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Tag Archives: Troubleshooting

LJDT: Reliable Service / Connection Tests; netcat, not ping, is the correct tool



By: ab

July 18, 2013 11:26 am

Reads:15,917

Score:5

Me: “I cannot get to your site.” Helpdesk: “Hmm, let me check. I can ping it, so it must be okay.” Me: “No, pinging has nothing to do with access to the site.” Helpdesk: “No, you’re crazy, I can ping it so it’s your problem. Goodbye.” If you have never had this type of exchange with others, you’re lucky. The fact of the matter is that ‘ping’, while a good (but not 100% even here) tool to determine if traffic can go from one IP to another, is a lousy tool for determining if anything more than layer three is working …

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Categories: SUSE Linux Enterprise, Technical Solutions

BASH Debugging – Quick Tips

William Vera

By: William Vera

April 22, 2013 9:43 am

Reads:3,372

Score:5

Here is a brief guide to the basics of BASH debugging. Tuck this away for future reference.

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Categories: Enterprise Linux, openSUSE, Server, SUSE Linux Enterprise, Technical Solutions

Running “crash” to analyze dump data on SLES11

William Vera

By: William Vera

April 16, 2013 3:56 pm

Reads:27,402

Score:5

Crash is a powerful tool that will analyze core dumps after crashing, to help you with troubleshooting or forensics analysis. Happy debugging!

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Categories: Enterprise Linux, openSUSE, Server, SUSE Linux Enterprise, Technical Solutions

Loading the Linux Kernel Manually Using GRUB on SLES

mfaris01

By: mfaris01

January 14, 2011 3:18 pm

Reads:111,238

Score:5

If you have ever rebooted a SLES server and were presented with a Grub prompt, you’ll agree that this is not the time to start learning GRUB.

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Categories: SUSE Linux Enterprise Server, Technical Solutions

Apache2 could not bind to address 0.0.0.0:631 after vSphere upgrade



By: mwilmsen

November 17, 2010 5:07 pm

Reads:3,146

Score:Unrated

After the upgrade from vSphere 4.0x to vSphere 4.1 or ESXi 4 to ESXi4.1 apache on a OES 2 server wouldn’t start with the error: apache2 could not bind to address 0.0.0.0:631 after vSphere upgrade

As you all probably know TCP port 631 is for IPP print, or for us Novell guy’s iPrint. iPrint is started with apache (the website that is). But if iPrint cannot start, apache wouldn’t start also. So what’s blocking TCP port 631?

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Categories: Open Enterprise Server on SLES, Technical Solutions

Problems with /boot mounting or a split kernel after patching



By: rothweiler

October 26, 2010 2:14 pm

Reads:6,703

Score:Unrated

Problems mounting /boot? After booting does your /boot appear empty? Here is a complete fix without disabling multipath completely.

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Categories: Enterprise Linux, SUSE Linux Enterprise Server, Technical Solutions

Installing and Configuring KDump on SLES 10 for Kernel Crash Analysis

mfaris01

By: mfaris01

May 25, 2010 11:14 am

Reads:11,655

Score:Unrated

Although Linux continues to prove itself as one of the most stable platforms ever, there are times when something goes awry and bad things happen.

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Categories: Enterprise Linux, SUSE Linux Enterprise Server, Technical Solutions

Upgrading DHCP



By: bbendily

August 4, 2009 11:59 am

Reads:624

Score:Unrated

Fix for problem after upgrading DHCPD RPM from Novell to the ISC.org downloaded version…

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Categories: SUSE Linux Enterprise Desktop, Technical Solutions

Troubleshooting pam_ldap Against eDirectory Issues



By: geoffc

June 11, 2009 2:06 pm

Reads:8,242

Score:Unrated

Geoff Carman explains Pluggable Authentication Modules. Learn how to configure them, and how to troubleshoot them when things go awry.

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Categories: Open Enterprise Server on SLES, SUSE Linux Enterprise Server, Technical Solutions

iproute2 Traffic Control



By: dmair

April 16, 2009 8:39 am

Reads:4,232

Score:Unrated

David Mair explains how to implement traffic management on a Linux router.

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Categories: Enterprise Linux, SUSE Linux Enterprise Server, Technical Solutions

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