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learning centos
by pedro henrique antunes de oliveira 17 Aug '08

17 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.

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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

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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

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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 16 Aug '08

16 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

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 15 Aug '08

15 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 15 Aug '08

15 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/

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