Comment 0 for bug 1494141
Revision history for this message
| Claudio Kuenzler (napsty) wrote HAProxy 1.5 init script does not terminate processes | #0 |
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1b1ed1a
(Get the code!)
On a new installation of Ubuntu 14.04.3 LTS I installed HAProxy 1.5 from trusty-backports.
When I restarted HAProxy, I got random HTTP 503 although the backend servers were all working fine. By checking netstat, I saw that HAProxy was listening multiple times on the frontend ports.
It seems that the init script coming with the installation does not work correctly. The processes are not terminated correctly when using stop (or restart, in this matter, too, which uses the stop function).
Only with a kill I was able to correctly terminate the HAProxy processes.
The following output should show more clarity:
root@mylinux:~# netstat -lntp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:8080 0.0.0.0:* LISTEN 4653/haproxy
tcp 0 0 0.0.0.0:8080 0.0.0.0:* LISTEN 4221/haproxy
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 956/nginx
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 855/sshd
tcp 0 0 0.0.0.0:8090 0.0.0.0:* LISTEN 4653/haproxy
tcp 0 0 0.0.0.0:8090 0.0.0.0:* LISTEN 4221/haproxy
tcp 0 0 0.0.0.0:8099 0.0.0.0:* LISTEN 4653/haproxy
tcp 0 0 0.0.0.0:8099 0.0.0.0:* LISTEN 4221/haproxy
tcp6 0 0 :::22 :::* LISTEN 855/sshd
root@mylinux:~# service haproxy stop
* Stopping haproxy haproxy [ OK ]
root@mylinux:~# service haproxy status
haproxy not running.
root@mylinux:~# netstat -lntp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:8080 0.0.0.0:* LISTEN 4653/haproxy
tcp 0 0 0.0.0.0:8080 0.0.0.0:* LISTEN 4221/haproxy
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 956/nginx
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 855/sshd
tcp 0 0 0.0.0.0:8090 0.0.0.0:* LISTEN 4653/haproxy
tcp 0 0 0.0.0.0:8090 0.0.0.0:* LISTEN 4221/haproxy
tcp 0 0 0.0.0.0:8099 0.0.0.0:* LISTEN 4653/haproxy
tcp 0 0 0.0.0.0:8099 0.0.0.0:* LISTEN 4221/haproxy
tcp6 0 0 :::22 :::* LISTEN 855/sshd
root@mylinux:~# killall haproxy
root@mylinux:~# netstat -lntp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 956/nginx
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 855/sshd
tcp6 0 0 :::22 :::* LISTEN 855/sshd
root@mylinux:~# service haproxy start
* Starting haproxy haproxy [ OK ]
root@mylinux:~# netstat -lntp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:8080 0.0.0.0:* LISTEN 8205/haproxy
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 956/nginx
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 855/sshd
tcp 0 0 0.0.0.0:8090 0.0.0.0:* LISTEN 8205/haproxy
tcp 0 0 0.0.0.0:8099 0.0.0.0:* LISTEN 8205/haproxy
tcp6 0 0 :::22 :::* LISTEN 855/sshd
root@mylinux:~# service haproxy restart
* Restarting haproxy haproxy [ OK ]
root@nzzad-
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:8080 0.0.0.0:* LISTEN 8286/haproxy
tcp 0 0 0.0.0.0:8080 0.0.0.0:* LISTEN 8205/haproxy
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 956/nginx
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 855/sshd
tcp 0 0 0.0.0.0:8090 0.0.0.0:* LISTEN 8286/haproxy
tcp 0 0 0.0.0.0:8090 0.0.0.0:* LISTEN 8205/haproxy
tcp 0 0 0.0.0.0:8099 0.0.0.0:* LISTEN 8286/haproxy
tcp 0 0 0.0.0.0:8099 0.0.0.0:* LISTEN 8205/haproxy
tcp6 0 0 :::22 :::* LISTEN 855/sshd