Nagios Client Installation steps in Linux and problems encountered

Software and plugins to be installed

Server A nagios-3.2.3,nagios-cn-3.2.3 Chinese version of nagios-plugins-1.4.15

Client Server B nrpe-2.12;nagios-plugins-1.4.15

First step: Create accounts and Groups first (note: First confirm that there are no accounts and groups, if not, you need to create, if not create subsequent cannot continue)

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Step Two: Upload the installation package nrpe-2.12;nagios-plugins-1.4.15 to client B and unzip it in the/USR/LOCAL/SRC.

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Unable to compile when installing nagios-plugins-1.4.15

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So you need to install the build environment gcc.

Yum install-y phpgcc glibc glibc-common gd gd-devel

Compile and install after installation

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unable to compile and install properly when installing nrpe-2.12

Tips "Checking for SSL headers ... configure:error:Cannot find SSL headers"

The reason is missing Openssl-devel package, yum-y install openssl-devel problem solving

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Step three: Configure NRPE

Modifying the /etc/xinetd.d/nrpe configuration file

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# Note : After only_from , the client above the configuration file adds server-side a IP, whereas the server adds the IP of client B , separated by a space in the middle }

Fourth step: Add a service port

Modify the /etc/services service file to add a service port

# at the end of the file, if you do not add a port,Nrpe will not function properly

Nrpe 5666/tcp #nrpe

Nrep is a xinetd based service, so just turn on the xinetd service .

[Email protected]~]#/etc/init.d/xinetd Restart

[[Email protected]~]# Netstat-na | grep 5666

issue: Unable to detect port 5666 after installation.

Problem solving:1, check whether XINETD service is turned on

No, and cannot be turned on. Cause: The XINETD service is not installed. Installing the XINETD service solves the problem

Yum install-y "xinetd*"

2, start the XINETD service.

Service xinetd Resstart

Fifth, configure the appropriate monitoring project on the server side and the client

1. Service Side

In/usr/local/nagios/etc/objects/

COMMANDS.CFG # Command configuration file

CONTACTS.CFG # Contact configuration file

TIMEPERIODS.CFG # time period configuration file

Templates.cfg # Template configuration file

CONTACTGROUPS.CFG # Add Contact Group definition file

HOSTS.CFG # Increase the host configuration file

HOSTGROUPS.CFG # Increase host group configuration file

SERVICES.CFG # Add a service configuration file

SERVICEGROUPS.CFG # Add a service group configuration file

Configure the appropriate data in Commands.cfg, Hosts.cfg, Hostgroups.cfg, services.cfg, and Servicegroups.cfg

2. Client Configuration

Modify /usr/local/nagios/etc/nrpe adding monitoring entries

As follows

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And then you can have a good surveillance.

Nagios Client Installation steps in Linux and problems encountered