Datadog PM2 check

A check for pm2 processes for DataDog

Installation

• Copy /checks.d/pm2.py to /etc/dd-agent/checks.d/pm2.py and conf.d/pm2.yaml to /etc/dd-agent/conf.d/pm2.yaml.
• Add the datadog agent user dd-agent to the sudoers (at least with permission to run sudo pm2 without a password).
• If pm2 is running as a non-root user add -u [usrname] to the command in pm2.yaml
• Then restart Datadog agent: /etc/init.d/datadog-agent restart