Re: Graceful configuration changes?
haproxy -f /etc/haproxy.cfg -sf $(cat $PIDFILE) would do it haproxy -h HA-Proxy version 1.4.18 2011/09/16 Copyright 2000-2011 Willy Tarreau w...@1wt.eu Usage : haproxy [-f cfgfile]* [ -vdVD ] [ -n maxconn ] [ -N maxpconn ] [ -p pidfile ] [ -m max megs ] -v displays version ; -vv shows known build options. -d enters debug mode ; -db only disables background mode. -V enters verbose mode (disables quiet mode) -D goes daemon -q quiet mode : don't display messages -c check mode : only check config files and exit -n sets the maximum total # of connections (4) -m limits the usable amount of memory (in MB) -N sets the default, per-proxy maximum # of connections (4) -p writes pids of all children to this file -de disables epoll() usage even when available -ds disables speculative epoll() usage even when available -dp disables poll() usage even when available -dS disables splice usage (broken on old kernels) -sf/-st [pid ]* finishes/terminates old pids. Must be last arguments. Also see http://haproxy.1wt.eu/download/1.2/doc/haproxy-en.txt Vivek On Wed, Oct 19, 2011 at 9:00 PM, John Singleton jsing...@gmail.com wrote: Hi Kevin, I believe you can just send it a -HUP signal. eg: kill -HUP pid Best, JLS On Wed, Oct 19, 2011 at 4:37 PM, Kevin Lindsay ke...@trakker.ca wrote: Can HA Proxy make graceful configuration changes? Or does the entire proxy need to be restarted leaving space for downtime? Thanks, Kevin
Re: Graceful configuration changes?
Yes, that works, but there's a window during which neither the old process nor the new process is listening on the socket. Simon Horman implemented a master/worker model to avoid that downtime, but I guess it's not quite ready to be integrated into the mainline yet. I believe you can find his work at http://haproxy.1wt.eu/git?p=haproxy.git;a=shortlog;h=refs/heads/horms-rebased7 Best, Adam On Oct 19, 2011, at 9:00 PM, John Singleton wrote: Hi Kevin, I believe you can just send it a -HUP signal. eg: kill -HUP pid Best, JLS On Wed, Oct 19, 2011 at 4:37 PM, Kevin Lindsay ke...@trakker.ca wrote: Can HA Proxy make graceful configuration changes? Or does the entire proxy need to be restarted leaving space for downtime? Thanks, Kevin
