Shulou(Shulou.com)06/03 Report--

This article mainly introduces "how to deploy Nagios on RedHat6.5". In daily operation, I believe many people have doubts about how to deploy Nagios on RedHat6.5. The editor consulted all kinds of materials and sorted out simple and easy-to-use methods of operation. I hope it will be helpful to answer the doubts of "how to deploy Nagios on RedHat6.5"! Next, please follow the editor to study!

Deployment environment: system, RedHat 6.5; components, Nagios

Preparation before deployment: turn off Selinux and firewall (/ etc/init.d/iptables stop); get related software packages.

(including gd-devel mysql-server openssl-devel xinetd;, etc.)

Specific steps:

1. Create Nagios users and nagcmd groups on hosts where Nagios is running

Groupadd nagcmd

Useradd-M-d / usr/local/nagios-G nagcmd nagios

Usermod-G nagcmd apache

two。 Extract the corresponding source code package and plug-in package; and specify the compilation environment and parameters

Cd / guo

Tar jxf nagios-cn-3.2.3.tar.bz2

Cd nagios-cn-3.2.3

# specify that the compilation environment group is "ngcmd"

. / configure-- with-command-group=nagcmd

# start compiling and installing

Make all & & make install

# install startup script

Make install-init

# install WEB configuration file

Make install-webconf

# install configuration file

Make install-config

# set login username and password for Nagios

Htpasswd/usr/local/nagios/etc/htpasswd.users nagiosadmin

# check the correctness of configuration

/ usr/local/nagios/bin/nagios-v / usr/local/nagios/etc/nagios.cfg

Make sure there is no Error or warning.

3. Start related services and test

/ etc/init.d/nagios start

/ etc/init.d/httpd start

4. Install the relevant plug-ins.

Cd / guo

Tar zxf nagios-plugins-2.1.1.tar.gz

Cd nagios-plugins-2.1.1

. / configure

# after execution, make sure that the status after the required function shows "yes". For example, Mysql and ssl protocol encryption is used later; the result at least includes "--with-mysql:yes,--with-openssl:yes".

# plug-ins will be automatically installed to / usr/local/nagios/libexec

Cd / usr/local/nagios/libexec

# adjust and recurse all files in this directory

Chown nagios.nagios. -R

# check the configuration again

/ usr/local/nagios/bin/nagios-v / usr/local/nagios/etc/nagios.cfg

# reload Nagios configuration

/ etc/init.d/nagios reload

5. Edit the relevant configuration file.

Cd / usr/local/nagios/etc/objects/

Cp-p localhost.cfg hosts.cfg

Cp-p localhost.cfg services.cfg

Vim / usr/local/nagios/etc/objects/hosts.cfg

# add the following:

# specify the monitored host and its related information through the hosts.cfg file

Cfg_file=/usr/local/nagios/etc/objects/hosts.cfg

# define which services and resources to monitor through the services.cfg file.

Cfg_file=/usr/local/nagios/etc/objects/services.cfg

# vi hosts.cfg

Definehost {

Use linux-server

Host_name pu_tao.example.com

Alias Manager

Address 172.25.254.18

Icon_p_w_picpath server.gif

Statusmap_p_w_picpath server.gd2

2d_coords 500200

3d_coords 500200100

}

Define hostgroup {

Hostgroup_name linux-servers

Alias Linux Servers

Members *

}

This time, a monitored host is selected for the experiment, and only one service group is written.

Define servicegroup {

Servicegroup_name system load check

Alias load check

Members server2.example.com, total number of processes, server2.example.com user logins, server2.example.com, root partition, server2.example.com, swap space utilization

}

Monitor the situation of ping

Defineservice {

Use local-service

Host_name *

Service_description PING

Check_command checkpoints pingling 100.010% 500.060%

}

Monitor hard disk condition

Defineservice {

Use local-service

Host_name xi_gua.example.com

Service_description root partition

Check_command checkpoints localizations disk20% "10%" /

}

Monitor the number of logged-in users

Defineservice {

Use local-service

Host_name xi_gua.example.com

Number of service_description logged in users

Check_command check_local_users!20!50

}

Monitoring system load

Define service {

Use local-service

Host_name xi_gua.example.com

Service_description system load

Check_command check_local_load!5.0,4.0,3.0!10.0,6.0,4.0

}

Total number of monitoring processes

Defineservice {

Use local-service

Host_name xi_gua.example.com

Total number of service_description processes

Check_command check_local_procs!250!400!RSZDT

}

Monitor swap space utilization

Define service {

Use local-service

Host_name xi_gua.example.com

Service_description swap space utilization

Check_command check_local_swap!20!10

}

Monitor ssh condition

Define service {

Use local-service

Host_name xi_gua.example.com

Service_description SSH

Check_command check_tcp!22!1.0!10.0

Notifications_enabled 0

}

Monitoring apache

Defineservice {

Use local-service

Host_name xi_gua.example.com

Service_description HTTP

Check_command check_http

Notifications_enabled 0

}

/ usr/local/nagios/bin/nagios-v / usr/local/nagios/etc/nagios.cfg

/ etc/init.d/nagios reload

The picture shows that the monitoring of this machine is successful.

6. Turn on another mainframe. The host name of this experiment is xi_gua.example.com.ip:172.25.254.17;, which also turns off Selinux and firewall.

Install Mysql; on this machine and create a user Nagios and grant certain permissions.

Create database nagdb

Grant select on nagdb.* tonagios@172.25.254.18 identified by 'nagios'

Return the host pu_tao.example.com where the Nagios resides

Cd / usr/local/nagios/libexec

. / check_mysql-H 172.25.254.3-unagios-pnagios

Similar log information should be displayed after execution; if there are any errors, it means that the machine has successfully monitored the peer mysql.

Cd / usr/local/nagios/etc/objects

Add commands to monitor mysql in commands.cfg

# 'check_mysql' command definition

Definecommand {

Command_name check_mysql

Command_line $USER1 $/ check_mysql-H $HOSTADDRESS$-u $ARG1 $- p $ARG2 $

}

Add monitoring mysql to services.cfg

# # check_mysql

Define service {

Use local-service

Host_name xi_gua.example.com

Service_description MYSQL

Check_command check_mysql!nagios!nagios

Notifications_enabled 0

}

Add in hosts.cfg

Define host {

Use linux-server

Host_name xi_gua.example.com

Alias Manager

Parents xi_gua.example.com

Address 172.25.254.17

Icon_p_w_picpath server.gif

Statusmap_p_w_picpath server.gd2

2d_coords 400100

3d_coords 400100100

}

/ usr/local/nagios/bin/nagios-v / usr/local/nagios/etc/nagios.cfg

/ etc/init.d/nagios reload

The figure shows that the mysql on the server3 host was successfully detected.

8. Install Nrpe to enable nagios to monitor multiple hosts; operate on 172.25.254.17 (xi_gua.example.com).

# decompress related components and create nagios users

Tar zxfnrpe-2.15.tar.gz

Tar zxf nagios-plugins-2.1.1.tar.gz

Yum install mysql-devel openssl-devel-y

Useradd-M-d / usr/local/nagios nagios

Cd nagios-plugins-2.1.1

. / configure

Make all & & make install

Cd / usr/local/nagios/libexec/

Chown nagios.nagios. -R

Yum install xinetd

Cd / root/nrpe-2.15

. / configure

Make all & & make install

Make install-plugin

Make install-daemon

Make install-daemon-config

Make install-xinetd

Vim / etc/xinetd.d/nrpe

# set the monitoring host to 172.25.254.18

Only_from = 172.25.254.18

Vim / etc/services

Nrpe 5666/tcp

/ etc/init.d/xinetd start

Cd / usr/local/nagios/etc/

Vim nrpe.cfg

Change command [check _ hda1] = / usr/local/nagios/libexec/check_disk-w 20%-c 10%-p / dev/hda1 to

Command [check _ disk] = / usr/local/nagios/libexec/check_disk-w 20%-c 10%-p / # monitors the root partition

/ etc/init.d/xinetdrestart

Cd / usr/local/nagios/libexec/

Scp check_nrpe root@172.25.254.18:/usr/local/nagios/libexec/ remotely copies check_nrpe to the appropriate directory for pu_tao.exampl.com.

Return 172.25.254.18; do the following

Cd / usr/local/nagios/libexec/

Chown nagios.nagios check_nrpe

# check whether nrpe is available and successfully display the nrpe version number

. / chek_nrpe-H 172.25.254.17

Cd / usr/local/nagios/etc/objcts/

Command to add check_nrpe to commands.cfg

# 'check_nrpe' commanddefinition

Define command {

Command_name check_nrpe

Command_line $USER1 $/ check_nrpe-H $HOSTADDRESS$-c$ARG1 $

}

Add in services.cfg

Define service {

Use local-service

Host_name xi_gua.example.com

Service_description root partition

Check_command check_nrpe!check_disk

}

Define service {

Use local-service

Host_name xi_gua.example.com

Number of service_description logged in users

Check_command check_nrpe!check_users

}

Monitor root partition and logins

/ usr/local/nagios/bin/nagios-v/usr/local/nagios/etc/nagios.cfg

/ etc/init.d/nagios reload

As shown in the picture, the monitoring is successful.

110Cloud alarm of 9.nagios

Go to the onealter official website to download the software package used here

Alert-agent-4.1.3.1-linux-x64.tar.gz

Add nagios application to onealter web page

Get Application key

In the xi_gua.example.com host:

Tar zxf alert-agent-4.1.3.1-linux-x64.tar.gz

Cp-R alert-agent / usr/local/nagios/libexec/ # put the extracted package into the nagios plug-in directory

Cp alert-agent/plugin/nagios-plugin/nagios / usr/local/nagios/libexec/

Chmod + x / usr/local/nagios/libexec/nagios

Cp alert-agent/plugin/nagios-plugin/110monitor.cfg/usr/local/nagios/etc/objects/ # put 110 configuration files in the nagios configuration file directory

Add Key to the 110monitor.cfg file:

Modify / usr/local/nagios/etc/objects/contacts.cfg to add 110monitor to the default contact group

Define contactgroup {

Contactgroup_name admins

Alias Nagios Administrators

Members nagiosadmin,110monitor

}

Modify / usr/local/nagios/etc/nagios.cfg to add 110monitor.cfg to nagios.cfg

Cfg_file=/usr/local/nagios/etc/objects/110monitor.cfg

/ usr/local/nagios/bin/nagios-v / usr/local/nagios/etc/nagios.cfg

/ etc/init.d/nagios reload

At this point, the study on "how to deploy Nagios on RedHat6.5" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.