ElasticBeanstalk could be an easy tool for you to deploy your Ruby on Rails application. But if you want to customize your application further, it is not easy at all. In this post, I am going to show how you can run several common processes when deploying your application.
First, you would need to read this post here to understand about the following configuration files. My config files are originally based on that post.
Create a file called
commands: create_post_dir: command: "mkdir /opt/elasticbeanstalk/hooks/appdeploy/post" ignoreErrors: true files: "/opt/elasticbeanstalk/hooks/appdeploy/post/99_restart_delayed_job.sh": mode: "000755" owner: root group: root content: | #!/usr/bin/env bash . /opt/elasticbeanstalk/support/envvars cd $EB_CONFIG_APP_CURRENT su -c "RAILS_ENV=$RACK_ENV script/delayed_job -n 4 --pid-dir=$EB_CONFIG_APP_SUPPORT/pids restart" $EB_CONFIG_APP_USER &
You will need to first create a crontab under
.ebextensions with a content like this (Just a normal crontab syntax)
0 * * * * /bin/bash -l -c 'cd /var/app/current && script/rails runner -e production '\''Delayed::Job.enqueue Jobs::Users::SomeJob.new'\'''
And then, I have this config file for setting up cronjob on ElasticBeanstalk server
container_commands: 01_remove_old_cron_jobs: command: "crontab -r || exit 0" 02_cron_jobs: command: "cat .ebextensions/crontab | crontab" leader_only: true
Create a file named
.ebextensions with following content:
commands: create_post_dir: command: "mkdir /opt/elasticbeanstalk/hooks/appdeploy/post" ignoreErrors: true files: "/opt/elasticbeanstalk/hooks/appdeploy/post/50_restart_sidekiq.sh": mode: "000755" owner: root group: root content: | #!/usr/bin/env bash . /opt/elasticbeanstalk/support/envvars cd $EB_CONFIG_APP_CURRENT if [ -f /var/app/support/pids/sidekiq.pid ] then kill -TERM `cat /var/app/support/pids/sidekiq.pid` rm -rf /var/app/support/pids/sidekiq.pid fi . /opt/elasticbeanstalk/support/envvars.d/sysenv sleep 10 bundle exec sidekiq \ -e $RACK_ENV \ -P /var/app/support/pids/sidekiq.pid \ -C /var/app/current/config/sidekiq.yml \ -L /var/app/support/logs/sidekiq.log \ -d "/opt/elasticbeanstalk/hooks/appdeploy/pre/03_mute_sidekiq.sh": mode: "000755" owner: root group: root content: | #!/usr/bin/env bash . /opt/elasticbeanstalk/support/envvars if [ -f /var/app/support/pids/sidekiq.pid ] then kill -USR1 `cat /var/app/support/pids/sidekiq.pid` fi