Currently Browsing: Linux
Aug 24, 2012
Introspect error The name org.freedesktop.Hal was not provided Running RHN_REGISTER
You would think something as simple as running rhn_register would just run and register for updates without any issues. There are times when this is not the case and today was one of them. The issue occurred when running rhn_register on RedHat EL 5.4 (Tikanga) servers when after selecting next on teh review screen I received the error. “Introspect error: The name org.freedesktop.Hal was not provided... read more
Aug 22, 2012
How To Increase the Maximum Number of File Descriptors RHEL / CentOS
Recently ran into a issue where a program running on RHEL was using up all the available File Descriptors. First we need to find out what the maximum number of open file descriptors is set to. We accomplish this by running the command: # cat /proc/sys/fs/file-max 589420 The output tells us it is set to 589420. The vendor asked for this to be increased to 1639200. We can add change the value immediately by... read more
Aug 14, 2012
Gathering Open Systems System information with cfg2html
As systems administrators we are always wanting a way to gather information on your Open Systems, you can do this with various different systems commands and add them in scripts and set as cron jobs, or whatever method you prefer. Now if there is a program that can do that for us and output in txt or html or both, then thats better. Well, such a program does exist call cfg2html... read more
Jul 2, 2012
Java leapsec issue causes high CPU
Seems like a bug is going around caused by leapsec in Java that causes high CPU. There is a simple fix for the issue. For CentOS / RHEL 5 & 6 /etc/init.d/ntpd stop; date; date `date +”%m%d%H%M%C%y.%S”`; date Wait for the CPU to go down and then restart ntpd /etc/init.d/ntpd start After doing this, see if the cpu usage falls down using top or your tool of choice. If not, restart of the ntpd... read more
Jun 18, 2012
Keeping Logfiles at Bay with bash
From time to time there are instances in which an application creates logfiles that are big but you need them to fix an issue. Most times these are trace logs. Ran into a similar situation and came up with a short and simple bash script to address the issue. #!/bin/bash #################################################################### # This will look for trace log and zip them and deleting files... read more
