Notify the server when the agent is administratively started or stopped

[alledm]

Hello,

Zabbix is very useful for monitoring server availability, and for notifying you when your hosts go down or are unreachable.

HOWEVER, sometime if you are doing unplanned maintenance you don't want Zabbix to send out emails if YOU are performing the reboot of the server yourself.

I have modified the (Redhat/Fedora/Centos) init script to allow it to send a "status" to the Zabbix Server so that you can include in your triggers and 'silence' the notification in case the agent was stopped from an Administrator.

The solution is very simple and can probably be improved.

The changes to the init script are in the START and STOP Section only

 # functions
start() {
        if [ $RUNNING -eq 1 ]
                then
                echo "$0 $ARG: $BINARY_NAME (pid $PID) already running"
        else
                action $"Starting $BINARY_NAME: " $FULLPATH

                [ ${ENABLE_SENDER} -ne 0 ] && $SENDER -z ${ZABBIX_SERVER} -p ${ZABBIX_PORT} -k ${KEY} -s ${HOSTNAME} -o ${STARTED} >/dev/null
                touch /var/lock/subsys/$BINARY_NAME
        fi
}

stop() {
        echo -n $"Shutting down $BINARY_NAME: "
        killproc $BINARY_NAME
        RETVAL=$?
        echo
        if [ $RETVAL -eq 0 ]
            then
                [ ${ENABLE_SENDER} -ne 0 ] && $SENDER -z ${ZABBIX_SERVER} -p ${ZABBIX_PORT} -k ${KEY} -s ${HOSTNAME} -o ${STOPPED} >/dev/null
                rm -f /var/lock/subsys/$BINARY_NAME
        fi
        RUNNING=0
}

I have also configured these variables in a separate file

vi /etc/sysconfig/zabbix

 Default zabbix configuration

# Zabbix-Directory
BASEDIR=/usr

# Agent Binary File
BINARY_NAME=zabbix_agentd
SENDER_NAME=zabbix_sender

# Full Binary File Call
FULLPATH=${BASEDIR}/sbin/${BINARY_NAME}

# Sender full path
ENABLE_SENDER=1
SENDER=${BASEDIR}/bin/${SENDER_NAME}
KEY=agent_status[]
STARTED=1
STOPPED=0
ZABBIX_SERVER=zabbix-server
ZABBIX_PORT=10051

# PID file
PIDFILE=/var/run/zabbix/$BINARY_NAME.pid
# Establish args

ERROR=0
STOPPING=0

All you need to do then is to create an item on the Zabbix_Agent template of type TRAPPER and modify your triggers to include it.


Let me know what you think
Regards
Alessandro