Discuss January 2010

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Question about running a CentOS4.8 (32-bit) guest under CentOS5.4xen (64-bit)
by Robert Heller 23 Jan '10

23 Jan '10

I am trying to run my old CentOS4.8 (32-bit) system as a guest system under CentOS5.4xen (64-bit). I followed the instructions in Appendix A of the xen user manual (/usr/share/doc/xen-3.0.3/pdf/user.pdf) and created a 'disk image' (actually a 10gig LVM logical volume: sauron.deepsoft.com% sudo fdisk -l /dev/mapper/sauron-c4guest Disk /dev/mapper/sauron-c4guest: 10.7 GB, 10737418240 bytes 16 heads, 32 sectors/track, 40960 cylinders Units = cylinders of 512 * 512 = 262144 bytes Device Boot Start End Blocks Id System /dev/mapper/sauron-c4guest1 * 1 40960 10485744 83 Linux sauron.deepsoft.com% sudo lomount -t ext3 -diskimage /dev/mapper/sauron-c4guest -partition 1 /mnt/guest sauron.deepsoft.com% ls -ltr /mnt/guest/boot total 17432 -rw-r--r-- 1 root root 51614 Jan 21 20:35 config-2.6.9-89.0.11.EL -rw-r--r-- 1 root root 1425764 Jan 21 20:35 initrd-2.6.9-89.0.16.EL.img -rw-r--r-- 1 root root 832064 Jan 21 20:35 initrd-2.6.9-89.0.15.EL.img -rw-r--r-- 1 root root 832055 Jan 21 20:35 initrd-2.6.9-89.0.11.EL.img -rw-r--r-- 1 root root 766328 Jan 21 20:35 initrd-2.6.9-78.0.22.EL.img-orig -rw-r--r-- 1 root root 51613 Jan 21 20:35 config-2.6.9-89.0.9.EL -rw-r--r-- 1 root root 55212 Jan 21 20:35 config-2.6.9-89.0.18.EL.plus.c4 -rw-r--r-- 1 root root 51614 Jan 21 20:35 config-2.6.9-89.0.16.EL -rw-r--r-- 1 root root 51614 Jan 21 20:35 config-2.6.9-89.0.15.EL -rw-r--r-- 1 root root 768504 Jan 21 20:35 System.map-2.6.9-89.0.9.EL -rw-r--r-- 1 root root 787043 Jan 21 20:35 System.map-2.6.9-89.0.18.EL.plus.c4 -rw-r--r-- 1 root root 768660 Jan 21 20:35 System.map-2.6.9-89.0.16.EL -rw-r--r-- 1 root root 768660 Jan 21 20:35 System.map-2.6.9-89.0.15.EL -rw-r--r-- 1 root root 768606 Jan 21 20:35 System.map-2.6.9-89.0.11.EL -rw-r--r-- 1 root root 67596 Jan 21 20:35 symvers-2.6.9-89.0.9.EL.gz -rw-r--r-- 1 root root 78176 Jan 21 20:35 symvers-2.6.9-89.0.18.EL.plus.c4.gz -rw-r--r-- 1 root root 67596 Jan 21 20:35 symvers-2.6.9-89.0.16.EL.gz -rw-r--r-- 1 root root 67596 Jan 21 20:35 symvers-2.6.9-89.0.15.EL.gz -rw-r--r-- 1 root root 67596 Jan 21 20:35 symvers-2.6.9-89.0.11.EL.gz -rw-r--r-- 1 root root 832001 Jan 21 20:35 initrd-2.6.9-89.0.9.EL.img -rw-r--r-- 1 root root 1533159 Jan 21 20:35 vmlinuz-2.6.9-89.0.9.EL -rw-r--r-- 1 root root 1579298 Jan 21 20:35 vmlinuz-2.6.9-89.0.18.EL.plus.c4 -rw-r--r-- 1 root root 1536244 Jan 21 20:35 vmlinuz-2.6.9-89.0.16.EL -rw-r--r-- 1 root root 1536207 Jan 21 20:35 vmlinuz-2.6.9-89.0.15.EL -rw-r--r-- 1 root root 1533468 Jan 21 20:35 vmlinuz-2.6.9-89.0.11.EL drwxr-xr-x 2 root root 4096 Jan 21 20:36 grub -rw-r--r-- 1 root root 796960 Jan 22 15:35 initrd-2.6.9-89.0.18.EL.plus.c4.img sauron.deepsoft.com% cat /mnt/guest/boot/grub/grub.conf # grub.conf generated by anaconda # # Note that you do not have to rerun grub after making changes to this file # NOTICE: You have a /boot partition. This means that # all kernel and initrd paths are relative to /boot/, eg. # root (hd0,0) # kernel /vmlinuz-version ro root=/dev/sauron/c5root # initrd /initrd-version.img #boot=/dev/sda default=1 timeout=5 #splashimage=(hd0,0)/grub/splash.xpm.gz hiddenmenu title CentOS4 (2.6.9-89.0.18.EL.plus.c4) root (hd0,0) kernel /boot/vmlinuz-2.6.9-89.0.18.EL.plus.c4 ro root=/dev/hda1 single initrd /boot/initrd-2.6.9-89.0.18.EL.plus.c4.img pygrub seems to be happy: sudo /usr/bin/pygrub /dev/mapper/sauron-c4guest [Reasonable imitation of a Grub boot screen] linux (kernel /var/lib/xen/boot_kernel.8bcf-G)(ramdisk /var/lib/xen/boot_ramdisk But when I try to start the guest, I get: error: POST operation failed: xend_post: error from xen daemon: (xend.err "Error creating domain: (2, 'Invalid kernel', 'xc_dom_find_loader: no loader found\\n')") I googled this error message and the only hits I got were about FC11 or FC12 and some issue relating to how the kernel image was compressed, which probably does not relate to an *older* CentOS 4 kernel. The config file for this guest is: sauron.deepsoft.com% sudo cat /etc/xen/c4guest name = "c4guest" uuid = "06bfb4e1-c427-c93c-2365-b80b832bb6d4" maxmem = 512 memory = 512 vcpus = 1 bootloader = "/usr/bin/pygrub" on_poweroff = "destroy" on_reboot = "restart" on_crash = "restart" vfb = [ "type=vnc,vncunused=1,keymap=en-us" ] disk = [ "phy:/dev/mapper/sauron-c4guest,xvda,w" ] vif = [ "mac=00:16:36:0a:d9:ac,bridge=virbr0,script=vif-bridge" ] What am I missing? It also appears I am limited to paravirtualization (does this matter?), because my processor does not seem to support hardware virtualization support: processor : 0 vendor_id : AuthenticAMD cpu family : 15 model : 127 model name : AMD Sempron(tm) Processor LE-1300 stepping : 2 cpu MHz : 1000.000 cache size : 512 KB fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx mmxext fxsr_opt rdtscp lm 3dnowext 3dnow up pni cx16 lahf_lm extapic cr8_legacy misalignsse bogomips : 2000.01 TLB size : 1024 4K pages clflush size : 64 cache_alignment : 64 address sizes : 40 bits physical, 48 bits virtual power management: ts fid vid ttp tm stc 100mhzsteps -- Robert Heller -- 978-544-6933 Deepwoods Software -- Download the Model Railroad System http://www.deepsoft.com/ -- Binaries for Linux and MS-Windows heller(a)deepsoft.com -- http://www.deepsoft.com/ModelRailroadSystem/

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Git: help sought
by Timothy Murphy 23 Jan '10

23 Jan '10

I have a project using Git on machine A. I'm running a Centos server on machine B. I'd like to "publish" the project on machine B (mainly for my own use, so I can access it from various sites). I've asked about this on a Git mailing list, but haven't understood the replies. In particular, a couple of people suggested gitolite, but when I examined this I couldn't make out what it did. As will be obvious I am a Git newbie, having been reared on SVN. But I thought some CentOS users might have met this problem and come to a simple solution. -- Timothy Murphy e-mail: gayleard /at/ eircom.net tel: +353-86-2336090, +353-1-2842366 s-mail: School of Mathematics, Trinity College, Dublin 2, Ireland

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voice chat on centos with gtalk users.
by Arvind P R 23 Jan '10

23 Jan '10

hi all, i have a centos 5.4 64 bit system running on the base hardware of my system and have windows machines running in virtual in vmware workstation. i need something to *voice chat* with *GTALK* users. In the windows VMs i can install gtalk for windows which does support voice chat, but the problem there is the microphone doesnt get detected inside the VMs. incase of centos installed on the base i can get the microphone but i can find a utility to voice chat. i have heard of empathy, but i cant find a yum repository for it. anyway i can get the mic detected inside the VM? or any utility for voice chat with Gtalk users in centos ?? can anyone plz help me with it? thanks, Arvind

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wifi doesnt work on centos 5.4
by Arvind P R 23 Jan '10

23 Jan '10

hi all, this is my first hit on the mailing list. hope i m posting in the right place. well, i have a dell vostro 1510 laptop with broadcom wifi adapter. n it doesnt work! :( i installed the wifi drivers with ndiswrapper. iwconfig shows the following. [root@laptop ~]# iwconfig lo no wireless extensions. eth0 no wireless extensions. sit0 no wireless extensions. wlan0 IEEE 802.11g ESSID:off/any Nickname:"laptop" Mode:Managed Frequency:2.417 GHz Access Point: Not-Associated Bit Rate=54 Mb/s Tx-Power:32 dBm RTS thr=2347 B Fragment thr=2346 B Encryption key:off Power Management:off Link Quality:0 Signal level:0 Noise level:0 Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:0 Missed beacon:0 strangely i cannot find the wlan0 config file in the /etc/sysconfig/network-scripts/!! [root@laptop ~]# iwlist wlan0 scanning wlan0 Scan completed : Cell 01 - Address: 00:xx:xx:91:xx:xx ESSID:"thephenomenon" Protocol:IEEE 802.11g Mode:Managed Frequency:2.412 GHz (Channel 1) Quality:78/100 Signal level:-46 dBm Noise level:-96 dBm Encryption key:on Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 9 Mb/s 18 Mb/s; 36 Mb/s; 54 Mb/s; 6 Mb/s; 12 Mb/s 24 Mb/s; 48 Mb/s Extra:bcn_int=100 Extra:atim=0 IE: WPA Version 1 Group Cipher : TKIP Pairwise Ciphers (2) : TKIP CCMP Authentication Suites (1) : PSK IE: IEEE 802.11i/WPA2 Version 1 Group Cipher : TKIP Pairwise Ciphers (2) : TKIP CCMP Authentication Suites (1) : PSK i generated a wpa_passphrase and wpa_supplicant.conf is as follows [root@laptop ~]# cat /etc/wpa_supplicant/wpa_supplicant.conf ctrl_interface=/var/run/wpa_supplicant ctrl_interface_group=wheel network={ ssid="thephenomenon" key_mgmt=WPA-PSK psk=88a745bb68f4ff4fae41xxxxxxxxxxxxx5b1a66341ced3cxxxxxx2167b218d8c } now when i do a [root@laptop ~]# wpa_supplicant -Dwext -iwlan0 -c/etc/wpa_supplicant.conf Failed to read or parse configuration '/etc/wpa_supplicant.conf'. [root@laptop ~]# i get the above error. i have a WPA encryption in my router. infact earlier i used to get a connected status when i tried to connect it with wpa_gui once. but later i think i have screwed the config a bit sorry for the long post... can someone plz guide me from here?

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CentOS-announce Digest, Vol 59, Issue 8
by centos-announce-request＠centos.org 22 Jan '10

22 Jan '10

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-2010:0061 Moderate CentOS 5 x86_64 gzip Update (Karanbir Singh) 2. CESA-2010:0061 Moderate CentOS 5 i386 gzip Update (Karanbir Singh) 3. Re: CESA-2010:0061 Moderate CentOS 5 x86_64 gzip Update (Karanbir Singh) ---------------------------------------------------------------------- Message: 1 Date: Fri, 22 Jan 2010 11:19:20 +0000 From: Karanbir Singh <kbsingh(a)centos.org> Subject: [CentOS-announce] CESA-2010:0061 Moderate CentOS 5 x86_64 gzip Update To: centos-announce(a)centos.org Message-ID: <20100122111920.GA27983(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2010:0061 Moderate Upstream details at : https://rhn.redhat.com/errata/RHSA-2010-0061.html The following updated files have been uploaded and are currently syncing to the mirrors: x86_64: gzip-1.3.3-18.el4_8.1.x86_64.rpm Source: gzip-1.3.3-18.el4_8.1.src.rpm -- Karanbir Singh CentOS Project { http://www.centos.org/ } irc: z00dax, #centos(a)irc.freenode.net ------------------------------ Message: 2 Date: Fri, 22 Jan 2010 11:19:20 +0000 From: Karanbir Singh <kbsingh(a)centos.org> Subject: [CentOS-announce] CESA-2010:0061 Moderate CentOS 5 i386 gzip Update To: centos-announce(a)centos.org Message-ID: <20100122111920.GA27970(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2010:0061 Moderate Upstream details at : https://rhn.redhat.com/errata/RHSA-2010-0061.html The following updated files have been uploaded and are currently syncing to the mirrors: i386: gzip-1.3.3-18.el4_8.1.i386.rpm Source: gzip-1.3.3-18.el4_8.1.src.rpm -- Karanbir Singh CentOS Project { http://www.centos.org/ } irc: z00dax, #centos(a)irc.freenode.net ------------------------------ Message: 3 Date: Fri, 22 Jan 2010 14:11:11 +0000 From: Karanbir Singh <kbsingh(a)centos.org> Subject: Re: [CentOS-announce] CESA-2010:0061 Moderate CentOS 5 x86_64 gzip Update Cc: centos-announce(a)centos.org Message-ID: <4B59B1FF.9000303(a)centos.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed The Subject line says 5, but these are clearly CentOS-4 updates. Apologies for the mix up here. CESA-2010:0061 Moderate CentOS 5 x86_64 gzip Update CESA-2010:0061 Moderate CentOS 5 i386 gzip Update should have been: CESA-2010:0061 Moderate CentOS 4 x86_64 gzip Update CESA-2010:0061 Moderate CentOS 4 i386 gzip Update - KB On 01/22/2010 11:19 AM, Karanbir Singh wrote: > > CentOS Errata and Security Advisory 2010:0061 Moderate > > Upstream details at : https://rhn.redhat.com/errata/RHSA-2010-0061.html > > The following updated files have been uploaded and are currently > syncing to the mirrors: > > x86_64: > gzip-1.3.3-18.el4_8.1.x86_64.rpm > > Source: > gzip-1.3.3-18.el4_8.1.src.rpm > > ------------------------------ _______________________________________________ CentOS-announce mailing list CentOS-announce(a)centos.org http://lists.centos.org/mailman/listinfo/centos-announce End of CentOS-announce Digest, Vol 59, Issue 8 **********************************************

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Centos security sshv1
by Alejandro Rodriguez Luna 22 Jan '10

22 Jan '10

Hi all! I was scanning my servers with nmap, ( i have installed ssh), and the result gave me this: 22/tcp open ssh sshv1: Server Supports SSHv1 ssh-keyhost: 1024 ea:7e:77:b7:a1:78:18:70:6c:46:ee:a0:dd:08:0e:74 (RSA1) 1024 ba:d0:8a:44:16:fc:7c:7a:38:24:2e:72:06:fe:99:56 (DSA) 1024 ff:43:15:78:98:3c:75:f9:12:36:58:92:46:6c:1c:99 (RSA) could this be a threat for intruders? i know that sshv1 should be avoided, but all i want to know is if with that information, a intruder could compromise my server? Encuentra las mejores recetas en Yahoo! Cocina. http://mx.mujer.yahoo.com/cocina/

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OT: free DNS service?
by Lanny Marcus 22 Jan '10

22 Jan '10

I have been using a free DNS service for the past seven (7) years. This morning, at 4 A.M., , I changed the "A" record for one of my web sites, to point to an IP address on a different server, so I could test. After watching the TTL count down from 3600 to zero, with the "dig" command, it then reset to 3600, but still resolved to the original IP address. :-) I set the "A" record back to the original IP address and filed a Support Ticket with that company, but if they cannot get this to work properly again, I need a new DNS service that is free. Recommendations? (BTW, the Domain is registered with GoDaddy, but not hosted there, so it appears I cannot use their "Total DNS" service). TIA! Lanny Magazine subscriptions Largest discount Credit/Debit Card Check PayPal http://www.lowcostmagazines.com/

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apcupsd
by m.roth＠5-cent.us 22 Jan '10

22 Jan '10

Here's an odd one: I installed apcupsd, and it works with most of our UPSs. I'd swear it worked on this one. Then I replaced the Gin-u-wine APC batteries, which were dead, with new ones, non-APC. They're just dumb batteries, no chips or whatever on them. If I hook it up using a serial cable, I can get info. If I hook it up the way I had it, with APC's weird USB cable - and this is the way it was working before - it fails. I run apctest, and it gives me: Attached to driver: usb sharenet.type = DISABLE cable.type = USB_CABLE You are using a USB cable type, so I'm entering USB test mode mode.type = USB_UPS Setting up the port ... Hello, this is the apcupsd Cable Test program. This part of apctest is for testing USB UPSes. Getting UPS capabilities...SUCCESS Then I tell it to do the self test, and get: This test instructs the UPS to perform a self-test operation and reports the result when the test completes. Clearing previous self test result...CLEARED Initiating self test...INITIATED Waiting for test to complete...ERROR READING STATUS 12.976 apcupsd: linux-usb.c:802 HIDIOCGREPORT for function SelftestStatus failed. ERR=Input/output error Now, I've even found an rpm that was *not* two+ years old, as what comes with CentOS 5.4, current update, and get the same error. In addition, even though the batteries are fully charged, and the info I get via the serial cable says they're at 100%, the red "change battery" light is still on on the front of the UPS. Hitting the "test" button doesn't help; I was hoping running the self-test that's available via the USB connection would reset it, but I can't do that. Any clues for the poor? mark

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Corporate drop box for files
by Joseph L. Casale 22 Jan '10

22 Jan '10

I need to provide a means for our people to stop using the mail server as a file server, a web site with a friendly interface has been asked for instead of an ftp server. Anyone know of something/project that exists already? Thanks! jlc

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Add /sbin to sudo PATH
by Samuel Contesse 22 Jan '10

22 Jan '10

Hello, Does anyone have an idee how to add /sbin to the sudo $PATH environment? Adding /sbin to .bashrc $PATH isn't really what I want... I'd like sudoers to be able to run: $ sudo chkconfig And not: $ sudo /sbin/chkconfig Thanks Sam

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