Ticket #918

Do these inside DB server

sudo vim /usr/lib/nagios/plugins/check_logfile.sh

#!/bin/bash

LOGFILE="/var/log/syslog"
PATTERNS=("ERROR" "CRITICAL" "WARNING")
RESULT=""

for PATTERN in "${PATTERNS[@]}"; do
    if grep -q "$PATTERN" "$LOGFILE"; then
        RESULT+="$PATTERN found. "
    fi
done

if [ -z "$RESULT" ]; then
    echo "OK: No patterns found."
    exit 0
else
    echo "CRITICAL: $RESULT"
    exit 2
fi

sudo chmod +x /usr/lib/nagios/plugins/check_logfile.sh

sudo vim /etc/nagios/nrpe.cfg

Add this with all the other check commands:

command[check_logfile]=/usr/lib/nagios/plugins/check_logfile.sh

sudo systemctl restart nagios-nrpe-server

Do these inside MGMT server

• Use the existing check_nrpe command from nagios plugins

Go to the existing nagios puppet module config.pp

nagios_hostgroup {"Check-Logfiles":
  target => "/etc/nagios3/conf.d/ppt_hostgroups.cfg",
  mode => "0444",
  alias => "Check logfiles",
  members => "db-c",
}


nagios_service { "db_logfiles_check":
  service_description => "Checking DB Logfiles",
  hostgroup_name => "Check-Logfiles",
  target => "/etc/nagios3/conf.d/ppt_services.cfg",
  check_command => "check_nrpe!check_logfile",
  max_check_attempts => 3,
  retry_check_interval => 1,
  normal_check_interval => 5,
  check_period => "24x7",
  notification_interval => 30,
  notification_period => "24x7",
  notification_options => "w,u,c,r",
  contact_groups => "slackgroup",
  mode => "0444",
}

• Apply to puppet agent
• Restart Nagios

If all goes well you should be able to see the nagios check here: