[Bug 1494141] [NEW] HAProxy 1.5 init script does not terminate processes
Claudio Kuenzler
1494141 at bugs.launchpad.net
Thu Sep 10 06:25:48 UTC 2015
Public bug reported:
On a new installation of Ubuntu 14.04.3 LTS I installed HAProxy 1.5 from
trusty-backports (1.5.4-1ubuntu2.1~ubuntu14.04.1).
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, either).
Only with a kill I was able to correctly terminate the HAProxy
processes.
The following output should show more clarity:
root at 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 at mylinux:~# service haproxy stop
* Stopping haproxy haproxy [ OK ]
root at mylinux:~# service haproxy status
haproxy not running.
root at 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 at mylinux:~# killall haproxy
root at 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 at mylinux:~# service haproxy start
* Starting haproxy haproxy [ OK ]
root at 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 at mylinux:~# service haproxy restart
* Restarting haproxy haproxy [ OK ]
root at nzzad-lb01-test:~# 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 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
** Affects: haproxy (Ubuntu)
Importance: Undecided
Status: New
** Tags: haproxy
** Description changed:
On a new installation of Ubuntu 14.04.3 LTS I installed HAProxy 1.5 from
- trusty-backports.
+ trusty-backports (1.5.4-1ubuntu2.1~ubuntu14.04.1).
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 at 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
-
+ 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 at mylinux:~# service haproxy stop
- * Stopping haproxy haproxy [ OK ]
-
+ * Stopping haproxy haproxy [ OK ]
root at mylinux:~# service haproxy status
haproxy not running.
+ root at 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 at mylinux:~# killall haproxy
root at 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
+ 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 at mylinux:~# killall haproxy
-
+ root at mylinux:~# service haproxy start
+ * Starting haproxy haproxy [ OK ]
root at 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
+ 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 at mylinux:~# service haproxy start
- * Starting haproxy haproxy [ OK ]
-
-
- root at 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 at mylinux:~# service haproxy restart
- * Restarting haproxy haproxy [ OK ]
-
+ * Restarting haproxy haproxy [ OK ]
root at nzzad-lb01-test:~# 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 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
+ 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
** Description changed:
On a new installation of Ubuntu 14.04.3 LTS I installed HAProxy 1.5 from
trusty-backports (1.5.4-1ubuntu2.1~ubuntu14.04.1).
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).
+ (or restart, in this matter, either).
Only with a kill I was able to correctly terminate the HAProxy
processes.
The following output should show more clarity:
root at 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 at mylinux:~# service haproxy stop
* Stopping haproxy haproxy [ OK ]
root at mylinux:~# service haproxy status
haproxy not running.
root at 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 at mylinux:~# killall haproxy
root at 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 at mylinux:~# service haproxy start
* Starting haproxy haproxy [ OK ]
root at 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 at mylinux:~# service haproxy restart
* Restarting haproxy haproxy [ OK ]
root at nzzad-lb01-test:~# 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 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
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https://bugs.launchpad.net/bugs/1494141
Title:
HAProxy 1.5 init script does not terminate processes
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