Example Monit Configuration ERB file to leverage Ruby for Config

monit.cfg.erb

<% PWD = ENV["PWD"] %>
<% PID_DIR = '/usr/local/var/run' %>	
<% 
  ADDITIONAL = ''
  if ENV['RVM']
    ADDITIONAL = "export PATH=#{ENV['PATH']} && export GEM_HOME=#{ENV['GEM_HOME']} && export GEM_PATH=#{ENV['GEM_PATH']} && export HOME=#{ENV['HOME']} && "
  end
%>

#
# ENVIRONMENT SETS
#

set daemon 120  # Poll every two minutes
set logfile <%=PID_DIR%>/monit.log

set mailserver smtp.gmail.com port 587
     username "[email protected]" password "spammy" using tlsv1, www.example.com
     with timeout 15 seconds

set alert [email protected]

set httpd port 2812 address localhost
	allow localhost
	allow admin:monit

#
# PROCESS CHECKS
#

# Check for daemonized Redis
check process redis with pidfile <%=PID_DIR%>/redis.pid
	start program = "/usr/local/bin/redis-server /usr/local/etc/redis.conf"
	stop program = "/usr/local/bin/redis-cli -p 6379 shutdown"
    group redis

# Check for Ruby sidekiq worker process
check process sidekiq_worker with pidfile "<%=PID_DIR%>/sidekiq-worker.pid"
	start program = "/bin/bash -c '<%= ADDITIONAL %> cd <%= PWD %> && nohup bundle exec sidekiq -v -e production -P <%=PID_DIR%>/sidekiq-worker.pid -q * -c 25 >> <%=PID_DIR%>/sidekiq.log 2>&1'" with timeout 90 seconds
	stop program = "/bin/bash -c '<%= ADDITIONAL %> cd <%= PWD %> && nohup bundle exec sidekiqctl stop <%=PID_DIR%>/sidekiq-worker.pid 60 >> <%=PID_DIR%>/sidekiq.log 2>&1'" with timeout 90 seconds
	group sidekiq