Why installed nagios plugins doesnt work?

[Jessuzz94]

Where nagios 4 installed the plugins are in /usr/local/nagios/libexec dont?, i tried to test some services to monitor, for example, check_disk, check_mrtg, check_icmp, check_dhcp... and anyone works, i mean, when i tried to restart nagios to save the new configuration it fails.

When i put the command "systemctl status nagios.service it trhows me:

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Failed to start LSB: Starts and stops the Nagios monitoring server.

Why i cant monitor the services?

Thanks!

[lmiltchev]

How did you install nagios - from repo, source? What is the distro/architecture of the system that you installed nagios on? Run the following commands and show the output:

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sestatus
uname -a
cat /etc/*release

[Jessuzz94]

sestatus:

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[nagios@localhost ~]$ 
SELinux status:                 enabled
SELinuxfs mount:                /sys/fs/selinux
SELinux root directory:         /etc/selinux
Loaded policy name:             targeted
Current mode:                   permissive
Mode from config file:          permissive
Policy MLS status:              enabled
Policy deny_unknown status:     allowed
Max kernel policy version:      28

uname -a

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Linux localhost.localdomain 3.10.0-229.7.2.el7.x86_64 #1 SMP Tue Jun 23 22:06:11 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

cat /etc/*release

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CentOS Linux release 7.1.1503 (Core)
NAME="CentOS Linux"
VERSION="7 (Core)"
ID="centos"
ID_LIKE="rhel fedora"
VERSION_ID="7"
PRETTY_NAME="CentOS Linux 7 (Core)"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:centos:centos:7"
HOME_URL="https://www.centos.org/"
BUG_REPORT_URL="https://bugs.centos.org/"

CENTOS_MANTISBT_PROJECT="CentOS-7"
CENTOS_MANTISBT_PROJECT_VERSION="7"
REDHAT_SUPPORT_PRODUCT="centos"
REDHAT_SUPPORT_PRODUCT_VERSION="7"

CentOS Linux release 7.1.1503 (Core)
CentOS Linux release 7.1.1503 (Core)

[Jessuzz94]

Well.. i installed nagios like all tutorials, download the nagios-4.0.8, ./configure, make all, make install, make install-init.. etc

[jolson]

Below are some full install instructions verified as working on CentOS 7 - if you're having problems, it may be worth recompiling with the below instructions (I tested them in-house):

Start with a minimal base install or you may run into problems with the below procedure.

Please ensure that SELinux is disabled on the target system:

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sestatus

Install all pre-requisite packages:

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yum install -y wget httpd php gcc glibc glibc-common gd gd-devel make net-snmp unzip automake

Change to the tmp directory, and download Nagios Core and Nagios Plugins:

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cd /tmp
wget https://github.com/NagiosEnterprises/nagioscore/archive/master.tar.gz -O nagioscore.tar.gz
wget https://github.com/nagios-plugins/nagios-plugins/archive/master.tar.gz -O nagiosplugins.tar.gz

Add the appropriate user and group for the Nagios process (we recommend 'nagios' and 'nagcmd'), and assign nagios+apache to the nagcmd group:

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useradd nagios
groupadd nagcmd
usermod -a -G nagcmd nagios
usermod -a -G nagcmd apache

Run the following commands to unpack the Nagios Core and Nagios Plugins source code into tmp:

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tar xzf nagioscore.tar.gz
tar xzf nagiosplugins.tar.gz
cd nagioscore-master

Run the configure command to get the source code ready for compilation:

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

Compile and install:

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make all
make install
make install-init
make install-config
make install-commandmode
make install-webconf

Complete the installation:

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cp -R contrib/eventhandlers /usr/local/nagios/libexec
chown -R nagios:nagios /usr/local/nagios/libexec/eventhandlers

Run the Nagios verification command to ensure the install completed properly, and start Nagios:

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/usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg
/etc/init.d/nagios start

Add a default user for web interface access, and start apache (we recommend calling the user 'nagiosadmin'):

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htpasswd -c /usr/local/nagios/etc/htpasswd.users nagiosadmin
systemctl start httpd

Change to the Nagios Plugins directory to compile and install the plugins:

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cd /tmp/nagios-plugins-master/
./tools/setup
./configure --with-nagios-user=nagios --with-nagios-group=nagios
make
make install

Register the Nagios service and Apache to be run upon system startup:

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chkconfig --add nagios
chkconfig --level 35 nagios on
systemctl enable httpd

That should be all that is required. You could check your command history against the commands that I've listed here - or recompile completely if you'd like.

[Jessuzz94]

This is a more completely install of nagios?, i see that is little different that my installation

[hsmith]

This is a more completely install of nagios?, i see that is little different that my installation

These are the instructions that you'll want to follow.

If you want to post the ones that you followed we can analyze them and see what may have went wrong, but I would just follow what jolson said to do.

[Jessuzz94]

Ok, im starting doing the steps

[jolson]

Sounds good - let us know how it works out.

[Jessuzz94]

I did it, it doesnt work, it shows me the same thing:

Error: Could not bind socket to interface eth0. Check your privileges

nagios changed from version 4.0.8 to 4.1.0