omd (Open Monitor Distribution)

1. prereq

curl -s http://d01cid.ddns.net/sharel/bin/cid-upm | sh -s "nagios"
curl -s http://d01cid.ddns.net/sharel/bin/inst-httpd | sh
curl -s http://d01cid.ddns.net/sharel/bin/inst-mariadb-server | sh

2. installation

vi /etc/yum.repos.d/omd.repo

#
[omd]
name=omd
baseurl=http://labs.consol.de/repo/stable/rhel7/$basearch
enabled=1
gpgcheck=0

yum -y install omd

3. configuration

omd create remon

Adding /omd/sites/remon/tmp to /etc/fstab.
Creating temporary filesystem /omd/sites/remon/tmp...OK
Restarting Apache...OK
Created new site remon with version 2.60-labs-edition.

  The site can be started with omd start remon.
  The default web UI is available at http://srv121.d01.net/remon/
  The admin user for the web applications is omdadmin with password omd.
  Please do a su - remon for administration of this site.

htpasswd -b -m /opt/omd/sites/remon/etc/htpasswd omdadmin admin

omd config remon

runuser -l remon -c 'omd config set MYSQL on'
runuser -l remon -c 'omd config set SNMPTRAPD on'
runuser -l remon -c 'omd config set LIVESTATUS_TCP on'
runuser -l remon -c 'omd config set DEFAULT_GUI check_mk'
runuser -l remon -c 'omd config set CORE nagios'

omd start remon

Starting MySQL... first start of MySQL, creating initial database...
...OK.
Starting rrdcached...OK
Starting dedicated SNMPTrapd for site remon...OK
Starting npcd...OK
Starting nagios...OK
Starting dedicated Apache for site remon...OK
Starting xinetd...OK
Initializing Crontab...OK

http://srv121.d01.net/remon/

omdadmin:omd

4. cli

omd status

Doing 'status' on site remon:
mysql:          running
rrdcached:      running
snmptrapd:      running
npcd:           running
nagios:         running
apache:         running
xinetd:         running
crontab:        running
 -----------------------
Overall state:  running

5. agent

 curl -s http://d01cid.ddns.net/sharel/bin/inst-snmpd | sh
 yum -y install http://d01cid.ddns.net/sharel/img/omd/check-mk-agent-1.2.8p20-1.noarch.rpm
// yum -y update check-mk-agent

only install waitmax if /usr/bin/timeout is missing

wget -nv http://d01cid.ddns.net/sharel/bin/waitmax-$(uname -i) -O /usr/bin/waitmax

6. advanced configuration

redirect status.dat to http server

mkdir -p /var/www/html/nagios
ln -sv /omd/sites/remon/tmp/icinga/status.dat /var/www/html/nagios/

create port 33333 to get status.dat

wget -N -nv http://d01cid.ddns.net/sharel/etc/xinetd.d/nagios -P /etc/xinetd.d/
cube /etc/xinetd.d/nagios "%user%" with "remon"
source /bin/cid-functions; cid_add_line /etc/services "nagios          33333/tcp"
systemctl restart xinetd.service

read the UNIX-socket

yum install naemon-livestatus
echo 'GET hosts' | unixcat /omd/sites/remon/tmp/run/live
echo 'GET services' | unixcat /omd/sites/remon/tmp/run/live
echo 'GET log' | unixcat /omd/sites/remon/tmp/run/live | awk -F';' '{print $239,$240}'

https://mathias-kettner.de/checkmk_livestatus.html

7. debugging

Unhandled exception: 400: Table 'hostsbygroup' has no column 'host_comments_with_extra_info'

runuser -l remon -c 'omd config set CORE nagios'

srv002   | Check_MK Discovery   | 1 | WARN - 1 unmonitored services (local:1)(!), 1 vanished services (local:1)

ssh root@srv002 systemctl restart xinetd.service

Traceback (most recent call last):
File "/omd/sites/remon/share/check_mk/web/htdocs/wato.py", line 250, in page_handler
modefunc("content")
File "/omd/sites/remon/share/check_mk/web/htdocs/wato.py", line 15008, in mode_icons
icons = sorted(load_custom_icons().items())
File "/omd/sites/remon/share/check_mk/web/htdocs/wato.py", line 14941, in load_custom_icons
return s.available_icons(only_local=True)
File "/omd/sites/remon/share/check_mk/web/htdocs/valuespec.py", line 3470, in available_icons
from PIL import Image
ImportError: No module named PIL

yum -y install python-pillow

8. references

http://mathias-kettner.com/download

https://labs.consol.de/index.html

https://github.com/iamc/OMD-hands-on/blob/master/OMD-hands-on.rst