Highlights 1: Nagios principle:
1.nagios is an open source monitoring software, can realize the resources (service, service group, hosts, host groups, contacts, commands, etc.) to monitor and analyze the fault notification and recovery operation and maintenance personnel; support monitoring linux, windows and other hosts; nagios all detection and monitoring through the use of plug-ins are completed.
2. How it works: After nagios start, periodic calls plug-in automatically check the server status, nagios while maintaining a queue, all plug-in returns the state to enter the queue, each time nagios to start reading information from the queue, processed, and displayed the results of the state over the web .
3.nagios four states: 0 (ok) normal, 1 (warning) warning, 2 (critical) serious errors, 3 (unknown) unknown.
Highlights 2: nagios monitoring alarm usually by mail, and phone support, QQ, MSN and other
key content 3: how to configure nagios monitoring:
does not modify the original configuration, all custom configuration using additional manner.
nagios to complete the task:
what order, at what time monitoring of those hosts, service; who notice when things go wrong.
command.cfg (defined commands) -> contacts.cfg (contact) -> define the host and service configuration files (command calls, contacts, time period)
Highlights 4: Configure relationship between file:
Reproduced in: https: //blog.51cto.com/14386255/2406855