I think that the recommended way to restart when using the wrapper is to signal with a HUP or USR2 to the wrapper which will take care of the soft-restart of haproxy itself.
I believe that a HUP will just cause haproxy to be restarted while the USR2 will reload both haproxy and the wrapper binary itself. The sample unit file in contrib/systemd/haproxy.service.in is: [Unit] Description=HAProxy Load Balancer After=network.target [Service] ExecStartPre=@SBINDIR@/haproxy -f /etc/haproxy/haproxy.cfg -c -q ExecStart=@SBINDIR@/haproxy-systemd-wrapper -f /etc/haproxy/haproxy.cfg -p /run/haproxy.pid ExecReload=/bin/kill -USR2 $MAINPID KillMode=mixed Restart=always [Install] WantedBy=multi-user.target On Tue, Jan 20, 2015 at 1:38 AM, Yaron Rosenbaum <[email protected]> wrote: > Hi > > Adding the -sf flag to haproxy-systemd-wrapper causes it to exit and print > usage info. > (-sf <pid> does the same). > Haproxy 1.5.8, debian wheezy. > > Is this a known issue? am I using it incorrectly? > I’m assuming a reload would be issuing the same command (with pids after > -sf) > > Thanks. > > root# haproxy-systemd-wrapper -f /opt/multicloud/discovery/haproxy.cfg -D > -p /var/run/haproxy.pid -sf > <7>haproxy-systemd-wrapper: executing /usr/sbin/haproxy -f > /opt/multicloud/discovery/haproxy.cfg -D -p /var/run/haproxy.pid -sf -Ds > HA-Proxy version 1.5.8 2014/10/31 > Copyright 2000-2014 Willy Tarreau <[email protected]> > > Usage : haproxy [-f <cfgfile>]* [ -vdVD ] [ -n <maxconn> ] [ -N <maxpconn> > ] > [ -p <pidfile> ] [ -m <max megs> ] [ -C <dir> ] > -v displays version ; -vv shows known build options. > -d enters debug mode ; -db only disables background mode. > -dM[<byte>] poisons memory with <byte> (defaults to 0x50) > -V enters verbose mode (disables quiet mode) > -D goes daemon ; -C changes to <dir> before loading files. > -q quiet mode : don't display messages > -c check mode : only check config files and exit > -n sets the maximum total # of connections (2000) > -m limits the usable amount of memory (in MB) > -N sets the default, per-proxy maximum # of connections (2000) > -L set local peer name (default to hostname) > -p writes pids of all children to this file > -de disables epoll() usage even when available > -dp disables poll() usage even when available > -dS disables splice usage (broken on old kernels) > -dV disables SSL verify on servers side > -sf/-st [pid ]* finishes/terminates old pids. Must be last > arguments. > > <5>haproxy-systemd-wrapper: exit, haproxy RC=256 > > > (Y) > >
