Simple process manager
Project description
ReloadConf
Simple process manager. Reloadconf is a front-end for arbitrary commands. It will watch a directory for configuration files and optionally run a command to test those configuration files. When the configuration is valid a command (daemon) is executed. Whenever new configuration files are detected this procedure is repeated.
Here is an example usage for nginx.
$ reloadconf --config=/etc/nginx/nginx.conf --command="nginx -g nodaemon: true" --test="nginx -t" --watch=/tmp/nginx
First of all, if /etc/nginx/nginx.conf exists, it will be verified using nginx -t and if successful, nginx will be started. In either case reloadconf will then proceed to watch /tmp/nginx for a file name nginx.conf. If present, that fill will be tested, and a if successful a HUP signal will be sent to nginx (or nginx will be started).
Docker
ReloadConf is generally useful whenever you want a process to recieve a HUP signal after new configuration is written. It was written to be used with docker where one container generates a config file for a process in another container. To use it for this purpose, simply install then utilize reloadconf in your Dockerfile.
# Install reloadconf. RUN pip install reloadconf # Map a volume into the container. VOLUME /mnt/data/nginx/:/conf/ # Watch for another container to modify the conf and reload nginx. CMD reloadconf --command="nginx -c /conf/nginx.conf -g'nodaemon: true;'" --watch=/conf/in --test="nginx -c /conf/nginx.conf -t" --config=/conf/nginx.conf
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