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monit is a utility for managing and monitoring, processes, files, directories and filesystems on a UNIX system. Monit conducts automatic maintenance and repair and can execute meaningful causal actions in error situations.

Admin note: Doing source on this, RPM Repos have older versions.

Pre Install Step:

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yum install openssl*

Step 1: Installing monit from Source

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cd /usr/local/src
wget http://mmonit.com/monit/dist/monit-5.0.3.tar.gz
tar -zxvf monit-5.0.3.tar.gz
cd monit-5.0.3
./configure --sysconfdir=/etc/monit/
make && make install

Step 1.1: Cleanup source files after working install

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rm -Rf /usr/local/src/monit* && cd

Step 2: Create Monit config file

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mkdir /etc/monit/
mkdir /etc/monit/cfg
cd /etc/monit/
nano -w /etc/monit/monitrc

Step 2.1: Paste in this text

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set daemon  60
set logfile /var/log/monit.log
set mailserver localhost
set alert change@me.net

# Set mail notification options:

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mail-format {
   from: monit@changeme.net
   subject: $SERVICE $EVENT at $DATE
   message: Monit $ACTION $SERVICE at $DATE on $HOST,

   Yours sincerely,
   AI
   }

## Inbuilt httpd

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set httpd port 3500 and
     allow admin:monit


## httpd access control

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allow localhost       
#allow 10.0.0.10

# Put your Service config in /etc/monit/cfg/, They will be included.

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include /etc/monit/cfg/*

* REMEMBER to change username and password in above config file *

Step 2.2: chmod config file to root only

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chmod 700 /etc/monit/monitrc

Step 3: Creating Log file

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touch /var/log/monit.log

Step 4: Making monit run as a service

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cd /etc/init.d/
wget --output-document=monit http://www.securecentos.com/temp/files/monit/monit.d
chmod +x /etc/init.d/monit
chkconfig --levels 235 monit on


Step 5: Optional config files for different services:

System state cfg:

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wget --output-document=/etc/monit/cfg/system.cfg http://www.securecentos.com/get/monit/system.cfg

SSHD cfg:

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wget --output-document=/etc/monit/cfg/sshd.cfg http://www.securecentos.com/get/monit/sshd.cfg

Apache2 Web server cfg:

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wget --output-document=/etc/monit/cfg/apache2.cfg http://www.securecentos.com/get/monit/apache2.cfg

MySQLd SQL server cfg:

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wget --output-document=/etc/monit/cfg/mysqld.cfg http://www.securecentos.com/get/monit/mysqld.cfg