haproxy-upstart-wrapper

A wrapper for haproxy that works with Upstart so that reload signals are processed properly.

Just in time for Debian to switch to systemd.

install

$ npm install -g haproxy-upstart-wrapper

motivaion

The init script that comes with the haproxy package in Debian/Ubuntu is not an Upstart script. I have found the existing init script to be unreliable on reboots. In trying to convert the existing init script to an upstart job I discovered the unique way that haproxy seamlessly reloads config files.

Upstart can only send a signal to a process to tell it to reload its config files, while haproxy starts a whole new process after telling the currently running process to stop listening on specified ports. As a result of this incompatability, here is this wrapper script which starts haproxy, listens for the reload signal and then executes the process restarting procedure.

usage

Install the upstart job with:

$ haproxy-upstart-wrapper --install

Uninstall the upstart job with:

$ haproxy-upstart-wrapper --uninstall

Then you can use the normal upstart commands to manage haproxy:

$ service haproxy start
$ service haproxy reload
$ service haproxy stop

license

MIT