A simpe process supervisor for containers.
exitd does one thing:
- run two or more processes and exit with an error if any of them exits.
Sometimes you need to run two or more processes in a container (say nginx and php-fpm) but you still want it to behave in a container-friendly manner.
Get the static binary from the release page.
exitd is intended to be used with tini, dumb-init or similar. It's not a replacement
for a proper init since it does none of the signal handling or process reaping
that init needs to do.
Typical Docker usage with tini:
ENTRYPOINT ["/sbin/tini", "--"]
CMD ["/sbin/exitd", "/usr/bin/nginx", "/usr/bin/php-fpm"]
Note that it's currently not possible to supply any command-line arguments
to your programs. If you need to pass arguments you can create wrapper scripts.
Please note the importance of using exec in these scripts to keep signal handling working.
For example:
ENTRYPOINT ["/sbin/tini", "--"]
CMD ["/sbin/exitd", "/root/scripts/nginx", "/root/scripts/php-fpm"]
/root/scripts/nginx
#!/bin/sh
exec /usr/sbin/nginx -c /etc/my-nginx-config.conf/root/scripts/php-fpm
#!/bin/sh
exec /usr/sbin/php-fpm -y /etc/my-php-fpm-config.conf