August 2015
Intermediate to advanced
144 pages
2h 58m
English
Content preview from Troubleshooting PuppetBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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ActiveMQ and resource limits
The ActiveMQ broker runs under the activemq user account by default. Most systems will limit non-root users' usage of resources using the user limit (ulimit) mechanism. When the broker runs as the activemq user, the number of open files permissible by the activemq user will limit the number of open connections that the process can have (each connection consumes an open file handle). Each node in the message queue needs an active connection. The number of nodes connected to the broker will be roughly equal to the number of open files allowed. After running a broker on my EL6 system, the default ulimit value is 1024, and the number of nodes that I would typically be able to reach via the broker is 1000. You can check ...
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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.