On Fri, 2009-09-25 at 18:22 +0200, gator...@yahoo.de wrote: > I have several server that get their user base from a ldap directory. > Particularly on one of them, I regularly get error messages in the > syslog saying "error writing to client". Usually, there are short > burst of messages (several messages send within the same seconds) > about every 10 minutes. I can't discover anything that happens at the > same time and might trigger these messages. > > I searched the bug tracking system and mailing lists and discovered > some older issues in connection with very large groups, but this > does not seem to be the problem in my case. Actually, as far as I can > tell everything works fine otherwise. When I restart nslcd, the > messages will go away for some hours or even days. > > What is the significance of these messages? Are they a sign of some > serious problem (in this case a more specific message telling what is > going wrong would be great) or are they just debugging messages that > can be safely ignored (in which case I'd suggest a lower priority; > a more specific message still would be great).
In most scenarios this is nothing to worry about. This error message is sent when the nslcd has answer data available for a request the NSS library made and the NSS library does not retrieve the data (within a reasonable time). Buffers are used so this problem should probably only occur with large datasets. This can happen when a specific user is tried to look up by requesting all users from nslcd and then stopping when the first match is found or something similar. I have modified the warning message to contain more information on the error (will be in the next upload). If you want to track down the application that is responsible you can run nslcd in debug mode (it should function the same as in non-debug mode, except that it is not daemonised and returns more debugging information. This way you can at least track down the process id of the client that is causing the problems (most likely). -- -- arthur - adej...@debian.org - http://people.debian.org/~adejong --
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