<div dir="ltr">What does "stop working" mean? Does the vcl fail to compile? do you receive 503s? does it open a portal to an ancient dimension filled with unspoken nightmares? Help us help you.</div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div>-- <br></div>Guillaume Quintard<br></div></div></div>
<br><div class="gmail_quote">On Fri, Sep 23, 2016 at 1:52 PM, Drew, AJ <span dir="ltr"><<a href="mailto:Drew.AJ@principal.com" target="_blank">Drew.AJ@principal.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
<font face="Courier New" size="2"><span style="font-size:10pt">
<div>Hello,</div>
<div> </div>
<div>We are trying to upgrade to Varnish 4.1 from Varnish 3.0.5.</div>
<div> </div>
<div>Most things are working fine, but a big problem we are running into is that we have multiple backends. We switch backends based on URLs. This was working fine in Varnish 3, but when we switched over to Varnish 4, it stopped working.</div>
<div><font face="Calibri" size="2"><span style="font-size:11pt"> </span></font></div>
<div>I have tried many variations of the URLs, and even simplified the directors so that they only contain one backend (in my tests) so that I could switch from trying the backend directly to trying the director.</div>
<div> </div>
<div>Using either of the options does not seem to matter.</div>
<div> </div>
<div>Has anyone else run into this problem?</div>
<div> </div>
<div>Here are the sections of my VCL that contain the backends / director definitions and the if statements to switch. I have also left in the different options (lines) I have used to come up with different combinations for testing.</div>
<div> </div>
<div>probe B_probe {</div>
<div> .request =</div>
<div> "GET /zzzzzz/status.php HTTP/1.1"</div>
<div> "HOST: <a href="http://xxxxxx.example.com" target="_blank">xxxxxx.example.com</a>"</div>
<div> "Connection: close";</div>
<div> .timeout = 0.3 s;</div>
<div> .window = 8;</div>
<div> .threshold = 7;</div>
<div>}</div>
<div> </div>
<div>backend B_backend1 {</div>
<div> .host = "162.131.196.220";</div>
<div> .port = "8080";</div>
<div> .probe = B_probe;</div>
<div>}</div>
<div> </div>
<div>backend syscheck {</div>
<div># .host = "localhost";</div>
<div> .host = "127.0.0.1";</div>
<div> .port = "8081";</div>
<div>}</div>
<div> </div>
<div>backend searchBackend {</div>
<div> .host = "<a href="http://rp.www.example.com" target="_blank">rp.www.example.com</a>";</div>
<div> .port = "80";</div>
<div>}</div>
<div> </div>
<div>backend providerBackend {</div>
<div> .host = "172.23.82.28";</div>
<div> .port = "80";</div>
<div>}</div>
<div> </div>
<div>sub vcl_init {</div>
<div> new examplehosts = directors.round_robin();</div>
<div> examplehosts.add_backend(B_<wbr>backend1);</div>
<div> </div>
<div> new examplesyscheck = directors.round_robin();</div>
<div> examplesyscheck.add_backend(<wbr>syscheck);</div>
<div>}</div>
<div> </div>
<div> </div>
<div> </div>
<div> </div>
<div>sub vcl_recv {</div>
<div> </div>
<div># set req.backend_hint = examplehosts.backend();</div>
<div> set req.backend_hint = B_backend1;</div>
<div> </div>
<div> if (req.url ~ "^/syscheck/.*$") {</div>
<div># if (req.url ~ "^/syscheck/*") {</div>
<div># if (req.url ~ "^/syscheck/") {</div>
<div> set req.backend_hint = syscheck;</div>
<div># set req.backend_hint = examplesyscheck.backend();</div>
<div> return(pass);</div>
<div> }</div>
<div> </div>
<div> # Add simple health check for upstream load balancers</div>
<div> if (req.url ~ "^/health-check") {</div>
<div> return( synth(200, "UP"));</div>
<div> }</div>
<div>...</div>
<div><font face="Calibri" size="2"><span style="font-size:11pt"> </span></font></div>
<div><font face="Calibri" size="2"><span style="font-size:11pt"> </span></font></div>
<div>Thanks!<br>
<br>
A J Drew</div>
<div> </div>
<div><font face="Calibri" size="2"><span style="font-size:11pt"> </span></font></div>
</span></font>
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