<div dir="ltr">I see very few <i>Error 503 Backend fetch failed</i>, errors during the day. But when I follow the logs, there are hundreds of errors. <div>Where exactly do I need to look at Apache?<br></div></div><div class="gmail_extra"><br><div class="gmail_quote">2016-11-21 19:53 GMT+03:00 Geoff Simmons <span dir="ltr"><<a href="mailto:geoff@uplex.de" target="_blank">geoff@uplex.de</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">-----BEGIN PGP SIGNED MESSAGE-----<br>
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<span class=""><br>
On 11/21/2016 05:25 PM, Ayberk Kimsesiz wrote:<br>
><br>
> I'm trying to solve this problem for a long time. I reset the<br>
> default.vcl settings, but it did not work. What is your<br>
> suggestion?<br>
><br>
</span>> * << BeReq >> 1277958 - FetchError http first read<br>
<span class="">> error: EOF - BackendClose 132 boot.default - Timestamp<br>
> Beresp: 1479744811.501441 111.842947 108.842130<br>
<br>
</span>You're misunderstanding the problem, it has nothing to do Varnish. And<br>
there's nothing Varnish can do about it, no matter what you do with<br>
the settings.<br>
<br>
Your backend is not responding. In this case, it took over 108<br>
seconds. Varnish has to time out and give up, eventually.<br>
<br>
Your backend named "boot.default", presumably an Apache or nginx or<br>
Tomcat or something like that, is the cause of the problem here.<br>
*That* is what you have to fix, not Varnish. Find out why it's taking<br>
so long, and fix that; or, as the case may be, yell at the application<br>
developers until they get it fixed.<br>
<br>
<br>
HTH,<br>
Geoff<br>
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</blockquote></div><br></div>