14 Dec
2021
14 Dec
'21
8:03 a.m.
Rhys,
Seems you're looking into something called "anycast". If it's the case,
have you checked
https://github.com/kamailio/kamailio/blob/master/misc/examples/mixed/kamail…
?
But overall you are correct, myself is not enough clever to get if
interface is active or not.
Regards,
Igor
On 14.12.2021 05:50, Rhys Hanrahan wrote:
Hi Everyone,
I have Kamailio acting as a registrar, using DMQ to replicate usrloc
between nodes. I’m relaying INVITEs to the home registrar, but
skipping this if (uri == myself) is true.
In my lab I just setup my SBCs in an active/active mode, similar to
the link below. So I have 2x VIPs and both SBCs listen on both, but
the first VIP is only master on SBC01 and the second VIP is only
master on SBC02.
https://docs.nginx.com/nginx/admin-guide/high-availability/ha-keepalived-no…
<https://docs.nginx.com/nginx/admin-guide/high-availability/ha-keepalived-nodes/>
My issue is that now “myself” will always return true even if the
virtual IP is actually not active on this node at the moment, so the
invite is never relayed properly if it’s on another node. I guess
“myself” is just blindly looking at the list of Ips that are
configured with either listen= or alias= and doesn’t care if the IP
actually exists on the server at the time, or not?
I am thinking I may have to ditch relying on “myself” entirely and
come up with some other way of checking for local requests, but I am
wondering if there’s a good way of approaching this? I was thinking of
perhaps triggering an add/remove of listen directives (or something)
when a failover of a VIP happens, though this seems kind of heavy
handed. Hoping there is a better way.
Has anyone else tried doing active/active Kamailio instances like this?
Thanks!
*Rhys Hanrahan* | Chief Information Officer
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