Rake tasks via Crontab with RVM
What seemed like a simple task has amounted to plenty of messing about. But here we go, the following didn’t work at all, it filled /var/mail/rails with junk and failure messages about missing a missing bundle command.
rails@fashion1-002:/var/www/app/current$ crontab -l
# m h dom mon dow command
0 5 * * * cd /var/www/app/current && bundle exec rake app:activity:rebuild
# 0 9 * * 1 cd /var/www/app/current && bundle exec rake app:jobs:digest
# */5 * * * * cd /var/www/app/current && bundle exec rails runner "SiteMailer.simple_message('contact@mydomain.me', 'Test', 'Test Cron Message').deliver"You have to use Environment Variables in this case to specify RAILS_ENV although it is already defined in my .bashrc, also if you’re using RVM in order to use the correct version of Ruby you must use RVM’s own wrapper scripts. Lastly to stop the output from cron ending up in a dead mailbox or spamming you direct the output of the command to /dev/null
rails@fashion1-002:/var/www/app/current$ crontab -l
# m h dom mon dow command
0 5 * * * cd /var/www/app/current && RAILS_ENV=production /home/rails/.rvm/wrappers/ruby-2.1.2@app/bundle exec rake app:activity:rebuild > /dev/null
# 0 9 * * 1 cd /var/www/app/current && RAILS_ENV=production /home/rails/.rvm/wrappers/ruby-2.1.2@app/bundle exec rake app:jobs:digest > /dev/null
# */5 * * * * cd /var/www/app/current && RAILS_ENV=production /home/rails/.rvm/wrappers/ruby-2.1.2@app/bundle exec rails runner "SiteMailer.simple_message('contact@mydomain.me', 'Test', 'Test Cron Message').deliver" > /dev/nullFixed.