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extlinux on centos 5.2
by Jerry Geis 20 Aug '08

20 Aug '08

I am trying to use extlinux to boot a usb device. I ran the following on the device: mkdir -p /boot/extlinux extlinux /boot/extlinux cat /usr/lib/syslinux/mbr.bin > /dev/sde cp /boot/vmlinuz.latest.kernel /boot/extlinux/linux I then attempt to boot it and it starts going however I says kernel panic no root device. What have I missed. I followed the instructions in /usr/share/doc/syslinux/extlinux.doc Thanks, Jerry

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Best way to migrate a server?
by Kevin Thorpe 20 Aug '08

20 Aug '08

I was just wondering what recommendations you have on migrating a CentOS 5 install between servers? I've done similar in the past by setting up a minimal install in the new server, use tar to copy over the old install and reboot. I was thinking of rsync this time. Is that an acceptable thing to do or have I missed something important? thanks

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USB Drive is detected and but the device "/dev/sda1" is not initialized
by Balaji 20 Aug '08

20 Aug '08

Dear All, I have using CentOS 4.4 and My PC USB Drive is detected and but the device "/dev/sda1" is not initialized and i have executed the dmesg command and I am getting the following messages usb 1-6: new high speed USB device using address 2 SCSI subsystem initialized Initializing USB Mass Storage driver... scsi0 : SCSI emulation for USB Mass Storage devices Vendor: JetFlash Model: TS1GJFV30 Rev: 8.07 Type: Direct-Access ANSI SCSI revision: 02 USB Mass Storage device found at 2 usbcore: registered new driver usb-storage USB Mass Storage support registered. SCSI device sda: 1986558 512-byte hdwr sectors (1017 MB) sda: Write Protect is off sda: Mode Sense: 03 00 00 00 sda: assuming drive cache: write through SCSI device sda: 1986558 512-byte hdwr sectors (1017 MB) sda: Write Protect is off sda: Mode Sense: 03 00 00 00 sda: assuming drive cache: write through sda: Attached scsi removable disk sda at scsi0, channel 0, id 0, lun 0 and i have tried in windows xp service pack 2 system USB Drive is detected but can not opened and i am getting the following message please insert disk in drive I am not sure why this is happening. Can some one throw light on this. Regards -S.Balaji

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centos on intel D945GCLF board
by Janez Košmrlj 20 Aug '08

20 Aug '08

Hi, I am trying to install centos on the intel D945GCLF board. It's a mini-ITX board with the atom processor and it uses the Realtek RTL8102EL LAN chipset. When I disable the on-board LAN card it installs and runs OK, but when I enable it, I get kernel panic at boot. The board runs perfectlj with Fedora 9 (with the latest kernel) or with Ubuntu server. My question is: is there some way to run centos on this board (test kernel, i can try for example)?

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[Request] mod_auth_ntlm_winbind
by Morten Nilsen 20 Aug '08

20 Aug '08

http://adldap.sourceforge.net/wiki/doku.php?id=mod_auth_ntlm_winbind I have built an rpm for my own use, by grabbing the source files from sambas' web interface to cvs. It would be real neat to have it packaged and available through yum. -- Cheers, Morten :wq

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Re: [CentOS] Simple IPTABLES Question
by MHR 20 Aug '08

20 Aug '08

On Tue, Aug 19, 2008 at 5:04 PM, Kenneth Porter <shiva(a)sewingwitch.com> wrote: > --On Tuesday, August 19, 2008 10:15 AM -0500 David Dyer-Bennet > <dd-b(a)dd-b.net> wrote: > >> That's the right general approach; duplicate the drop rule but with a LOG >> target and appropriate logging parameters. > > Another approach is to create a subchain that just logs and drops (no match > rules), and in your main chain you match on the desired packet and jump to > the subchain. That eliminates the need to maintain the same match in two > places, and reduces the number of rules a non-dropped packet has to pass > through. > Could you post a sample, using the OP's example as a base? Thanks. mhr

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Where is cached memory going?
by ABBAS KHAN 20 Aug '08

20 Aug '08

As by the time, I've learned that Linux works by caching apps by using a lot of RAM and then it reallocates the new stuff by cleaning the old cached pages from memory as compared to other OSs. With 2 gigs of RAM often I see the free memory only as 100-400MB. Using TOP or PS, it doesn't look like any program or process is using excessive memory (the highest process is seen with 1-2% total memory). *So, my questions are:* what programs are using that much of memory? (or cached memory) Is that really due to a lot of cache in the memory *if yes, then, is there a way to parse the cache to findout what applications are eating up the cache?* *how to free the cached memory?* *Currently, here are the details:* Top two high mem processes only using 2.6% of RAM. [root@Ether ~]# ps aux | sort -nrk4 | head -2 abbask 5922 0.0 1.4 364300 28312 ? S Aug19 0:00 /usr/bin/python -E /usr/bin/sealert -s ntop 4914 0.0 1.2 332752 24760 ? Ssl Aug19 0:00 ntop -d -L @/etc/ntop.conf [root@Ether ~]# head -5 /proc/meminfo MemTotal: 1913856 kB MemFree: 500612 kB Buffers: 169720 kB Cached: 751000 kB SwapCached: 0 kB [root@Ether ~]# free -m total used free shared buffers cached Mem: 1869 1380 488 0 165 733 -/+ buffers/cache: 480 1388 Swap: 1983 0 1983 *Total percentage memory for all the processes, being used is 15.5% only. *[root@Ether ~]# ps aux | awk '{print $4}' | grep [0-9] | tr -s "\n" "+" | awk '{print $1 0 }' | bc 15.5* *

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nash on centos 5.2
by Jerry Geis 20 Aug '08

20 Aug '08

I am trying to use nash on centos 5.2 to demonstrate the problem I did: cd /sbin ln -sf /sbin/nash sleep export PATH=/sbin:$PATH sleep 5 and I get an error. Red Hat nash version 5.1.19.6 starting nash cannot open 5: no such file or directory Why doesnt that work? Thanks, Jerry

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Re: [CentOS] wireless laptop configuration
by Toshaan Bharvani 19 Aug '08

19 Aug '08

Sorin Srbu wrote: From: centos-bounces(a)centos.org [mailto:centos-bounces@centos.org] On Behalf Of Toshaan Bharvani Sent: Tuesday, August 19, 2008 2:42 PM To: centos(a)centos.org Subject: Re: [CentOS] wireless laptop configuration Steve Huff wrote: > > On Aug 19, 2008, at 5:04 AM, Sorin@Gmail wrote: > >> I'm using a 3Com 3CRWE154G72 IIRC, which according to the hwconf's using the >> prism54 driver/firmware/whatever. >> >> Would I maybe be better off reinstalling the whole shebang and have the >> wifi-card inserted from start in order for the centos installer to >> see it >> properly from the beginning? > > > before you do that, open a terminal, become root, and run > /usr/sbin/kudzu (while the wireless card is installed). that's the > program that does hardware detection; it may be able to sort out your > issue. > > -steve > or if kudzu for some reason doesn't cooperate (which is always on my system) become root run : /sbin/modprobe prism54 run : dmesg | tail and read whether it just says it has loaded the module (single line) or detected will output a wlanX statement and you are in business Isn’t it implied that since ”prism54” is listed in /etc/sysconfig/hwconf for the wifi-card that the module has been loaded already? Or is this some of the magical stuff that sometimes doesn’t happen for whatever reason? 8-) _______________________________________________ CentOS mailing list CentOS(a)centos.org http://lists.centos.org/mailman/listinfo/centos /etc/sysconfig/hwconf is the file kudzu creates when of all detected hardware at startup and it related this hardware with drivers in the kernel but certain drivers are modules in the kernel, wich need to be loaded manually or later when the system is already running this can be done by method 1 explained here above or adding them in /etc/modprobe.conf which makes it load the modules at startup you will need to add the line (if it is not yet there) : alias wlan0 prism54 you can check whether the module is loaded with : /sbin/lsmod | grep prism54 _________________________________________________________________ Connect to the next generation of MSN Messenger http://imagine-msn.com/messenger/launch80/default.aspx?locale=en-us&source=…

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centos 5.2 booting thumbdrive
by Jerry Geis 19 Aug '08

19 Aug '08

Anyone have instructions or have been successful in booting centos 5.2 from an thumbdrive? I have instructions for centos 4 from http://fungliding.blogspot.com/2005_04_01_fungliding_archive.html and that worked. However, it doesnt seem to be working for centos 5.2. Thanks for any tips. Jerry

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Re: [CentOS] centos on intel D945GCLF board
by Toshaan Bharvani 19 Aug '08

19 Aug '08

Janez Ko�mrlj wrote: I tried yum update and it doesn't work with the newest kernel either. That's why I'm asking about a test kernel. Brett Serkez wrote: On Tue, Aug 19, 2008 at 9:38 AM, Janez Ko�mrlj <janezkosmr(a)volja.net> wrote: � I know that disabling the LAN in BIOS works. The problem is that I need the on-board card, since I am trying to build a home router and I need 2 LAN cards for that. And the board has only one PCI slot. �� I had a similar problem with a similar Intel� MB, it didn't crash at boot, but randomly crashed at run-time. With the LAN disabled, I did a yum update and then was able to re-enable the LAN with a newer kernel.� The system has been stable for several weeks with the newer kernel. Brett _______________________________________________ CentOS mailing list CentOS(a)centos.org http://lists.centos.org/mailman/listinfo/centos � _______________________________________________ CentOS mailing list CentOS(a)centos.org http://lists.centos.org/mailman/listinfo/centos if your /sbin/lspci output looks like this please try the following : Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E PCI Express Fast Ethernet controller(rev 01) Subsystem: Intel Corporation Unknown device d607 add the rpmforge repo (instructions here : https://rpmrepo.org/RPMforge/Using) then run : yum install dkms-r1000 reboot and hope it works otherwise just download the intel linux driver from the website and compile manually against your kernel I hope to receive mine somewhere next week, will try then again and let you know _________________________________________________________________ News, entertainment and everything you care about at Live.com. Get it now! http://www.live.com/getstarted.aspx

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Re: [CentOS] wireless laptop configuration
by Toshaan Bharvani 19 Aug '08

19 Aug '08

Steve Huff wrote: > > On Aug 19, 2008, at 5:04 AM, Sorin@Gmail wrote: > >> I'm using a 3Com 3CRWE154G72 IIRC, which according to the hwconf's using the >> prism54 driver/firmware/whatever. >> >> Would I maybe be better off reinstalling the whole shebang and have the >> wifi-card inserted from start in order for the centos installer to >> see it >> properly from the beginning? > > > before you do that, open a terminal, become root, and run > /usr/sbin/kudzu (while the wireless card is installed). that's the > program that does hardware detection; it may be able to sort out your > issue. > > -steve > or if kudzu for some reason doesn't cooperate (which is always on my system) become root run : /sbin/modprobe prism54 run : dmesg | tail and read whether it just says it has loaded the module (single line) or detected will output a wlanX statement and you are in business _________________________________________________________________ Connect to the next generation of MSN Messenger http://imagine-msn.com/messenger/launch80/default.aspx?locale=en-us&source=…

2 1

wireless laptop configuration
by Kevin Kimani 19 Aug '08

19 Aug '08

Hi, I have a wireless network but no wired network. I need to access the net for the necessary installation of the wireless drivers in CentOS 5.1. Could anyone let me know how i can go about it!! My card is Intel PRO/Wireless 3945

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Problem copying files to flash drive
by MHR 19 Aug '08

19 Aug '08

I had an interesting experience this weekend backing up some flash drives to another flash drive on my CentOS 5.2 home desktop. My son had two 256MB flash drives and one 1GB flash drive that he wanted backed up onto his newer 2GB flash drive. I used rsync to copy the two smaller ones to the big one without any trouble, but when I tried to backup the 1GB files to the 2GB drive, I started getting massive "no space on disk" errors. After doing this several times, I copied to files to a directory on my hard drive and then tried to copy the files again from there to the 2GB flash drive (removing all files on the flash drive in between each iteration). Same problem. Then I did a cp -R of the directory itself from my hard drive to the flash drive, and voila! All files copied, no problems, except that now the files are in a new directory of the same name on the flash drive. The total number of files in the base directory is 171, and the total size of the files copied was a little over 500MB, so I believe that everything should have fit just fine. The commands I used that failed were 'rsync -av /media/<drive_name>/ /media/<2GB_drive_name>/' (which worked for the two smaller drives but not the bigger one), and then (after using the same command to copy the files to my hard drive), 'rsync -av ./ /media/<2GB_drive_name>/' The command that worked was 'cp -R . /media/<2GB_drive_name>/' The only thing that comes to mind is that there were a lot of files with ._xxx names on the 1GB flash drive, so I'm wondering if they just overloaded the capacity of the flash drive's FAT32 root directory name space, but I thought that limit was 512 entries, not less than 171. Any ideas? Thanks. mhr

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Boot CentOS 5 to command line
by ABBAS KHAN 19 Aug '08

19 Aug '08

Hi fellows, Pretty new to CentOS. I was trying to find a way to boot CentOS into command prompt instead of GUI (or without loading any services). Tried using 'Crl+Alt+F1' at the boot process, but, that holds the screen at mounting and doing fstab and doesn't proceed further. Is there anyother way to boot CentOS into command prompt without using Rescue option from the installation CD? Thanks. Best.

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Win2000 / Win2003 ADS dnsHostName and servicePrincipalName
by Rob Townley 18 Aug '08

18 Aug '08

Sharing my experience with SSO of Linux clients to Active Directory. Over the last 2 years or so, i had a great deal of trouble getting and _keeping_ authentication to our Win2000/Win2003 Active Directory system working from OpenSUSE and CentOS clients. ADS authentication would work until reboot, a few days, a month max. We'll see how long this lasts. Another problem was dealing with the fact that i setup dns in AD using aMixedCaseDomain.com name. Had to add all variants to the [realms] and [domain_realm] names to /etc/krb5.conf. snslatc.hp.com, snslatc.HP.com, SNSLATC.HP.COM ... Over the weekend i gave up on CentOS and tried Fedora because Fedora repositories have SaMBa 3.2, but CentOS only has 3.0. SaMBa 3.2 supports sasl sign and seal (hashing and encryption) and supports NTLMv2 better and using winbind with ADS. Still had problems with Fedora. Since i had to change the hostname in the middle of the process and update krb5.conf as mentioned above and i noticed that somehow dNSHostName in Active Directory was set to "HOST/localhost:localdomain" which clearly cannot be correct. So i used SysInternals LDAP Explorer (ADExplorer.exe) to change the entry in ActiveDirectory to remove any reference to localhost. Unless i changed /etc/hosts to not have rmonster in "127.0.0.1 localhost.localdomain localhost rmonster", deleted from WinAD and rejoined. dNSHostName: rmonster.snslatc.hp.com servicePrincipalName: CIFS/rmonster.snslatc.hp.com servicePrincipalName: CIFS/rmonster servicePrincipalName: HOST/rmonster.snslatc.hp.com servicePrincipalName: HOST/rmonster Is the line "servicePrincipalName: CIFS/rmonster.snslatc.hp.com" only required when you want your Linux box shares to show to other clients (Windows)? Successfully joined and authenticating using Fedora, but really want to use CentOS and have group policy support from likewise.

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gftp crashing on IPv6 to vsftp
by Robert Moskowitz 18 Aug '08

18 Aug '08

I am running vsftp pretty much 'out of the box', though I turned off IPv4 and have it listening on IPv6. I have stopped ip6tables, as the simple rule to enable port 21 is not allowing gftp to connect (pasv mode, I think). gftp to the IPv6 address, it connects and gets a directory listing. I am running gftp from my normal login userid, connecting to my normal login userid on the server. But when I try to download or upload a file, gftp just crashes. Nothing in /var/log on either system. Any advice?

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mirroring with LVM?
by Gordon McLellan 18 Aug '08

18 Aug '08

I'm pulling my hair out trying to setup a mirrored logical volume. lvconvert tells me I don't have enough free space, even though I have hundreds of gigabytes free on both physical volumes. Command: lvconvert -m1 /dev/vg1/iscsi_deeds_data Insufficient suitable allocatable extents for logical volume : 10240 more required Any ideas? Thanks!, Gordon Here's the output from the lvconvert with verbose and debugging turned on: # lvconvert -vvv -d -m1 /dev/vg1/iscsi_deeds_data Processing: lvconvert -vvv -d -m1 /dev/vg1/iscsi_deeds_data O_DIRECT will be used Setting global/locking_type to 1 File-based locking selected. Setting global/locking_dir to /var/lock/lvm Setting activation/mirror_region_size to 512 Getting target version for linear dm version OF [16384] dm versions OF [16384] Getting target version for striped dm versions OF [16384] Checking for existing volume group "vg1" Locking /var/lock/lvm/V_vg1 WB /dev/ramdisk: Not using O_DIRECT Opened /dev/ramdisk RW /dev/ramdisk: block size is 1024 bytes /dev/ramdisk: No label detected Closed /dev/ramdisk Opened /dev/md0 RW O_DIRECT /dev/md0: block size is 1024 bytes /dev/md0: No label detected Closed /dev/md0 Opened /dev/root RW O_DIRECT /dev/root: block size is 4096 bytes /dev/root: No label detected Closed /dev/root /dev/ram: Not using O_DIRECT Opened /dev/ram RW /dev/ram: block size is 1024 bytes /dev/ram: No label detected Closed /dev/ram Opened /dev/md1 RW O_DIRECT /dev/md1: block size is 4096 bytes /dev/md1: No label detected Closed /dev/md1 Opened /dev/dm-1 RW O_DIRECT /dev/dm-1: block size is 4096 bytes /dev/dm-1: No label detected Closed /dev/dm-1 /dev/ram2: Not using O_DIRECT Opened /dev/ram2 RW /dev/ram2: block size is 1024 bytes /dev/ram2: No label detected Closed /dev/ram2 Opened /dev/md2 RW O_DIRECT /dev/md2: block size is 4096 bytes /dev/md2: lvm2 label detected lvmcache: /dev/md2: now orphaned /dev/md2: Found metadata at 8192 size 872 for vg0 (lRcg12-Pt0L-NYUv-zJfF-GT62-UKnP-VmhtD0) lvmcache: /dev/md2: now in VG vg0 lvmcache: /dev/md2: setting vg0 VGID to lRcg12Pt0LNYUvzJfFGT62UKnPVmhtD0 lvmcache: /dev/md2: VG vg0: Set creation host to incognito.mcch.org. Closed /dev/md2 Opened /dev/dm-2 RW O_DIRECT /dev/dm-2: block size is 4096 bytes /dev/dm-2: No label detected Closed /dev/dm-2 /dev/ram3: Not using O_DIRECT Opened /dev/ram3 RW /dev/ram3: block size is 1024 bytes /dev/ram3: No label detected Closed /dev/ram3 Opened /dev/dm-3 RW O_DIRECT /dev/dm-3: block size is 4096 bytes /dev/dm-3: No label detected Closed /dev/dm-3 /dev/ram4: Not using O_DIRECT Opened /dev/ram4 RW /dev/ram4: block size is 1024 bytes /dev/ram4: No label detected Closed /dev/ram4 Opened /dev/sda4 RW O_DIRECT /dev/sda4: block size is 512 bytes /dev/sda4: lvm2 label detected lvmcache: /dev/sda4: now orphaned /dev/sda4: Found metadata at 18432 size 1715 for vg1 (rthUcY-KiTw-zqwY-Wgg7-rG54-wTmZ-UYY6zA) lvmcache: /dev/sda4: now in VG vg1 lvmcache: /dev/sda4: setting vg1 VGID to rthUcYKiTwzqwYWgg7rG54wTmZUYY6zA lvmcache: /dev/sda4: VG vg1: Set creation host to incognito.mcch.org. /dev/ram5: Not using O_DIRECT Opened /dev/ram5 RW /dev/ram5: block size is 1024 bytes /dev/ram5: No label detected Closed /dev/ram5 /dev/ram6: Not using O_DIRECT Opened /dev/ram6 RW /dev/ram6: block size is 1024 bytes /dev/ram6: No label detected Closed /dev/ram6 /dev/ram7: Not using O_DIRECT Opened /dev/ram7 RW /dev/ram7: block size is 1024 bytes /dev/ram7: No label detected Closed /dev/ram7 /dev/ram8: Not using O_DIRECT Opened /dev/ram8 RW /dev/ram8: block size is 1024 bytes /dev/ram8: No label detected Closed /dev/ram8 /dev/ram9: Not using O_DIRECT Opened /dev/ram9 RW /dev/ram9: block size is 1024 bytes /dev/ram9: No label detected Closed /dev/ram9 /dev/ram10: Not using O_DIRECT Opened /dev/ram10 RW /dev/ram10: block size is 1024 bytes /dev/ram10: No label detected Closed /dev/ram10 /dev/ram11: Not using O_DIRECT Opened /dev/ram11 RW /dev/ram11: block size is 1024 bytes /dev/ram11: No label detected Closed /dev/ram11 /dev/ram12: Not using O_DIRECT Opened /dev/ram12 RW /dev/ram12: block size is 1024 bytes /dev/ram12: No label detected Closed /dev/ram12 /dev/ram13: Not using O_DIRECT Opened /dev/ram13 RW /dev/ram13: block size is 1024 bytes /dev/ram13: No label detected Closed /dev/ram13 /dev/ram14: Not using O_DIRECT Opened /dev/ram14 RW /dev/ram14: block size is 1024 bytes /dev/ram14: No label detected Closed /dev/ram14 /dev/ram15: Not using O_DIRECT Opened /dev/ram15 RW /dev/ram15: block size is 1024 bytes /dev/ram15: No label detected Closed /dev/ram15 Opened /dev/sdb4 RW O_DIRECT /dev/sdb4: block size is 512 bytes /dev/sdb4: lvm2 label detected lvmcache: /dev/sdb4: now orphaned /dev/sdb4: Found metadata at 4608 size 1715 for vg1 (rthUcY-KiTw-zqwY-Wgg7-rG54-wTmZ-UYY6zA) lvmcache: /dev/sdb4: now in VG vg1 (rthUcYKiTwzqwYWgg7rG54wTmZUYY6zA) Opened /dev/sdc1 RW O_DIRECT /dev/sdc1: block size is 1024 bytes /dev/sdc1: No label detected Closed /dev/sdc1 /dev/sda4: lvm2 label detected /dev/sda4: Found metadata at 18432 size 1715 for vg1 (rthUcY-KiTw-zqwY-Wgg7-rG54-wTmZ-UYY6zA) /dev/sdb4: lvm2 label detected /dev/sdb4: Found metadata at 4608 size 1715 for vg1 (rthUcY-KiTw-zqwY-Wgg7-rG54-wTmZ-UYY6zA) /dev/sda4: lvm2 label detected /dev/sda4: Found metadata at 18432 size 1715 for vg1 (rthUcY-KiTw-zqwY-Wgg7-rG54-wTmZ-UYY6zA) /dev/sdb4: lvm2 label detected /dev/sdb4: Found metadata at 4608 size 1715 for vg1 (rthUcY-KiTw-zqwY-Wgg7-rG54-wTmZ-UYY6zA) Read vg1 metadata (10) from /dev/sda4 at 18432 size 1715 /dev/sda4: lvm2 label detected /dev/sda4: Found metadata at 18432 size 1715 for vg1 (rthUcY-KiTw-zqwY-Wgg7-rG54-wTmZ-UYY6zA) /dev/sdb4: lvm2 label detected /dev/sdb4: Found metadata at 4608 size 1715 for vg1 (rthUcY-KiTw-zqwY-Wgg7-rG54-wTmZ-UYY6zA) Read vg1 metadata (10) from /dev/sdb4 at 4608 size 1715 /dev/sda4 0: 0 15360: virt(0:0) /dev/sda4 1: 15360 10240: opadata(0:0) /dev/sda4 2: 25600 10240: iscsi_deeds_data(0:0) /dev/sda4 3: 35840 23040: virt(15360:0) /dev/sda4 4: 58880 160513: NULL(0:0) /dev/sdb4 0: 0 219393: NULL(0:0) Archiving volume group "vg1" metadata (seqno 10). Expiring archive /etc/lvm/archive/vg1_00005.vg Allowing allocation on /dev/sda4 start PE 58880 length 160513 Allowing allocation on /dev/sdb4 start PE 0 length 219393 Parallel PVs at LE 0 length 10240: /dev/sda4 Insufficient suitable allocatable extents for logical volume : 10240 more required Unlocking /var/lock/lvm/V_vg1 Closed /dev/sda4 Closed /dev/sdb4 Here's more of my lvm specs: # pvdisplay -v Scanning for physical volume names --- Physical volume --- PV Name /dev/sda4 VG Name vg1 PV Size 857.01 GB / not usable 1.97 MB Allocatable yes PE Size (KByte) 4096 Total PE 219393 Free PE 160513 Allocated PE 58880 PV UUID zLqW68-3oW4-Mi8H-P2ti-ltnG-WA0C-CRJS1e --- Physical volume --- PV Name /dev/sdb4 VG Name vg1 PV Size 857.01 GB / not usable 2.16 MB Allocatable yes PE Size (KByte) 4096 Total PE 219393 Free PE 219393 Allocated PE 0 PV UUID VuPgY3-kf7s-aFyO-2Nof-G2Sw-xkqN-kwjAnz --- Physical volume --- PV Name /dev/md2 VG Name vg0 PV Size 73.28 GB / not usable 29.88 MB Allocatable yes PE Size (KByte) 32768 Total PE 2344 Free PE 1844 Allocated PE 500 PV UUID tRNWez-5Yi4-ODco-2hIN-KD11-bsND-qEUxAk # vgdisplay -v Finding all volume groups Finding volume group "vg1" --- Volume group --- VG Name vg1 System ID Format lvm2 Metadata Areas 2 Metadata Sequence No 10 VG Access read/write VG Status resizable MAX LV 0 Cur LV 3 Open LV 2 Max PV 0 Cur PV 2 Act PV 2 VG Size 1.67 TB PE Size 4.00 MB Total PE 438786 Alloc PE / Size 58880 / 230.00 GB Free PE / Size 379906 / 1.45 TB VG UUID rthUcY-KiTw-zqwY-Wgg7-rG54-wTmZ-UYY6zA --- Logical volume --- LV Name /dev/vg1/virt VG Name vg1 LV UUID N47Gdi-hdHO-jH8a-oBgP-4zvp-q8Uf-zgAQc0 LV Write Access read/write LV Status available # open 0 LV Size 150.00 GB Current LE 38400 Segments 2 Allocation inherit Read ahead sectors 0 Block device 253:1 --- Logical volume --- LV Name /dev/vg1/opadata VG Name vg1 LV UUID NGL22V-JcPj-sLBf-CJaK-ps25-QCdz-EXfNK7 LV Write Access read/write LV Status available # open 1 LV Size 40.00 GB Current LE 10240 Segments 1 Allocation contiguous Read ahead sectors 0 Block device 253:2 --- Logical volume --- LV Name /dev/vg1/iscsi_deeds_data VG Name vg1 LV UUID WBwyFc-RJnp-z8Cl-hyjS-8AIT-psUc-nj64uS LV Write Access read/write LV Status available # open 1 LV Size 40.00 GB Current LE 10240 Segments 1 Allocation contiguous Read ahead sectors 0 Block device 253:3 --- Physical volumes --- PV Name /dev/sda4 PV UUID zLqW68-3oW4-Mi8H-P2ti-ltnG-WA0C-CRJS1e PV Status allocatable Total PE / Free PE 219393 / 160513 PV Name /dev/sdb4 PV UUID VuPgY3-kf7s-aFyO-2Nof-G2Sw-xkqN-kwjAnz PV Status allocatable Total PE / Free PE 219393 / 219393 Finding volume group "vg0" --- Volume group --- VG Name vg0 System ID Format lvm2 Metadata Areas 1 Metadata Sequence No 4 VG Access read/write VG Status resizable MAX LV 0 Cur LV 1 Open LV 1 Max PV 0 Cur PV 1 Act PV 1 VG Size 73.25 GB PE Size 32.00 MB Total PE 2344 Alloc PE / Size 500 / 15.62 GB Free PE / Size 1844 / 57.62 GB VG UUID lRcg12-Pt0L-NYUv-zJfF-GT62-UKnP-VmhtD0 --- Logical volume --- LV Name /dev/vg0/root VG Name vg0 LV UUID av2DIv-p1Ns-pgPW-zN8U-fHbp-tMps-Q5b8dH LV Write Access read/write LV Status available # open 1 LV Size 15.62 GB Current LE 500 Segments 1 Allocation inherit Read ahead sectors 0 Block device 253:0 --- Physical volumes --- PV Name /dev/md2 PV UUID tRNWez-5Yi4-ODco-2hIN-KD11-bsND-qEUxAk PV Status allocatable Total PE / Free PE 2344 / 1844 # lvdisplay -v Finding all logical volumes --- Logical volume --- LV Name /dev/vg1/virt VG Name vg1 LV UUID N47Gdi-hdHO-jH8a-oBgP-4zvp-q8Uf-zgAQc0 LV Write Access read/write LV Status available # open 0 LV Size 150.00 GB Current LE 38400 Segments 2 Allocation inherit Read ahead sectors 0 Block device 253:1 --- Logical volume --- LV Name /dev/vg1/opadata VG Name vg1 LV UUID NGL22V-JcPj-sLBf-CJaK-ps25-QCdz-EXfNK7 LV Write Access read/write LV Status available # open 1 LV Size 40.00 GB Current LE 10240 Segments 1 Allocation contiguous Read ahead sectors 0 Block device 253:2 --- Logical volume --- LV Name /dev/vg1/iscsi_deeds_data VG Name vg1 LV UUID WBwyFc-RJnp-z8Cl-hyjS-8AIT-psUc-nj64uS LV Write Access read/write LV Status available # open 1 LV Size 40.00 GB Current LE 10240 Segments 1 Allocation contiguous Read ahead sectors 0 Block device 253:3 --- Logical volume --- LV Name /dev/vg0/root VG Name vg0 LV UUID av2DIv-p1Ns-pgPW-zN8U-fHbp-tMps-Q5b8dH LV Write Access read/write LV Status available # open 1 LV Size 15.62 GB Current LE 500 Segments 1 Allocation inherit Read ahead sectors 0 Block device 253:0

3 2

Lightweight MTA for XEN CentOS guests
by Brett Serkez 18 Aug '08

18 Aug '08

All, For a production environment, I'd like to setup CentOS XEN guests as lightweight as possible. I'd like the XEN guests to be able to send nightly email as all CentOS servers do, but there is no reason to run a mail server as the CentOS Dom0 already has an email server running that can act as an email smart host. The options that seem most appealing to me are either ssmtp or sendmail minimally configured to only run the queuing submission agent. As far as ssmtp, I have not as yet found an CentOS RPM, presumably a Fedora RPM might be suitable. The down side of ssmtp is the lack of queuing should the smart host not be available, not likely but it is possible the email daemon could crash or be down for maintenance or other reason. As far as sendmail, it is simple to switch off the sendmail daemon and only run the queuing submission agent: 1) edit /etc/sysconfig/sendmail and set "DAEMON=no" 2) edit /etc/mail/submit.mc and set FEATURE(`msp', `[IP.of.relayhost]')dnl and of course add an alias for root. Does anyone on this list have experience running a minimal MTA? What other options/software should I be looking at? Any other insights, suggestions or insights? Both the Dom0 and guests are CentOS 5.2. Thanks in advance, Brett

5 6

Re: [CentOS] Re: DRBD 8.2 crashes CentOS 5.2 on rsync from remote host
by Toshaan Bharvani 18 Aug '08

18 Aug '08

Scott Silva wrote: > on 8-14-2008 12:55 AM Chris Miller spake the following: >> nate wrote: >>> Chris Miller wrote: >>>> I've got a pair of HA servers I'm trying to get into production. >>>> Here are some specs : >>>> >>> >>> [..] >>>> [root@haws1 ~]# BUG: unable to handle kernel paging request at >>>> virtual address c >>> >>> This typically means bad RAM >> >> While I won't rule this out, my local hardware vendor does a 48 hour >> burn-in including a full gamut of tests (including memory) before >> handing over the servers. These servers are less than two weeks old... >> >> Seems like this is a common type of error in some situations. I tried >> to boot in kexec/kdump mode (CentOS 5 replacement for diskdumputils), >> but the e1000 driver isn't seeing the NICs after a reboot via the >> "capture kernel", so I can't replicate the (rsync induced) problem >> and perform kernel debugging. I'll explore this more tomorrow. >> >> Chris > When the servers are shipped to you, do you open them and make sure > all modules are seated completely, and haven't been dislodged by the > shipping? > > > > ------------------------------------------------------------------------ > > _______________________________________________ > CentOS mailing list > CentOS(a)centos.org > http://lists.centos.org/mailman/listinfo/centos > why not try a memtest, you can download a bootable cd/usb and do a check _________________________________________________________________ News, entertainment and everything you care about at Live.com. Get it now! http://www.live.com/getstarted.aspx

2 1

finding older rpms
by Rogelio 18 Aug '08

18 Aug '08

I'm on a fairly old RHEL box, when I "cat /proc/version", I get the following: Linux version 2.4.21-4.ELsmp (bhcompile(a)daffy.perf.redhat.com) (gcc version 3.2.3 20030502 (Red Hat Linux 3.2.3-20)) At this stage, I guess I don't have 'yum', so where exactly do I get the individual RPMs? I went to DAG to find some stuff I needed, but some of the rpms at http://dag.wieers.com/rpm/packages for RHEL 3 were not available.

3 2

file manager over ssh
by Linux Man 18 Aug '08

18 Aug '08

Hello. I need to copy several file from one PC to another over Internet, both using CentOS. What file manager that works over console do you recommend me? Thanks at all Best Regards

8 11

OT NIS Question
by Clint Dilks 18 Aug '08

18 Aug '08

Hi People, I have been been using a NIS setup that I inherited for some time now and my eventual goal is to replace it with LDAP. But in the mean time I am looking at migrating some servers to new equipment and wondered if it is possible to have a single ypserv install servicing two NISDOMAINS? In this particular situation it would be a situation where for one domain the server would be a master and the other a slave. My initial research can't find anyone doing something similar. So can anyone familiar with NIS advise as to whether what I am thinking of is plausible ?

1 0

Rsync Setup
by Cheyenne Deal 18 Aug '08

18 Aug '08

I have seen many ways to setup a rsync backup but I have never got one to work on a centos machine. I have used 4.5 and 5.0 If anyone could point me in the right direction, much thanks. Cheyenne

2 1

FSID and NFS
by Mag Gam 17 Aug '08

17 Aug '08

What is the purpose of FSIDs? I am exporting 30 volumes via NFS. Do I need a FSID option? TIA

2 2

Confusing output from pvdisplay
by Stephen Harris 17 Aug '08

17 Aug '08

/dev/md3 is a raid5 array consisting of 4*500Gb disks pvs and pvscan both display good info: % pvscan | grep /dev/md3 PV /dev/md3 VG RaidDisk lvm2 [1.36 TB / 0 free] % pvs /dev/md3 PV VG Fmt Attr PSize PFree /dev/md3 RaidDisk lvm2 a- 1.36T 0 But pvdisplay... % pvdisplay /dev/md3 --- Physical volume --- PV Name /dev/md3 VG Name RaidDisk PV Size 1024.00 GB / not usable 8192.00 EB Allocatable yes (but full) PE Size (KByte) 4096 Total PE 357702 Free PE 0 Allocated PE 357702 PV UUID tXGBfv-mfhF-FEXV-hjOG-saIz-iAhA-vZ62DW The "PV Size" line is very odd, indeed! My other lvm disk (/dev/md4) looks just fine: % pvdisplay /dev/md4 --- Physical volume --- PV Name /dev/md4 VG Name Mirror PV Size 267.36 GB / not usable 3.50 MB Allocatable yes PE Size (KByte) 4096 Total PE 68444 Free PE 4352 Allocated PE 64092 PV UUID Bav2oP-nlZB-f6H3-XBow-iIde-AqKI-a0JyYk Any ideas on why "PV Size" looks so broken on md3 ? -- rgds Stephen

1 0

Help setting up external drive via Firewire
by Noob Centos Admin 17 Aug '08

17 Aug '08

I got a WD 1TB My Book with eSATA/USB/Firewire400 connectivity to backup data on a client Centos 5.1 machine. USB 2.0 works fine out of the box but is rather slow, Nautilus predicts about 1+ hour to fully backup just one day's worth of data or about 100GB. So I was hoping Firewire would be faster, which is why we got the version with all 3 interfaces to experiment with first. Following the suggestions given to another user here http://www.centos.org/modules/newbb/viewtopic.php?topic_id=15767&forum=37 I updated the system's kernel to the CentoPlus [noob@localhost ~]$ uname -s -r Linux 2.6.18-92.1.10.el5 After a reboot, everything appears to work as expected, with the motherboard's TI Firewire controller detected [root@localhost ~]# lspci | grep 1394 04:07.0 FireWire (IEEE 1394): Texas Instruments TSB43AB23 IEEE-1394a-2000 Controller (PHY/Link) However, now I'm stuck as the system does not appear to detect the drive when I connect the firewire cable and turn it on. I've followed some of the suggestions to check the drive status like "fdisk -l" but this only shows the drives already installed in the system "tail -f /var/log/dmesg" shows no new messages when the drive is connected/powered on So I'm at a loss as to what else I should be doing to get Firewire to work and will appreciate any help on this. Thanks!

8 16

Writable Centos LiveCD on Embeded Linux?
by Oliver Schulze L. 17 Aug '08

17 Aug '08

Hi all, I was wondering if it possible to have a Centos LiveCD installation boot from a Compact Flash in a embeded x86 (Wrap/Alix) platform *and* be able to save the changes made to the File System back to the Flash memory. So, the next time the LiveCD boots it will have all the changes made. The problem I'm trying yo solve is: - fast boot time - fast recovery when the Linux is shutdown improperly (power failure, etc) - be able to upgrade some rpm packages via yum Will a LiveCD (squash/union FS) be a better solution than booting Centos directly from an ext2(fewer I/O than ext3) partition? Many thanks in advance Oliver -- Oliver Schulze L. Asuncion - Paraguay http://tinymailto.com/oliver

3 6

mirror.centos.org down?
by nethub 17 Aug '08

17 Aug '08

I'm getting a server failure for mirror.centos.org. Is anyone else having trouble? Nameserver trace for mirror.centos.org: * Looking for who is responsible for root zone and followed g.root-servers.net. * Looking for who is responsible for org and followed d0.org.afilias-nst.org. * Looking for who is responsible for centos.org and followed ns3.centos.org. * Looking for who is responsible for mirror.centos.org and followed pdns1.centos.org. Nameservers for mirror.centos.org: * pdns1.centos.org returned (SERVFAIL) * pdns2.centos.org returned (SERVFAIL) * pdns3.centos.org returned (SERVFAIL) * pdns4.centos.org returned (SERVFAIL)

2 1

learning centos
by pedro henrique antunes de oliveira 16 Aug '08

16 Aug '08

Hello, I'm new to CENTOS and I'd like to learn how to use it from ground up. Can anyone recommend me books on it? I already have the documentation from the web site, can I start with it? I've already done very basic stuff on archlinux and slackware.

6 7

Hard disk, format, filesystem
by Jussi Hirvi 16 Aug '08

16 Aug '08

Ok, I give up... I have to ask. This is CentOS 5. I switched one of my raid1 disks, and I already thought I had succeeded. But now it seems that something is very wrong with the first partition on the new disk. Luckily my system is fully bootable with the other disk. Here's some info. The new disk is sdb. // I removed all partitions with parted, and created the first one again. // parted does not complain: [root@mail dev]# parted sdb Using /dev/sdb (parted) print Model: ATA SAMSUNG HD321KJ (scsi) Disk /dev/sdb: 320GB Sector size (logical/physical): 512B/512B Partition Table: msdos Number Start End Size Type File system Flags 1 0.51kB 101MB 101MB primary ext2 (parted) rm 1 (parted) mkpart primary 1 100 (parted) print Model: ATA SAMSUNG HD321KJ (scsi) Disk /dev/sdb: 320GB Sector size (logical/physical): 512B/512B Partition Table: msdos Number Start End Size Type File system Flags 1 0.51kB 100MB 100MB primary ext2 (parted) quit // If I try to create a file system on the new partition, // I get an error message: [root@mail dev]# mkfs ext3 sdb1 mke2fs 1.39 (29-May-2006) mkfs.ext2: invalid blocks count - sdb1 // I cannot create a volume label: [root@mail dev]# e2label sdb1 /mnt/mirror [root@mail dev]# e2label sdb1 [root@mail dev]# //fsck informs me like this: [root@mail dev]# e2fsck sdb1 e2fsck 1.39 (29-May-2006) The filesystem size (according to the superblock) is 77392578 blocks The physical size of the device is 24414 blocks Either the superblock or the partition table is likely to be corrupt! Abort<y>? yes // I even tried fsck using the secondary (or tertiary) superblock // but no success. So now what? Apart from doing a low-level format. - Jussi -- Jussi Hirvi * Green Spot Topeliuksenkatu 15 C * 00250 Helsinki * Finland Tel. & fax +358 9 493 981 * Mobile +358 40 771 2098 (only sms) jussi.hirvi(a)greenspot.fi * http://www.greenspot.fi

3 6

kickstart and 5.2 x86_64 giving errors.
by Jerry Geis 16 Aug '08

16 Aug '08

When I use my kickstart file (which works on 5.1 x86_64) with 5.2 I get the following error. I put my kickstart file at the end. Do I have something incomaptible in the file? jerry -------------------------------------- Traceback (most recent call first): File "/usr/lib/anaconda/network.py", line 341, in lookupHostname ret = isys.pumpNetDevice(dev.get('device'), dev.get('dhcpclass')) File "/usr/lib/anaconda/network.py", line 531, in write ip = self.lookupHostname() File "/tmp/treedir.1828/instimage/usr/lib/anaconda/yuminstall.py", line 1401, in doPreInstall anaconda.id.network.write(anaconda.rootPath) File "/tmp/treedir.1828/instimage/usr/lib/anaconda/backend.py", line 180, in doPreInstall anaconda.backend.doPreInstall(anaconda) File "/usr/lib/anaconda/dispatch.py", line 201, in moveStep rc = stepFunc(self.anaconda) File "/usr/lib/anaconda/dispatch.py", line 124, in gotoNext self.moveStep() File "/usr/lib/anaconda/gui.py", line 1018, in nextClicked self.anaconda.dispatch.gotoNext() File "/usr/lib/anaconda/iw/progress_gui.py", line 243, in renderCallback self.intf.icw.nextClicked() File "/usr/lib/anaconda/gui.py", line 1045, in handleRenderCallback self.currentWindow.renderCallback() AttributeError: 'module' object has no attribute 'pumpNetDevice' Local variables in innermost frame: self: <network.Network instance at 0x2aeccea6c638> myns: 10.0.2.3 dev: DEVICE=eth0 BOOTPROTO=dhcp DHCPCLASS= HWADDR=52:54:00:12:34:56 ONBOOT=yes ------------------ # Kickstart file automatically generated by anaconda. auth --useshadow --enablemd5 install cdrom lang en_US.UTF-8 langsupport --default en_US.UTF-8 en_US.UTF-8 # Clear the Master Boot Record zerombr firstboot --disabled keyboard us xconfig --startxonboot network --device eth0 --bootproto dhcp --hostname MessageNet.msgnet.com rootpw mnkickstart firewall --enabled --http --ssh --smtp authconfig --enableshadow --enablemd5 selinux --disabled timezone --utc America/Indiana/Indianapolis %include /tmp/partition-information %pre #!/bin/sh ##Â genericÂ scriptÂ toÂ pickÂ hda, sda, or RAID 1 # -a "`cat /proc/ide/hda/media`"Â =Â "disk"Â ] HD1="/dev/sda" HD1SHORT="sda" HD2="/dev/sdb" HD2SHORT="sdb" if [ -e /proc/ide/hda/media ] then if [ "`cat /proc/ide/hda/media`" == "disk" ] then HD1="/dev/hda" HD1SHORT="hda" HD2="/dev/hdb" HD2SHORT="hdb" fi fi ## Determine size of harddisk HD1SIZE=`fdisk -l $HD1 | grep Disk | cut -f 3 -d ' ' | cut -f 1 -d '.'` if [ $HD1SIZE -le 20 ] then ROOTSIZE=10000 SWAPSIZE=1000 else ROOTSIZE=20000 SWAPSIZE=4000 fi ##Â Save partitioning information into file so include section can grab it. echo "bootloader --location=mbr --driveorder=$HD1SHORT --append=\"rhgb quiet\" " > /tmp/partition-information echo "clearpart --all --initlabel " >> /tmp/partition-information echo "part / --ondisk=$HD1SHORT --fstype ext3 --size=$ROOTSIZE --asprimary " >> /tmp/partition-information echo "part swap --ondisk=$HD1SHORT --size=$SWAPSIZE --asprimary " >> /tmp/partition-information echo "part /home --ondisk=$HD1SHORT --fstype ext3 --size=1 --asprimary --grow " >> /tmp/partition-information %packages @development-libs @editors @x-software-development @gnome-desktop @dialup @core @base @ftp-server @legacy-software-development @base-x @web-server @smb-server @printing @mail-server @sound-and-video @development-tools @graphical-internet mesa-libGLU-devel device-mapper-multipath xorg-x11-server-Xnest xorg-x11-server-Xvfb imake -sysreport %post # Install is complete show the post progress. init 3 chvt 3 # Echo the type of install we are doing cat /proc/cmdline > /tmp/MN_server echo "Change RunLevel boot console mode..." sed -i s'/id:5:/id:3:/'g /etc/inittab echo "Setting up nameserver" echo nameserver 65.24.0.168 > /etc/resolv.conf echo nameserver 65.24.0.169 >> /etc/resolv.conf service network restart yum -y update yum -y install vnc yum -y install tftp yum -y install tftp-server yum -y install sendmail-cf yum -y install dhcp yum -y install ncurses-devel yum -y install compat-openldap yum -y install libxml2 yum -y install libxml2-devel yum -y install lsscsi yum -y install alsa-lib-devel yum -y install alsa-lib-devel.i386 echo "" echo "Kickstart installation complete - reboot"

1 0

can't get Ethernet SNMP information
by Rudi Ahlers 16 Aug '08

16 Aug '08

Hi all, I hope someone can help me with this one. I'm trying to graph all traffic on the localhost's network card with Cacti. >From what I understand I should use SNMP to query the traffic, but I can't seem to get SNMP info for the network interface. I have installed all the necessary snmp tools, "yum install snmpd net-snmp net-snmp-utils net-snmp-devel net-snmpt-libs " and then started snmpd (/etc/init.d/snmpd start) running snmpwalk, I get the following: snmpwalk -v 1 -c public localhost SNMPv2-MIB::sysDescr.0 = STRING: Linux localhost 2.6.18-92.1.10.el5xen #1 SMP Tue Aug 5 08:11:18 EDT 2008 x86_64 SNMPv2-MIB::sysObjectID.0 = OID: NET-SNMP-MIB::netSnmpAgentOIDs.10 DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (127237) 0:21:12.37 SNMPv2-MIB::sysContact.0 = STRING: Rudi Ahlers <root@localhost> SNMPv2-MIB::sysName.0 = STRING: localhost SNMPv2-MIB::sysLocation.0 = STRING: IS SNMPv2-MIB::sysORLastChange.0 = Timeticks: (6) 0:00:00.06 SNMPv2-MIB::sysORID.1 = OID: SNMPv2-MIB::snmpMIB SNMPv2-MIB::sysORID.2 = OID: TCP-MIB::tcpMIB SNMPv2-MIB::sysORID.3 = OID: IP-MIB::ip SNMPv2-MIB::sysORID.4 = OID: UDP-MIB::udpMIB SNMPv2-MIB::sysORID.5 = OID: SNMP-VIEW-BASED-ACM-MIB::vacmBasicGroup SNMPv2-MIB::sysORID.6 = OID: SNMP-FRAMEWORK-MIB::snmpFrameworkMIBCompliance SNMPv2-MIB::sysORID.7 = OID: SNMP-MPD-MIB::snmpMPDCompliance SNMPv2-MIB::sysORID.8 = OID: SNMP-USER-BASED-SM-MIB::usmMIBCompliance SNMPv2-MIB::sysORDescr.1 = STRING: The MIB module for SNMPv2 entities SNMPv2-MIB::sysORDescr.2 = STRING: The MIB module for managing TCP implementations SNMPv2-MIB::sysORDescr.3 = STRING: The MIB module for managing IP and ICMP implementations SNMPv2-MIB::sysORDescr.4 = STRING: The MIB module for managing UDP implementations SNMPv2-MIB::sysORDescr.5 = STRING: View-based Access Control Model for SNMP. SNMPv2-MIB::sysORDescr.6 = STRING: The SNMP Management Architecture MIB. SNMPv2-MIB::sysORDescr.7 = STRING: The MIB for Message Processing and Dispatching. SNMPv2-MIB::sysORDescr.8 = STRING: The management information definitions for the SNMP User-based Security Model. SNMPv2-MIB::sysORUpTime.1 = Timeticks: (6) 0:00:00.06 SNMPv2-MIB::sysORUpTime.2 = Timeticks: (6) 0:00:00.06 SNMPv2-MIB::sysORUpTime.3 = Timeticks: (6) 0:00:00.06 SNMPv2-MIB::sysORUpTime.4 = Timeticks: (6) 0:00:00.06 SNMPv2-MIB::sysORUpTime.5 = Timeticks: (6) 0:00:00.06 SNMPv2-MIB::sysORUpTime.6 = Timeticks: (6) 0:00:00.06 SNMPv2-MIB::sysORUpTime.7 = Timeticks: (6) 0:00:00.06 SNMPv2-MIB::sysORUpTime.8 = Timeticks: (6) 0:00:00.06 HOST-RESOURCES-MIB::hrSystemUptime.0 = Timeticks: (130862) 0:21:48.62 End of MIB Yet, when I try and query the "SNMP - Interface Statistics", it doesn't return any information. Running debug for the interface in Cacti, I get the following: + Running data query [1]. + Found type = '3' [snmp query]. + Found data query XML file at '/var/www/html/graphs/resource/snmp_queries/interface.xml' + XML file parsed ok. + Executing SNMP walk for list of indexes @ '.1.3.6.1.2.1.2.2.1.1' + No SNMP data returned + Found data query XML file at '/var/www/html/graphs/resource/snmp_queries/interface.xml' + Found data query XML file at '/var/www/html/graphs/resource/snmp_queries/interface.xml' + Found data query XML file at '/var/www/html/graphs/resource/snmp_queries/interface.xml' Can someone please help me with this one? -- Kind Regards Rudi Ahlers

5 19

CentOS-announce Digest, Vol 42, Issue 5
by centos-announce-request＠centos.org 16 Aug '08

16 Aug '08

Send CentOS-announce mailing list submissions to centos-announce(a)centos.org To subscribe or unsubscribe via the World Wide Web, visit http://lists.centos.org/mailman/listinfo/centos-announce or, via email, send a message with subject or body 'help' to centos-announce-request(a)centos.org You can reach the person managing the list at centos-announce-owner(a)centos.org When replying, please edit your Subject line so it is more specific than "Re: Contents of CentOS-announce digest..." Today's Topics: 1. Re: CESA-2008:0818 Moderate CentOS 5 x86_64 hplip Update (Karanbir Singh) 2. Re: CESA-2008:0818 Moderate CentOS 5 i386 hplip Update (Karanbir Singh) ---------------------------------------------------------------------- Message: 1 Date: Fri, 15 Aug 2008 17:55:35 +0100 From: Karanbir Singh <kbsingh(a)centos.org> Subject: Re: [CentOS-announce] CESA-2008:0818 Moderate CentOS 5 x86_64 hplip Update To: centos-announce(a)centos.org Message-ID: <48A5B507.3040100(a)centos.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Karanbir Singh wrote: > CentOS Errata and Security Advisory 2008:0818 Moderate > > Upstream details at : https://rhn.redhat.com/errata/RHSA-2008-0818.html > > The following updated files have been uploaded and are currently > syncing to the mirrors: ( md5sum Filename ) > > x86_64: > cfcd76e57b844ea28a53de43f9262cb4 postfix-2.3.3-2.1.el5_2.x86_64.rpm > 7bebb4b9264b5ceac8c736c75a95155b postfix-pflogsumm-2.3.3-2.1.el5_2.x86_64.rpm > > Source: > bf3130ae011fc9d69bcd43a8c29d4811 postfix-2.3.3-2.1.el5_2.src.rpm > > Obviously, the package set mentioned here is incorrent. The correct update announcement will go out in a few hours time. Apologies for this messup. - KB ------------------------------ Message: 2 Date: Fri, 15 Aug 2008 17:56:08 +0100 From: Karanbir Singh <kbsingh(a)centos.org> Subject: Re: [CentOS-announce] CESA-2008:0818 Moderate CentOS 5 i386 hplip Update To: centos-announce(a)centos.org Message-ID: <48A5B528.7090206(a)centos.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Karanbir Singh wrote: > CentOS Errata and Security Advisory 2008:0818 Moderate > > Upstream details at : https://rhn.redhat.com/errata/RHSA-2008-0818.html > > The following updated files have been uploaded and are currently > syncing to the mirrors: ( md5sum Filename ) > > i386: > 12ed57905be0034361f4357f7ebfb580 postfix-2.3.3-2.1.el5_2.i386.rpm > 5f45b128714174964caf8b5633d9723f postfix-pflogsumm-2.3.3-2.1.el5_2.i386.rpm > > Source: > bf3130ae011fc9d69bcd43a8c29d4811 postfix-2.3.3-2.1.el5_2.src.rpm > > Obviously, the package set mentioned here is incorrect. The correct update announcement will go out in a few hours time. Apologies for this messup. - KB ------------------------------ _______________________________________________ CentOS-announce mailing list CentOS-announce(a)centos.org http://lists.centos.org/mailman/listinfo/centos-announce End of CentOS-announce Digest, Vol 42, Issue 5 **********************************************

1 0

WUBI like process for CentOS ?
by Karanbir Singh 15 Aug '08

15 Aug '08

Hi, Over the last few days a couple of people have asked about WUBI liks process for CentOS. I've had to look up what WUBI is ( to save you time : http://en.wikipedia.org/wiki/Wubi_(Ubuntu) ) . Now the question: is there anyway to get something similar for CentOS ? or is there a process that someone might follow to achieve the same or similar result ? - KB

8 13

CentOS-announce Digest, Vol 42, Issue 4
by centos-announce-request＠centos.org 15 Aug '08

15 Aug '08

Send CentOS-announce mailing list submissions to centos-announce(a)centos.org To subscribe or unsubscribe via the World Wide Web, visit http://lists.centos.org/mailman/listinfo/centos-announce or, via email, send a message with subject or body 'help' to centos-announce-request(a)centos.org You can reach the person managing the list at centos-announce-owner(a)centos.org When replying, please edit your Subject line so it is more specific than "Re: Contents of CentOS-announce digest..." Today's Topics: 1. CESA-2008:0839 Moderate CentOS 3 i386 postfix - security update (Tru Huynh) 2. CESA-2008:0839 Moderate CentOS 3 x86_64 postfix - security update (Tru Huynh) 3. CESA-2008:0839 Moderate CentOS 5 i386 postfix Update (Karanbir Singh) 4. CESA-2008:0839 Moderate CentOS 5 x86_64 postfix Update (Karanbir Singh) 5. CESA-2008:0818 Moderate CentOS 5 i386 hplip Update (Karanbir Singh) 6. CESA-2008:0818 Moderate CentOS 5 x86_64 hplip Update (Karanbir Singh) ---------------------------------------------------------------------- Message: 1 Date: Fri, 15 Aug 2008 11:43:49 +0200 From: Tru Huynh <tru(a)centos.org> Subject: [CentOS-announce] CESA-2008:0839 Moderate CentOS 3 i386 postfix - security update To: centos-announce(a)centos.org Message-ID: <20080815094349.GA28145(a)sillage.bis.pasteur.fr> Content-Type: text/plain; charset="us-ascii" CentOS Errata and Security Advisory CESA-2008:0839 postfix security update for CentOS 3 i386: https://rhn.redhat.com/errata/RHSA-2008-0839.html The following updated file has been uploaded and is currently syncing to the mirrors: i386: updates/i386/RPMS/postfix-2.0.16-14.1.RHEL3.i386.rpm source: updates/SRPMS/postfix-2.0.16-14.1.RHEL3.src.rpm You may update your CentOS-3 i386 installations by running the command: yum update postfix Tru -- Tru Huynh (mirrors, CentOS-3 i386/x86_64 Package Maintenance) http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xBEFA581B

1 0

question between centos 4.6 i586 and denian edge
by Jerry Geis 15 Aug '08

15 Aug '08

I have a strange situation. I am using centos 4.6 i586 with alsa 1.0.17 and asterisk 1.4.21.1 (only the console/dsp or soudn port). running centos 4.6 asterisk will seg fault after awhile. running debian edge with the same installed packages it does not seg fault. running x86_64 centos 4.6 and 5.2 asterisk does not seg fault. What might be going on with centos i586 that it is causing asterisk to seg fault? Any ideas? Another thing I tried is put 2.6.24.4 on centos 4.6 (debian edge runs 2.6.18) I then re-installed my packages. Still the asterisk on centos seg faults. Asterisk is heavy in threads is this some problem? Any solution to that? Thanks for any ideas. Jerry

2 1

df to get total disk usage on all filesystems?
by Sean Carolan 14 Aug '08

14 Aug '08

Is there a flag for the df command to get the total disk space used on all filesystems as one number? I have a server with a lot of mounted shares. I'm looking for a simple way to measure rate of data growth across all shares as one total value.

9 18

Re: [CentOS] Checking last shutdown state
by Brent L. Bates 14 Aug '08

14 Aug '08

Does your UPS software have any logging capabilities? I know APC's PowerChute+ software logs everything it does. There would be an entry in it's logs saying it was doing a clean shutdown. The system logs may also have something about the time the system shutdown too. -- Brent L. Bates (UNIX Sys. Admin.) M.S. 912 Phone:(757) 865-1400, x204 NASA Langley Research Center FAX:(757) 865-8177 Hampton, Virginia 23681-0001 Email: B.L.BATES(a)larc.nasa.gov http://www.vigyan.com/~blbates/

3 3

Checking last shutdown state
by Joseph L. Casale 14 Aug '08

14 Aug '08

How do I check the last shutdown, or any if possible for the status related to whether or not it was clean? I need to know if a UPS had successfully shut a few boxes down. Thanks! jlc

2 2

RE: [CentOS] What is vibr0 Network interface and what is it used for
by Trevor Benson 14 Aug '08

14 Aug '08

Sorry missed the answer you provided the first time. T

1 0

RE: [CentOS] What is vibr0 Network interface and what is it used for
by Trevor Benson 14 Aug '08

14 Aug '08

My first guess would be a Virtual Bridge 0 interface. Did you decide to install Xen during the 5.2 installation? If so then it would automatically start up its network bridge to connect your Xen Guests to your local network (if you mapped the Xen Guest interface to work on this bridge). Trevor > -----Original Message----- > From: centos-bounces(a)centos.org [mailto:centos-bounces@centos.org] On > Behalf Of Ivan Varbanov > Sent: Thursday, August 14, 2008 12:06 AM > To: CentOS mailing list > Subject: Re: [CentOS] What is vibr0 Network interface and what is it > used for > > It comes from virtual bridge (if you use vm,xen ...). > > On Wed, Aug 13, 2008 at 7:54 AM, Lunix1618 <lunix1618(a)gmail.com>wrote: > Hello, > > I have see that my machine have an interface that named virbr0. I have > no idea what is it and what it using for ? I am not configured any IP > address for it but I see it had an IP address and see it listed in > firewall config. > Can anyone give me an explanation about this or point me to a document > that describe it ? > > My machine running CentOS 5.2 and do not have internet connection from > the installation time. > > Thanks, > > > virbr0 Link encap:Ethernet HWaddr 00:00:00:00:00:00 inet > addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0 > inet6 addr: fe80::200:ff:fe00:0/64 Scope:Link > UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 > RX packets:0 errors:0 dropped:0 overruns:0 frame:0 > TX packets:35 errors:0 dropped:0 overruns:0 carrier:0 > collisions:0 txqueuelen:0 > RX bytes:0 (0.0 b) TX bytes:9143 (8.9 KiB) > > _______________________________________________ > CentOS mailing list > CentOS(a)centos.org > http://lists.centos.org/mailman/listinfo/centos > > > > > > > __________ Information from ESET NOD32 Antivirus, version of virus > signature database 2806 (20080118) __________ > > The message was checked by ESET NOD32 Antivirus. > > http://www.eset.com >

1 0

RE: [CentOS] [OT] VPN/DMZ best practices
by Trevor Benson 14 Aug '08

14 Aug '08

> There is such a wealth of knowledge and personal experience on this > list > that I'd like to get your opinions on our current situation. > > Currently, we have a simple tri-homed firewall with the internal > network <snip> > 1. What are your recommendations for where the vpn (openvpn on linux) > appliance should reside? In the dmz? Internally and configure the > firewall to allow (and nat) vpn connections? On the unused interface > in > a different dmz than our hosting software? Somewhere else? For basics regarding your environment if Linux is your firewall gateway appliance and you have multiple internal networks behind it, then openvpn on the gateway is the simplest most effective way to connect the networks. Ssl vpn's can be behind network gateway devices, but then depending on the type of connection between sites (site to site or road warrior) you may need to configure additional routes on the gateway or each machine to return traffic. If its on the gateway for your networks then that box decides how to route it out properly. > 2. Should I abandon the single firewall approach and instead use two > firewalls in a more traditional setup (gateway firewall -> dmz -> > internal firewall)? If so, where should the vpn appliance go? We do VPN's, Firewalls, and security for quite a few collocations and companies. Rarely is a company so security conscious that they want multiple layers of firewalls, and the complexity that can bring to the environment. Usually those that do have the staff on hand to troubleshoot complex networks as they need to adjust things. Not to say that this isn't done, many people do, but does your environment necessitate this level of security? If not lets stick to the single device approach. > I'll probably have more questions based on your answers and I look > forward to the responses. Thanks. > _______________________________________________ > CentOS mailing list > CentOS(a)centos.org > http://lists.centos.org/mailman/listinfo/centos

1 0

[OT] VPN/DMZ best practices
by Scott McClanahan 14 Aug '08

14 Aug '08

There is such a wealth of knowledge and personal experience on this list that I'd like to get your opinions on our current situation. Currently, we have a simple tri-homed firewall with the internal network on one interface, the dmz on another, and the dirty internet on the last. Also, there is a spare interface on the box which is unused. We use CentOS and manually maintain our rule sets and routes since it's not really that complex. I'd like to setup a vpn connection between our office and a remote office, as well as, allow remote users to vpn into there desktops and map samba shares. I would prefer to tie in the openvpn software with our internal openldap server. Our dmz is currently not in use at all but will be soon, hosting our software. Having said all of this, what insights do you have for the following: 1. What are your recommendations for where the vpn (openvpn on linux) appliance should reside? In the dmz? Internally and configure the firewall to allow (and nat) vpn connections? On the unused interface in a different dmz than our hosting software? Somewhere else? 2. Should I abandon the single firewall approach and instead use two firewalls in a more traditional setup (gateway firewall -> dmz -> internal firewall)? If so, where should the vpn appliance go? I'll probably have more questions based on your answers and I look forward to the responses. Thanks.

1 0

Firewall/Proxy with time window access control
by Lunix1618 14 Aug '08

14 Aug '08

Hello all, I have to setup a system that required to block users access internet in work time but let them access internet on specified time window e.g lunch time. I plan to use iptables and squid to do block and web caching but I have no idea how to control access on time frame. Could any one of you experienced with this can give some starting point /document/howto start reading ? My firewal/proxy box will be CentOS 5.2 so I prefer something that can install via yum/rpm Thanks in advance!

5 5

NFS not syncing until directory viewed.
by andylockran 14 Aug '08

14 Aug '08

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Guys, Having a weird problem with NFS. We have two web-servers under a load balanced system. Web1 and Web2. Currently all files are hosted in Web1, and we use NFS exports to share the files with Web2. Up until recently this was working fine (two/three weeks ago). However, it's starting to behave a little randomly. When a file is uploaded, it appears on Web1, yet is not accessible when browsing the Web2 server. Weirdly though, when I log into the Web2 server to check if it's there, it does appear there with correct timestamp et al.. The funny thing is, that after I check it's on Web2.. it then starts to work thorough the browser. So simply logging in and checking it's there must give it a kick of some sort. If anyone else can give me advice on how to resolve this, it would be much appreciated. Regards, Andy -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQFIpAx8auMjEM4rxIQRAuPQAJ41JGA98CIbP8hFIVhVma50mXQOzgCgiZVa ilBmX+CY1ZChtUVvZqP45mY= =9N4b -----END PGP SIGNATURE-----

1 0

What is vibr0 Network interface and what is it used for
by Lunix1618 14 Aug '08

14 Aug '08

Hello, I have see that my machine have an interface that named virbr0. I have no idea what is it and what it using for ? I am not configured any IP address for it but I see it had an IP address and see it listed in firewall config. Can anyone give me an explanation about this or point me to a document that describe it ? My machine running CentOS 5.2 and do not have internet connection from the installation time. Thanks, virbr0 Link encap:Ethernet HWaddr 00:00:00:00:00:00 inet addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0 inet6 addr: fe80::200:ff:fe00:0/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:35 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:9143 (8.9 KiB)

3 3

how to create whole image
by kapil singh 14 Aug '08

14 Aug '08

Hello, I am using Cent OS 5.2 . i want to create one master image of whole running OS becoz i have to do same installation many times on different machines. so any one suggest me to how create and run the image of whole OS at the time of installation or , which escape me to install each and every thing many times. i would not like to create image using dd. any suggestions ?? - - Thanks and Regards Kapil Singh Kushwah Linux System/Network Administrator Hotwax Media Inc. Indore,(M.P) INDIA

7 8

Boot from degraded sw RAID 1
by Eduardo Grosclaude 14 Aug '08

14 Aug '08

OK, this is probably long, and your answer will surely make me slap my forehead really hard... please help me understand what goes on. I intend to install CentOS 5.1 afresh over software RAID level 1. SATA drives are in AHCI mode. I follow basically [1] though I have made some mistakes as will be explained. AFAIK GRUB does not boot off LVM, so I: 1. Build a 100MB RAID-type partition on each disk 2. Build a second RAID-type partition taking the remaining space on each disk 3. Build a RAID 1 device over the small partitions 4. Build a second RAID 1 device over the bigger ones 5. Declare /boot as ext3 to live on the smaller RAID 1 device 6. Declare an LVM PV to live on the bigger one 7. Build a VG on the PV, then build LVs for swap, / and /data on the VG Only problem is, I numbly have failed to follow [1] in that I left Disk Druid to make partitions wherever it chooses, so now I have cross-named partitions... md0 is the bigger RAID 1 device with /dev/sda2 AND /dev/sdb1... and md1 is the smaller one with /dev/sda1 AND /dev/sdb2. Oh well, things can't get complicated on this, I tell myself. Installation goes on well, system boots. I update the system. Now I want to be able to boot from whichever disk survives an accident. If I take out sdb, system boots. If I take out sda, system refuses to work. Aha. GRUB is not installed into sdb's MBR. Reconnect sda, reboot. Prepare for GRUB device juggling as in [1]. Into GRUB console I do > find /grub/stage1 hd(0,0) hd(1,1) > device (hd0) /dev/sdb > root (hd0,1) Filesystem type is ext2fs, partition type 0xfd > setup (hd0) Checking if "/boot/grub/stage1" exists... no Checking if "/grub/stage1" exists... yes Checking if "/grub/stage2" exists... yes Checking if "/grub/e2fs_stage1_5" exists... yes Running "embed /grub/e2fs_stage1_5 (hd0)"... 15 sectors are embedded. succeeded Running "install /grub/stage1 (hd0) (hd0)1+15 p (hd0,1)/grub/stage2 /grub/grub .conf"... succeeded Done. > quit The rationale for this being that, when the faulty disk is removed at boot, the remaining one (currently /dev/sdb) will be addressed as /dev/sda (i.e. hd0 in GRUB parlance). Now I prune /dev/sda and reboot. I see: root(hd0,0) <----------------------------------------------- interesting Filesystem type unknown, partition type 0xfd kernel /vmlinuz-2.6........ ro root=/dev/VolGroup00/LogVol01 rhgb quiet Error 17: Cannot mount selected partition Press any key to continue... Not quite what I expected. I enter GRUB console at boot and repeat the above device juggling. > find /grub/stage1 hd(0,1) > root (hd0,1) > setup (hd0) > quit However, 'quit' seems to fail as grub keeps prompting me without really quitting. After a forced reboot I get the very same error message as above. I edit the GRUB configuration entry at boot (with e command) and see root (hd0,0) as the first line It should be root(hd0,1), so probably GRUB did not write down my modifications. I edit it to read so (e command again), and then boot (b command). Now it works. I rebuild the arrays succesfully. However, I have made a one-time edit and the problem is still there. I understand the error message from the booting process was reasonable: hd(0,0) carries an unknown filesystem -- an LVM device. [1] was right, you definitely want to have exact disk duplicates to keep your life simple. However, I can't see why it shouldn't work the way it is. I can probably rebuild the secondary disk to mimic the primary's partition numbering and "fix" my problem... But, Am I right about the GRUB console commands I was issuing? How can I make them permanent then? I KNOW I did 'quit' from the grub console the first time, when from inside bash, when the system was running. What am I missing? Thank you in advance [1] http://lists.us.dell.com/pipermail/linux-poweredge/2003-July/008898.html -- Eduardo Grosclaude Universidad Nacional del Comahue Neuquen, Argentina

2 1

vncserver on IPv6
by Robert Moskowitz 14 Aug '08

14 Aug '08

http://www.realvnc.com/products/enterprise/4.1/ipv6.html IPv6 support in VNC Server E4.1.7/P4.1.2 VNC Server E4.1.7 & P4.1.2 are fully IPv6-aware, but is shipped with IPv6 support disabled by default, for security reasons. IPv6 can be enabled by setting "InTransports=IPv6,IPv4" (the default being IPv4 only), either on the command-line when starting vncserver under Unix Ok. we have vnc-server-4.1.2-9.el5.i386.rpm, so it SHOULD support IPv6. Don't know how to add a setting to the command-line, as I rund VNCserver via the service command, but I added it to /etc/sysconfig/vncservers: InTransports="IPv6" (note I also tried without the quotes) and netstat -na|grep 5902 shows vncserver only running on IPv4 and I can only connect to it via IPv4. So what am I missing?????

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