will always challenge the UA for > authentication before making a call, so if this second server gets a call > request it would just challenge and authenticate the caller. The "key point" > would be having this new Kamailio instance aware about the called > destinations. So, delivering a MySQL database, with the latest data the > active Kamailio had, to this new Kamailio instance would be enough to allow > it find the called party? > > Anyway, can you guys comment on my "thoughts"? Is it possible? Am I missing > something? Would you suggest another approach for such scenario? > > Cheers! > Moacir > > Date: Sun, 5 Jun 2016 21:07:41 +0200 > From: chabert.loic...@gmail.com > To: sr-users@lists.sip-router.org > Subject: Re: [SR-Users] High availability > > Hello Bill, > > I have made kamailio ha using exabgp with loopbacks. > > Check https://github.com/Exa-Networks/exabgp > > With bgp, kamailio cluster can be splited on severals datacenters. > > Regards. > > Le 5 juin 2016 20:53, "Bill" <b...@novatrope.us> a écrit : > Hi Moacir > > We have only found three ways to handle failover. > 1. Change the DNS entry whenever a failure is detected. > 2. Use SRV records to display an alternate route. > 3. Use the failover mechanism in the phone itself > > 1. works, but it may take some time for your ua's to become aware of the > change > 2. never have been able to get this to work as advertised. > 3. Works pretty well depending on the phone. (We use mostly Yealink's and > they seem to handle the failover pretty well.) > > Hope this helps > > On 06/05/2016 07:41 AM, Moacir Ferreira wrote: > Hi, > > I got two questions regarding high availability: > > 1 - Should my Kamailio server fail, I would like another Kamailio > "box/server" to take over with minimum services disruption. What is the > "community" advice for such environment? > > 2 - Should my main PSTN gateway fail, what would be the best mechanism to > redirect calls to a second PSTN gateway? > > Cheers! > Moacir > > > _______________________________________________ > SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list > sr-users@lists.sip-router.org > http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users > > > _______________________________________________ > SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list > sr-users@lists.sip-router.org > http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users > > > _______________________________________________ SIP Express Router (SER) and > Kamailio (OpenSER) - sr-users mailing list sr-users@lists.sip-router.org > http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users > _______________________________________________ > SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list > sr-users@lists.sip-router.org > http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
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