What's wrong with this vcl config for varnish-cache as load balancer?
- by dabito
I have the current configurations active on my default.vcl varnish file on the machine that balances the load for other two machines (the other two machines also have varnish active).
My intention is to have this server do only the load balancing and the other machines do the processing and also their own caching.
My problem is that even with the config testing (not even a stress test or anything, just a few requests a minute) I get the guru meditation error and have to restart varnish.
This is the default.vcl for the load balancing server:
backend vader {
.host = "app1.server.com";
.probe = {
.url = "/";
.interval = 10s;
.timeout = 4s;
.window = 5;
.threshold = 3;
}
}
backend malgus {
.host = "app2.server.com";
.probe = {
.url = "/";
.interval = 10s;
.timeout = 4s;
.window = 5;
.threshold = 3;
}
}
director dooku round-robin {
{
.backend = vader;
}
{
.backend = malgus;
}
}
sub vcl_recv {
if (req.http.host ~ "^balancer.server.com$") {
set req.backend = dooku;
}
}
Am I doing something wrong or missing something?
EDIT:
This is varnishlog's output:
0 CLI - Rd ping
0 CLI - Wr 200 19 PONG 1345839995 1.0
0 CLI - Rd ping
0 CLI - Wr 200 19 PONG 1345839998 1.0
0 CLI - Rd ping
0 CLI - Wr 200 19 PONG 1345840001 1.0
0 Backend_health - malgus Still sick 4--X--- 0 3 5 0.000000 3.846876
0 Backend_health - vader Still sick 4--X--- 0 3 5 0.000000 3.839194
0 CLI - Rd ping
0 CLI - Wr 200 19 PONG 1345840004 1.0
14 SessionOpen c 10.150.7.151 38272 :80
14 ReqStart c 10.150.7.151 38272 458200540
14 RxRequest c GET
14 RxURL c /
14 RxProtocol c HTTP/1.1
14 RxHeader c Host: dooku-dev.excelsior.com
14 RxHeader c Connection: keep-alive
14 RxHeader c User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/536.11 (KHTML, like Gecko) Chrome/20.0.1132.47 Safari/536.11
14 RxHeader c Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
14 RxHeader c Accept-Encoding: gzip,deflate,sdch
14 RxHeader c Accept-Language: en-US,en;q=0.8,es-419;q=0.6,es;q=0.4
14 RxHeader c Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3
14 RxHeader c Cookie: SESSa87d6c6da0c61037a9169122dc5e4a19=HR_0Srhgc-uDArT3aJFzOBy31FtzneTXg38byr1eGMU; __atuvc=4%7C33
14 VCL_call c recv pass
14 VCL_call c hash
14 Hash c /
14 Hash c dooku-dev.excelsior.com
14 VCL_return c hash
14 VCL_call c pass pass
14 FetchError c no backend connection
14 VCL_call c error deliver
14 VCL_call c deliver deliver
14 TxProtocol c HTTP/1.1
14 TxStatus c 503
14 TxResponse c Service Unavailable
14 TxHeader c Server: Varnish
14 TxHeader c Content-Type: text/html; charset=utf-8
14 TxHeader c Retry-After: 5
14 TxHeader c Content-Length: 418
14 TxHeader c Accept-Ranges: bytes
14 TxHeader c Date: Fri, 24 Aug 2012 20:26:44 GMT
14 TxHeader c X-Varnish: 458200540
14 TxHeader c Age: 0
14 TxHeader c Via: 1.1 varnish
14 TxHeader c Connection: close
14 Length c 418
14 ReqEnd c 458200540 1345840004.916415691 1345840004.965190172 0.020933390 0.048741817 0.000032663
14 SessionClose c error
14 StatSess c 10.150.7.151 38272 0 1 1 0 1 0 256 418
14 SessionOpen c 10.150.7.151 38273 :80
14 ReqStart c 10.150.7.151 38273 458200541
14 RxRequest c GET
14 RxURL c /favicon.ico
14 RxProtocol c HTTP/1.1
14 RxHeader c Host: dooku-dev.excelsior.com
14 RxHeader c Connection: keep-alive
14 RxHeader c Accept: */*
14 RxHeader c User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/536.11 (KHTML, like Gecko) Chrome/20.0.1132.47 Safari/536.11
14 RxHeader c Accept-Encoding: gzip,deflate,sdch
14 RxHeader c Accept-Language: en-US,en;q=0.8,es-419;q=0.6,es;q=0.4
14 RxHeader c Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3
14 RxHeader c Cookie: SESSa87d6c6da0c61037a9169122dc5e4a19=HR_0Srhgc-uDArT3aJFzOBy31FtzneTXg38byr1eGMU; __atuvc=4%7C33
14 VCL_call c recv pass
14 VCL_call c hash
14 Hash c /favicon.ico
14 Hash c dooku-dev.excelsior.com
14 VCL_return c hash
14 VCL_call c pass pass
14 FetchError c no backend connection
14 VCL_call c error deliver
14 VCL_call c deliver deliver
14 TxProtocol c HTTP/1.1
14 TxStatus c 503
14 TxResponse c Service Unavailable
14 TxHeader c Server: Varnish
14 TxHeader c Content-Type: text/html; charset=utf-8
14 TxHeader c Retry-After: 5
14 TxHeader c Content-Length: 418
14 TxHeader c Accept-Ranges: bytes
14 TxHeader c Date: Fri, 24 Aug 2012 20:26:45 GMT
14 TxHeader c X-Varnish: 458200541
14 TxHeader c Age: 0
14 TxHeader c Via: 1.1 varnish
14 TxHeader c Connection: close
14 Length c 418
14 ReqEnd c 458200541 1345840005.226389885 1345840005.226457834 0.000026941 0.000043154 0.000024796
14 SessionClose c error
14 StatSess c 10.150.7.151 38273 0 1 1 0 1 0 256 418
