You're going to have all sorts of data concurency problems doing any of this. Think about what happens as you get failures on one box and you start using the other.. The data will change on one and not the other.. then the primary comes back up. You really need a DB failover solution and clustering is really the right way to do it.. I did this with MySQL Master/Slave replication for years. Although it works, there are still problems using the backup mysql server. Namely, you can't really be entirely sure it's accurate data. And then when the primary comes back online, you'll have CDR in the backup that isn't in the primary. All sorts of problems like that..
Now if you are just doing something simple like LCR routes, or simple lookups that are static, consider using something like dbtext instead as it doesn't need a mysql running process to operate. That's my $0.02. I'm sure there are others that used the master/slave type replication with success, but I think it's less than ideal. Just remember, it will look like a *perfect* solution for you, until you get a DB failure. -Brett On Tue, Nov 25, 2008 at 8:20 AM, Matteo D'Amato <[EMAIL PROTECTED]> wrote: > With SRV, if one box is down will it still get hit or does the DNS only > send to the one that is up? > > > > > > *From:* [EMAIL PROTECTED] [mailto: > [EMAIL PROTECTED] *On Behalf Of *Pablo Hernan Saro > *Sent:* Tuesday, November 25, 2008 8:04 AM > *To:* Krunal Patel > *Cc:* users@lists.opensips.org > *Subject:* Re: [OpenSIPS-Users] Help!! How to do failover of mysql > connection > > > > That will not work. Try DNS SRV. Take a look at this link > http://www.zytrax.com/books/dns/ch8/srv.html > Hope it helps. > > Pablo > > On Tue, Nov 25, 2008 at 2:51 AM, Krunal Patel <[EMAIL PROTECTED]> > wrote: > > Hi, > > is it fine if I use DSN resolver? > Let me explain in detail: > I setup a DSN resolver & add A record for mysql servers. > mysql A 192.168.1.5 > mysql A 192.168.1.6 > > where 192.168.1.5 & 192.168.1.6 are mysql cluster nodes. > > So mysql.somedomain.com will point to both servers. > It will do load balance & failover both. > > Please confirm that it will not create any issue. > > Thanks, > Krunal Patel > > > > On Tue, Nov 25, 2008 at 1:35 AM, Geoffrey Mina <[EMAIL PROTECTED]> > wrote: > > This problem has been solved many times. The absolute most bomb-proof > MySQL failover solution involves a combination of DRBD and Linux HA > (Heart Beat). The replication model has too many issues IMO. > > > > > > On Sun, Nov 23, 2008 at 9:10 AM, Uwe Kastens <[EMAIL PROTECTED]> wrote: > > Hi Krunal, > >> * I am having 2 MySql servers. Lets say 192.168.1.5 > >> <http://192.168.1.5> & 192.168.1.6 <http://192.168.1.6> > >> * Opensips is at 192.168.1.4 <http://192.168.1.4>. > >> * I would like to use 192.168.1.6 <http://192.168.1.6> mysql server > >> for failover. > >> * I mean to say if 192.168.1.5 <http://192.168.1.5> goes down then > >> opensips should start to use 192.168.1.6 <http://192.168.1.6> > >> mysql server. > >> > > > > I am just on my way to implement the same. At the moment I am planing a > > kind of Mysql Master - Master together with one VIP for > > Mysql-opensips-communication. So for your example you will have to > > mysql-servers. opensips is connection to lets say to 192.168.1.4 which > > points on one of your mysql-servers. You will need active-active for > > mysql since opensips will write some information in the database as well. > > > > > > I am working with mysql-5 and heartbeat-2 in mode 1. Its nearly working. > > > > BR > > > > Kiste > > > > -- > > > > kiste lat: 54.322684, lon: 10.13586 > > > > > _______________________________________________ > > Users mailing list > > Users@lists.opensips.org > > http://lists.opensips.org/cgi-bin/mailman/listinfo/users > > > > _______________________________________________ > Users mailing list > Users@lists.opensips.org > http://lists.opensips.org/cgi-bin/mailman/listinfo/users > > > > > _______________________________________________ > Users mailing list > Users@lists.opensips.org > http://lists.opensips.org/cgi-bin/mailman/listinfo/users > > > > _______________________________________________ > Users mailing list > Users@lists.opensips.org > http://lists.opensips.org/cgi-bin/mailman/listinfo/users > >
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