Centreon and Nagios on Centos 6.2

Centreon and Nagios on Centos 6.2

Centreon and Nagios on Centos 6.2 150 150 Roderick Derks

A complete guide step by step on howto install Centreon on Centos 6.2. This is worth some money guys.

 

Install Centos using the ks.cfg

yum update

yum install perl libstdc++.i686 sysstat rsync ntp -y
sed -i ‘s/acpi=off/acpi=on/g’ /boot/grub/grub.conf

ntpdate nl.pool.ntp.org
chkconfig –level 345 ntpd on
scp root@10.0.2.3:/etc/ntp.conf /etc/ntp.conf
service ntpd start

Install VMtools

mount /dev/cdrom /mnt
cd /tmp
tar xzf /mnt/VMwareTools-8.6.0-425873.tar.gz
cd vmware-tools-distrib/
./vmware-install.pl

Add REPO

cd /tmp
wget http://packages.sw.be/rpmforge-release/rpmforge-release-0.5.2-2.el6.rf.x86_64.rpm
rpm –import http://apt.sw.be/RPM-GPG-KEY.dag.txt
rpm -i rpmforge-release-0.5.2-2.el6.rf.*.rpm

PHP

yum install php -y
yum install php-pear -y
pear channel-update pear.php.net
pear upgrade-all

yum perl-CPAN -y

Prequisits

yum install libpng libpng-devel libjpg libjpg-devel
yum install php-soap.x86_64 -y

yum install perl-RRD-Simple perl-DBI perl-DBD-MySQL gd fontconfig-devel libjpeg-devel libpng-devel gd-devel perl-GD php php-mysql php-gd perl-DBI perl-DBD-MySQL gd fontconfig-devel libjpeg-devel libpng-devel gd-devel perl-GD rrdtool perl-rrdtool perl-Crypt-DES perl-Digest-SHA1 perl-Socket6 perl-IO-Socket-INET6 net-snmp net-snmp-libs php-snmp dmidecode lm_sensors perl-Net-SNMP net-snmp-perl perl-Digest-HMAC net-snmp-utils openssl-devel perl-DBD-MySQL mysql-server mysql-devel sudo php-ldap php-xml

yum install -y sendmail
service sendmail on
chkconfig –level 35 sendmail on

yum -y install gcc make kernel-devel

Download Nagios/Centreon/NDO software

wget http://sourceforge.net/projects/nagios/files/nagios-3.x/nagios-3.4.1/nagios-3.4.1.tar.gz/download
wget http://sourceforge.net/projects/nagios/files/ndoutils-1.x/ndoutils-1.5.2/ndoutils-1.5.2.tar.gz/download
Nagios plugins are already compiled and will be restored later.

Install some needed perl modules for the plugins

cpan Test::More
cpan ExtUtils::MakeMaker
cpan Perl::OSType

SNMPD

# cp /etc/snmp/snmpd.conf /etc/snmp/snmpd.conf.orig
# vi /etc/snmp/snmpd.conf
rocommunity public
syslocation R71 Datacenter
syscontact info@360viewpoint.nl
includeAllDisks 10%
# suppresses logging of connection attempts
dontLogTCPWrappersConnects 1

Suppressing SNMPD Logging
# vi /etc/sysconfig/snmpd
OPTIONS=”-LS 0-4 d -Lf /dev/null -p /var/run/snmpd.pid”

# service snmpd start

Install Nagios

tar xvzf nagios-3.4.1.tar.gz
cd nagios
adduser nagios
mkdir /usr/local/nagios
chown nagios:nagios /usr/local/nagios
grep “^User” /etc/httpd/conf/httpd.conf
/usr/sbin/groupadd nagcmd
/usr/sbin/usermod -G nagcmd apache
/usr/sbin/usermod -G nagcmd nagios
./configure –prefix=/usr/local/nagios –with-command-group=nagcmd
make all
make install
make install-init
make install-config
make install-webconf
chkconfig –add nagios
chkconfig –level 35 nagios on

mkdir -p /usr/local/nagios/var/rw
chown nagios:nagcmd /usr/local/nagios/var/rw
touch /usr/local/nagios/var/rw/nagios.cmd
chown nagios:nagcmd /usr/local/nagios/var/rw/nagios.cmd

# copy images
rsync -avu root@10.0.2.118:/usr/local/nagios/share/images/ /usr/local/nagios/share/images

Software en configuratiefiles overzetten

rsync -avu root@10.0.2.18:/root/centr* /root/
rsync -avu root@10.0.2.18:/root/nag* /root/
rsync -avu root@10.0.2.18:/etc/httpd/conf.d/* /etc/httpd/conf.d/
rsync -avu root@10.0.2.18:/var/www/php* /var/www/
rsync -avu root@10.0.2.18:/usr/local/weat* /usr/local/
rsync -avu root@10.0.2.18:/usr/local/mol* /usr/local/
rsync -avu root@10.0.2.18:/etc/init.d/ndo* /etc/init.d/

# Now the nagios config for Apache has been added
# Add First User and create htpasswd file:
mkdir /usr/local/nagios/etc/apache
htpasswd -c /usr/local/nagios/etc/apache/htpasswd.users nagiosadmin
# Add Second User and use existing htpasswd file:
htpasswd /usr/local/nagios/etc/apache/htpasswd.users roderick

Install NDO

cd /tmp
tar xvzf ndoutils-1.5.2.tar.gz
cd ndoutils-1.5.2
./configure –prefix=/usr/local/nagios/ –enable-mysql –disable-pgsql –with-ndo2db-user=nagios –with-ndo2db-group=nagios
make

chmod +x /etc/init.d/ndo2db
chkconfig –add ndo2db
chkconfig –level 345 ndo2db on

yum -y install mailx

MySQL

service mysqld start
chkconfig –level 345 mysqld on
/usr/bin/mysqladmin -u root password ‘root’

Install Centreon

visudo
#Defaults    requiretty

yum -y install mail
yum install php-mbstring
service httpd reload
mkdir /etc/cron.d

cd /tmp
wget http://download.centreon.com/index.php?id=181
tar centreon*.tar.gz
cd centreon-2.3.8
./install.sh -i

During install these paths are needed:

/usr/lib64/perl5/RRDs.pm
/usr/share/pear/PEAR.php
/usr/local/nagios/bin/ndomod.o

scp root@10.0.2.18:/etc/centreon/conf.pm /etc/centreon/
scp root@10.0.2.18:/usr/local/nagios/etc/ndo2db.cfg /usr/local/nagios/etc/ndo2db.cfg
scp root@10.0.2.18:/usr/local/nagios/etc/ndomod.cfg /usr/local/nagios/etc/ndomod.cfg

chmod 777 /usr/local/nagios/var
chmod 777 /usr/local/nagios/var/rw

mkdir /usr/local/nagios/libexec/360viewpoint
chown nagios:nagios /usr/local/nagios/libexec/360viewpoint
rsync -avu root@10.0.2.18:/usr/local/nagios/libexec/360viewpoint/* /usr/local/nagios/libexec/360viewpoint/

Apache adjustments

Configure apache and the files
yum install -y mod_ssl

Goto the website and configure Centreon
yum install -y php-posix
chown apache:apache /etc/centreon/conf.pm

Restore the Centreon files from backup.

API installation

Install WMI from Zenoss.

Install VMware Perl API:

yum install perl-XML-LibXML
yum install libuuid-devel
cd /tmp; wget http://search.cpan.org/CPAN/authors/id/C/CF/CFABER/UUID-0.03.tar.gz
tar xvzf UUID-0.03.tar.gz
cd UUID-0.03
perl Makefile.PL
make
make install
find /usr/ -name UUID.pm

Download the vSphere API like VMware-vSphere-Perl-SDK-5.0.0-615831.x86_64.tar.gz
export http_proxy=
export ftp_proxy=
./vmware-install.pl

/usr/bin/perl -MVMware::VIRuntime -e 'print $VMware::VIRuntime::VERSION' /usr/lib/vmware-vcli/apps/general/connect.pl --url https://10.0.2.31/sdk/webService 

Addd this line to the check_vmware_api.pl script to prevent the message: Server version unavailable at ‘https://esx01:443/sdk/vimService.wsdl’ at /usr/share/perl5/VMware/VICommon.pm line 545.:
$ENV{PERL_LWP_SSL_VERIFY_HOSTNAME} = 0;

Remove the API if needed: /usr/bin/vmware-uninstall-vSphere-CLI.pl 

Database restore

Backup the current centreon environment.

gunzip < backup/20120702154631.centreon.sql.gz | mysql -u root -proot centreon
gunzip < backup/20120702154631.centstorage.sql.gz | mysql -u root -proot centstorage

Testdrive

Export the nagios config from Centreon
chown -R apache:apache /usr/local/nagios/etc

Start Nagios and check plugins. Resultaat:

  1. Compileer de plugins van Nagios opnieuw.
  2. check_vmware_api.pl heeft nodig:
    cpan Nagios::Plugin
    cpan HTTP:Date
  3.  chmod 777 /usr/local/nagios/var/rw/nagios.cmd
  4. cpan Net:DNS voor check_iftrafic3.pl
  5. voor check_mysql_health
    cpan Time::HiRes
    scp /etc/freetds.conf root@10.0.2.18:/etc/
    en een nieuwe versie van check_mysql_health gecompileerd

Centreon Syslog server toevoeging

# vi /etc/rsyslog.conf

#RRD
$ModLoad MySQL
$AllowedSender UDP, 127.0.0.1, 10.0.0.0/8
$AllowedSender TCP, 127.0.0.1, 10.0.0.0/8
#RRD

#RRD
# Configuration changes for Windows/Snare/Centreon-E2S logs
$EscapeControlCharactersOnReceive off

$template sysMysql,"INSERT INTO logs (host,facility, priority,level,tag,datetime,program,msg) VALUES ('%HOSTNAME%','%syslogfacility%','%syslogpriority-text%','%syslogseverity-text%','%syslogtag%', '%timereported:::date-mysql%','%programname%', '%msg%')", SQL

*.* >127.0.0.1,syslog,syslogadmin,centreon;sysMysql

*.=notice;mail.*;\
       *.=crit;*.=err;\
       *.=warning >127.0.0.1,syslog,syslogadmin,centreon;sysMysql
#RRD

Roderick Derks

Liefhebber van fietsen, van het oplossen van IT puzzels, en van het delen van informatie om anderen te helpen.

All stories by:Roderick Derks

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