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From Antony Stone <Antony.St...@apache.open.source.it>
Subject Re: [users@httpd] Health check expressions
Date Thu, 13 Feb 2020 12:29:54 GMT
On Thursday 13 February 2020 at 13:16:19, Eric Covener wrote:

> On Wed, Feb 5, 2020 at 6:45 AM Antony Stone wrote:
> > Hi.
> > 
> > I'm using Apache as a load-balancing proxy, following
> > https://httpd.apache.org/docs/2.4/mod/mod_proxy_balancer.html and
> > https://httpd.apache.org/docs/2.4/mod/mod_proxy_hcheck.html as guides to
> > setting it up.
> > 
> > I've got it working fine when I use %{REQUEST_STATUS} in the health check
> > expression, but I'd like to use the content type of the returned header
> > for the health check.
> > 
> > Following the "expression" link from the hcheck page and looking at
> > https://httpd.apache.org/docs/2.4/expr.html I think I should be able to
> > use %{CONTENT_TYPE} but this always returns status HcFl.
> > 
> > Is there a list of what I can use in ProxyHCExpr definitions somewhere,
> > other than the two examples (request status, and body content) shown on
> > the above page?
> > 
> > Any idea how to check the content-type of the returned response?
> 
> Have you tried reading the value of the Content-Type response header
> instead of this built-in var?

No - how would I do that?

What should I use for ProxyHCExpr to achieve this?


Thanks,

Antony.

-- 
Most people are aware that the Universe is big.

 - Paul Davies, Professor of Theoretical Physics

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