[Fedora-directory-users] RE: Random UID not found problem

[markwu at micron.com]

We have found the problem is the overloading the master server, once we
switch client to use a consumer server as primary ldap server, all
problems are gone.
The Master has 16G RAM, two quad-core 3G CPU and it is binding to 400
client machines with 7000 TCP connections. I will try some performance
tuning.

> From: 	markwu  
> Sent:	Thursday, January 31, 2008 2:57 PM
> To:	'fedora-directory-users at redhat.com'
> Subject:	RE: Random UID not found problem
> 
> We just found that all cron jobs at 0,10,20,30,50 every hour would
> fail consistently and give the error in my original post, but any
> other minutes all cron jobs are OK.
> We are using nss_ldap_226-18 and crontabs-1.10-7. I will check if UID
> not found problem occurs also at 10th minutes.
> 
> _____________________________________________ 
> From: 	markwu  
> Sent:	Wednesday, January 30, 2008 2:42 PM
> To:	'fedora-directory-users at redhat.com'
> Subject:	Random UID not found problem
> 
> Hi,
> Some of our users get "UID xxxx not found"  message when they open a
> new terminal or run a rsh command, it appears a few times a day and
> it is mostly just annoying message because users can continue to work
> as normal, however, sometimes It also causes  cron jobs to fail,
> In system log, it shows,
> 
> crond(pam_unix)[9225]: could not identify user (from
> getpwnam(USERNAME))
> crond[9225]: User not known to the underlying authentication module
> 
> We are using Fedora DS 1.0.4, and clients are RHEL 4.5 . This problem
> started ever since we switched into LDAP three months ago.
> 
> Thanks
> 
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