Just to mention that ucarp can be a very basic alternative to corosync/pacemaker to manage the virtual ip. A simple app, but usually keeps working...
Cheers, Daniel On 06/06/16 02:21, Fred Posner wrote: > 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 <mailto: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 <mailto:chabert.loic...@gmail.com> >> To: sr-users@lists.sip-router.org <mailto: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 >> <mailto: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 >> <mailto: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 <mailto: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 <mailto: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 <mailto: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 -- Daniel-Constantin Mierla http://www.asipto.com - http://www.kamailio.org http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
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