-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 On 05/13/2016 09:48 AM, Garau Simone wrote: > > I still have an issue I can’t understand: I get some random 503 > from the backend where Varnish isn’t caching. After a couple of > refresh of the page is properly served. > > The Apache logs shows no activity when Varnish sends a 503, like > Varnish doesn’t send the request.. Or why isn’t Apache logging?
> * << BeReq >> 1115881 [..] > - Timestamp Bereq: 1463124821.994727 0.000229 0.000229 - > FetchError http first read error: EOF - BackendClose 46 > boot.default - Timestamp Beresp: 1463124826.994768 5.000270 > 5.000041 FetchError is the critical log entry for a 503 error, and in this case there was a failure reading the first bytes of the backend response after very close to 5 seconds. Looks very much like first_byte_timeout=5s elapsed. Varnish could also do that on a connection reset, meaning that the connection was closed by the backend or an intervening network component -- the latter might explain why Apache doesn't seem to receive the request. Since the time difference in the Beresp Timestamp is so close to exactly 5 seconds, I'd suspect that some component has hit a timeout. HTH, Geoff - -- ** * * UPLEX - Nils Goroll Systemoptimierung Scheffelstraße 32 22301 Hamburg Tel +49 40 2880 5731 Mob +49 176 636 90917 Fax +49 40 42949753 http://uplex.de -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBCAAGBQJXNYxXAAoJEOUwvh9pJNURUIEP/RYgf223+oUrNe2ZLzwMdDE2 QGkrNNSQY6CleVW+lgIW2Y1gYZVUXsRaRP2qVwZVld6iTizVFiMFKP1ojQAhbWph 17k+JqVby2oggs2lRChFyWRpkwZigeMJmgopGTE3HJfm5Bhn1uY/qrCSHhQsxpRJ h63Cs6J0mlIoJREIAXxVBK0YS5LH/uoAjWemhtNksADCyir32uyxY2rREn7K7j8Q x/owTz9O76s2Xc1URk2DxhOk16k59AbfkwQSrFfBMubHhpa1wPXxXEUXnx4IKkTJ 3UDyXMK42vqiiZcECC2+Qgku9C4flxP+tCsIcKNTnYCya/rFKr7EesMx0UNUaLMX AesdDVDZRunIjZQM5B6yJePCE2eBxSsXZTXpwOthxo/p7D4aZGnaNqaS1zqcjDMO WvrVhWv76Nyq/OKZvuNjDRHxles2y5cNbjwOWGIrmvepSFbRgvQolc9JhXwIn3b9 mGwxGUA8n8oAhpPaYpWrJPnYW12lQuqcBJZGQBR0wjDgHNR9VmimB9UtAvSSI4nO ipwWjSH7LEhhv5k+Ao0o/bjZpadZA7F23L3onHxqI8+bBy3u+p0ul9wQr+Z5+Y+U i7kGbmPNOPgtvhfoV/84ax3YfsTp9fZBE07rk47s3iDhkwFcSZTIzmx0X8rt1Mxn 6nPvnDlUbL5F8VnE7YJN =3nFf -----END PGP SIGNATURE----- _______________________________________________ varnish-misc mailing list [email protected] https://www.varnish-cache.org/lists/mailman/listinfo/varnish-misc
