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System Administration Toolkit: Distributed administration using SSH
System administration and SSH is a topic I’ve covered before (see System Administration Toolkit: Set up remote access in UNIX through OpenSSH), but what I didn’t cover in that article was how you can use SSH as a solution for running commands remo…
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Systems Administration Toolkit: Testing system validity
I recently had a hacking attempt on my machine, perpetrated by somebody noticing the open SSH port and trying every possible user/password and combination trick to try and get in. They didn’t succeed, and I only know that because I was able to che…
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Systems Administration Toolkit: Monitoring mail usage
Keeping an eye on your mail system is about more than making sure the mail gets through. You should also be thinking about spam statistics, usage of the mail system by users and whether users are really getting the best out of the systems that the…
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Mysterious crashes? – check your temporary directory settings
Just recently I seem to have noticed an increased number of mysterious crashes and terminations of applications. This is generally on brand new systems that I’m setting up, or on existing systems where I’m setting up a new or duplicate account. In…
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Develop with Java and PHP technology on AIX Version 5.3, Part 4: Exposing the application as a web service
Part of the PHP and Java series is now available. This part examines how to expose the original Java classes we produced as a web service. For this article: This tutorial takes the Java business application with database created in parts 2 and 3, …
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Develop with Java and PHP technology on AIX Version 5.3, Part 3: Integrating the Java business application with DB2 Version 9
Part 3 of the PHP and Java development series is ready for reading. This part of the series examines the methods for integrating your Java application with a database, in this case DB2 9, so that we can store the responses from our sample survey a…
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Develop with Java and PHP technology on AIX Version 5.3, Part 2: Building the Java business application
The continuing part of the series that looks at developing an application first using Java and then migrating to an interface using a Web interface, through a variety of methods, is now available to read. This second part of the series looks at th…
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System Administration Toolkit: Build intelligent, unattended scripts
A new round of articles in my System Administration Toolkit has just started, and the first one looks at how to write scripts that can run unattended with logging and error recovery. To quote the article contents: Look at how to create scripts tha…
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Develop with Java and PHP technology on AIX Version 5.3, Part 1: Setting up the Java environment
I’ve got a new series of articles and tutorials on how to develop an application using Java with a web interface using PHP. The eventual goal is to use the PHP/Java Bridge, but along the way we look at building the main application, redeploying it…
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Setting a remote key through ssh
One of the steps I find myself doing a lot is distributing round an ssh key so that I can login and use different machines automatically. To help in that process I created a small function in my bash profile script (acutally for me it’s in .bash_a…