Мы настроили обратный прокси-сервер на внешних серверах, которые подключаются к внутренним серверам через балансировщик нагрузки.
Конфигурация обратного прокси Apache:
ProxyPass http: /// context / retry = 0 timeout = 30
Когда мы выполняем нагрузочное тестирование, рабочий для серверного соединения терпит неудачу и никогда не подключается для этого внутреннего сервера. Хотя retry=0 указано.
Журнал ошибок Apache:
[Wed Mar 20 12:23:26.292232 2019] [proxy:trace2] [pid 36176:tid 140617447184128] proxy_util.c(2765): HTTP: fam 2 socket created to connect to <LOAD-BALANACER-DNS>
[Wed Mar 20 12:23:56.322423 2019] [proxy:error] [pid 36176:tid 140617447184128] (70007)The timeout specified has expired: AH00957: HTTP: attempt to connect to 10.19.134.64:80 (<LOAD-BALANACER-DNS>) failed
[Wed Mar 20 12:23:56.322496 2019] [proxy:error] [pid 36176:tid 140617447184128] AH00959: ap_proxy_connect_backend disabling worker for (<LOAD-BALANACER-DNS>) for 0s
[Wed Mar 20 12:23:56.322509 2019] [proxy:debug] [pid 36176:tid 140617447184128] proxy_util.c(2175): AH00943: HTTP: has released connection for (<LOAD-BALANACER-DNS>)
[Wed Mar 20 12:25:57.590705 2019] [proxy:trace2] [pid 36178:tid 140617304508160] proxy_util.c(1966): [client 14.142.125.100:42564] http: found worker http://<LOAD-BALANACER-DNS>/<API-CONTEXT>/ for http://<LOAD-BALANACER-DNS>/<API-ENDPOINT>, referer: https://<APPLICATION-ENDPOINT>/
[Wed Mar 20 12:25:57.590740 2019] [proxy:debug] [pid 36178:tid 140617304508160] mod_proxy.c(1160): [client 14.142.125.100:42564] AH01143: Running scheme http handler (attempt 0), referer: https://<APPLICATION-ENDPOINT>/
[Wed Mar 20 12:25:57.590748 2019] [proxy:debug] [pid 36178:tid 140617304508160] proxy_util.c(1904): AH00932: HTTP: worker for (<LOAD-BALANACER-DNS>) has been marked for retry
[Wed Mar 20 12:25:57.590767 2019] [proxy:debug] [pid 36178:tid 140617304508160] proxy_util.c(2160): AH00942: HTTP: has acquired connection for (<LOAD-BALANACER-DNS>)
[Wed Mar 20 12:25:57.590772 2019] [proxy:debug] [pid 36178:tid 140617304508160] proxy_util.c(2213): [client 14.142.125.100:42564] AH00944: connecting http://<LOAD-BALANACER-DNS>/<API-ENDPOINT> to <LOAD-BALANACER-DNS>:80, referer: https://<APPLICATION-ENDPOINT>/
[Wed Mar 20 12:25:57.590779 2019] [proxy:debug] [pid 36178:tid 140617304508160] proxy_util.c(2422): [client 14.142.125.100:42564] AH00947: connected /<API-ENDPOINT> to <LOAD-BALANACER-DNS>:80, referer: https://<APPLICATION-ENDPOINT>/
[Wed Mar 20 12:25:57.590798 2019] [proxy:trace2] [pid 36178:tid 140617304508160] proxy_util.c(2765): HTTP: fam 2 socket created to connect to <LOAD-BALANACER-DNS>
[Wed Mar 20 12:26:00.588182 2019] [proxy:debug] [pid 36178:tid 140617304508160] proxy_util.c(2790): (113)No route to host: AH00957: HTTP: attempt to connect to 10.19.136.229:80 (<LOAD-BALANACER-DNS>) failed