Hello,
> Is it possible to configure a fallback server (serving a static
> maintenance page) for a director with some backend
> servers in case all backend servers are down?
I had the same need some time ago, and solved it by simply switching
backends when the main ones are in an "unhealthy" state:
director cluster round-robin {
{ .backend = {
...
.probe = { # required to let req.backend.healthy work
...
}
}
}
...
}
backend sorryserver {
...
}
sub vcl_recv {
set req.backend = cluster;
if (!req.backend.healthy) {
set req.backend = sorryserver;
pass;
}
}
I hope this helps !
Marc
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