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howto transfer all configuration between 2 remote dedicated servers?
by Joe Barjo 22 Nov '08

22 Nov '08

Hello I'm willing to change my dedicated server hosting provider, and transfer my existing server to the new one. I don't have kvm access, but both servers are centos5.2 I can boot a network image that is debian based and have access to the disk. Then I tried to rsync -a my first server to the destination host, but it was not reachable from the network (I modified /etc/fstab and /etc/sysconfig/network-scripts/ifcfg-eth0 for the destination server). I also copied /boot including grub configuration... (both are using grub) As I don't have a kvm, I don't know why it is not reachable from net. So I would like to get the list of all rpms (rpm -qa) install them to the new server, then copy all files that were added/modifed Most packages should be still in the yum cache, but I'm not sure. For the rpm -qa I think there should be some special flags to get an output that would be yum compatible? But my real question is: How can I get a list of files in the whole filesystem that were added or modified compared to all the files that come from rpms? Is there a script for doing such a thing? Thanks

6 6

Forward all traffic from public IP A to public IP B?
by Morten Sundstrøm 22 Nov '08

22 Nov '08

Need help. Im trying to forward all traffic to a public server(A) to another public server(B) except traffic to port 22. Found this on google but cant get it to work. Could someone help me please. Server A has one NIC server B has one NIC. Do i need 2 NICS in server A. #!/bin/sh iptables -F iptables -F INPUT iptables -F OUTPUT iptables -F FORWARD iptables -X iptables -F -t nat iptables -P INPUT ACCEPT iptables -P OUTPUT ACCEPT iptables -P FORWARD ACCEPT echo 1 > /proc/sys/net/ipv4/ip_forward iptables -t nat -A PREROUTING -i eth0 --protocol tcp --destination-port ! 22 -j DNAT --to-destination "IP B" iptables -t nat -A PREROUTING -i eth0 --protocol udp -j DNAT --to-destination "IP B" # END /etc/rc.d/init.d/iptables status Table: filter Chain INPUT (policy ACCEPT) num target prot opt source destination Chain FORWARD (policy ACCEPT) num target prot opt source destination Chain OUTPUT (policy ACCEPT) num target prot opt source destination Table: mangle Chain PREROUTING (policy ACCEPT) num target prot opt source destination Chain INPUT (policy ACCEPT) num target prot opt source destination Chain FORWARD (policy ACCEPT) num target prot opt source destination Chain OUTPUT (policy ACCEPT) num target prot opt source destination Chain POSTROUTING (policy ACCEPT) num target prot opt source destination Table: nat Chain PREROUTING (policy ACCEPT) num target prot opt source destination 1 DNAT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:!22 to:"IP B" 2 DNAT udp -- 0.0.0.0/0 0.0.0.0/0 to:"IP B" Chain POSTROUTING (policy ACCEPT) num target prot opt source destination Chain OUTPUT (policy ACCEPT) num target prot opt source destination /Morten.

5 8

finding a needed Aramaic font
by Michael A. Peters 22 Nov '08

22 Nov '08

Not CentOS specific, but ... I'm trying to load a web page with some ancient Aramaic text. I have some Aramaic fonts installed, but I think they are for modern Aramaic. I've tried installing several different ttf fonts, but I still get boxes with numbers in them - IE 07 17 07 3D etc. Does anyone know of a resource where I can input those hex codes (I assume they are really 0717 and 073D) and find what ttf fonts would cover those characters? I'm guessing they are from an Aramaic script font. Is there maybe an existing font in CentOS or EPEL that I might try?

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hda: no DRQ after issuing WRITE
by Matt 22 Nov '08

22 Nov '08

I upgraded my Centos 4.7 server last night. Switched from a cheaper 50$ asus motherboard to a Supermicro motherboard. I also, using dd, copied entire 500g SATA seagate drive to new 500g SATA seagate drive so as to have two copies in case something went wrong. Anyway, now I keep getting this error: Nov 21 06:08:33 server kernel: hda: status timeout: status=0xd0 { Busy } Nov 21 06:08:33 server kernel: Nov 21 06:08:33 server kernel: ide: failed opcode was: unknown Nov 21 06:08:33 server kernel: hda: no DRQ after issuing WRITE Nov 21 06:08:34 server kernel: ide0: reset: success Found one website that told me too try hdparm -i to see whats up: /dev/hda: Model=ST3500320AS, FwRev=SD15, SerialNo= Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% } RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4 BuffType=unknown, BuffSize=0kB, MaxMultSect=16, MultSect=off CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=268435455 IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120} PIO modes: pio0 pio1 pio2 pio3 pio4 DMA modes: mdma0 mdma1 mdma2 UDMA modes: udma0 udma1 udma2 AdvancedPM=no WriteCache=enabled Drive conforms to: unknown: * signifies the current active mode So from recommendation on website I did this to match MaxMultiSect: hdparm -m16 /dev/hda then tried this to turn MultSect off: hdparm -m0 /dev/hda Still getting error. The Supermicro MBD-X7SBL-LN1-O motherboard has basically all defaults set in bios. Any ideas? Thanks. Matt

4 6

SYD flood dropped on Sendmail (centos 4.x)
by Chris Heiner 21 Nov '08

21 Nov '08

My guys, My firewall seems to block an attack my Centos / Sendmail boxes on port 110. These servers require a reboot after each attack. My firewall says it's blocked? Do I need to patch something on sendmail? Or is my firewall not doing its job (Sonicwall)? This is not the first time this has happened. 11/20/2008 02:53:04.864 - SYN flood attack dropped - 75.2.205.141, 48102 - 10.80.80.210, 110 11/20/2008 03:08:04.864 - SYN flood attack dropped - 75.2.205.141, 64955, greatcooks.biz - 10.80.80.220, 110 11/20/2008 03:23:08.864 - SYN flood attack dropped - 75.2.205.141, 43068, greatcooks.biz - 10.80.80.210, 110 Any input would be much appreciated. Thanks.

7 18

Re: [CentOS] I need help with CentOS installation on a Core 2 Duo Laptop
by James B. Byrne 21 Nov '08

21 Nov '08

Reply-To: <8e47efdc0811200539w9a901ffodef8fd5b6f61a91c(a)mail.gmail.com> On Thu, Nov 20, 2008 at 2:50 AM, Sadaruwan Samaraweera <slinuxworld(a)gmail.com> wrote: > I tried this option "linux acpi=off pciommconf" as well but the > problem is when I use this I can install the OS but when try to boot > on to the OS it's hang up on the boot up progress bar screen of the > CentOS and I can't do any thing. So I checked it with the text mode > loader it was the same problem can any one help me to over come this. Probably a shot in the dark but, try linux pci=nommconf without the acpi=off. Fingers crossed... -- *** E-Mail is NOT a SECURE channel *** James B. Byrne mailto:ByrneJB@Harte-Lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3

1 0

A working example to use rsyslog as log centralized host
by carlopmart 21 Nov '08

21 Nov '08

Hi all, Somebody can helps me with rsyslog configuration to use it as a log centralized server?? I am trying several configs without luck, and all examples that I found are related to v3 and nothing about v2 that ships with CentOS or RHEL. I am trying to do something like this: $template DynFile,"/var/log/rsyslog/%HOSTNAME%/secure" if $source != 'localhost' and $syslogfacility-text == 'authpriv' then -?DynFile But this is for version 3 ... and doesn't works ... Any help?? -- CL Martinez carlopmart {at} gmail {d0t} com

1 0

any ima ge software suggestion
by adrian kok 21 Nov '08

21 Nov '08

Hi I am trying to clone harddrive eg: centos, freebsd, openbsd..... any ima ge software suggestion for different os Thank you Send instant messages to your online friends http://uk.messenger.yahoo.com

3 2

CentOS-announce Digest, Vol 45, Issue 13
by centos-announce-request＠centos.org 21 Nov '08

21 Nov '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-2008:0972 Important CentOS 4 x86_64 kernel security update (Karanbir Singh) 2. CESA-2008:0972 Important CentOS 4 i386 kernel security update (Karanbir Singh) ---------------------------------------------------------------------- Message: 1 Date: Thu, 20 Nov 2008 14:26:01 +0000 From: Karanbir Singh <kbsingh(a)centos.org> Subject: [CentOS-announce] CESA-2008:0972 Important CentOS 4 x86_64 kernel security update To: centos-announce(a)centos.org Message-ID: <20081120142601.GA4435(a)vkalu.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2008:0972 Important https://rhn.redhat.com/errata/RHSA-2008-0972.html The following updated files have been uploaded and are currently syncing to the mirrors: x86_64: kernel-2.6.9-78.0.8.EL.x86_64.rpm kernel-devel-2.6.9-78.0.8.EL.x86_64.rpm kernel-doc-2.6.9-78.0.8.EL.noarch.rpm kernel-largesmp-2.6.9-78.0.8.EL.x86_64.rpm kernel-largesmp-devel-2.6.9-78.0.8.EL.x86_64.rpm kernel-smp-2.6.9-78.0.8.EL.x86_64.rpm kernel-smp-devel-2.6.9-78.0.8.EL.x86_64.rpm kernel-xenU-2.6.9-78.0.8.EL.x86_64.rpm kernel-xenU-devel-2.6.9-78.0.8.EL.x86_64.rpm src: kernel-2.6.9-78.0.8.EL.src.rpm -- Karanbir Singh CentOS Project { http://www.centos.org/ } irc: z00dax, #centos @irc.freenode.net ------------------------------ Message: 2 Date: Thu, 20 Nov 2008 14:26:01 +0000 From: Karanbir Singh <kbsingh(a)centos.org> Subject: [CentOS-announce] CESA-2008:0972 Important CentOS 4 i386 kernel security update To: centos-announce(a)centos.org Message-ID: <20081120142601.GA4423(a)vkalu.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2008:0972 Important https://rhn.redhat.com/errata/RHSA-2008-0972.html The following updated files have been uploaded and are currently syncing to the mirrors: i386: kernel-2.6.9-78.0.8.EL.i586.rpm kernel-2.6.9-78.0.8.EL.i686.rpm kernel-devel-2.6.9-78.0.8.EL.i586.rpm kernel-devel-2.6.9-78.0.8.EL.i686.rpm kernel-doc-2.6.9-78.0.8.EL.noarch.rpm kernel-hugemem-2.6.9-78.0.8.EL.i686.rpm kernel-hugemem-devel-2.6.9-78.0.8.EL.i686.rpm kernel-smp-2.6.9-78.0.8.EL.i586.rpm kernel-smp-2.6.9-78.0.8.EL.i686.rpm kernel-smp-devel-2.6.9-78.0.8.EL.i586.rpm kernel-smp-devel-2.6.9-78.0.8.EL.i686.rpm kernel-xenU-2.6.9-78.0.8.EL.i686.rpm kernel-xenU-devel-2.6.9-78.0.8.EL.i686.rpm src: kernel-2.6.9-78.0.8.EL.src.rpm -- Karanbir Singh CentOS Project { http://www.centos.org/ } irc: z00dax, #centos @irc.freenode.net ------------------------------ _______________________________________________ CentOS-announce mailing list CentOS-announce(a)centos.org http://lists.centos.org/mailman/listinfo/centos-announce End of CentOS-announce Digest, Vol 45, Issue 13 ***********************************************

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Force close on unattended SSH/SFTP connections
by Yanagisawa, Koji 21 Nov '08

21 Nov '08

Dear CentOS people, I'm sure many have faced this before but I can't seem to figure this out. I need unattended OpenSSH and its SFTP connections to be closed after a while (say, in 10 minutes). This needs to override anything that could be done from the client side (ServerAliveInterval or keepalives a program like PuTTY can send). I kind of understand it's not always easy to know when the client side is "unattended," but I'd like to know where people drew the line and what people did in the past. ClientAliveInterval only seem to help reap connections when the client side is unreachable, so this doesn't really help. TMOUT in shell achieves what I want with SSH, but this doesn't help with SFTP. Setting net.ipv4.tcp_keepalive_probes to 0 kind of does what I want (ServerAliveInterval ruins it), and I'm not sure if that's generally accepted practice. If this could be achieved in OpenSSH, that would be great, but if it needs to be some other way I'll be glad to find out... Your insight appreciated,

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