Send Heroku logs to an rsyslog server and save them to separate files by application

gistfile1.md

• Add a Heroku drain for your app to forward the logs to your rsyslog server:

    heroku drains:add --app my-prod-app syslog://logging01.prod.mydomain.net:514
  

• List the drain you just created to get the unique Drain ID:

    heroku drains -x --app my-prod-app
  

• On the rsyslog server save the logs coming from Heroku to separate files, without duplicating to /var/log/messages (thanks to the & ~). Create a /etc/rsyslog.d/90-heroku.conf file containing:

    if $HOSTNAME startswith 'Drain_ID' then /opt/log/heroku/my-prod-app.log
    & ~
  

• Duplicate the above block for each log file, with & ~ on a separate line each time. Restart rsyslog when you're done and don't forget to set up logrotation.