Monitoring Windows Server 2008 R2 with SNMP
March 14th, 2012 by Youzhny
So you have a new Windows Server 2008 R2 installed and now you’d like to start gathering statistics about how it’s performing. The SNMP protocol is a great way to get started. In this tutorial I will install the SNMP agent service on a Windows server and configure it to allow queries from a SNMP based management server. On the management server I will use a tool named Cacti that can collect this...
Sendmail smtp relay gmail google apps
February 15th, 2012 by Youzhny
Configure sendmail to use gmail/google apps as the external smtp server and have it authenticate properly.
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Install and Configure Cacti Network Graphing Tool on CentOS
January 12th, 2012 by Youzhny
Cacti is a network graphing tool similar to MRTG. How do I install and configure common options to collect SNMP data and various other data (such as system load, network link status, hard disk space, logged in users etc) into an RRD? (more…)
Monitoring ESXi Server health using Nagios/Opsview
December 22nd, 2011 by Youzhny
As part of a project I am currently working on I have a requirement to check that my clients’ infrastructure is working to the best of its ability. Whilst we perform regular checks to ensure the sites are running as expected we don’t currently have an easy way to check the health of the ESX hosts that the virtual servers run on. Until now. (more…)
Monitoring HP ESXi Hosts using Insight Remote Support
December 22nd, 2011 by Youzhny
This is just a direct link to the HP Blog article itself but worth a read if you are looking at monitoring any HP server running ESX or ESXi. The main bit that I have always found is that you need to install the HP extensions for ESXi installed as this greatly improves what you can see from remote tools such as Insight Remote Support, Nagios/Opsview or from the vSphere client itself. (more…)
Opsview Labs
December 22nd, 2011 by Youzhny
I had an unexpected, but much welcomed, tweet today from the team at Opsview who would like to make use of some of my writing about Opsview on their own Labs blog. I can honestly say that I wasn’t expecting the blog to be read and picked up in this way but I am pleased that I can hopefully reach a few more people with the data appearing on the Opsview Labs blog as well. (more…)
How to enable SNMP for ESX/ESXi 3.5, 4.x, and 5.0
December 22nd, 2011 by Youzhny
Last night I wrote an article about how to monitor the health of an ESXi server (link here) and I wanted to explain a bit more about my findings with SNMP on an ESXi host.
My goal with the monitoring was to use the check_dell and check_hp commands I have found for Nagios/Opsview to monitor the hardware that ESX is running on. The ESXi installs I am working with are using the Dell and HP management...
Using audible alerts in Opsview
November 8th, 2010 by Youzhny
if you want audible alerts from the Nagios cgi pages, such as status.cgi, you have to configure Opsview to allow this.
Add the following line to the opsview.conf file within /usr/local/nagios/etc/
$overrides .= <<'EOF';
cgi_host_unreachable_sound=hostu.wav
cgi_host_down_sound=hostd.wav
cgi_service_critical_sound=critical.wav
cgi_service_warning_sound=warning.wav
cgi_service_unknown_sound=unknown.wav
EOF
Note...
Opsview
October 27th, 2010 by Youzhny
Opsview® is the award winning open source application, network and infrastructure monitoring software from Opsera. It provides comprehensive system management capabilities used to monitor the health of today’s most complex data centres. Launched in 2003, it is a well established and fully featured product suite with a large worldwide user community. (more…)
Opsview Install on Centos/Red Hat
October 27th, 2010 by Youzhny
Once the repositories have been updated to include the Opsview yum repository, the latest release of Opsview can be installed by running the following command as root. (more…)