Installation et configuration de NDOutils à partir du tarball sur Ubuntu Serveur 8.04 LTS

NDOutils b7,b8

NDOutils a le grand avantage d’écrire tous les événements dans une base de données MySQL à la place de fichiers à plat. Cet avantage permet de faire fonctionner plusieurs autres addons, comme nagvis qui permet de faire des maps représentants visuellement les serveurs et leurs états.

    Installation des dépendances
apt-get install mysql-server-5.0 mysql-client libmysql++-dev php5-mysql libmysqlclient15-dev
root:nagiosadmin
    Compilation et installation à partir du tarball
wget http://prdownloads.sourceforge.net/sourceforge/nagios/ndoutils-1.4b7.tar.gz
tar xzf ndoutils-1.4b7.tar.gz
cd ndoutils-1.4b7/
./configure --disable-pgsql --with-mysql-lib=/usr/lib/mysql --with-ndo2db-user=nagios 
--with-ndo2db-group=nagcmd
make

On copie à la main les fichiers ndo et on rattrape les droits

cp src/ndomod-3x.o /usr/local/nagios/bin/ndomod.o
cp src/ndo2db-3x /usr/local/nagios/bin/ndo2db
chown nagios:nagcmd /usr/local/nagios/bin/ndo*
chmod 774 /usr/local/nagios/bin/ndo*

Création de la base, de l’utilisateur, et des droits

mysqladmin -u root -p create ndo
mysql -u root -p mysql
GRANT ALL ON ndo.* TO ndouser@localhost IDENTIFIED BY 'ndopassword';
FLUSH PRIVILEGES;
exit

Écriture des tables dans la base et rattrapage des fichiers de configurations

cd db/
./installdb -u ndouser -p ndopassword -h localhost -d ndo
cd ..
cp config/ndomod.cfg /usr/local/nagios/etc/
cp config/ndo2db.cfg /usr/local/nagios/etc/
chown nagios:nagcmd /usr/local/nagios/etc/ndo*

Édition de la configuration du module NDO

nano /usr/local/nagios/etc/ndomod.cfg

Vérification des parametres de configuration

instance_name=Central
output_type=unixsocket
output=/usr/local/nagios/var/ndo.sock
tcp_port=5668
output_buffer_items=5000
buffer_file=/usr/local/nagios/var/ndomod.tmp

Édition de la configuration de la base de données NDO

nano /usr/local/nagios/etc/ndo2db.cfg

Vérification des paramètres de configuration

ndo2db_user=nagios
ndo2db_group=nagcmd
socket_type=unix
socket_port=5668
db_servertype=mysql
db_host=localhost
db_name=ndo
db_port=3306
db_prefix=nagios_
db_user=ndouser
db_pass=ndopassword

On redirige les sorties de nagios dans la base de données

nano /usr/local/nagios/etc/nagios.cfg

En y ajoutant

event_broker_options=-1
broker_module=/usr/local/nagios/bin/ndomod.o config_file=/usr/local/nagios/etc/ndomod.cfg

On crée le fichier pour l’autorun de NDO

nano /etc/init.d/ndo2db

Et on y rajoute ceci

#!/bin/sh
#
#
# chkconfig: 345 99 01
# description: Nagios to mysql
#
# Author : Gaëtan Lucas
# Realase : 07/02/08
# Version : 0.1 b
# File : ndo2db
# Description: Starts and stops the Ndo2db daemon
#              used to provide network services status in a database.
#

status_ndo ()
{
    if ps -p $NdoPID > /dev/null 2>&1; then
            return 0
    else
        return 1
    fi

    return 1
}

printstatus_ndo()
{
    if status_ndo $1 $2; then
        echo "ndo (pid $NdoPID) is running..."
    else
        echo "ndo is not running"
    fi
}

killproc_ndo ()
{
    echo "kill $2 $NdoPID"
    kill $2 $NdoPID
}

pid_ndo ()
{
    if test ! -f $NdoRunFile; then
        echo "No lock file found in $NdoRunFile"
        echo -n "         checking runing process..."
        NdoPID=`ps h -C ndo2db -o pid`
        if [ -z "$NdoPID" ]; then
            echo "     No ndo2db process found"
            exit 1
        else
            echo "     found process pid: $NdoPID"
            echo -n "         reinit $NdoRunFile ..."
            touch $NdoRunFile
            chown $NdoUser:$NdoGroup $NdoRunFile
            echo "$NdoPID" > $NdoRunFile
            echo "     done"
        fi
    fi

    NdoPID=`head $NdoRunFile`
}

# Source function library
# Solaris doesn't have an rc.d directory, so do a test first
if [ -f /etc/rc.d/init.d/functions ]; then
    . /etc/rc.d/init.d/functions
elif [ -f /etc/init.d/functions ]; then
    . /etc/init.d/functions
fi

prefix=/usr/local/nagios
exec_prefix=${prefix}
NdoBin=${exec_prefix}/bin/ndo2db
NdoCfgFile=${prefix}/etc/ndo2db.cfg
NdoRunFile=${prefix}/var/ndo2db.run
NdoLockDir=/var/lock/subsys
NdoLockFile=ndo2db.lock
NdoUser=nagios
NdoGroup=nagcmd

# Check that ndo exists.
if [ ! -f $NdoBin ]; then
   echo "Executable file $NdoBin not found.  Exiting."
   exit 1
fi

# Check that ndo.cfg exists.
if [ ! -f $NdoCfgFile ]; then
   echo "Configuration file $NdoCfgFile not found.  Exiting."
   exit 1
fi

# See how we were called.
case "$1" in

    start)
        echo -n "Starting ndo:"
        touch $NdoRunFile
        chown $NdoUser:$NdoGroup $NdoRunFile
        $NdoBin -c $NdoCfgFile
        if [ -d $NdoLockDir ]; then
            touch $NdoLockDir/$NdoLockFile;
               fi
        ps h -C ndo2db -o pid > $NdoRunFile
        if [ $? -eq 0 ]; then
            echo " done."
            exit 0
        else
            echo " failed."
            $0 stop
            exit 1
        fi
        ;;

    stop)
        echo -n "Stopping ndo: "

        pid_ndo
        killproc_ndo

        # now we have to wait for ndo to exit and remove its
        # own NdoRunFile, otherwise a following "start" could
        # happen, and then the exiting ndo will remove the
        # new NdoRunFile, allowing multiple ndo daemons
        # to (sooner or later) run
        #echo -n 'Waiting for ndo to exit .'
        for i in 1 2 3 4 5 6 7 8 9 10 ; do
            if status_ndo > /dev/null; then
            echo -n '.'
            sleep 1
            else
            break
            fi
        done
        if status_ndo > /dev/null; then
            echo
            echo 'Warning - ndo did not exit in a timely manner'
        else
            echo 'done.'
        fi

        rm -f $NdoRunFile $NdoLockDir/$NdoLockFile
        ;;

    status)
        pid_ndo
        printstatus_ndo ndo
        ;;

    restart)
        $0 stop
        $0 start
        ;;

    *)
        echo "Usage: ndo {start|stop|restart|status}"
        exit 1
        ;;

esac

# End of this script

Au besoin on rattrape les droits de ndo2db

chown root:root /etc/init.d/ndo2db
chmod 755 /etc/init.d/ndo2db

Inscription de ndo2db au démarrage et on lance les services

update-rc.d ndo2db defaults
/etc/init.d/ndo2db start
/etc/init.d/nagios restart

Verification de l’ecriture dans la base

tail -f /usr/local/nagios/var/nagios.log

En cas de data sink error ou pour forcer la coupure :

1) Via le script

/etc/init.d/ndo2db restart

2) En manuel (rm du socket et restart)

rm /usr/local/nagios/var/ndo.sock
/usr/local/nagios/bin/ndo2db -c /usr/local/nagios/etc/ndo2db.cfg

Zephilou

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