Posts Tagged ‘CentOS’

Monitoring my UPS with Splunk

Last time, I had set up my UPS monitoring software on my CentOS logging server. But I wanted more: what good is having a UPS if I can’t monitor things like voltage, battery charge, and load on an ongoing basis? Of course, the answer to this is to log to Splunk, which is what I ended up doing.

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Installing NUT on CentOS

Getting a UPS (Uninterruptible Power Supply) has long been on my tech wish list, so that I could keep my network and logging server up and running during transient power outages. Fortunately, aside from a brief outage right after we bought our house three years ago, power has not been a problem, unlike when I lived in Uptown, with nearly monthly outages. Nevertheless, you never know when the power will go out, so a UPS is a good insurance policy.

So when I recently got the opportunity to pick up one for a steal, I took advantage. Like most UPS appliances, this one came with monitoring software to allow for managing the UPS, as well as safely shutting down a linked computer if the battery backup lost juice, but it was for Windows only. Since I wanted to attach this to my CentOS server, that would not do. Never fear, though, since there is a Linux application that fits the bill: NUT, or Network UPS Tools. Below, I talk about what I did to get it up and running on my server.

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Installing Google Authenticator on CentOS

After a conversation at work about how easy it is to use Google Authenticator for two-factor authentication, I decided that installing Google Authenticator on my CentOS server would be my next project. After all, I had recently automated download of website log files, and I needed to find the next to-do at home. Installing Google Authenticator took a morning and was not instantaneous, but it was simple enough as you will see below.

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Building and installing BOINC on CentOS 6.5

Even with fun tools like yum, sometimes you have no choice but to build an executable from source on Linux. I found that I had to do this when installing BOINC on CentOS 6.5 due to the fact that the precompiled version of the most recent stable version of BOINC, 7.2.42, was compiled against several libraries that Cent)S 6.5 does not have. So here’s how I got everything up and running…

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