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Revision 19 as of 2007-11-30 13:56:15

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MemberManual / FAQ

This page contains answers to questions often asked about DomTool and our setup.

TableOfContents

Services that worked fine yesterday suddenly don't work anymore

The most likely reason for IMAP, DNS, and web hosting to suddenly stop working is that there is a syntax error in one of the files in your ~/.domtool directory. Admins sometimes need to regenerate all domtool configuration files after making a change to domtool; if one of the files in your ~/.domtool directory has errors, it could prevent other files in that directory from being activated.

To figure out whether this was the problem: for each file <FILE> in your ~/.domtool directory, run 

domtool -tc ~/.domtool/<FILE>

If you see any problems, either move the file into a different directory, or fix the problems.

When done, run domtool on each file in your ~/.domtool directory, and everything should be back to normal.

It is highly recommended to keep files in a different directory while testing them, and then copy them to ~/.domtool once you are certain that they are error-free.

If you don't find any errors in your domtool configuration, then you might want to file a support request.

Reference: MemberManual/UsingDomtool.

How do I read my Apache logs?

They are stored in ~/.logs/apache in subdirectories corresponding to machine and domain, and are updated every 20 minutes.

Reference: MemberManual/ServingWebsites.

How do I run screen for a long time on mire?

If you want to have a long-running screen session and avoid permission denied errors, then log into mire and do the following: 

screen
kinit -l 10d
krenew -K 540 -t -b

This will last until the ticket can no longer be renewed (approximately 8 days). However, you can kinit and krenew again while in the screen session to restart the clock. If the ticket expires while in a screen session, then you need to repeat those steps while in screen but be sure to add aklog for AFS ticket. You do not have to restart the screen session. In fact, you can dedicate a screen window just for monitoring and using kinit, aklog, and krenew. With this simple method, your screen session can run indefinitely with minimal weekly input.

Reference: ["MemberManual/TransferringFiles/OpenAFS/Debian"]

Have changes been made to Domtool that render domtool related files invalid if copied verbatim from Fyodor?

Yes, Domtool has changed significantly from the version used in our old infrastructure on Fyodor. Please see the page MemberManual/UsingDomtool for instructions related to the most recent version of Domtool.