> Am 21.07.2018 um 03:11 schrieb Michael Knill > <michael.kn...@ipcsolutions.com.au>: > > Hi Group > > I have won a reasonable size customer (90 extensions) and Im currently > testing Astlinux hot standby. > This is what I am planning to do: > • The Astlinux HS is in parallel to the primary Astlinux server with > different IP Addresses on the internal and external interface but same > subnet. Its likely that these systems will be behind a firewall using NAT. > The SIP Trunk will be registered and not IP Address based. > • The primary server periodically synchronises its config and database > to the HS server. I can basically use my standard backup and restore script > to do this > • Both servers are remotely accessible > > In the event that the primary server fails, the following is performed to > failover to the HS server: > • Add primary server IP as virtual IP on HS server e.g. ifconfig > eth1.100:1 172.30.30.1 netmask 255.255.255.0 > • Update ARP table e.g. arping -q -U -c 3 -I eth1.100 172.30.30.1 > • Register the SIP Trunk on the HS server > > My initial testing seems to work well and I cant find any issues. > > Obviously there are some caveats: > • Don't sync gui.network.conf and Asterisk SIP Trunk config files as > they are different on the HS server > • The virtual IP is not permanent. If the outage is long term, the HS > server should be converted into the primary (only a couple of files are > different) > • Unless converted into the primary, any config changes (including > dynamic ones) will need to be synced to the primary server when failed back > • Devstate will not be maintained > > Although this solution is not perfect, the ability to run up a new server in > minutes remotely is certainly a big plus. > > What do you think? Can you see any other issues? > > Regards > Michael Knill
Hi Michael, some thoughts: * It could take some time until all IP-phones re-register on the Real/Virtual server IP (depending on their config up to 10 minutes). * If you have a central PoE-switch you could simply reboot that switch to reboot all phones at once to re-register. * Think about that the provisioning then also switches. * Some phones (e.g. Yealink) also have the ability to register to a 2nd SIP-server and do a failover on their own… For automatic switching of the "Virtual IP" there are existing solutions (not in AstLinux yet): * ucarp (domain "ucarp.org" seems to be gone) => https://github.com/jedisct1/UCarp/commits/master (not very up to date :-( ) * keepalived (an older version is in Buildroot) => http://www.keepalived.org https://blog.itanddevelopment.com/simple-automatic-failover-for-asterisk-and-freepbx/ http://blog.unicsolution.com/2015/01/kamailio-high-availability-with.html Only my 2 ct. Michael http://www.mksolutions.info ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Astlinux-users mailing list Astlinux-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/astlinux-users Donations to support AstLinux are graciously accepted via PayPal to pay...@krisk.org.
