Author Archives: TKH Specialist
Remember when you issued that command…?
- Jan
- 06
Bash History: Display Date And Time For Each Command When working in a clustered environment where sometimes documentation gets written past, it is often helpful to know when you issued certain commands. The bash history is great except it doesn’t include a date/time stamp by default. Here is how to add one: To display the […]
read moreStuck in Full Screen
- Dec
- 11
We all like a little more real estate when working on a computer, especially when browsing the web. Why? Because scrolling…well isn’t efficient. One problem, chrome decided I should never leave Full Screen mode! That creates a real problem as everything but the page content is “above the fold” so to speak. Rather than discontinue […]
read moremailservertest: A command line script to test mail servers
- Dec
- 08
mailservertest can be used to make testing mail servers a bit easier. It is a short script written in Python. Here a few use cases. You’ve just restarted a number of mail servers, and you want to verify that they … Continue reading →
read moreTrying to contribute….CLAMAV issues
- Nov
- 26
This month has been busy with CLAMAV disturbances to mail flow. Problem was verified by tailing the /var/log/maillog file on any of the 3 MTA’s and seeing entires related to “camav-milter.sock” file being locked due to permissions, or “NOQUEUE: milter-reject” entries due to memory issues. We are attempting to solve the milter issues by croning […]
read moreRunning the Citrix Reciever on Linux
- Nov
- 22
Setting up a new linux workstation and after installing the Citrix Receiver and attempting to start a module (Outlook) I got the dread SSL error: Having run into this every 6 months or so I decided it was time to … Continue reading →
read moreYum that was useful!
- Aug
- 09
Pardon the humor. Just a collection of useful yum commands that are useful to have around but I don’t always remember off the top of my head. I’ll be adding to this post over time. How to list the files installed by a yum package You will need ‘repoquery‘ which is part of ‘yum-utils‘. If […]
read moreFlush This!
- Aug
- 06
I came across this today and learned something new so thought I would share it here. After killing 2 processes that had hung I noticed the following in the ps output: root 373 2 0 Jun11 ? 00:00:00 [kdmflush] root 375 2 0 Jun11 ? 00:00:00 [kdmflush] root 863 2 0 Jun11 ? 00:00:00 [kdmflush] […]
read moreApache-Tomcat VHost redirection
- Jul
- 18
OK this isn’t rocket science however I thought it worth documenting since I will probably forget in 6 months to a year when asked to do this again. The Situation: Tomcat running with an Apache front-end using AJP to pass all traffic through to Tomcat after authenticating against CAS. The Problem: The tomcat application did […]
read moreAfter Clone network configuration
- Jun
- 24
The best part about Virtual Environments is the ability to clone new hosts from old ones. Most of our infrastructure resides in vmware, so when we clone a system it retains the old Nic settings. This is how you get the network interface working after cloning the system: vi /etc/udev/rules.d/70-persistent-net-rules remove eth0 rename eth1 to […]
read moreConfiguring Apache to Redirect All Traffic to One Local URL
- May
- 20
GOAL You want to redirect all requests to your web server to a single page on the server. PROBLEM Note that redirection to an entirely different server is trivial with RedirectMatch. You can redirect all traffic to http://my-server.org to http://other-server.org … Continue reading →
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