Find the Largest Files on a Linux Machine

Mark Berry April 12, 2013

The PBX in a Flash machine at a client site sends me a daily Logwatch email (setup described here). At the bottom of that email are a few lines telling me how much disk space is in use. I also SNMP to monitor disk usage (described here).

Both of these tell me that disk usage is up to 75%. Looking back a few months, it was only 50%. What is using up so much space?

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Manage and Monitor Dell PERC RAID under Linux

Mark Berry February 17, 2012

I’ve repurposed an old Dell PowerEdge 1500SC with a PERC 3/SC RAID card for use as a Linux phone server running Asterisk. Unfortunately, the only version of Dell OpenManage that works for the 1500SC (OpenManage 4.5 docs and download) is only supported under Redhat 7.1. I’m using CentOS 5.2, so I’m out of luck.

I eventually found that I could use Linux tools for the LSI MegaRAID SCSI 320-1LP to control and monitor the PERC 3/SC. Visit this download page and search for “OS: Linux”.

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SNMP ssCPUIdle Incorrect on CentOS 5.2

Mark Berry July 8, 2011

I use SNMP to monitor ssCPUIdle on CentOS 5.2. Today, after 248 days of uptime, it started returning 0% idle:

$snmpwalk -v 1 localhost –c public .1.3.6.1.4.1.2021.11.11
UCD-SNMP-MIB::ssCpuIdle.0 = INTEGER: 0

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