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stange lockd issue on CentOS 4.4
by Alexey Loukianov 15 Nov '06

15 Nov '06

Greetings, CentOS. After up2dating one of the corporate mail servers to CentOS 4.4 (was CentOS 4.2) and upgrading kernel to kernel-smp-2.6.9-42.0.3.EL, the following kernel messages started to appear in syslog: [root@gamma ~]# dmesg ........... ...CUT..... ........... lockd: unexpected unlock status: 1 lockd: unexpected unlock status: 1 lockd: unexpected unlock status: 1 lockd: unexpected unlock status: 1 lockd: unexpected unlock status: 1 lockd: unexpected unlock status: 1 lockd: unexpected unlock status: 1 lockd: unexpected unlock status: 1 lockd: unexpected unlock status: 1 lockd: unexpected unlock status: 1 lockd: unexpected unlock status: 1 lockd: unexpected unlock status: 1 lockd: unexpected unlock status: 1 lockd: unexpected unlock status: 1 lockd: unexpected unlock status: 1 lockd: unexpected unlock status: 1 lockd: unexpected unlock status: 1 lockd: unexpected unlock status: 1 Rebooted with an older kernel (2.6.9-34.0.2.ELsmp), but the problem persists. This server utilizes NFS share as a storage volume for user mail boxes, the NFS server is also a CentOS 4.4 server, also with the kernel, up2dated to kernel-smp-2.6.9-42.0.3.EL few weeks ago. As this is a production environment, I can't simply go and reboot NFS server to an older kernel - this would lead to a small amount of downtime, which is undesirable for me. Could someone help me to understand what does that messages mean, why did they appear, and what caveats they may cause to me except for spammed syslog? Thanks in advance. -- Best regards, Alexey Loukianov mailto:aloukianov@lavtech.ru Software Development Department, Lavtech Corp http://mnogo.ru, http://lavtech.ru

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Benchmarking DNS and DHCP
by Ian Anderson 15 Nov '06

15 Nov '06

Does anyone know of any FOSS tools that can assist in benchmarking ISC DNS and DHCP services? I would like to simulate X number of users attempting to pull an IP, resolve DNS names, etc. I would also like to test TCP connections into a CentOS server. We have some software that communicates with equipment via a TCP connection and I want to simulate thousands of TCP connections coming into one server. Any suggestions are welcome.

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fetchmail problem
by Rajeev R Veedu 15 Nov '06

15 Nov '06

In my fetchmail setup it will fetch only 99 mails at a time. And if the mail numbers are more than 99 it fetch up to 99 and look back same e-mails again and again. (It won't delete the fetched mails) Could someone please help me how to fix this problem? Is there any setting in the fetchmail.rc file that default number of mails to be fetched in a go is max 99 or something like that? Or is there any other package which does the same job? If I could fix this problem I am quite happy to use fetchmail. Thanks Rajeev

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Directory Server
by Leonardo Vilela Pinheiro 15 Nov '06

15 Nov '06

Did Red Hat release a stable (non-beta) and GPL version of Directory Server, or Fedora Directory Server is the only thing we have now? Can we have it on centosplus or extras? -- Vilela

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OT: Q: Howto implement a monitored Shell for remote logins
by Sanjay Arora 15 Nov '06

15 Nov '06

I sometimes need to allow sub-contracted admins root ssh access to my servers. Later, I always wonder what they did during access. Is there any shell that provides all shell abilities to the remote user but monitors/emails a designated user each command executed in the shell terminal and does not allow the user (even root) to modify the bash history file or similar shell history file, or maybe sending each command by email to a remote server, so that modifying history becomes out of question? Hope someone can help. With regards. Sanjay.

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Upgrading with Centos
by Bo Lynch 15 Nov '06

15 Nov '06

Hello, I work with a public school system in VA. Currently we run Fedora on all our servers. We have just tried an upgrade with CentOS on an old print server with success. We have a have a few samba servers that run winbind and an email server that is running postfix+squirrelmail+spamassn+anitiv. Has anyone tried doing this with success? -- Bo Lynch Systems Administrator RedHat Academy Instructor Energy Manager Amelia County Public Schools

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About download ISO image
by Stephen Liu 15 Nov '06

15 Nov '06

Hi folks, CentOS is completely a new to me. I'm prepared to install CentOS 4.4 on a AMD64 PC to run it as server. Please advise whether /CentOS/4.4/isos/x86_64/ will be the right ISO image for me to download. TIA B.R. satimis

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PHP 5.1.x VERSION
by Rajeev R Veedu 15 Nov '06

15 Nov '06

Has anyone got PHP 5.1.6 rpm for centos? Any thin near to 5.1 would do. I need following RPMs php php-pear php_mysql php_mbstring If some one could guide me to download these would be helpful. Thanks Rajeev

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RE: [CentOS] ipsec-tools with cisco vpn client
by Alex Palenschat 14 Nov '06

14 Nov '06

> Scenarios are: > - ipsec-tools with Cisco vpn client Hmmm... I only run non-graphical servers and ipsec-tools without RH gui gives me a major headache... > - pptpd with Windows XP native client We ran this and it works fine, but throughout it's life had to do lot's of patching and kernel recompiling. Not sure if that is the case now as we've moved on. Two other MAJOR issue with this: 1: is that it's password based and if you allow users to pick passwords then be prepared for compromise. 2: you cannot have more than one connection to the same server from behind NAT. We'd always run into this with tradeshows ;) all the reps would stay at the same hotel and only one could use the vpn at a time. Get ready for a lot of upset reps (of course you may not have this issue) > - OpenVPN with OpenVPN Windows client Very slick, add rpmforge repo, yum install openvpn and go to town. I have no major complaints with this system and it's very NAT friendly compared to the other two options. My 2 cents, alex

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OT: What netflow tool do you recommends me?
by C. L. Martinez 14 Nov '06

14 Nov '06

Hi all, I need to setup a netflow reporting tool under CentOS server to collect traffic data from several firewalls. What netflow tool do you recommends me? Of course, Open source. Many thanks.

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