Difference between revisions of "Monit"

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__NOTOC__
  
__NOTOC__
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= M/Monit =
 +
=== How to install M/Monit from sources ===
  ⚫
* Download Monit tar file from tildeslash
−  
⚫
== How to install M/Monit from sources ==
  
⚫
# Download Monit tar file from tildeslash
  
−
 
−
<pre><nowiki>
  
 
wget http://www.tildeslash.com/monit/dist/monit-4.10.1.tar.gz
  
wget http://www.tildeslash.com/monit/dist/monit-4.10.1.tar.gz
  ⚫
* Unpack and install
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</nowiki></pre>
  
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⚫
# Unpack and install
  
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−
<pre><nowiki>
  
 
tar zxvf monit-4.10.1.tar.gz
  
tar zxvf monit-4.10.1.tar.gz
 
cd monit-4.10.1
  
cd monit-4.10.1
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make
  
make
 
make install
  
make install
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</nowiki></pre>
  
   
  ⚫
=== How to setup M/Monit ===
−  
  ⚫
* Open <tt>/etc/monit.conf</tt> and set/uncomment this values:
⚫
== How to setup M/Monit ==
  
  ⚫
** Run Monit as daemon
⚫
# Open `/etc/monit.conf` and set/uncomment this values:
  
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−
<pre><nowiki>
  
⚫
# Run Monit as daemon
  
 
set daemon 120
  
set daemon 120
  ⚫
** Send logs to /var/log/messages
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⚫
# Send logs to /var/log/messages
  
 
set logfile syslog facility log_daemon
  
set logfile syslog facility log_daemon
  ⚫
** Setup Monit Web Service with authentication from anywhere
−  
⚫
# Setup Monit Web Service with authentication from anywhere
  
 
set httpd port 2812 and
  
set httpd port 2812 and
 
allow user:password
  
allow user:password
  ⚫
** Read configuration files for each service
−  
⚫
# Read configuration files for each service
  
 
include /etc/monit.d/*
  
include /etc/monit.d/*
  ⚫
* Open <tt>/etc/httpd/conf/httpd.conf</tt> and add the following lines:
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</nowiki></pre>
  
−  
−  
⚫
# Open `/etc/httpd/conf/httpd.conf` and add the following lines:
  
−
 
−
<pre><nowiki>
  
 
# Avoid Monit activity to be logged on Apache log
  
# Avoid Monit activity to be logged on Apache log
 
SetEnvIf Request_URI "^/monit/token$" dontlog
  
SetEnvIf Request_URI "^/monit/token$" dontlog
 
CustomLog logs/access_log common env=!dontlog
  
CustomLog logs/access_log common env=!dontlog
  ⚫
* Open port on iptables to watch monit on TCP port 2812
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</nowiki></pre>
  
−  
⚫
# Open port on iptables to watch monit on TCP port 2812
  
−
{{
  
 
iptables -A INPUT -p tcp --dport 2812 -j ACCEPT
  
iptables -A INPUT -p tcp --dport 2812 -j ACCEPT
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</nowiki></pre>
  
   
   
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== How to configure M/Monit services ==
 +
=== How to configure M/Monit services ===
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=== Apache ===
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==== Apache ====
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'''File:''' `/etc/monit.d/httpd.conf`
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'''File:''' <tt>/etc/monit.d/httpd.conf</tt>
−
 
−
<pre><nowiki>
  
 
check process httpd with pidfile /var/run/httpd.pid
  
check process httpd with pidfile /var/run/httpd.pid
 
group apache
  
group apache
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then restart
  
then restart
 
if 5 restarts within 5 cycles then timeout
  
if 5 restarts within 5 cycles then timeout
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</nowiki></pre>
  
   
  ⚫
==== MySQL ====
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  ⚫
'''File:''' <tt>/etc/monit.d/mysqld.conf</tt>
⚫
=== MySQL ===
  
⚫
'''File:''' `/etc/monit.d/mysqld.conf`
  
−
 
−
<pre><nowiki>
  
 
check process mysql with pidfile /var/run/mysqld/mysqld.pid
  
check process mysql with pidfile /var/run/mysqld/mysqld.pid
 
group mysql
  
group mysql
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then restart
  
then restart
 
if 5 restarts within 5 cycles then timeout
  
if 5 restarts within 5 cycles then timeout
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</nowiki></pre>
  
   
  ⚫
==== Actionqueue ====
−  
  ⚫
'''File:''' <tt>/etc/monit.d/actionqueue.conf</tt>
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=== xmlBlaster ===
  
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'''File:''' `/etc/monit.d/xmlblaster.conf`
  
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<pre><nowiki>
  
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check process xmlblaster with pidfile /var/run/xmlblaster.pid
  
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group root
  
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start program = "/sbin/service xmlblaster start"
  
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stop program = "/sbin/service xmlblaster stop"
  
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if failed host iron.bashlinux.com port 3412 protocol http
  
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and request "/status.html" then restart
  
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if 5 restarts within 5 cycles then timeout
  
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</nowiki></pre>
  
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−  
⚫
=== Actionqueue ===
  
⚫
'''File:''' `/etc/monit.d/actionqueue.conf`
  
−
 
−
<pre><nowiki>
  
 
check process actionqueue with pidfile /var/run/actionqueue.pid
  
check process actionqueue with pidfile /var/run/actionqueue.pid
 
group root
  
group root
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then restart
  
then restart
 
if 5 restarts within 5 cycles then timeout
  
if 5 restarts within 5 cycles then timeout
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</nowiki></pre>
  
   
  ⚫
=== How to setup and start M/Monit service ===
−  
  ⚫
==== Boot init from init.d ====
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== How to setup and start M/Monit service ==
  
⚫
=== Boot init from SYSV init.d ===
  
 
# Register the service to start on boot
  
# Register the service to start on boot
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−
<pre><nowiki>
  
 
chkconfig monit on
  
chkconfig monit on
−
</nowiki></pre>
  
   
 
# Start service
  
# Start service
−
 
−
<pre><nowiki>
  
 
service monit start
  
service monit start
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</nowiki></pre>
  
−  
   
−
=== Respawnning with inittab ===
 +
==== Respawnning with inittab ====
−
# Append {{/etc/inittab}} to add:
 +
* Append <tt>/etc/inittab</tt> to add:
−
 
−
<pre><nowiki>
  
 
mo:2345:respawn:/usr/bin/monit -Ic /etc/monit.conf
  
mo:2345:respawn:/usr/bin/monit -Ic /etc/monit.conf
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</nowiki></pre>
  
   
 
# Start monit
  
# Start monit
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−
<pre><nowiki>
  
 
init q
  
init q
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</nowiki></pre>
  

Revision as of 02:22, 10 June 2015

How to install M/Monit from sources

  • Download Monit tar file from tildeslash
wget http://www.tildeslash.com/monit/dist/monit-4.10.1.tar.gz
  • Unpack and install
tar zxvf monit-4.10.1.tar.gz
cd monit-4.10.1
./configure
make
make install

How to setup M/Monit

  • Open /etc/monit.conf and set/uncomment this values:
    • Run Monit as daemon
set daemon 120
    • Send logs to /var/log/messages
set logfile syslog facility log_daemon
    • Setup Monit Web Service with authentication from anywhere
set httpd port 2812 and
allow user:password
    • Read configuration files for each service
include /etc/monit.d/*
  • Open /etc/httpd/conf/httpd.conf and add the following lines:
# Avoid Monit activity to be logged on Apache log
SetEnvIf Request_URI "^/monit/token$" dontlog
CustomLog logs/access_log common env=!dontlog
  • Open port on iptables to watch monit on TCP port 2812
iptables -A INPUT -p tcp --dport 2812 -j ACCEPT


How to configure M/Monit services

Apache

File: /etc/monit.d/httpd.conf 

check process httpd with pidfile /var/run/httpd.pid
  group apache
  start program = "/sbin/service httpd start"
  stop program = "/sbin/service httpd stop"
  if failed port host 127.0.0.1 port 80 protocol http
    and request "/api/restaurant/id"
  then restart
  if 5 restarts within 5 cycles then timeout

MySQL

File: /etc/monit.d/mysqld.conf 

check process mysql with pidfile /var/run/mysqld/mysqld.pid
  group mysql
  start program = "/sbin/service mysqld start"
  stop program = "/sbin/service mysqld stop"
  if failed host 127.0.0.1 port 3306 protocol mysql
    then restart
  if 5 restarts within 5 cycles then timeout

Actionqueue

File: /etc/monit.d/actionqueue.conf 

check process actionqueue with pidfile /var/run/actionqueue.pid
  group root
  start program = "/sbin/service actionqueue start"
  stop program = "/sbin/service actionqueue stop"
  if failed host 127.0.0.1 port 8443
    then restart
  if 5 restarts within 5 cycles then timeout

How to setup and start M/Monit service

Boot init from init.d

  1. Register the service to start on boot
chkconfig monit on
  1. Start service
service monit start

Respawnning with inittab

  • Append /etc/inittab to add:
mo:2345:respawn:/usr/bin/monit -Ic /etc/monit.conf
  1. Start monit
init q
Retrieved from "http://wiki.bashlinux.com/index.php?title=Monit&oldid=987"