The ocp3 cluster is reachable/available via the vpn, so any proxy can
reach it.
The ocp4 cluster is (at least for now) only reachable/available from the
iad2 proxies (proxy01/proxy10).
There's a firefox bug that causes it to reuse h2 connections, and in
some cases try and request something of a non iad2 proxy that it can't
reach. To work around this in those cases we need to send a 421 back to
the client so it doesn't do that.
This moves that logic into the template so all ocp4: true hosts do this
by default. Also, we default the balancer nodes so we only have to
change them in one place if we remove/add a compute node.
Finally, we mark all the ocp3 apps with 'ocp4: false' so we know what
they are and can move them more easily.
Signed-off-by: Kevin Fenzi <kevin@scrye.com>
debuginfod can take O(60s) to run certain webapi queries, so the httpd
mod_proxy default timeouts are too short. Introduce an ansible
variable "proxyopts", expanded into the httpd ProxyPass and
ProxyPassReverse configuration lines. Default to "", but set it
with pretty generous limits for debuginfod only.
