Le 16/04/2014 22:12, Jennings, Raymond a écrit : > I can't say with any definitive response but I have seen cases > where Varnish times out before Apache finishes the response. I see > this when there is a request that causes a heavy database > transaction on the backend. Does looking at your backend servers > provide any more details? > Well I don't think it is some sort of timeout, the `backend write error: 104 (Connection reset by peer)` error is straight forward.
Still, that's probably on the backend side. Try to check your apache log and processes through `mod_status` to make sure you're not running out of processes/threads, whatever you use. > > On Wed, Apr 16, 2014 at 8:37 AM, L Cruzero <[email protected] > <mailto:[email protected]>> wrote: > > Hi, in our varnish setup(varnish-3.0.3-1.el5) using a > loadbalanced really Healthy VIP as the only backend, we seem to be > getting intermittent 503's > > > stdout captured with varnishlog -c -m TxStatus:503 > > 35 ReqStart c 10.33.13.254 24582 1166630723 35 RxRequest c > POST 35 RxURL c > /index.php?option=com_jce&task=plugin&plugin=imgmanager&file=imgmanager&method=form&cid=20&6bc427c8a7981f4fe1f5ac65c1246b5f=cf6dd3cf1923c950586d0dd595c8e20b > > 35 RxProtocol c HTTP/1.1 > 35 RxHeader c User-Agent: BOT/0.1 (BOT for JCE) 35 RxHeader > c Content-Type: multipart/form-data; > boundary=---------------------------41184676334 35 RxHeader c > Content-Length: 5000 35 RxHeader c True-Client-IP: > 202.80.119.178 35 RxHeader c X-Akamai-CONFIG-LOG-DETAIL: true > 35 RxHeader c TE: chunked;q=1.0 35 RxHeader c Connection: > TE 35 RxHeader c Akamai-Origin-Hop: 2 35 RxHeader c Via: > 1.1 v1-akamaitech.net <http://v1-akamaitech.net>(ghost) > (AkamaiGHost), 1.1 akamai.net <http://akamai.net>(ghost) > (AkamaiGHost) 35 RxHeader c X-Forwarded-For: 202.80.119.178, > 114.4.39.206 35 RxHeader c Host: www.somedomain.com > <http://www.oregonlive.com> 35 RxHeader c Cache-Control: > max-age=120 35 RxHeader c Connection: keep-alive 35 RxHeader > c X-Forwarded-For: 23.73.180.223 35 RxHeader c Accept-Encoding: > identity 35 VCL_call c recv pass 35 VCL_call c hash 35 Hash > c > /index.php?option=com_jce&task=plugin&plugin=imgmanager&file=imgmanager&method=form&cid=20&6bc427c8a7981f4fe1f5ac65c1246b5f=cf6dd3cf1923c950586d0dd595c8e20b > > 35 Hash c www.somedomain.com <http://www.oregonlive.com> > 35 VCL_return c hash 35 VCL_call c pass pass 35 Backend > c 29 www_prod www_prod 35 FetchError c backend write error: 104 > (Connection reset by peer) 35 Backend c 42 www_prod www_prod > 35 FetchError c backend write error: 104 (Connection reset by > peer) 35 VCL_call c error deliver 35 VCL_call c deliver > deliver 35 TxProtocol c HTTP/1.1 35 TxStatus c 503 35 > TxResponse c Service Unavailable 35 TxHeader c Server: > Varnish 35 TxHeader c Content-Type: text/html; charset=utf-8 35 > TxHeader c Retry-After: 5 35 TxHeader c Content-Length: > 419 35 TxHeader c Accept-Ranges: bytes 35 TxHeader c Date: > Tue, 15 Apr 2014 19:31:22 GMT 35 TxHeader c X-Varnish: > 1166630723 35 TxHeader c Age: 0 35 TxHeader c Via: 1.1 > varnish 35 TxHeader c Connection: close 35 Length c 419 > 35 ReqEnd c 1166630723 1397590282.467632055 > 1397590282.899372101 0.033779144 0.431685925 0 > <tel:431685925%200>.0000541 > > > here is super simple pass thru NO cache config : > > > backend www_prod { .host = "cs-****.*****.*****.net"; .port = > "80"; .probe = { .url = "/"; .timeout = 5s; .interval = 1s; .window > = 5; .threshold = 2; } } > > sub vcl_recv { if (req.http.X-ADI-MISS) { # Force a cache miss set > req.hash_always_miss = true; } > > if (req.url == "/varnish-health/" || req.url ~ "^/stack-check*") { > error 200 "Varnish is responding"; set req.http.Connection = > "close"; } > > > if (req.http.host ~ "^(origin|www)") { set req.http.host = > regsub(req.http.host, "^origin\.", "www."); set req.backend = > www_prod; return(pass); > > } > > > ## we tried with and w/o these conditions intermittent 503's > persisted > > # if (req.backend.healthy) { # set req.grace = 30s; # > } else { # set req.grace = 24h; # } > > } > > > sub vcl_fetch { # set beresp.do_esi = true; set > beresp.ttl = 1m; > > # set beresp.grace = 24h; } > > > > Any helpful thoughts and or possible leads on this will be much > appreciated. > > > kind regards, > > > -LC > > > _______________________________________________ varnish-misc > mailing list [email protected] > <mailto:[email protected]> > https://www.varnish-cache.org/lists/mailman/listinfo/varnish-misc > > > > > _______________________________________________ varnish-misc > mailing list [email protected] > https://www.varnish-cache.org/lists/mailman/listinfo/varnish-misc > -- Boris Guéry mobile: +33 6 86 83 03 12 skype: borisguery pgp: 0x034C6265 _______________________________________________ varnish-misc mailing list [email protected] https://www.varnish-cache.org/lists/mailman/listinfo/varnish-misc
