[Apache] 503 Service Unavailable 에러

먼저 mod_jk.log 파일을 살펴본다.

 

[21 12 01 01:21:08] [10:139659334096640] [info] jk_open_socket::jk_connect.c (815): connect to 127.0.0.1:8009 failed (errno=111)
[21 12 01 01:21:08] [10:139659334096640] [info] ajp_connect_to_endpoint::jk_ajp_common.c (1064): (worker1) Failed opening socket to (127.0.0.1:8009) (errno=111)
[21 12 01 01:21:08] [10:139659334096640] [error] ajp_send_request::jk_ajp_common.c (1724): (worker1) connecting to backend failed. Tomcat is probably not started or is listening on the wrong port (errno=111)
[21 12 01 01:21:08] [10:139659334096640] [info] ajp_service::jk_ajp_common.c (2774): (worker1) sending request to tomcat failed (recoverable), because of error during request sending (attempt=1)
[21 12 01 01:21:08] [10:139659334096640] [info] jk_open_socket::jk_connect.c (815): connect to 127.0.0.1:8009 failed (errno=111)
[21 12 01 01:21:08] [10:139659334096640] [info] ajp_connect_to_endpoint::jk_ajp_common.c (1064): (worker1) Failed opening socket to (127.0.0.1:8009) (errno=111)
[21 12 01 01:21:08] [10:139659334096640] [error] ajp_send_request::jk_ajp_common.c (1724): (worker1) connecting to backend failed. Tomcat is probably not started or is listening on the wrong port (errno=111)
[21 12 01 01:21:08] [10:139659334096640] [info] ajp_service::jk_ajp_common.c (2774): (worker1) sending request to tomcat failed (recoverable), because of error during request sending (attempt=2)
[21 12 01 01:21:08] [10:139659334096640] [error] ajp_service::jk_ajp_common.c (2795): (worker1) connecting to tomcat failed (rc=-3, errors=19, client_errors=0).
[21 12 01 01:21:08] [10:139659334096640] [info] jk_handler::mod_jk.c (2991): Service error=-3 for worker=worker1

WAS와 연결이 되지 않는 상태이다.

 

apache의 httpd.conf 파일과 workers.properties를 다시 한번 살펴본다.

 

1. httpd.conf

LoadModule jk_module modules/mod_jk.so

<IfModule jk_module>
        JKWorkersFile conf/workers.properties
        JKLogFile logs/mod_jk.log
        JKLogLevel info
        JKLogStampFormat "[%y %m %d %H:%M:%S] "
        JKShmFile logs/mod_jk.shm
        JKMount /fromdb worker1
</IfModule>

• JKWorkersFile의 위치가 제대로 설정되었는지
• JKMount가 원하는 경로로 설정되었는지

 

2. workers.properties

worker.list=worker1

worker.worker1.port=8009
worker.worker1.host=host.docker.internal
worker.worker1.type=ajp13

• 통신 port 번호
  • WAS의 통신 port 번호와 같은지
  • 이미 사용 중인 포트번호는 아닌지
• host
  • WAS의 host 주소로 제대로 설정되었는지
  • WAS와 다른 서버라면 제대로 확인해줘야한다.
• 통신 프로토콜
  
  • WAS에서 프로토콜이 AJP/13으로 올바르게 설정되었는지