Hello! On Fri, Oct 28, 2022 at 09:01:27AM -0400, libresco_27 wrote:
> Thanks for your answer! > I have another query if we can actually see that keepalive is being disabled > in nginx logs. > Is it possible to confirm that if we run nginx in debug mode and if so, what > kind of logs should I look for? When keepalive with upstream servers is enabled, in the debug logs there will be "get keepalive peer", "get keepalive peer: using connection ...", "free keepalive peer", and "free keepalive peer: saving connection ..." messages when selecting a peer and finalizing upstream request. For example, a connection attempt without a cached connection but with keepalive enabled will look like: 2022/10/30 07:18:31 [debug] 13406#100156: *1 http init upstream, client timer: 0 2022/10/30 07:18:31 [debug] 13406#100156: *1 kevent set event: 11: ft:-2 fl:0025 2022/10/30 07:18:31 [debug] 13406#100156: *1 http script copy: "Host" 2022/10/30 07:18:31 [debug] 13406#100156: *1 http script var: "u" 2022/10/30 07:18:31 [debug] 13406#100156: *1 http script copy: "Connection" 2022/10/30 07:18:31 [debug] 13406#100156: *1 http script copy: "close" 2022/10/30 07:18:31 [debug] 13406#100156: *1 http script copy: "" 2022/10/30 07:18:31 [debug] 13406#100156: *1 http script copy: "" 2022/10/30 07:18:31 [debug] 13406#100156: *1 http proxy header: "GET / HTTP/1.0 Host: u Connection: close " 2022/10/30 07:18:31 [debug] 13406#100156: *1 http cleanup add: 21982D88 2022/10/30 07:18:31 [debug] 13406#100156: *1 init keepalive peer 2022/10/30 07:18:31 [debug] 13406#100156: *1 get keepalive peer 2022/10/30 07:18:31 [debug] 13406#100156: *1 get rr peer, try: 1 2022/10/30 07:18:31 [debug] 13406#100156: *1 stream socket 12 2022/10/30 07:18:31 [debug] 13406#100156: *1 connect to 127.0.0.1:8081, fd:12 #2 2022/10/30 07:18:31 [debug] 13406#100156: *1 kevent set event: 12: ft:-1 fl:0025 2022/10/30 07:18:31 [debug] 13406#100156: *1 connected Without keepalive enabled there will be no "init keepalive peer" and "get keepalive peer" messages: 2022/10/30 07:21:36 [debug] 13416#100132: *1 http init upstream, client timer: 0 2022/10/30 07:21:36 [debug] 13416#100132: *1 kevent set event: 11: ft:-2 fl:0025 2022/10/30 07:21:36 [debug] 13416#100132: *1 http script copy: "Host" 2022/10/30 07:21:36 [debug] 13416#100132: *1 http script var: "u" 2022/10/30 07:21:36 [debug] 13416#100132: *1 http script copy: "Connection" 2022/10/30 07:21:36 [debug] 13416#100132: *1 http script copy: "close" 2022/10/30 07:21:36 [debug] 13416#100132: *1 http script copy: "" 2022/10/30 07:21:36 [debug] 13416#100132: *1 http script copy: "" 2022/10/30 07:21:36 [debug] 13416#100132: *1 http proxy header: "GET / HTTP/1.0 Host: u Connection: close " 2022/10/30 07:21:36 [debug] 13416#100132: *1 http cleanup add: 21982D88 2022/10/30 07:21:36 [debug] 13416#100132: *1 get rr peer, try: 1 2022/10/30 07:21:36 [debug] 13416#100132: *1 stream socket 12 2022/10/30 07:21:36 [debug] 13416#100132: *1 connect to 127.0.0.1:8081, fd:12 #2 2022/10/30 07:21:36 [debug] 13416#100132: *1 kevent set event: 12: ft:-1 fl:0025 2022/10/30 07:21:36 [debug] 13416#100132: *1 connected Hope this helps. -- Maxim Dounin http://mdounin.ru/ _______________________________________________ nginx mailing list -- nginx@nginx.org To unsubscribe send an email to nginx-le...@nginx.org
