cloudstack/systemvm/debian/opt/cloud
Wei Zhou be112a0220
vrouter: reload haproxy when cfg file is updated (#3726)
since 4.11.3, haproxy is always restarted when add/delete a lb rule.
When haproxy is started, the processes are
```
root@r-854-VM:~# ps aux |grep haproxy
root     22272  0.0  0.2   4036   668 ?        Ss   07:52   0:00 /usr/sbin/haproxy-systemd-wrapper -f /etc/haproxy/haproxy.cfg -p /run/haproxy.pid
haproxy  22274  0.0  2.3  38444  5856 ?        S    07:52   0:00 /usr/sbin/haproxy-master
haproxy  22275  0.0  0.3  38444   880 ?        Ss   07:52   0:00 /usr/sbin/haproxy -f /etc/haproxy/haproxy.cfg -p /run/haproxy.pid -Ds
```
When haproxy is reload, the processes are
```
root@r-854-VM:~# ps aux |grep haproxy
root     22272  0.0  0.2   4168   632 ?        Ss   07:52   0:00 /usr/sbin/haproxy-systemd-wrapper -f /etc/haproxy/haproxy.cfg -p /run/haproxy.pid
haproxy  22283  0.0  2.3  38444  5884 ?        S    07:53   0:00 /usr/sbin/haproxy-master
haproxy  22286  0.0  0.3  38444   880 ?        Ss   07:53   0:00 /usr/sbin/haproxy -f /etc/haproxy/haproxy.cfg -p /run/haproxy.pid -Ds -sf 22275
```

We need to change the pid file from /var/run/haproxy.pid to /run/haproxy.pid, so the haproxy will be reloaded instead of restarted.
2020-01-29 16:01:19 +05:30
..
bin vrouter: reload haproxy when cfg file is updated (#3726) 2020-01-29 16:01:19 +05:30
templates CLOUDSTACK-9114: Reduce VR downtime during network restart (#2508) 2018-05-11 12:48:07 +05:30
testdata CLOUDSTACK-10013: SystemVM codebase refactorings and improvements 2017-12-23 09:22:44 +05:30