Chef monit cookbook

attributes-default.rb

default[:monit][:alert_emails]     = %w( root@localhost )
default[:monit][:logfile]          = "/var/log/monit.log"
default[:monit][:alert_from]       = "monit@localhost"
default[:monit][:remote_user]      = 'admin'
default[:monit][:remote_password]  = 'secret'

definitions-monitrc.rb

define :monitrc, rules: [], variables: {} do
  Chef::Log.info("Generating monitrc for: #{params[:name]}")

  template "/etc/monit/conf.d/#{params[:name]}.monitrc" do
    mode      "0744"
    user      "root"
    source    params[:source]
    variables params[:variables]
    notifies  :restart, "service[monit]", :immediately
    action    :create
    variables rules: params[:rules],
              vars:  params[:variables],
              name:  params[:name]
  end
end

recipes-default.rb

package "monit"

directory "/etc/monit/conf.d" do
  action :create
  recursive true
end

template "/etc/monit/monitrc" do
  source "monitrc.erb"
  mode   "0600"
  variables :alert_emails => node[:monit][:alert_emails],
            :logfile      => node[:monit][:logfile]
  notifies :restart, "service[monit]"
end

service "monit" do
  action :nothing
end

templates-default-monitrc.erb

set daemon 30
set mailserver localhost
set mail-format { from: <%= node[:monit][:alert_from] %> }
<% @alert_emails.each do |email| -%>
set alert <%= email %> but not on { pid instance }
<% end %>
set eventqueue
    basedir /var/monit
    slots 100
set logfile <%= @logfile %>
Include /etc/monit/conf.d/*.monitrc
set httpd port 2812
  allow <%= node[:monit][:remote_user] %>:<%= node[:monit][:remote_password] %>

your-cookbook-recipes-default.rb

# This is an example of using the "monitrc" definition

monitrc :nginx do
  source "nginx.monitrc.erb" # <= this is the monitrc.erb template in your own cookbook
  rules  node[:nginx][:monit][:rules]
end

your-cookbook-templates-default-nginx.monitrc.erb

check process nginx
  with pidfile <%= node[:nginx][:pid] %>
  start program = "/etc/init.d/nginx start" as uid root and gid root
  stop program = "/etc/init.d/nginx stop" as uid root and gid root
  <% @rules.each do |rule| -%>
  <%= rule %>
  <% end -%>