Showing posts with label nagios. Show all posts
Showing posts with label nagios. Show all posts

Sunday, February 17, 2013

Centreon Not Sending Notification Emails

Problem


After finally installing Centreon 2.4 on CentOS 6.3, all was up and running, one issue I had left. No email notifications were sent when a host was down although everything seemed to be correctly configured from the GUI (contacts, notification period, etc).

Looking at  /var/log/maillog gave no hints.
But checking /usr/local/nagios/var/nagios.log was helpful.
[1361058638] HOST NOTIFICATION: Supervisor;Centreon2;DOWN;host-notify-by-email;CRITICAL - 192.168.189.59: Host unreachable @ 192.168.189.36. rta nan, lost 100%
[1361058638] Warning: Attempting to execute the command "/usr/bin/printf "%b" "***** centreon Notification *****\n\nType:PROBLEM\nHost: Centreon2\nState: DOWN\nAddress: 192.168.189.59\nInfo: CRITICAL - 192.168.189.59: Host unreachable @ 192.168.189.36. rta nan, lost 100%\nDate/Time: 17-02-2013" |  -s "Host DOWN alert for Centreon2!" email@gmail.com" resulted in a return code of 127.  Make sure the script or binary you are trying to execute actually exists...

There is no command before the -s and the pipe. This results in email delivery failure.


Solution


This can be fixed from the GUI.
In Centreon go to Configuration -> Commands, select Notifications from the left.
Two commands need to be edited: host-notify-by-email and service-notify-by-email.
The string /bin/mail has to be inserted after the pipe. Then, export Nagios settings. Of course this fix implies that running /bin/mail from the command line results in successful email delivery.





Saturday, February 16, 2013

Installing Centreon 2.4 on CentOS 6.3 x64 - Step by Step - Part 2

This is the continuation of Installing Centreon 2.4 on CentOS 6.3 x64 - Step by Step

Preparing MySQL

## Add innodb_file_per_table=1 under the [mysqld] section in my.cnf
vim /etc/my.cnf

## then
service mysqld start
chkconfig mysqld on
# 

Installing Centreon

#
service httpd start
groupadd centreon
useradd -g centreon centreon
cd /usr/local/src/
wget http://download.centreon.com/index.php?id=4264

tar -zxf centreon-2.4.0.tar.gz
cd centreon-2.4.0
export PATH="$PATH:/usr/local/nagios/bin/"

# create an answer file with the following contents:
vim ./answer
#
And create the answer file with the following content:
## CentWeb: Web front Centreon for Nagios
PROCESS_CENTREON_WWW=1
## CentStorage: Log and charts archiving.
PROCESS_CENTSTORAGE=1
## CentCore: Distributed Monitoring engine.
PROCESS_CENTCORE=1
## CentPlugins: Centreon Plugins for nagios
PROCESS_CENTREON_PLUGINS=1
## CentTraps: Centreon Snmp traps process for nagios
PROCESS_CENTREON_SNMP_TRAPS=1

#####################################################################
## Begin: Default variables
#####################################################################
## Your default variables
## $BASE_DIR is the centreon source directory
LOG_DIR="$BASE_DIR/log"
LOG_FILE="$LOG_DIR/install_centreon.log"

## Don't change values above unless you perfectly understand
## what you are doing.
## Centreon temporary directory to work
TMP_DIR="/tmp/centreon-setup"
## default snmp config directory
SNMP_ETC="/etc/snmp/"
## a list of pear modules require by Centreon
PEAR_MODULES_LIST="pear.lst"
#####################################################################
## End: Default variables
##################################################################


#####################################################################
## Begin: Centreon preferences
#####################################################################
## Above variables are necessary to run a silent install
## Where you want to install Centreon (Centreon root directory)
INSTALL_DIR_CENTREON="/usr/local/centreon"
## Centreon log files directory
CENTREON_LOG="/usr/local/centreon/log"
## Centreon config files
CENTREON_ETC="/etc/centreon"
## Where is your Centreon binaries directory ?
CENTREON_BINDIR="/usr/local/centreon/bin"
## Where is your Centreon data informations directory ?
CENTREON_DATADIR="/usr/local/centreon/data"
## Centreon generation config directory
##  filesGeneration and filesUpload
## Where is your Centreon generation_files directory ?
CENTREON_GENDIR="/usr/local/centreon"
## libraries temporary files directory
## Where is your Centreon variable library directory ?
CENTREON_VARLIB="/var/lib/centreon"
## Where is your CentPlugins Traps binary?
CENTPLUGINSTRAPS_BINDIR="/usr/local/centreon/bin"
## Where is the RRD perl module installed [RRDs.pm]
## ATTENTION: ON x64 SYSTEMS THE PATH IS LIB64 INSTEAD OF LIB
##               vv
RRD_PERL="/usr/lib64/perl5"
## What is the Centreon group ?
CENTREON_GROUP="centreon"
## What is the Centreon user ?
CENTREON_USER="centreon"
## What is the Monitoring engine user ?
MONITORINGENGINE_USER="nagios"
## What is the Monitoring engine group ?
MONITORINGENGINE_GROUP="nagios"
## What is the Monitoring engine log directory ?
MONITORINGENGINE_LOG="/usr/local/nagios/var"
## Where is your monitoring plugins (libexec) directory ?
PLUGIN_DIR="/usr/local/nagios/libexec"
## Path to sudoers file (optional)
## Where is sudo configuration file
SUDO_FILE="/etc/sudoers"
## What is the Monitoring engine init.d script ?
MONITORINGENGINE_INIT_SCRIPT="/etc/init.d/nagios"
## What is the Monitoring engine binary ?
MONITORINGENGINE_BINARY="/usr/local/nagios/bin/nagios"
## What is the Monitoring engine configuration directory ?
MONITORINGENGINE_ETC="/usr/local/nagios/etc"
## Where is the configuration directory for broker module ?
BROKER_ETC="/usr/local/nagios/etc"
## Where is the init script for broker module daemon ?
BROKER_INIT_SCRIPT="/etc/init.d/ndo2db"
## Do you want me to configure your sudo ? (WARNING)
FORCE_SUDO_CONF=1

#####################################################################
## Begin: Apache preferences
#####################################################################
## Apache configuration directory (optional)
#DIR_APACHE="/etc/apache"
## Apache local specific configuration directory (optional)
## Do you want to update Centreon Apache sub configuration file ?
# DIR_APACHE_CONF="/etc/apache/conf.d"
## Apache configuration file. Only file name. (optional)
#APACHE_CONF="apache.conf"
## Apache user (optional)
WEB_USER="apache"
## Apache group (optional)
WEB_GROUP="apache"
## Force apache reload (optional): set APACHE_RELOAD to 1
## Do you want to reload your Apache ?
APACHE_RELOAD=1
#####################################################################
## End: Apache preferences
#####################################################################


## Do you want me to install/upgrade your PEAR modules
PEAR_AUTOINST=1
## Centreon run dir (all .pid, .run, .lock)
## Where is your Centreon Run Dir directory?
CENTREON_RUNDIR="/var/run/centreon"

## path to centstorage binary
## Where is your CentStorage binary directory
CENTSTORAGE_BINDIR="/usr/local/centreon/bin"
## CentStorage RRDs directory (where .rrd files go)
## Where is your CentStorage RRD directory
CENTSTORAGE_RRD="/var/lib/centreon"
## Do you want me to install CentStorage init script ?
CENTSTORAGE_INSTALL_INIT=1
## Do you want me to install CentStorage run level ?
CENTSTORAGE_INSTALL_RUNLVL=1


## path to centcore binary
CENTCORE_BINDIR="usr/local/centreon/bin"
## force install init script (install in init.d)
## Set to "1" to enable
## Do you want me to install CentCore init script ?
CENTCORE_INSTALL_INIT=1
## force install run level for init script (add all link on rcX.d)
## Set to "1" to enable
## Do you want me to install CentCore run level
CENTCORE_INSTALL_RUNLVL=1

## Some plugins require temporary datas to process output.
## These temp datas are store in the CENTPLUGINS_TMP path.
## Where is your CentPlugins lib directory
CENTPLUGINS_TMP="/var/lib/centreon/centplugins"

## path for snmptt installation
SNMPTT_BINDIR="/usr/local/centreon/bin/"
## What is the Broker user ? (optional)
BROKER_USER=$MONITORINGENGINE_USER

## Nagios user (optional)
NAGIOS_USER="nagios"
## Nagios group (optional)
NAGIOS_GROUP="nagios"
## Centreon Connector PATH
## Mail (optional)
BIN_MAIL="/bin/mail"
## 
Save the file and you're ready to install.
# install using the answer file
./install.sh -f ./answer

# After installation configure SELinux
yum -y install policycoreutils-python
semanage fcontext -a -t httpd_sys_rw_content_t "/usr/local/centreon(/.*)?"
restorecon -R /usr/local/centreon/
semanage fcontext -a -t httpd_sys_rw_content_t "/etc/centreon(/.*)?"
restorecon -R /etc/centreon
semanage fcontext -a -t httpd_sys_rw_content_t "/usr/local/nagios/var/spool(/.*)?"
semanage fcontext -a -t httpd_sys_content_t "/usr/local/nagios/share(/.*)?"
restorecon -R /usr/local/nagios/
semanage fcontext -a -t httpd_sys_content_t "/usr/share/php(/.*)?"
restorecon -R /usr/share/php
semanage fcontext -a -t httpd_sys_content_t "/usr/share/pear(/.*)?"
restorecon -R /usr/share/pear

# Restart some services
service httpd restart
service ndo2db restart
service nagios restart
#

When the installation is finished, open http://server/centreon/ in the browser.

Next, Next




At the third page:

  • Nagios directory: /usr/local/nagios/
  • Nagiostats binary: /usr/local/nagios/bin/nagiostats
  • Nagios image directory: /usr/local/nagios/share/images

At the forth page:
  • Broker Module: ndoutils
  • Ndomod binary (ndomod.o): /usr/local/nagios/bin/ndomod.o

At the fifth page enter the details of the admin user.


At the 6th page you have to specify the db details. By default the mysql root password is blank.


After finishing the setup there'll be something wrong with the db so you'll have to go back to the shell to grant permissions for the centreon db user.


#
mysql -e "grant all on centreon.* to 'centreon'@localhost identified by 'CentreonDBPassword';"
mysql -e "grant all on centreon_storage.* to 'centreon'@localhost identified by 'CentreonDBPassword'"
mysql -e "grant all on centreon_status.* to 'centreon'@localhost identified by 'CentreonDBPassword';"
#

Friday, February 15, 2013

Error compiling Nagios-Plugins-1.4.16 on CentOS 6.3

System

  • Centos 6.3
  • Nagios-Plugins-1.4.16

Problem


After running the follwing commands to compile nagions-plugins
cd /usr/local/src
wget http://sourceforge.net/projects/nagiosplug/files/nagiosplug/1.4.16/nagios-plugins-1.4.16.tar.gz/download
tar -xzf nagios-plugins-1.4.16.tar.gz
cd nagios-plugins-1.4.16
./configure --with-nagios-user=nagios --with-nagios-group=nagios --with-openssl=/usr/bin/openssl --enable-perl-modules
make

Make crashes at the end with the following error:
Can't locate ExtUtils/MakeMaker.pm in @INC (@INC contains: /usr/local/lib64/perl5 /usr/local/share/perl5 /usr/lib64/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib64/perl5 /usr/share/perl5 .) at Makefile.PL line 11.
BEGIN failed--compilation aborted at Makefile.PL line 11.
Can't run perl Makefile.PL at ../tools/build_perl_modules line 68.
make[2]: *** [all-local] Error 2
make[2]: Leaving directory `/usr/local/src/nagios-plugins-1.4.16/perlmods'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/usr/local/src/nagios-plugins-1.4.16'
make: *** [all] Error 2

Solution


The package ExtUtils-MakeMaker has to be installed first. Additionally, perl-devel is also needed to compile it. Then, reconfigure nagios-plugins.


# install perl-devel
yum -y install perl-devel

# install ExtUtils-MakeMaker
cd /usr/local/src
wget http://search.cpan.org/CPAN/authors/id/M/MS/MSCHWERN/ExtUtils-MakeMaker-6.64.tar.gz
tar -xzf ExtUtils-MakeMaker-6.64.tar.gz
cd ExtUtils-MakeMaker-6.64
perl Makefile.PL
make
make install

# now reconfigure nagios-plugins
cd /usr/local/src
cd nagios-plugins-1.4.16
./configure --with-nagios-user=nagios --with-nagios-group=nagios --with-openssl=/usr/bin/openssl --enable-perl-modules
make
make install



You may want to check out my blog post on Installing Centreon 2.4 on CentOS 6.3 x64.

Installing Centreon 2.4 on CentOS 6.3 x64 - Step by Step

Scope


In this no-brainer guide I am going to detail how to install Centreon on a brand new CentOS 6.3 x64 machine.
Components:
  • CentOS 6.3 x64 (this)
  • Nagios Core 3.4.4 (this)
  • Nagios Plugins 1.4.16 (this)
  • Centreon 2.4 (this)

Prerequisites


  • CentOS is installed in text-mode using the CentOS-6.3-x86_64-LiveCD.iso image on a VirtualBox VM in my case
  • Firewall ports 22 and 80 have been opened by the configuration tool
  • Default services have been installed + sshd
  • I consciously don't start the with yum update/upgrade so the expected result should be as much the same as possible

# install RPMForge
# for details visit this website: http://wiki.centos.org/AdditionalResources/Repositories/RPMForge
rpm --import http://apt.sw.be/RPM-GPG-KEY.dag.txt

uname -i
# for me 'x86_64' is the result so I'll choose the x86_64 version
wget -N http://packages.sw.be/rpmforge-release/rpmforge-release-0.5.2-2.el6.rf.x86_64.rpm
rpm -i rpmforge-release-0.5.2-2.el6.rf.*.rpm


# Installing Apache2 + PHP
yum -y install httpd php php-mysql php-gd
usermod -U apache
chkconfig httpd on
# Set your timezone in php.ini to get rid of an ugly warinng in the future.
# find date.timezone at the [date] section, uncomment and set it. for me it's Europe/Bucharest
# date.timezone = Europe/Bucharest
# find yours here: http://www.vmware.com/support/developer/vc-sdk/visdk400pubs/ReferenceGuide/timezone.html
vim /etc/php.ini
#
# Add port 80 to Firewall
sudo iptables -I INPUT -p tcp --dport 80 -j ACCEPT 
sudo service iptables save


# Installing GD modules
yum -y install gd fontconfig-devel libjpeg-devel libpng-devel gd-devel perl-GD

# Installing MySQL
yum -y install openssl-devel perl-DBD-MySQL mysql-server mysql-devel

# Installing PHP Dependencies
yum -y install php-ldap php-xml php-mbstring

# Installing DBI modules
yum -y install perl-DBI perl-DBD-MySQL

# Installing PERL modules
yum -y install perl-Config-IniFiles

# Installing RRDTools
yum -y install rrdtool perl-rrdtool

# Installing SNMP
yum -y install perl-Crypt-DES perl-Digest-SHA1 perl-Digest-HMAC net-snmp-utils
yum -y install perl-Socket6 perl-IO-Socket-INET6 net-snmp net-snmp-libs php-snmp dmidecode lm_sensors perl-Net-SNMP net-snmp-perl

# Misc
yum -y install fping cpp gcc gcc-c++ libstdc++ glib2-devel
# Make is not included on cent-os by default
yum -y install make

# PEAR
yum -y install php-pear
pear channel-update pear.php.net 
# for those who have a web proxy
# pear config-set http_proxy http://my_proxy.com:port 
pear upgrade-all


# add the line rocommunity public 127.0.0.1/32 to snmpd.conf
sed -i '$ a\rocommunity public 127.0.0.1/32' /etc/snmp/snmpd.conf
service snmpd start
chkconfig snmpd on
# enabling NTP couldn't hurt
chkconfig ntpd on 
ntpdate pool.ntp.org 
service ntpd start
# 


Installing Nagios


# Creating the nagios user
/usr/sbin/useradd -m nagios
/usr/sbin/usermod -L nagios

# Creating a group to be able to use external commands
/usr/sbin/groupadd nagcmd
/usr/sbin/usermod -G nagios,nagcmd nagios
/usr/sbin/usermod -G nagios,nagcmd apache

# Download & Compile
cd /usr/local/src/
wget -N http://prdownloads.sourceforge.net/sourceforge/nagios/nagios-3.4.4.tar.gz
tar -xzf nagios-3.4.4.tar.gz
cd nagios

./configure --prefix=/usr/local/nagios --with-command-group=nagcmd --enable-nanosleep --enable-event-broker
make all
make install
make install-init
make install-commandmode
make install-config
chkconfig nagios on
service nagios start
#



Compiling Nagios Plugins


#
cd /usr/local/src
wget -N http://sourceforge.net/projects/nagiosplug/files/nagiosplug/1.4.16/nagios-plugins-1.4.16.tar.gz/download

yum -y install fping openssl-devel openldap-devel postgresql-devel radiusclient-ng-devel samba-client libsmbclient

yum -y install perl-devel
cd /usr/local/src
wget -N http://search.cpan.org/CPAN/authors/id/M/MS/MSCHWERN/ExtUtils-MakeMaker-6.64.tar.gz
tar -xzf ExtUtils-MakeMaker-6.64.tar.gz
cd ExtUtils-MakeMaker-6.64
perl Makefile.PL
make
make install

cd /usr/local/src
tar -xzf nagios-plugins-1.4.16.tar.gz
cd nagios-plugins-1.4.16
./configure --with-nagios-user=nagios --with-nagios-group=nagios --with-openssl=/usr/bin/openssl --enable-perl-modules
make

# Test-Simple-0.70 fails to compile otherwise so have to do it manually first
cd ./perlmods/Test-Simple-0.70
perl Makefile.PL
make
make install

# go back to nagios-plugins to make install
cd ../..
make install
# 

Installing NDOutils

#
cd /usr/local/src
wget -N http://sourceforge.net/projects/nagios/files/ndoutils-1.x/ndoutils-1.5.2/ndoutils-1.5.2.tar.gz/download
tar -zxvf ndoutils-1.5.2.tar.gz
cd ndoutils-1.5.2

# get the patch and apply it; wget to same folder as ndoutils
wget -N http://svn.centreon.com/trunk/ndoutils-patch/ndoutils1.5.2_light.patch
yum -y install patch
patch -p1 -N < ndoutils1.5.2_light.patch

# continue installation
./configure --prefix=/usr/local/nagios/ --enable-mysql --with-ndo2db-user=nagios --with-ndo2db-group=nagios
make


# After creating the binaries and libraries they have to be copied
cp -f ./src/ndomod-3x.o /usr/local/nagios/bin/ndomod.o
cp -f ./src/ndo2db-3x /usr/local/nagios/bin/ndo2db
cp -f ./config/ndo2db.cfg-sample /usr/local/nagios/etc/ndo2db.cfg
cp -f ./config/ndomod.cfg-sample /usr/local/nagios/etc/ndomod.cfg
sudo chmod 774 /usr/local/nagios/bin/ndo*
sudo chown nagios:nagios /usr/local/nagios/bin/ndo*

# make ndo2db daemon autorun
cp -f ./daemon-init /etc/init.d/ndo2db
chmod +x /etc/init.d/ndo2db
chkconfig ndo2db on
#

Click here for Part 2

Monday, October 1, 2012

Graph icons not showing up in Centreon

Ubuntu Server 12.04 x64
Nagois 3.4.1
Centreon 2.3.9
Nagios-Plugins 1.4.16
NDOUtils-1.5.2

I followed this excellent guide to install Nagios + Centreon from the ground.

After completing all steps and adding some Windows hosts to Centreon, the graph icons did not show up although I configured graphing at the service properties (except for ping).



Checking the logs revealed that in fact my db username was incorrect (it was Centreon instead of ndouser).

tail -n 5 /usr/local/centreon/log/centstorage.log

2012-10-01 16:37:49 - Error when connecting to database : Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)
2012-10-01 16:37:51 - Error when connecting to database : Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)
2012-10-01 16:37:53 - Error when connecting to database : Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)
2012-10-01 16:37:55 - Error when connecting to database : Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)
2012-10-01 16:37:57 - Error when connecting to database : Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)


so I opened up ndo2db.cfg to correct the credentials then restarted Centreon.

sudo vim /usr/local/nagios/etc/ndo2db.cfg

Thursday, September 6, 2012

Compiling nagios-plugins-1.4.16 throws an error

I was installing Nagios on a new Ubuntu Server following this guide, but using the latest versions (Nagios 3.4.1 and Nagios Plugins 1.4.15).

Running make on the Nagios Plugins threw me the following error:
....
 check_http.c:312:9: error: ‘ssl_version’ undeclared (first use in this function)
....
make[2]: *** [check_http.o] Error 1
make[2]: Leaving directory `/home/nicadmin/nagios-plugins-1.4.16/plugins'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/home/nicadmin/nagios-plugins-1.4.16'
make: *** [all] Error 2


A workaround is installing the libssl-dev package and reconfiguring.
root@host1:~/nagios-plugins-1.4.16# apt-get install libssl-dev
root@host1:~/nagios-plugins-1.4.16# ./configure --with-nagios-user=nagios --with-nagios-group=nagios
root@host1:~/nagios-plugins-1.4.16# make
root@host1:~/nagios-plugins-1.4.16# make install


Source: http://sourceforge.net/mailarchive/forum.php?thread_name=0957CCC9-6B31-4081-ADF1-D04F00212EC4%40gmail.com&forum_name=nagiosplug-devel