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34753 discussions

monitoring a workstation
by MOKRANI Rachid 03 Feb '10

03 Feb '10

Hi, I need to monitor a workstation (Centos 5 x86_64). I need to obtain informations about : - cpu utilization per user, per a period, how many days per user, Any ideas about a good and simple free tool ? Regards. __________________________ Ce message (et toutes ses pièces jointes éventuelles) est confidentiel et établi à l'intention exclusive de ses destinataires. Toute utilisation de ce message non conforme à sa destination, toute diffusion ou toute publication, totale ou partielle, est interdite, sauf autorisation expresse. L'IFP décline toute responsabilité au titre de ce message. This message and any attachments (the message) are confidential and intended solely for the addressees. Any unauthorised use or dissemination is prohibited. IFP should not be liable for this message. Visitez notre site Web / Visit our web site : http://www.ifp.fr __________________________

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cannot mount NFS share, portmap problems, what todo?
by Rudi Ahlers 03 Feb '10

03 Feb '10

Hi all, I want to map an NFS share from a remote server to a local CentOS 5.4 server, but have a problem with portmap: root@mercury:[~]$ service portmap restart pmap_getmaps rpc problem: RPC: Unable to receive; errno = Connection reset by peer Stopping portmap: [FAILED] Starting portmap: [ OK ] root@mercury:[~]$ service portmap status portmap dead but subsys locked root@mercury:[~]$ What is "subsys", and how do I "unlock it"? /var/log/messages gives me this: Feb 3 13:44:23 mercury portmap[2221]: cannot bind udp: Address already in use Which address is it referring to? Portmap isn't running so I don't see how it can be in use. Or should I be looking for the problem elsewhere? Google search results sugested opening port 111 in the firewall, which I have, but still get the error. And I cannot, at any costs, reboot this server. So, is there a way to fix this? -- Kind Regards Rudi Ahlers SoftDux Website: http://www.SoftDux.com Technical Blog: http://Blog.SoftDux.com Office: 087 805 9573 Cell: 082 554 7532

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Not able to redirect console msgs to serial port
by premrajm＠digilink.in 03 Feb '10

03 Feb '10

Hi, Iam using cento-5.3 on x86 machine and iam working to get the console messages redirected to serial port. I have made the necessary changes in the /etc/inittab file. - - - - - id:3:initdefault . . so:12345:respawn:/sbin/agetty ttyS0 9600 vt100 - - - -- - and also in /etc/grub.conf file - - - - serial --speed=9600 --unit=0 --word=8 --parity=no --stop=1 terminal --timeout=10 serial . . kernel /boot/vmlinux-2.6.18-128.el5 ro root=LABEL=/1 console=ttyS0,9600 - - - Still Iam not able to see any console messages redirection on serial port.I have connected the serial port of the Machine_1 which has centos running to Machine_2 where i have opened an hyperterminal.I see no console messages displayed here. Iam , I missing any configuration or is there an rpm i should install ? Thanks and Regards, Premraj M Sr.Software Engineer Tel: +91-080-67274900 Cell: +91-9741231739 Email: premrajm(a)digilink.in Smartlink Network Systems Ltd. Digilink India Ltd, Plot No. 10-A,Next to Hi-Cal Magnetics, Electronic City Phase II, Konappana Agrahara, Bangalore - 560100 Disclaimer : This message is proprietary to Smartlink Network Systems Limited and is intended solely for the use of the individual to whom it is addressed. It may contain privileged or confidential information and should not be circulated or used for any purpose other than for what it is intended. If you have received this message in error, please notify the originator immediately. If you are not the intended recipient, you are notified that you are strictly prohibited from using, copying, altering, or disclosing the contents of this message. Smartlink Network Systems Ltd. accepts no responsibility for loss or damage arising from the use of the information transmitted by this email including damage from virus. ______________________________________________________________________________ This email has been scrubbed for your protection by SecureMX. For more information visit http://securemx.in ______________________________________________________________________________

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Is it possible to run serial console redirection without xen kernel
by premrajm＠digilink.in 03 Feb '10

03 Feb '10

Hi, I have customized my centos Installation and removed the vitalization, Cluster and storage cluster support along with GUI support.I have enabled only server related packages. Regarding serial console redirection,I have checked my serial cable,Ports and inittab and grub.conf configuration.Everything seems to be correct.I wanted to know that is it necessary to have a xen kernel (2.6.18-128xen.el5) installed although you may be booting through an base linux kernel (2.6.18-128.el5).Is there any package for serial redirection that could be necessary.I have installed setserial rpm. Thanks premraj Disclaimer : This message is proprietary to Smartlink Network Systems Limited and is intended solely for the use of the individual to whom it is addressed. It may contain privileged or confidential information and should not be circulated or used for any purpose other than for what it is intended. If you have received this message in error, please notify the originator immediately. If you are not the intended recipient, you are notified that you are strictly prohibited from using, copying, altering, or disclosing the contents of this message. Smartlink Network Systems Ltd. accepts no responsibility for loss or damage arising from the use of the information transmitted by this email including damage from virus. ______________________________________________________________________________ This email has been scrubbed for your protection by SecureMX. For more information visit http://securemx.in ______________________________________________________________________________

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Unicode related query
by Rajagopal Swaminathan 03 Feb '10

03 Feb '10

Greetings, I am able to get a english word list in <file> by using the following command cat <file> | tr -sc A-Za-z '\012' My question is how to specify unicode character and ASCII. Specifically text text file containing 3 byte sequence starting with \x0e in the tr command. I am able to see the character using: echo -e '\xe0\xa5\xbf' What regex incantation would make tr give the results I want? I am new to unicode. Regards, Rajagopal

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An Open-iSCSI Question
by Clint Dilks 03 Feb '10

03 Feb '10

Hi People Using Open iSCSI I have been able to create and mount multiple iSCSI partitions and have them mount at boot. Now I wanted to setup a situation where one of the visible iSCSI partitions mounts at boot and the other is only available if I manually connect to it. This led me to the following command *iscsiadm -m node -T iqn.2001-05.com.equallogic:0-8a0906-237781f06-770000000134b676-inf2-san1 -p 192.168.1.100:3260 --op update -n node.startup -v manual *which stops the server from logging into the partition automatically. This is fine and provides me with the functionality I need, but if anyone run a discovery against the iSCSI storage again eg *iscsiadm -m discovery -t st -p 192.168.1.100:3260 *then node.startup for inf2-san1 gets set back to automatic. Is there any way to make the node.startup setting for inf2-san1 stick even after a discovery ? Thank you :)

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Internet access not working on CentOS but on Windows when travelling
by Mathieu Baudier 02 Feb '10

02 Feb '10

Hello, I'm currently travelling (in south-eastern Europe) with a netbook (Samsung NC 10) running CentOS 5.4 i386. I frequently try to access internet from bars or hotels (mostly via wireless). Although it works pretty often, it happens quite regularly that in some hotels I cannot access internet from CentOS while it is possible from Windows. This is the case in the hotel where I am currently and I'd like to dig this further. To be more precise: - in such cases, connecting to the wireless network itself works (using NetworkManager) - this is when I try to open a web page in Firefox that after a while I get a "page not found exception" - there is no problem on a Windows XP which is also installed on the computer - Fedora 12 has the same issue as CentOS - I suspect that in such cases the network is configured in a windows-specific / non-standard manner (but I had the pb often enough to justify addressing it): I installed Samba and started the winbind service, but it did not help (I know pretty much nothing about Windows networking but doing this already did some magic for me in other contexts...) - there are many places where I could connect with CentOS and wireless without any problem, and it also work in my wireless network back home, so my CentOS config is OK - interestingly, my google phone (G1 running Android 1.6) could access internet via the wireless network of the hotel where I am currently (while CentOS and Fedora can't) Did anyone already face such an issue? Any idea how I could analyze further? Or what I could try? This is not a big deal since I can always reboot to check internet, but all the software I use for my work are on CentOS, so it would be much more practical if I could reliably access internet from it as well. Thanks in advance and cheers from the Black Sea under the snow... Mathieu

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Re: [CentOS] Installing an SSL Cert
by J.Witvliet＠MINDEF.NL 02 Feb '10

02 Feb '10

-----Original Message----- From: centos-bounces(a)centos.org [mailto:centos-bounces@centos.org] On Behalf Of ML Sent: Wednesday, January 27, 2010 1:38 AM To: CentOS mailing list Subject: [CentOS] Installing an SSL Cert HI All, I am considering buying this: http://www.godaddy.com/Compare/gdcompare_ssl.aspx?isc=sslqgo003a Since I have a domain that will be collecting data and processing payments. Where can I find instructions on how to install the certificate? Do I have to run another domain or sub domain for the store? Or can I just run the whole domain on https? Thanks, -Jason _______________________________________________ Ever considerd cacert.org ? ______________________________________________________________________ Dit bericht kan informatie bevatten die niet voor u is bestemd. Indien u niet de geadresseerde bent of dit bericht abusievelijk aan u is toegezonden, wordt u verzocht dat aan de afzender te melden en het bericht te verwijderen. De Staat aanvaardt geen aansprakelijkheid voor schade, van welke aard ook, die verband houdt met risico's verbonden aan het elektronisch verzenden van berichten. This message may contain information that is not intended for you. If you are not the addressee or if this message was sent to you by mistake, you are requested to inform the sender and delete the message. The State accepts no liability for damage of any kind resulting from the risks inherent in the electronic transmission of messages.

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Find and excluding directory
by Tom Brown 02 Feb '10

02 Feb '10

Hi I have to use find to change the perms of a directory and files within that directory recursively but i need to exclude a directory within the top level directory, as its a netapp and so contains a read only .snapshot dir. I have tried... # find /var/data/foo -path '\.\/\.snapshot' -prune -o -exec chown usera:groupb {} \; but chown: changing ownership of `/var/data/foo/.snapshot': Read-only file system chown: changing ownership of `/var/data/foo/.snapshot/hourly.0': Read-only file system chown: changing ownership of `/var/data/foo/.snapshot/hourly.0/filename': Read-only file system any clue ? thanks

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dm-crypt/LUKS the state of the art for block device encryption?
by Robert P. J. Day 02 Feb '10

02 Feb '10

it's been a while since i've played with filesystem encryption so, on centos 5.4 (and other linux distros), is dm-crypt/LUKS considered to be the state of the art WRT encryption? i remember other solutions like loop-aes and others, but what's considered the gold standard these days? rday -- ======================================================================== Robert P. J. Day Waterloo, Ontario, CANADA Linux Consulting, Training and Kernel Pedantry. Web page: http://crashcourse.ca Twitter: http://twitter.com/rpjday ========================================================================

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