January 2016
Intermediate to advanced
146 pages
3h 8m
English
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Monitoring the node status
As you can guess, perhaps the first thing that you always need to check is the status of each node—whether they are online or offline. Otherwise, there is little point in proceeding with further availability and performance analysis.
If you have a network management system (such as Zabbix or Nagios) server, you can easily monitor the status of your cluster members and receive alerts when they are unreachable. If not, you must come up with a supplementary solution of your own (which may not be as effective or errorproof) that you can use to detect when a node has gone offline.
One such solution is a simple bash script (we will name it pingreport.sh, save it inside /root/scripts, and make it executable with chmod +x /root/scripts/pingreport.sh ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.