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Centos 5.1 installation problems -- couldn't find devices
by Yu-Hui Jin 17 Mar '08

17 Mar '08

Hi, there, I just bought a Dell Inspiron 530 with the following basic configuration: Inspiron 530 Intel Core2 processor Q6600 (2.40Ghz 1066FSB) w/Quad Core Technology and 8MB cache SATA 0: Samsung HD501LJ (500GB Serial ATA II Hard Drive(7200RPM)) SATA 1: PDBS DVD +/- RW DH-16W1S (16X DVD+/-RW Drive) I tried to install Centos 5.1 on it with dual boot (keep Windows XP partition) and got stuck on some strange issues. I hope one of you could shed some light on what I should do next. Here's the summary of my installation attempts. Attempt 1: I burned both an installation DVD (slow and verified) and installation CD #1. I tried them both and both failed due to no driver found. More specifically, at the step for "what type of media contains the packages to be installed?", I chose "Local CDROM", the result screen said "No driver found" and prompted me to Select driver from a list of drivers. I randomly chose a few but none worked. Attempt 2. I tried network installation. I chose "HTTP" when prompted for the media. I then specified the mirror.centos.org<http://mirror.centos.org/centos/5/os/i386/>as the Web Site Name and /centos/5/os/i386/ <http://mirror.centos.org/centos/5/os/i386/> as the Red Hat directory. It got the installation started successfully. However, at the step for partitioning the disk, I was prompted to choose the partition option and I checked the "review and modify partitioning layout". Also, there's no drive shown in the "select the drive(s) to use for this installation" panel. When i clicked Next, a "No drives Found" message popped up, saying "an error has occurred -- no valid devices were found on which to create new file systems. please check your hardware for the cause of this problem." It seemed both attempts failed due to the installation program couldn't find either the SATA DVD drive or the SATA hard disk. However, it's hard to believe Centos 5.1 installation couldn't recognize these two SATA devices. I'm now stuck. Any suggestion or advice is much appreciated. -- Regards, -Hui

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radius WPA
by David Hláčik 17 Mar '08

17 Mar '08

Hi , will be someone so kind and will provide mi howto, or working configuration of Acess Point WPA authentification using Radius Server . I have followed a lot of howtos, unfortunatelly no one works for me. Using Centos 5.1 . Thanks, Regards D.

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10Gbit ethernet
by Jake Grimmett 17 Mar '08

17 Mar '08

If I could ask question about 10Gbit ethernet.... We have a 70 node cluster built on Centos 5.1, using NFS to mount user home areas. At the moment the network is a bottleneck, and it's going to get worse as we add another 112 CPUs in the form of two blade servers. To help things breath better, we are considering building three new NFS servers, and connecting these and the blade servers directly via 10Gbit to a new core switch, the older nodes will stay with 1Gbit ethernet, but be given new switches uplinked via 10Gbit to the core switch. Before I spend a great deal of money, can I ask if anyone here has experience of 10GBit? Dell, HP, Supermicro, IBM (etc..) seem to be pushing the NetXen PCIe cards, so I guess these drivers work...? As to media, although CX4 seems cheaper than optical, I hear the cabling is nasty. And is the magical fairy going to fix 10Gbit over cat6A anytime soon? any thoughts appreciated. Jake --

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internal messages problem with postfix
by Mufit Eribol 17 Mar '08

17 Mar '08

Hello, After a server crash, I re-installed postfix, cyrus-imapd, amavisd-new, spamassassin on a Centos 5.1 box. But, now mail system behaves somewhat different. There is no problem with mail receiving/sending from/to internet. Before the crash, mail system used to sent internal messages to root(a)example.com. But now, I can't receive internal messages as it tries to send them to root(a)server.example.com. I used the same postfix, cyrus-imapd, amavisd-new, /etc/aliases conf files from the previous setup. Must be a configuration issue I overlook. Could anybody please tell me what to check? Best wishes, Mufit main.cf: mydomain = example.com myhostname = server.example.com mydestination = example.com ... amavisd.conf $mydomain = 'example.com'; $myhostname = 'server.example.com';

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MySQL 4.1 on Centos 5 ?
by Sergej Kandyla 17 Mar '08

17 Mar '08

Hi All, Could anyone tell me, how to correctly install MySQL4.1 on Centos 5 ? By default Centos 5 comes with mysql5… If I will compile mysql4 from sources to separate prefix, some features may be unavailable (unix sockets for example). I’m moving some critical application (online booking) based on java, tomcat5, mysql4.1 from old server fedora 4 to new server running Centos 5. So, I don’t want update mysql to new version this time. Thanks, SK

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Partition/filesystem expansion difficulties
by Hugh E Cruickshank 17 Mar '08

17 Mar '08

CentOS 4.6 Hi All: I am now officially stumped. I have tried everything that can think of and I have googled until I am blue in the face and tried just about everything that I could find that looked the least bit like it might apply and still no (or at least partial) joy. I am going to cram as much information into this email as I can and hope that someone out there can either tell me what I am doing wrong or point me in a new direction for research. The hardware: We have an Acer G700 server which comes with 8 internal hot swap SCSI bays connected to an Adaptec SCSI HBA. There are two banks of 4 drives connect to each of the two channels of the Adaptec HBA. To this we have added an IBM EXP400 external array with 12 hot swap SCSI drives connected to an LSI MegaRAID HBA. 36GB drives were used throughout. The external drives were configured as 6 mirror pairs through the MegaRAID BIOS. The OS install: When I installed CentOS 4 originally I allowed the installer to configure the 8 internal drives with software mirroring and the external drives as a striped set effectively making the external disk array a RAID 10 array. The original problem: Our boot drive failed which did not cause an immediate problem as the system kept on running. The real problem was that I had already used all the spare drives I had on-hand and I could not source a replacement drive that matched on size and speed (10K). The original solution: I then had what I thought was a good idea and I purchase three 146GB 10K drives. I would replace the two 36GB drives used in the system mirrored pair with 146GB drives and have one 146GB spare. I would then be able to free up a 36GB to use as a spare for the other three pairs of drives. This proved to be easier said then done but I did eventually get it done by using Norton Ghost to copy the good mirrored 36GB drive on to two of the 146GB drives and then using grub to install the bootloader (which I found out the hard way is NOT installed on the mirrored drive - ARGHHHHHH!). However I did get it done but with one minor problem. The current problem: The two 146GB drives are now partitioned as 36GB and I want to expand the partitions and the installed filesystems to use the additional space available on the drives. The current partition looked like: Device Boot Start End Blocks Id System /dev/sda1 * 1 64 514048+ fd Linux raid autodetect /dev/sda2 65 1084 8193150 fd Linux raid autodetect /dev/sda3 1085 1339 2048287+ fd Linux raid autodetect /dev/sda4 1340 4462 25085466 f W95 Ext'd (LBA) /dev/sda5 1340 4462 25085466 fd Linux raid autodetect No problem I thought and proceeded make a Ghost copy of the boot drive and then used PartedMagic to expand both the last physical and logical partitions and the resident ext3 files system. Lucky thing I mad that Ghost copy and the filesystem turned out to be corrupt (could not find the super block). Restored from the backup. I then tried using PartedMagic to expanding just the last physical partition and that worked. The current fdisk for both sda and sde looks like: Device Boot Start End Blocks Id System /dev/sda1 * 1 64 514048+ fd Linux raid autodetect /dev/sda2 65 1084 8193150 fd Linux raid autodetect /dev/sda3 1085 1339 2048287+ fd Linux raid autodetect /dev/sda4 1340 17849 132616575 f W95 Ext'd (LBA) /dev/sda5 1340 4462 25085466 fd Linux raid autodetect I then tried to use resize2fs to expand the files systems but that did on work. No error, it just report that the filesystems were already at the full size. Today I tried to use: mdadm --grow /dev/md3 --size=max resize2fs /dev/md3 but again no joy (md3 is the filesystem in sda5/sde5). No errors but no change either. I even thought to look at LVM but, as far as I can tell, that is not being used in our case (all drives are listed and unregistered). The plea: If anyone has any thoughts on what I have been doing wrong or a new direction that I can research I would really appreciate it. From everything that I have read this should be doable. My next step is to backup the contents of the filesystem and then delete it, re-create it and restore the backup. If that is the only way of doing this then I will gladly do it but I still think I should be able to expand it in-place (just call me stubborn). TIA Regards, Hugh -- Hugh E Cruickshank, Forward Software, www.forward-software.com

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Bind Problem
by Joseph L. Casale 17 Mar '08

17 Mar '08

I have a DNS server which is not returning mx queries for some reason? The zone file is as follows: $TTL 1H @ IN SOA example.com. root.example.com. ( 1 ; serial# 3H ; refresh 1H ; retry 1W ; expire 1H ) ; minimum NS ns1.example.com. MX 10 mail TXT "v=spf1 a mx include:isp.com -all" example.com. A aaa.bbb.ccc.ddd ns1 A aaa.bbb.ccc.ddd mail A aaa.bbb.ccc.ddd The server is setup as with a caching only configuration with recursion turned off. Anyone have any idea what could be wrong? Thanks! jlc

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Running network services as a non-root user
by David Hláčik 17 Mar '08

17 Mar '08

Hi, I am using open source Alfresco( alfresco.com ), written in java, which has own code for FTP, CIFS (running on tomcat apache and java). I need to run tomcat5 as root in order to achieve that alfresco will bind ftp cifs on privileged ports (21 , 135 .). I am wondering, it is possible to allow user to bind on some privilleged port. Like having whole alfresco running under user alfresco and not root and able to bind on privileged ports? CentOS 5.1 Thanks! David

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what should I do?
by Sobari Tanuwijaya 17 Mar '08

17 Mar '08

Dear All, a friend of mine who has a small office want to have a configuration like this: * around 3 people can have full access to internet * around 1-2 people can just have email access (can send and receive email to any address) * the rest of the people in the company just can have internal email (can send and receive email just to/from the peer - on the same domain). I think I can use the squid to prevent the access using the browser, but what should I do to set the email configuration like that? I think I can install qmail for the MTA, but I don't know how to prevent several person just can send/receive email from the same domain, while the other can send/receive email to any address he wants to. Anybody kind enough to share how to do that? Thanks in advance for you help. -- Tanu --

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Re: [CentOS] Un Installing a hard drive in a Centos 5.1 box
by Pam Astor 17 Mar '08

17 Mar '08

----- Original Message ---- From: Karanbir Singh <mail-lists(a)karan.org> To: CentOS mailing list <centos(a)centos.org> Sent: Sunday, March 16, 2008 7:57:00 PM Subject: Re: [CentOS] Un Installing a hard drive in a Centos 5.1 box Pam Astor wrote: > [root@localhost ~]# df -h > Filesystem Size Used Avail Use% Mounted on > /dev/mapper/VolGroup00-LogVol00 > 901G 6.7G 848G 1% / > /dev/sda1 99M 18M 76M 20% /boot > tmpfs 1.9G 0 1.9G 0% /dev/shm yup, its all 1 Volume, you are going to need to shrink the lv's - then get your volgroup onto /dev/sda only. info on howto do that is in the lvm howto. also, I'd recommend you download the centos-5.1/livecd and actually do the work once booted from the livecd. shinking filesystems requires you to have the filesystem unmounted, so doing it from the livecd is the only way you are going to manage it here. Dang, I was afraid you were going to say that :) Oh well, guess I'm going to have fun the next day or two learning about linux file systems. Thanks much! -- Karanbir Singh : http://www.karan.org/ : 2522219@icq _______________________________________________ CentOS mailing list CentOS(a)centos.org http://lists.centos.org/mailman/listinfo/centos ____________________________________________________________________________________ Looking for last minute shopping deals? Find them fast with Yahoo! Search. http://tools.search.yahoo.com/newsearch/category.php?category=shopping

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