Nagios Introduction and principles

1. about Nagios

1. The difference from cacti

a) Cacti

1.Cacti More emphasis on intuitive data monitoring, easy to generate graphics, used to monitor network traffic,CPU utilization, hard disk usage, etc. can be said to be very suitable but

2. monitoring data via SNMP

3. Presentation Tools

4. add modules to monitor with plugins

b) Nagios

1. More focus on the monitoring of the host and service, and have a very strong ability to send alarm information

2. More monitoring methods

3. Configure a flexible monitoring tool

4. scripting and agent monitoring

2. Monitoring Objects

a) host, host group: server, virtual machine, network device

b) Services / resources, service groups:http service,MySQL service,CPU Resources, hard disks, memory resources

c) contact person, contact Group: Administrator

d) period: Time range

e) command: Monitor a template for an object

Use different steps for different monitoring objects

Different steps may also be used for the same monitoring object

3. main functions

Network Service monitoring (, pop3 http nntp icmp SNMP ftp ssh )

Host resource monitoring (CPU load,disk usage,system logs), also including Windows Host (using nsclient++ Plugin )

You can specify the Plugin you write to collect data over the network to monitor any situation (temperature, warning ...). )

Scripts can be executed remotely by configuring the Nagios remote execution plug-in

ssh Span style= "font-family: ' italics ';" > or ssl plus channel mode for monitoring

  simple design allows users to easily develop their own required inspection services, supporting many development languages ( shell scripts c++ perl ruby python php c#

Contains many graphical data Plugins(nagiosgraph,nagiosgrapher, Pnp4nagios , etc.)

Parallel service Check Available

&n

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Nagios Introduction and principles