{{tag>xenserver monitoring check_mk }}

====== Monitoring von XenServer 7 mit check_mk  ======

Um die Dom0 des XenServers mit cehck_mk überwachen zu können, muss man ein paar Änderungen am  XenServer-Host vornehmen. 


===== xinetd installieren ===== 


  yum --enablerepo=base -y install xinetd


 xinetd Konfiguration in ''/etc/xinetd.d/check_mk'' anlegen:

<code check_mk>
[root@defiant check_mk]# cat /etc/xinetd.d/check_mk 
# +------------------------------------------------------------------+
# |             ____ _               _        __  __ _  __           |
# |            / ___| |__   ___  ___| | __   |  \/  | |/ /           |
# |           | |   | '_ \ / _ \/ __| |/ /   | |\/| | ' /            |
# |           | |___| | | |  __/ (__|   <    | |  | | . \            |
# |            \____|_| |_|\___|\___|_|\_\___|_|  |_|_|\_\           |
# |                                                                  |
# | Copyright Mathias Kettner 2014             mk@mathias-kettner.de |
# +------------------------------------------------------------------+
#
# This file is part of Check_MK.
# The official homepage is at http://mathias-kettner.de/check_mk.
#
# check_mk is free software;  you can redistribute it and/or modify it
# under the  terms of the  GNU General Public License  as published by
# the Free Software Foundation in version 2.  check_mk is  distributed
# in the hope that it will be useful, but WITHOUT ANY WARRANTY;  with-
# out even the implied warranty of  MERCHANTABILITY  or  FITNESS FOR A
# PARTICULAR PURPOSE. See the  GNU General Public License for more de-
# ails.  You should have  received  a copy of the  GNU  General Public
# License along with GNU Make; see the file  COPYING.  If  not,  write
# to the Free Software Foundation, Inc., 51 Franklin St,  Fifth Floor,
# Boston, MA 02110-1301 USA.

service check_mk
{
	type           = UNLISTED
	port           = 6556
	socket_type    = stream
	protocol       = tcp
	wait           = no
	user           = root
	server         = /usr/local/bin/check_mk_agent

	# If you use fully redundant monitoring and poll the client
	# from more then one monitoring servers in parallel you might
	# want to use the agent cache wrapper:
	#server         = /usr/local/bin/check_mk_caching_agent

	# configure the IP address(es) of your Nagios server here:
	only_from      = 127.0.0.1 10.17.1.3

	# Don't be too verbose. Don't log every check. This might be
	# commented out for debugging. If this option is commented out
	# the default options will be used for this service.
	log_on_success =

	disable        = no
}
</code>


Anschließend muss man den xinet-Dienst noch dauerhaft aktivieren und auch starten:

<code>
systemctl enable xinetd
systemctl restart xinetd
</code>


===== Firewall des XenServers für Port 6556 öffnen =====


In ''/etc/sysconfig/iptables'' die Zeile
<code>
   -A RH-Firewall-1-INPUT -m conntrack --ctstate NEW -m tcp -p tcp --dport 6556 -j ACCEPT
</code>
einfügen und die FW neu starten: ''service iptables restart''

===== Die check_mk-Agents vom Monitoring Server (MoniPi) auf den XenServer transferieren =====


(Auf Monitoring Server) ''/opt/omd/versions/1.20/share/check_mk/agents/check_mk_agent.linux''\\
(Auf Monitoring Server) ''/opt/omd/versions/1.20/share/check_mk/agents/check_mk_caching_agent.linux''


Am besten nach ''/usr/local/bin'', ohne .linux, muss zur Einstellung in der xindetd-Konfig oben passen!