Strategies for splitting load across varnish instances? And avoiding single-point-of-failure?

[John Norman]

Hey, folks, I just want to thank for this great thread -- I think it
would be well worth breaking it up into Q/A for the FAQ.

We're still a bit undecided as to how we're going to configure our
systems, but we feel like we have options now.

On Sun, Jan 17, 2010 at 4:10 PM, Ross Brown <ross at trademe.co.nz> wrote:
> I hadn't used varnishadm before. Looks useful.
>
> Thanks!
>
> -----Original Message-----
> From: phk at critter.freebsd.dk [mailto:phk at critter.freebsd.dk] On Behalf Of Poul-Henning Kamp
> Sent: Monday, 18 January 2010 9:38 a.m.
> To: Ross Brown
> Cc: varnish-misc at projects.linpro.no
> Subject: Re: Strategies for splitting load across varnish instances? And avoiding single-point-of-failure?
>
> In message <1FF67D7369ED1A45832180C7C1109BCA13E23E700B at tmmail0.trademe.local>,
> Ross Brown writes:
>>> So it is possible to start your Varnish with one VCL program, and have
>>> a small script change to another one some minutes later.
>>
>>What would this small script look like?=20
>
>        sleep 600
>        varnishadm vcl.load real_thing "/usr/local/etc/varnish/real.vcl"
>        varnishadm vcl.use real_thing
>
> --
> 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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