Is there a way to tell nginx to use a specific address when talking to
an upstream?
I would like to do something like:
upstream bla {
server [D0C::1234]:8080 src [D0C::beaf];
server 1.2.3.4:8080 src 1.2.3.5;
server upstream.example.tld src site.example.tld;
}
My system has multiple local addresses and just one of them should be
used to contact the given upstream.
If host-name is provided the source address should be chosen of the
same address family as the upstream address (so it’s not necessary to
explicitly state IP addresses and duplicate server entries for IPv4
and IPv6).
It’s possible to do it via “src” attribute of routes though it would be
more clean to do it on the application side.
e.g.
ip route add D0C::1234/128 src D0C::beaf ethX
ip route add 1.2.3.4/32 src 1.2.3.5
Bruno
On Fri, May 17, 2013 at 02:57:00PM +0200, Bruno Prmont wrote:
It’s possible to do it via “src” attribute of routes though it would be
more clean to do it on the application side.
e.g.
ip route add D0C::1234/128 src D0C::beaf ethX
ip route add 1.2.3.4/32 src 1.2.3.5
http://nginx.org/r/proxy_bind
This is the only option so far. Per-server per-upstream source address
selection isn’t currently possible.
On Fri, 17 May 2013 17:17:20 +0400 Ruslan E. wrote:
}
selection isn’t currently possible.
How does that one behave with regard to IPv4 versus IPv6?
The documentation says “address” which I guess can be either IPv4 or
IPv6 but not both so the right one gets choosen depending on the
destination address format? Or can I write it twice, once with IPv4
addr, once with IPv6 addr (ideally once with a hostname that gets
resolved as appropriate).
As it can be set on per-server or per-location level it would be
sufficient for me.
Bruno