Difference between revisions of "Website:Monitoring services"

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(New page: = Overview = Load-balancing and automatic failover mechanisms are essential components of a high-availability system. Equally important is efficient detection of failing services and ser...)
 
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Monit is simple to install.
 
Monit is simple to install.
  
  cd ~/build
+
  todd> cd ~/build
  tar xzf ../src/monit*.tar.gz
+
  todd> tar xzf ../src/monit*.tar.gz
  cd monit*
+
  todd> cd monit*
  ./configure
+
  todd> ./configure
  make
+
  todd> make
  sudo make install
+
  todd> sudo make install
  
 
= Configuring monit =
 
= Configuring monit =
  
 
monit uses a fun free-text configuration file-format.  Multiple instances of monit can be launched, each pointing to its own configuration file.
 
monit uses a fun free-text configuration file-format.  Multiple instances of monit can be launched, each pointing to its own configuration file.
 +
 +
monit configuration files live at:
 +
/usr/local/wb/admin/conf/monit
 +
 +
== Test the monit configuration file ==
 +
 +
todd> monit -t -c /path/to/monitrc
 +
 +
= Starting and stopping monit =
 +
 +
Start monit by:
 +
 +
todd> monit -c /path/to/monitrc
 +
 +
Stop monit by:
 +
 +
todd> monit -c /path/to/monitrc quit
 +
 +
= Configuring the system to run monit under init =
 +
 +
We configure monit to run under init. To do this edit /etc/inittab with entries for each of the WormBase monitrc files:
 +
 +
  todd> sudo nano /etc/inittab
 +
 +
  // Add the following line as an example
 +
mo:2345:respawn:/usr/local/bin/monit -Ic /home/todd/monitrc
 +
 +
Force init to re-read the configuration file by
 +
 +
todd> sudo /sbin/telinit q

Revision as of 15:08, 3 October 2007

Overview

Load-balancing and automatic failover mechanisms are essential components of a high-availability system. Equally important is efficient detection of failing services and servers that may not fall under the auspices of the failover protocol. This may include monitoring the size of log files, the amount of disk space available, memory race conditions, and the availaibility of secondary services.

We use monit at WormBase to handle these tasks and more.

Installing monit

Monit is simple to install.

todd> cd ~/build
todd> tar xzf ../src/monit*.tar.gz
todd> cd monit*
todd> ./configure
todd> make
todd> sudo make install

Configuring monit

monit uses a fun free-text configuration file-format. Multiple instances of monit can be launched, each pointing to its own configuration file.

monit configuration files live at:

/usr/local/wb/admin/conf/monit

Test the monit configuration file

todd> monit -t -c /path/to/monitrc

Starting and stopping monit

Start monit by:

todd> monit -c /path/to/monitrc

Stop monit by:

todd> monit -c /path/to/monitrc quit

Configuring the system to run monit under init

We configure monit to run under init. To do this edit /etc/inittab with entries for each of the WormBase monitrc files:

 todd> sudo nano /etc/inittab
 // Add the following line as an example
mo:2345:respawn:/usr/local/bin/monit -Ic /home/todd/monitrc

Force init to re-read the configuration file by

todd> sudo /sbin/telinit q