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monitrc is also updated to look like the packaged one
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gilles committed Mar 28, 2012
1 parent b2bbee3 commit 996e92c
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6 changes: 6 additions & 0 deletions attributes/default.rb
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Expand Up @@ -11,3 +11,9 @@
monit
EOS

case node['platform']
when "centos", "redhat", "fedora"
default[:monit][:include_dir] = '/etc/monit.d'
else
default[:monit][:include_dir] = '/etc/monit/conf.d'
end
11 changes: 11 additions & 0 deletions files/debian/monit.default
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# Defaults for monit initscript
# sourced by /etc/init.d/monit
# installed at /etc/default/monit by chef

# You must set this variable to for monit to start
startup=1

# To change the intervals which monit should run,
# edit the configuration file /etc/monit/monitrc
# It can no longer be configured here.

1 change: 1 addition & 0 deletions files/default/dummy.conf
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#an empty file because monit would not start if the conf.d dir is empty
14 changes: 11 additions & 3 deletions libraries/monitrc.rb
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Expand Up @@ -4,14 +4,22 @@ class Recipe
# variables Hash of variables to pass to the template
# reload Reload monit so it notices the new service. :delayed (default) or :immediately.
def monitrc(name, variables={}, reload = :delayed)
log "Making monitrc for: #{name}"
template "/etc/monit/conf.d/#{name}.conf" do
Chef::Log.info "Making monitrc for: #{name}"

action = :restart
if platform?(%W(fedora centos redhat))
action = :reload
end

template "#{node[:monit][:include_dir]}/#{name}.conf" do
owner "root"
group "root"
mode 0644
#this should be "monit/#{name}.conf.erb" or "#{name}.monit.conf.erb" to not conflict with other conf files
#but this is a non backward compat change. I'll leave it to the owner of the cookbook
source "#{name}.conf.erb"
variables variables
notifies :restart, resources(:service => "monit"), reload
notifies action, resources(:service => "monit"), reload
action :create
end
end
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4 changes: 3 additions & 1 deletion metadata.rb
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Expand Up @@ -5,6 +5,9 @@
long_description IO.read(File.join(File.dirname(__FILE__), 'README.rdoc'))
version "0.7"

%w{debian ubuntu redhat centos fedora}.each do |os|
supports os
end

attribute 'monit/notify_email',
:description => 'The email address to send alerts to.',
Expand All @@ -20,4 +23,3 @@
:description => 'When monit first starts, how long to delay before it starts performing checks',
:type => "string",
:required => "recommended"

64 changes: 47 additions & 17 deletions recipes/default.rb
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Expand Up @@ -2,33 +2,63 @@
action :install
end

if platform?("ubuntu")
#### prepare directories and additional things ###
include_dir = node[:monit][:include_dir]
if platform?(%W(fedora centos redhat))
directory include_dir do
owner 'root'
group 'root'
action :create
recursive true
end
else
#assume debian|ubuntu
directory include_dir do
owner 'root'
group 'root'
action :create
recursive true
end
cookbook_file "/etc/default/monit" do
source "monit.default"
owner "root"
group "root"
mode 0644
end
end
cookbook_file "#{include_dir}/dummy.conf" do
#this is a dummy file in conf.d, monit will not start with this directory empty
source "dummy.conf"
end

service "monit" do
action :start
enabled true
supports [:start, :restart, :stop]
#### main conf ####
if platform?(%W(fedora centos redhat))
template "monit_conf" do
path "/etc/monit.conf"
source 'monitrc.erb'
owner "root"
group "root"
variables :include_path => "#{include_dir}/*.conf"
end
else
#assume debian|ubuntu
template "monit_conf" do
path "/etc/monit/monitrc"
source 'monitrc.erb'
owner "root"
group "root"
variables :include_path => "#{include_dir}/*.conf"
end
end

template "/etc/monit/monitrc" do
owner "root"
group "root"
mode 0700
source 'monitrc.erb'
notifies :restart, resources(:service => "monit"), :immediate
#### service ####
supports = [:start, :restart, :stop]
if platform?(%W(fedora centos redhat))
supports << :reload
end

directory "/etc/monit/conf.d/" do
owner 'root'
group 'root'
mode 0755
action :create
recursive true
service "monit" do
action [:enable, :start]
supports supports
subscribes :restart, resources(:template => "monit_conf"), :immediate
end
242 changes: 242 additions & 0 deletions templates/centos/monitrc.erb
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###############################################################################
## Monit control file. CHEF HANDLED!!!
###############################################################################
##
## Comments begin with a '#' and extend through the end of the line. Keywords
## are case insensitive. All path's MUST BE FULLY QUALIFIED, starting with '/'.
##
## Below you will find examples of some frequently used statements. For
## information about the control file and a complete list of statements and
## options, please have a look in the Monit manual.
##
##
###############################################################################
## Global section
###############################################################################
##
## Start Monit in the background (run as a daemon):
#
set daemon <%= @node[:monit][:poll_period] %> # check services at 2-minute intervals
# # default Monit check immediately after Monit start)
#
#
## Set syslog logging with the 'daemon' facility. If the FACILITY option is
## omitted, Monit will use 'user' facility by default. If you want to log to
## a standalone log file instead, specify the full path to the log file
#
set logfile syslog facility log_daemon
#
#
### Set the location of the Monit id file which stores the unique id for the
### Monit instance. The id is generated and stored on first Monit start. By
### default the file is placed in $HOME/.monit.id.
#
# set idfile /var/.monit.id
#
### Set the location of the Monit state file which saves monitoring states
### on each cycle. By default the file is placed in $HOME/.monit.state. If
### the state file is stored on a persistent filesystem, Monit will recover
### the monitoring state across reboots. If it is on temporary filesystem, the
### state will be lost on reboot which may be convenient in some situations.
#
# set statefile /var/.monit.state
#
## Set the list of mail servers for alert delivery. Multiple servers may be
## specified using a comma separator. By default Monit uses port 25 - it is
## possible to override this with the PORT option.
#
# set mailserver mail.bar.baz, # primary mailserver
# backup.bar.baz port 10025, # backup mailserver on port 10025
# localhost # fallback relay
#
#
## By default Monit will drop alert events if no mail servers are available.
## If you want to keep the alerts for later delivery retry, you can use the
## EVENTQUEUE statement. The base directory where undelivered alerts will be
## stored is specified by the BASEDIR option. You can limit the maximal queue
## size using the SLOTS option (if omitted, the queue is limited by space
## available in the back end filesystem).
#
# set eventqueue
# basedir /var/monit # set the base directory where events will be stored
# slots 100 # optionally limit the queue size
#
#
## Send status and events to M/Monit (for more informations about M/Monit
## see http://mmonit.com/).
#
# set mmonit http://monit:monit@192.168.1.10:8080/collector
#
#
## Monit by default uses the following alert mail format:
##
## --8<--
## From: monit@$HOST # sender
## Subject: monit alert -- $EVENT $SERVICE # subject
##
## $EVENT Service $SERVICE #
## #
## Date: $DATE #
## Action: $ACTION #
## Host: $HOST # body
## Description: $DESCRIPTION #
## #
## Your faithful employee, #
## Monit #
## --8<--
##
## You can override this message format or parts of it, such as subject
## or sender using the MAIL-FORMAT statement. Macros such as $DATE, etc.
## are expanded at runtime. For example, to override the sender, use:
#
set mail-format {
from: <%= @node[:monit][:mail_format][:from] %>
subject: <%= @node[:monit][:mail_format][:subject] %>
message: <%= @node[:monit][:mail_format][:message] %>
}
#
#
## You can set alert recipients whom will receive alerts if/when a
## service defined in this file has errors. Alerts may be restricted on
## events by using a filter as in the second example below.
#
# set alert sysadm@foo.bar # receive all alerts
# set alert manager@foo.bar only on { timeout } # receive just service-
# # timeout alert
#
#
## Monit has an embedded web server which can be used to view status of
## services monitored and manage services from a web interface. See the
## Monit Wiki if you want to enable SSL for the web server.
#
set httpd port 2812 and
use address localhost # only accept connection from localhost
allow localhost # allow localhost to connect to the server and
# allow admin:monit # require user 'admin' with password 'monit'
# allow @monit # allow users of group 'monit' to connect (rw)
# allow @users readonly # allow users of group 'users' to connect readonly
#
#
###############################################################################
## Services
###############################################################################
##
## Check general system resources such as load average, cpu and memory
## usage. Each test specifies a resource, conditions and the action to be
## performed should a test fail.
#
# check system myhost.mydomain.tld
# if loadavg (1min) > 4 then alert
# if loadavg (5min) > 2 then alert
# if memory usage > 75% then alert
# if cpu usage (user) > 70% then alert
# if cpu usage (system) > 30% then alert
# if cpu usage (wait) > 20% then alert
#
#
## Check a file for existence, checksum, permissions, uid and gid. In addition
## to alert recipients in the global section, customized alert can be sent to
## additional recipients by specifying a local alert handler. The service may
## be grouped using the GROUP option. More than one group can be specified by
## repeating the 'group name' statement.
#
# check file apache_bin with path /usr/local/apache/bin/httpd
# if failed checksum and
# expect the sum 8f7f419955cefa0b33a2ba316cba3659 then unmonitor
# if failed permission 755 then unmonitor
# if failed uid root then unmonitor
# if failed gid root then unmonitor
# alert security@foo.bar on {
# checksum, permission, uid, gid, unmonitor
# } with the mail-format { subject: Alarm! }
# group server
#
#
## Check that a process is running, in this case Apache, and that it respond
## to HTTP and HTTPS requests. Check its resource usage such as cpu and memory,
## and number of children. If the process is not running, Monit will restart
## it by default. In case the service is restarted very often and the
## problem remains, it is possible to disable monitoring using the TIMEOUT
## statement. This service depends on another service (apache_bin) which
## is defined above.
#
# check process apache with pidfile /usr/local/apache/logs/httpd.pid
# start program = "/etc/init.d/httpd start" with timeout 60 seconds
# stop program = "/etc/init.d/httpd stop"
# if cpu > 60% for 2 cycles then alert
# if cpu > 80% for 5 cycles then restart
# if totalmem > 200.0 MB for 5 cycles then restart
# if children > 250 then restart
# if loadavg(5min) greater than 10 for 8 cycles then stop
# if failed host www.tildeslash.com port 80 protocol http
# and request "/somefile.html"
# then restart
# if failed port 443 type tcpssl protocol http
# with timeout 15 seconds
# then restart
# if 3 restarts within 5 cycles then timeout
# depends on apache_bin
# group server
#
#
## Check filesystem permissions, uid, gid, space and inode usage. Other services,
## such as databases, may depend on this resource and an automatically graceful
## stop may be cascaded to them before the filesystem will become full and data
## lost.
#
# check filesystem datafs with path /dev/sdb1
# start program = "/bin/mount /data"
# stop program = "/bin/umount /data"
# if failed permission 660 then unmonitor
# if failed uid root then unmonitor
# if failed gid disk then unmonitor
# if space usage > 80% for 5 times within 15 cycles then alert
# if space usage > 99% then stop
# if inode usage > 30000 then alert
# if inode usage > 99% then stop
# group server
#
#
## Check a file's timestamp. In this example, we test if a file is older
## than 15 minutes and assume something is wrong if its not updated. Also,
## if the file size exceed a given limit, execute a script
#
# check file database with path /data/mydatabase.db
# if failed permission 700 then alert
# if failed uid data then alert
# if failed gid data then alert
# if timestamp > 15 minutes then alert
# if size > 100 MB then exec "/my/cleanup/script" as uid dba and gid dba
#
#
## Check directory permission, uid and gid. An event is triggered if the
## directory does not belong to the user with uid 0 and gid 0. In addition,
## the permissions have to match the octal description of 755 (see chmod(1)).
#
# check directory bin with path /bin
# if failed permission 755 then unmonitor
# if failed uid 0 then unmonitor
# if failed gid 0 then unmonitor
#
#
## Check a remote host availability by issuing a ping test and check the
## content of a response from a web server. Up to three pings are sent and
## connection to a port and an application level network check is performed.
#
# check host myserver with address 192.168.1.1
# if failed icmp type echo count 3 with timeout 3 seconds then alert
# if failed port 3306 protocol mysql with timeout 15 seconds then alert
# if failed url http://user:password@192.168.1.1:8080/?querystring
# and content == 'action="j_security_check"'
# then alert
#
#
###############################################################################
## Includes
###############################################################################
##
## It is possible to include additional configuration parts from other files or
## directories.
#

include <%= @include_path %>
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