Maintenance message

Poul-Henning Kamp phk at
Wed Feb 10 11:00:22 CET 2010

In message <2CAA2D26-7B56-4402-88E1-559361135F33 at>, Brad Schick writes
>I have a varnish server working well, but I'd like to have a standby
>server that does nothing but server up "Sorry we are preforming
>maintenance". My thought was to write VCL code to check the health
>of the director, and if that was bad use a different server (something
>like the example below). But that doesn't work. Any suggestions?

Actually, it just takes a bit of a detour:

	sub vcl_recv {
		set req.backend = cluster;
		if (!req.backend.healthy) {
			set req.backend = maint;

Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.

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