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Re: slapd hang once a day (fwd)
You may have a new bug.
Most linux systems have a proc filesystem that you can go to as root
to examine the open files a process has. For example, if the pid of
slapd is 100, you should be able to "ls -l /proc/100/fd", which will
give you a listing of devices and inode numbers that are open by the
process.
You can then do a "find / -inum #" where # is the inode number of
the file. In the case of slapd, the number of places the file could
be open is rather small, so you can drasticly reduce the find runs
by narrowing down the directories, for example:
find /etc /dev /(path to ldbm files) /(path to log files) -inum #
Once you know what file is not getting closed, you'll know where to go
to fix the problem. Just because /etc/hosts.allow is the one you get
the error on does not necessarily mean that it's the one not getting
closed.
> Unable to apply the patch as the link given in ITS is no longer valid. Can
> someone pls advise if the patch is needed for OpenLDAP-1.2.9-5 and OpenLDAP
> 1.2.11? If needed, where else can I find the patch or someone can email me
> pls.
>
> Below is a detailed configuration of our server setup and hope it'll help to
> diagnose the problem better.
>
> 1. Version of OpenLDAP
> OpenLDAP-1.2.9-5
>
> 2. Operating System
> RedHat Linux 6.2 with kernel 2.2.15
>
> 3. Hardware specifications
> Intel Pentium III 550 MHz 512MB RAM
>
> 4. User population
> Approximately 4500
>
> 5. Applications/services running on server
> LDAP, BIND8, SSH, APACHE, SSL, PHP, SENDMAIL, IMAP, POP,
> SQUID, MySQL
>
> 6. Applications used by users to access above mentioned services
> MS Outlook/Outlook Express, pine, Netscape mail/navigator, IE
>
> 7. Error found in /var/log/messages as:
>
> Jul 12 12:40:05 server1 slapd[32521]: warning: cannot open
> /etc/hosts.allow: Too many open files
> Jul 12 12:40:05 server1 slapd[32521]: warning: cannot open /etc/hosts.deny:
> Too many open files
>
> Quoting "S.T. Wong" <st@hp735c.csc.cuhk.edu.hk>:
>
> > Hello,
> >
> > We're running OpenLDAP 1.2.11 on Solaris 2.6, and have the same problem.
> > Did the patches mentioned in the ITS cases mentioned incorporated in 1.2.11
> > ?
> >
> > Thanks a lot.
> > Regards,
> > ST Wong
> >
> > > You likely are using brain damaged clients.
> > >
> > > See ITS#237, ITS#169, ITS#142, and ITS#30.
> > >
> > > Kurt
> > >
> > > At 05:09 PM 7/11/00 +0000, antidotez@catcha.com wrote:
> > > >recently, ldap (slapd) has been giving problem. it will
> > > >hang at least once every day and needs manual killing
> > > >and restaring. below is an entry from log file:
> > > >"Jul 10 09:21:55 testserver slapd[19503]: warning:
> > > >cannot open /etc/hosts.allow: Toomany open files"
> > > >
> > > >would appreciate if someone could advise on the
> > > >cause for "cannot open /etc/hosts.allow" and "too many
> > > >open files" and the solution to the hanging problem.
> > > >
> > > >is there any tool/prog that can be used to monitor slapd
> > > >and email/page when the process hang?
> > > >
> > > >your help is greatly appreciated.
> > > >
> > > >thank you very much
> > > >
> > > >regards
> > > >
> > > >
> > > >-----------------------------------------------------
> > > >Get your FREE email from Catcha! http://mail.catcha.com
> >
>
>
> -----------------------------------------------------
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>