How Do I Setup A Ubuntu DomU Guest On A CentOS / Fedora Core XEN Server

XEN: Create Debian 4 DomU On Top Of Centos 5.2 Dom0
I'm not a Debian user, so I want some advice how to install Debian 4 as guest OS on top of Centos 5.2 dom0.

Mostly on Google, there's a manual on Centos on top of Debian. I've tried to use the netinstall iso for debian and mount it on /var/www/html/debian and use it for remote install source. So far don't have any success on that.

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Setup Ispconfig On Fedora Core 6
i try to install ispconfig panel con my vps fedora core 6

but i see this error

checking for MySQL support... yes
checking for specified location of the MySQL UNIX socket... no
checking for MySQL UNIX socket location... no
configure: error: Cannot find MySQL header files under /usr/local/lib/mysql.
Note that the MySQL client library is not bundled anymore!
ERROR: Could not configure PHP
cd: error retrieving current directory: getcwd: cannot access parent directories: No such file or directory
mv: cannot stat `binaries/aps.tar.gz': No such file or directory
mv: cannot stat `binaries/spamassassin.tar.gz': No such file or directory
mv: cannot stat `binaries/uudeview.tar.gz': No such file or directory
mv: cannot stat `binaries/clamav.tar.gz': No such file or directory
mv: cannot stat `binaries/cronolog': No such file or directory
mv: cannot stat `binaries/cronosplit': No such file or directory
mv: cannot stat `binaries/ispconfig_tcpserver': No such file or directory
mv: cannot stat `binaries/zip': No such file or directory
mv: cannot stat `binaries/unzip': No such file or directory
tar: spamassassin.tar.gz: Cannot open: No such file or directory
tar: Error is not recoverable: exiting now
tar: Child returned status 2
tar: Error exit delayed from previous errors
mv: cannot stat `spamassassin': No such file or directory
tar: uudeview.tar.gz: Cannot open: No such file or directory
tar: Error is not recoverable: exiting now
tar: Child returned status 2
tar: Error exit delayed from previous errors
mv: cannot stat `uudeview': No such file or directory
tar: clamav.tar.gz: Cannot open: No such file or directory
tar: Error is not recoverable: exiting now
tar: Child returned status 2
tar: Error exit delayed from previous errors
mv: cannot stat `clamav': No such file or directory
tar: aps.tar.gz: Cannot open: No such file or directory
tar: Error is not recoverable: exiting now
tar: Child returned status 2
tar: Error exit delayed from previous errors
./setup2: line 860: ispconfig_tmp/php/bin/php: No such file or directory
ERROR: The PHP binary coming with ISPConfig does not work properly on your system! The installation routine stops here!
[root@vps198 install_ispconfig]#

how i fix this problem and install the ispconfig?

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Difference Between Fedora Core & CentOS
Whats the Difference between Fedora Core & CentOS?

I think my host installed the wrong OS, but just wondering to see if it's worth changing the OS if they're both the same.

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Which Operating System Fedora Core, CentOS, FreeBSD
I currently run a dedicated with redhat 9 and am looking at a new server with either Fedora Core, CentOS, or FreeBSD.

I'd like your opinions on the best o/s to go with overall and also bearing in mind I'm coming from redhat and will be running cpanel on it...

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CentOS, Debian, Fedora Core 3 & 4, Gentoo, Opensuse, Suse, Unbuntu?
Gazzin.com offers so many OSs on their VPS deals - CentOS, Debian, Fedora Core 3, Fedora Core 4, Gentoo, Opensuse, Suse, Unbuntu. Which one would you advise me to start from?

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Xen: DomU Crashing Frequently
I've been running 3 Xen servers for the last few months in a production environment, and facing a strange problem with one of them.

Server 1 and 2 run a couple of DomU's and are running just fine.

Server 3 runs one DomU and takes care of all the backups for the DomU's of Server 1 and 2
The DomU on Server 3 is crashing every night, right when the backups are being made.
DomU becomes inaccessible, but keeps appearing at xm list with state ------

When I try to connect to the console it wont let me connect. The only way to get the DomU back up is by using xm destroy and xm create again.

For the back-up I use NFS where the DomU on Server 3 is the host, and the other DomU's of Server 1 and 2 connect to it through an internal bridge.

Below you'll find some information about Server 3:

Hardware:
HP ProLiant DL380 G5
10Gb Memory
( 8 x 146G SAS10k in RAID 5 )

Dom0:
CentOS 5 kernel 2.6.18-92.1.10.el5xen
Booting params: dom0_mem=1024M

DomU:
CentOS 5 kernel 2.6.18-92.1.10.el5
Booting params: acpi=off clock=pit

The last qemu-dm log on Dom0:
char device redirected to /dev/pts/1
qemu_map_cache_init nr_buckets = 4000
shared page at pfn bffff
buffered io page at pfn bfffd
xs_read(/vm/a8af3ec4-19d4-774e-af65-0902374dc616/rtc/timeoffset): read error
I/O request not ready: 0, ptr: 0, port: 0, data: 0, count: 0, size: 0
Triggered log-dirty buffer switch
I/O request not ready: 0, ptr: 0, port: 0, data: 0, count: 0, size: 0
I/O request not ready: 0, ptr: 0, port: 0, data: 0, count: 0, size: 0
xs_write(/vm/a8af3ec4-19d4-774e-af65-0902374dc616/rtc/timeoffset, rtc/timeoffset): write error

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Kernel Upgrade On Fedora Core 4 Server
I have a server running Fedora 4 and WHM/cPanel. I would like to upgrade the linux kernel to the latest version, so mosey in via SSH and type "yum -y upgrade". It downloads a few things and tells me everything is hunky dory.

Now, the version it says it is currently running is: 2.6.17-1.2142_FC4 #1 Tue Jul 11 22:41:14 EDT 2006

Is that the really the newest version available? Maybe I'm confused as to how this works, but if I go to kernel.org it tells me the most recent stable version of the kernel is 2.6.24.3. Is this because I am running FC4?

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32 Bit Xen Guest On X86_64 EL5 Node
Let's make this straight,

I have this vps,which is pending cancellation in a few days.
Hardware Node = EL 5 x86_64,
Vz = Xen

I asked my provider for 32 bit centos, I even rebuilt it, but my "uname --all" still

Quote:

Linux xxx.xxx.com 2.6.18-128.1.10.el5xen #1 SMP Thu May 7 11:07:18 EDT 2009 x86_64 x86_64 x86_64 GNU/Linux

so I opened a ticket asking about the vps arch.
The provider have told me that to run a vps 32 bit guest, what you have to do is (?)

+++++++++++++++++++++++++
yum clean all
echo i686-redhat-linux > /etc/rpm/platform
+++++++++++++++++++++++++

so yum will exclude any x86_64 packages.
The provider has told me also that my "uname" display x86_64 because the hardware node is 64 bit. Is this true ?

I'm no linux or vps guru, but that's doesnt feel right at all.
This has cause me some issues especially with kernel-headers and some program failed to compile.

So, is it possible to run a 32 bit OS as xen guest inside 64 bit node?

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Xen Update, On Bringing Guest Networks Back Up
After a yum update on a centos 5.2 box (including an update to the latest version of xen) my guests don't have a network connection anymore (nor windows, nor linux VMs).
The windows VM does see an unknown PCI device (great, no drivers and no internet), of which I guess is the network card seeing there are no other network cards listed in the VM.

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Ubuntu Server Edition Compared To CentOS
I asked this question before in the past and I still have to ask it: has anyone used both Ubuntu Server Edition and CentOS? I would like to compare both operating system, in terms of speed, performance, security, and stability.

I have decided to build my new server and use Ubuntu Server Edition 64-bit operating system after using CentOS 64-bit operating system for a bit over a year now.

The reason why I have chosen to use Ubuntu Server Edition is because of the operating system's fabulous reputation among desktop PC users, and its large and helpful support community.

Support is what I need most, and Ubuntu seems to have it. I also am not the best with Linux yet, so it will definitely be needed. Ubuntu also seems to update its software faster than other operating systems.

I hope my decision to switch from CentOS 64-bit to Ubuntu Server Edition 64-bit will not be in vain.

Can anyone compare these two 64-bit operating systems and possibly link me to some reviews, comparisons, and/or benchmark results?

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KVM Hypervisor And Guest OS Setup
I have been using Linux for the past 3 or so years, either running it for workstations or servers, and now I want to set up a server for Virtualization. I have been doing a fair bit of research about the different ways of doing this, and I have decided to go with KVM. I usually use CentOS, but will have to use Debian to use KVM. I just have a few questions about the best way of setting it up.

We have a pretty powerful server* which we are planning on collocating to a data centre and running web servers from the VMs. Virtualization seems like the best way to allow for simpler administration, and also allow us get the most out of our server's resources.
*Intel Xeon X3230 Quad Core, 8GB Ram, 4x 15k 147gb SAS (RAID 6)

What is the best way to set this up then? I was thinking we could install Debian as the Host/Hypervisor over the whole drive, and give it a 16GB swap partition. Then I guess when the VMs are installed they live on the Debian drive as a file, or do they need their own partitions?

Are the guest OS's capable of using the Host's swap space? Its bad enough losing 16GB as a swap partition to the host OS, but please don't tell me I need to supply the VMs with their own swap partition aswell - im curious as to if the server will ever need to use swap space as it has alot of ram, let alone require extra swap for each VM too?

KVM is still very new, but does anyone know any good books/resources out there? The virtualization books I have seen don't seem to cover KVM, just Xen and others.

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Upgrading To Fedora Core 11
I have a linux server that has active clients on it, its running Fedora Core 4 and I beleive its time to upgrade to the latest Fedora Release.

The server is running cPanel, has anyone here done an upgrade to a box running Fedora before? Any tips or tricks?

I'm hoping its a simple attend data center, reboot server with new Fedora DVD, boot off DVD select upgrade and away we go. . .

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PHP 5.1 To 5.2 On Fedora Core 5
I have a Fedora Core 5 VPS currently running PHP 5.1.6, and wish to upgrade to 5.2 so I can run Magento eCommerce software.

I've managed to install yum, and after running yum update php, it just updates to 5.1.x still

My understanding of it currently is I need to point it to new repositories with 5.2 in?

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Fedora Core 6 Compatibility
I have bought a
PowerEdge 2900 Quad-Core Xeon E5345 2.33 Ghz Processor
2GB FB 667MHz Memory
146 GB SAS hard drive
PERC 5/i integrated RAID Controller Card

I have installed Fedora Core 6 on this.But somehow it fails to work.It keeps hanging anytime anywhere.

Can anybody help me know whether this is compatible with each other?

I tried closing some services and work it,but the attempt was in vane.

I have googled alot over this and cant get it worked.

I also tried to install from different CDs,but no luck.

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VMWare - WinXP As Guest On CENTOS - Networking
OKay here is the set up:

I have a CENTOS 64bit running, with 1 guest OS (WinXP) in a VMWare Server. I have tried the following: I have 6 public IP's attached to my 1 Ethernet card in the CENTOS host.

Try 1:

The Guest OS is set to use "Bridged" Networking. This allows full use of the internet, in both directions. Not exactly optimal, but it does work. I can reach the Guest via RD, which is a requirement for this client. The guest OS is mainly assigned one of the 6 public IP's (x.x.x.118). The problem with this setup is the Guest OS can not reach the host. For example the host has a mail server on it, and when the Guest tries to reach the host, it times out.

Try 2:

The Guest OS is set up to use "NAT" and gets 192.168.100.128 as its IP via DHCP inside of VMWare. The nat config file for VMWare is set to open port 3389 (RD port). Guest OS can reach the host with out any problem, and can reach the internet with out any problem, however I can not RD in to the Guest OS.

I prefer setup number 2 for all the obvious reasons, but I just can not get my IPTables rules to work. This is what I thought should work, but does not:

iptables -t nat -I PREROUTING -d x.x.x.118 -j DNAT --to-destination=192.168.100.128
iptables -t nat -I POSTROUTING -s 192.168.100.128 -j SNAT --to-source=x.x.x.118
I realize that would have done all traffic, and defeated the benefits of NAT,but since forwarding only 3389 was not working I tried forwarding everything.

Any suggestions?

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How To Install FFMPEG On Fedora Core 4
i want to install FFMPEG on my server , i tried to install from here http://vexxhost.com/blog/category/ffmpeg/

but i got error in step no. 6 , put in your consideration i didn't do the step no. 5
coz my OS is Fedora core 4.

plz any one have the right way to install , tell me.

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DNS Is Down On Fedora Core 5 & Rndc
I have a problem with one of the servers since the morning, DNS is down and trying to start it giving failed message.

I'm using Fedora 5
CPanel 10.9.0-S119
named (9.3.3rc2) with installed Packages: bind-9.3.3-0.2.rc2.fc5 / bind-devel-9.3.3-0.2.rc2.fc5 / bind-libbind-devel-9.3.3-0.2.rc2.fc5 / bind-libs-9.3.3-0.2.rc2.fc5 / bind-utils-9.3.3-0.2.rc2.fc5 / binutils-2.16.91.0.6-5
kernel-2.6.18-1.2257.fc5

Error Message:

Quote:

root@server [~]# service named start
Starting named:
Error in named configuration:
zone alexaian-d.com/IN: loaded serial 2006040201
zone al-jan.org/IN: loaded serial 2006073101

named.conf file

Quote:

root@server [~]# cat /etc/named.conf
include "/etc/rndc.key";

controls {
inet 127.0.0.1 allow { localhost; } keys { "rndckey"; };
};

options {
};

zone "alexaian-d.com" {
type master;
file "/var/named/ahmed-d.com.db";
};

zone "al-jan.org" {
type master;
file "/var/named/al-jinan.org.db";
};

rndc: connect failed: 127.0.0.1#953: connection refused

Quote:

root@server [~]# service named status, I'm getting the error:
rndc: connect failed: 127.0.0.1#953: connection refused

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Fedora (Core 6) And Creating Partions For CPanel
I am doing a FRESH install of Fedora Core 6 onto a brand new server. I have 2 questions about partitions on there..

1. Should all the partitions (/home, /backup, /var etc..) be of file system type "ext3?" I could not find any documentation on this anywhere.

2. A question about about LVM (Logical Volume Management). Are you supposed to create a different LVM for each partition? Or just for /tmp?

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Installation Zend Optimizer & Ioncube On Fedora Core 4 Using Plesk 8.2
i got plesk 8.2 installed on my fedora core 4 server. I would like to install ioncube & zend optimizer.

Anyone can explain me stepwise how to do..

i read many post on the forum about it but i have not succeded in..

here is the infos of my server system info:

CPU:GenuineIntel, Intel(R) Xeon(TM) CPU 2.80GHz
Version: psa v8.2.0_build82070706.15 os_FedoraCore 4
OS: Linux 2.6.9-023stab033.9-enterprise
Key number: PLSK.00000000.000

component info:
awstats6.6-0.060916beta.swsoft bind9.3.1-20.FC4 coldfusionComponent was not installed coldfusion-supportComponent was not installed courier-imap3.0.8-fc4.build82070706.15 drweb4.33-rh5_psa drweb-qmail4.33-fc4.build82070706.15 frontpage5.0.2.2635-1.fc4.swsoft httpd2.0.54-10.4.1.swsoft mailman2.1.8-0.FC4.1 mod_perl2.0.1-1.fc4 mod_python3.1.4-2 mysql4.1.20-1.FC4.1 perl-Apache-ASP2.59-fc4.build82070706.15 php5.0.4-10.5.1.swsoft postgresql-serverComponent was not installed psa8.2.0-fc4.build82070706.15 psa-api-rpc8.2.0-fc4.build82070706.15 psa-autoinstaller3.2.0-build32070705.20 psa-backup-manager8.2.0-fc4.build82070706.15 psa-horde3.1.4-fc4.build82070706.15 psa-imp4.1.4-fc4.build82070706.15 psa-logrotate3.7-fc4.build82070706.15 psa-manual-custom-skin-guide8.2.0-fc4.build82070706.15 psa-migration-manager8.2.0-fc4.build82070706.15 psa-mivaComponent was not installed psa-mod-fcgid-configurator1.0-13 psa-proftpd1.3.0-fc4.build82070706.15 psa-qmail1.03-fc4.build82070706.15 psa-qmail-rblsmtpd0.70-fc4.build82070706.15 psa-rubyrails-configuratorComponent was not installed psa-spamassassin8.2.0-fc4.build82070706.15 psa-tomcat-configurator8.2.0-fc4.build82070706.15 psa-turba2.1.4-fc4.build82070706.15 rubyComponent was not installed samba3.0.23a-1.fc4.1 spamassassin3.0.6-1.fc4 SSHTerm0.2.2-fc4.build82070706.15 tomcat5.0.30-5jpp_6fc webalizer2.01_10-28

info when doing uname -a:

Linux xxx.xxxxx.xx 2.6.9-023stab033.9-enterprise #1 SMP Tue Dec 5 14:40:57 MSK 2006 i686 i686 i386 GNU/Linux

info when doing php -v:

PHP 5.0.4 (cli) (built: Nov 9 2005 09:19:53)
Copyright (c) 1997-2004 The PHP Group
Zend Engine v2.0.4-dev, Copyright (c) 1998-2004 Zend Technologies

Info when doing httpd -v:
Server version: Apache/2.0.54
Server built: Jul 31 2006 15:02:04

I struggled many times to be able to set up the ioncube & zend optimizer but in vain..

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Possible To Run 32-bit Guest On 64-bit Xen Host
if its actually possible to properly run a 32bit guest under a 64 bit xen host.

I'm using hypervm.

64 bit guests work perfectly, no problems.

32bit guests boot, but when i try for example, yum update, it will try and install 64 bit packages and fail.

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Fedora 9 Vs Centos 5
Fedora 9 vs Centos 5? which is good for running a server? Is both more or less the same?

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Mail Server Setup On Fedore Core 6 Server
for setup and configuration instructions for setting up mail server on a Fedora Core 6 server. I googled it and most of the links are described with steps while installing OS, but i need to configure a mail server on a server where my site is already running.

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Fedora, FreeBSD, Or CentOS
I am about to sign up for a dedicated server, and I have three options to choose from... actally, 6 options:

FEDORA C7 BASIC
FEDORA C7 PLESK 8.3

FREEBSD 6.3 BASIC
FREEBSD 6.3 PLESK 8.3

CENTOS 5.1 BASIC
CENTOS 5.1 PLESK 8.3

Which one should you pick and (most importantly) why?

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Might I Change From Fedora To CentOS In My New Servers
My hosting service doesn't provide Fedora servers anymore, and they offer only CentOS servers.

I'm now a real Fedora expert , and I don't know if I must change to CentOS in the new servers I acquire.

- Does it take too much time to learn CentOS?
- Is CentOS very similar to Fedora?
- Is CentOS more stable than Fedora?

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Suse, Debian, Fedora Or CentOS
I will be dropping my shared-hosting plan and ordering a small VPS as soon as I can decide on which operating sytem to use. It seems that most companies offer the following choices: Suse, Debian, Fedora and CentOS.

I freely admit that I am a full-fledged n00b when it comes to linux and will be learning as I go, the problem is I just don't know where to start because I'm not familiar with any of them. I have at least heard of Suse, Debian and Fedora before, but didn't even know this CentOS existed until yesterday... and yet, it seems to be one of the more popular choices.

So I was wondering if some of you seasoned VPS veterans here could recommend an OS, tell me what the differences are, or otherwise share any experience you might have with any of them.

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Ubuntu Or CentOS? (Or Some Other Distro?)
I've always used CentOS for my servers. But now there's this Ubuntu thing taking off!

Is Ubuntu taking off on the server side as well or is Rhat still king?

Is there a site where I can get % numbers for which distros are most popular (on servers, not desktop)?

(This is as a customer/admin not a hosting provider).

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CentOS, Debian, Ubuntu Which Is Better For Vps?
Which OS is better in security and easy to use for vps beginner:
CentOS™, Debian™, Ubuntu™, Fedora™, or Gentoo™.?

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Webhosting OS Centos Or Ubuntu (Debian)
I am currently using Ubuntu (debian) server 7.10 for web hosting but see a lot of discussions about Linux centos.

Which linux OS do you prefer for hosting and why....

Just figured I would throw that out there.

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Hassle Free CentOS/Ubuntu LAMP Install Disc?
I would imagine there's a source for this but google's not yielding much. I'm looking for a CD/DVD ISO that will essentially auto install and configure a linux box with at least SSH access so I can manually install the rest.

I know bluequartz does this, put the CD and the install auto configures pretty much everything. Where would one find one click install discs for either CentOS or debian/ubuntu?

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How To Setup Virtual Private Server (VPS) On CentOS?
How can I setup VPS's on my new server?, I want something which is free, can anyone give me some software? for centos

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Xen And CentOS Install
I have installed Xen on my CentOS ded box, and now I'm trying to install a Guest OS, also CentOS using the following command:

Code:
virt-install -p --prompt -n CentOS2 -r 512 --file=/vm/centos.img --file-size=15 -l [url]

Now everything starts, I come to the network screen (right after the language selection), leave everything on default, it says it is trying to configure the network with DHCP for eth0 and then hangs there for a moment a does nothing.

How do I continue, how do I configure the network correcly.

I am just starting to learn Xen and would appreciate all the input I get.

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CENTOS 5.3 With Core 2 Quad
i have a CENOTS 5.3 server / i686 with a Q8200 core 2 quad processor,

for some reason when I run

cat /proc/cpuinfo each cose doesn;t report that its running full speed..

processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 23
model name : Intel(R) Core(TM)2 Quad CPU Q8200 @ 2.33GHz
stepping : 7
cpu MHz : 1998.000
cache size : 2048 KB
physical id : 0
siblings : 4
core id : 0
cpu cores : 4
apicid : 0
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc pni monitor ds_cpl est tm2 cx16 xtpr lahf_lm
bogomips : 4668.98

it shows all 4 cores but look at the MHZ, is there something i can do about this to fix this?

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Installing Xen On CentOS With SATA
I've got a 'virgin' machine from Nocster running CentOS 5, including a SATA drive (shows up as "SCSI").

It looks like it'll be a straight-forward install [url], but I wondered if anyone has had this exact combination before and if there are any problems I should expect? Given that it's a dedicated machine I don't have physical access to, I'm slightly paranoid about screwing up.

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Make Centos Image For Xen
I have been trying to get it to work, but cant get it going...

how do I make centos run on xen?

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There Are Alot Of Core.xxxx In My Centos
i have a forum on centos with php and mysql,

im not sure why there are many files like core.2323 or core.2742... in the folder of my forum,

i do not download or upload any files to there,

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CentOS 4.4 And Intel Dual Core 2
I'm trying to install CentOS 4.4 in dual core 2 box without success, can't even finish installation. Read about a bug closed because it doesn't happen in CentOS 5, thus leaving me no option but to use unstable cPanel 11. Does anyone have any clue about this? Seems strange that there's no workaround.

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How Do I Host Windows 2008 Server As A Guest OS On My Linux Dedi
How do I run a virtual instance of Windows server 2008 on my Linux dedi? Do I need to partition the server and create a VPS for this or can I run it on something like VMware? (Please look at my other thread here [url]t=857377 to learn more about my server, its resources and current config.)

Why would I want to do this? Because my primary desktop OS is still Vista Ultimate 64 and I've invested a lot in Windows-based software and hardware--too much to make a total switch to Linux. But, I don't want to invest more than I have to in order to run a Windows server that allows my business partner to access documents remotely or for us to share various files securely and privately and still serve my mostly Windows-based clients and colleagues. I'm one of, well, two people I know who even use Linux (at least at the OS level and know it).

Since my research shows I **can** do this on Centos 5, the responses that would be most useful to me would be those that focus on how I can do this successfully (even if it seems complicate; I can figure it out with help and/or direction) and what to consider or avoid when creating this virtual guest OS on my Linux dedi.

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Ubuntu VPN Tunnel Between 2 Ubuntu Servers
way to create a VPN tunnel between two ubuntu servers?

Both will be in seperate datacentres but I'd like a secure tunnel so I can setup jobs to backup to one another.

This has to be done on the server level and cannot be done at the router/firewall as I do not have access to this kit.

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Howto Load Tun/tap On Centos XEN VPS
Anyone have any info on how to do this? It appears my hosts don't know how to do it..

"You have the tun module which can be loaded via a modprobe but the dev entries would appear to be needed to be made. Of course, you could do this if you know how or wait while I research it. We know tun/tap works on openvz but you're the first request we've had on Xen."

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Howto Load Tun/tap On Centos XEN VPS
"You have the tun module which can be loaded via a modprobe but the dev entries would appear to be needed to be made. Of course, you could do this if you know how or wait while I research it. We know tun/tap works on openvz but you're the first request we've had on Xen."

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Which CentOS Distribution I386 Or X86_64 For Intel Core 2 Duo 32bit Desktop
Which CentOS distribution i386 or x86_64 do I need for intel core 2 duo 32bit desktop.

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How To Setup Ip Address On Centos
my ISP offers me vlan environment for my two servers, but I need to setup internal IPs myself on my centos. Now I have no idea on how to do it. Anybody may help me on this problem?

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Software Raid1 Setup On Centos 5
How can setup software raid1 on centos 5?

Can you provide any refrence?

I see [url]but i dont know is this need to /boot partition or no? and if need to this, is it must set for raid1 too?

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Fedora 5 Server
i have problem in my linux server that i have aserver with 5.2.4 apache and many scripts not working after that i upgraded to php 4.4.7 so all scipts all over my server are working but not loging with any user and pass just as u make refresh to the page
this problem in all forums and scripts in my server i need quickly solution please
my customers are confused

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Ubuntu Server Or Debian
I've just ordered a dedicated server with Ubuntu server, but they've come back to me to say that they've had trouble installing Ubuntu server on these particular servers.

As an alternative, they're offering to install Debian. My concern is that I come from a windows background and have spent the last month reading and playing with Ubuntu Server in vmware. I'll be running a small handful of sites on the server and will rely on the apt-get and package installer in webmin to get things set up and for administration. I'll dabble in the shell a little, but only when needed.

Should I go with a different host that can offer Ubuntu, or will I be okay with Debian?

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Remote Ubuntu Server
I installed ubuntu server on my server

my os is windows xp

how may i remote to ubuntu by windows?

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Making Mailer On Ubuntu Server
I have a Ubuntu 6 LTS server, and so far i have installed and got working:
Apache, PHP5, SQL5

but now i come to EXIM, its installed, and i have installed Solid Pop3d as a pop server - it was in the repository, but now i dont know what to do.

The server exists as a subdomain of another, until its ready for me to move onto. There are no control panels, i wanted to do it all with SSH.

Does anyone know how to set it up so i can connect with a mail client, and how to setup accounts?

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HOWTO OpenVPN Setup Guide For FC3, FC4, FC5, CentOS And Others,connecting Via Windows
I have had great difficulty in setting up OpenVPN, so I thought, when I finally do get it to work, I will write a HOWTO, so other can hopefully benefit…

This guide was done using a FC4 VPS, running on Xen, it will work on OpenVZ, all you need to do is ask your VPS provider to install “tun support”.

1.First of all get a few additional repos, If you already have your repos setup, skip this step

If you have Fedora 3, follow these steps,

[url]

If you have Fedora 4, follow these steps,

[url]

If you have Fedora 5, follow these steps,

[url]

If you have CentOS, follow the “additional third party CentOS repos”

[url]

Then issue these commands, each line is a new command, anything beginning with "#" are comments so dont try to execute those.

Code:
yum update

yum install openssl openssl-devel
# openssl and openssl-devel may be installed already… so don’t worry

2. Right, now you want to install OpenVPN, here are the commands,

Code:
yum install openvpn -y

#Now check that it works

service openvpn start
service openvpn stop

3. A few things to setup before you can make certificates, issue these commands,

Code:

find / -name "easy-rsa"

#you should get an output like this…

/usr/share/doc/openvpn-2.0.7/easy-rsa

#Now, make a copy of the easy-rsa directory, to /etc/openvpn/ ( make sure you #have put the right version number in i.e. mine was -2.0.7, change if needed)

cp -R /usr/share/doc/openvpn-2.0.7/easy-rsa /etc/openvpn/

cd /etc/openvpn/easy-rsa

chmod 777 *

mkdir /etc/openvpn/keys

4. You need to edit the vars file, located in /etc/openvpn/easy-rsa
You can use any editor you like, I used vi.

Change the line

Code:
export KEY_DIR=$D/keys
to

Code:
export KEY_DIR=/etc/openvpn/keys
Also at the bottom of this file you will see something similar to this,

Code:
export KEY_COUNTRY=US
export KEY_PROVINCE=CA
export KEY_CITY=SOMEWHERE
export KEY_ORG="My Org"
export KEY_EMAIL=me@mydomain.com
Change this to your own values.

5. Now its time to make the certificates, enter these commands

Code:
. ./vars

Code:
./clean-all

Code:
./build-ca
# just hit enter to the defaults apart from Common Name, this must be unique
# call it something like mydomain-ca

Code:
./build-key-server server

Code:
./build-key client1
# remember that common name must be unique e.g. use mydomain-client1
# and YES you want to sign the keys

Code:
./build-key client2
# do this step for as many clients as you need.

Code:
./build-dh

6. We are almost done now… right we need to create a few config files, you can download my template from here,

Code:
cd /etc/openvpn

Code:
wget www.designpc.co.uk/downloads/server.conf
# make sure you change a few things in the server.conf file, like DNS
# servers

Code:
touch server-tcp.log
~ this makes the log file..

Code:
touch ipp.txt
this makes the IP reservation list.

7. You need to make a few changes to OpenVPN itself. Go to..

Code:
cd /etc/init.d/
edit the openvpn file

#Uncomment this line (line 119)

Code:
echo 1 > /proc/sys/net/ipv4/ip_forward
Add these lines below it, changing 123.123.123.123 to your public IP address,

Code:
iptables -t nat -A POSTROUTING -s 192.168.2.3 -j SNAT --to 123.123.123.123
iptables -t nat -A POSTROUTING -s 192.168.2.4 -j SNAT --to 123.123.123.123
iptables -t nat -A POSTROUTING -s 192.168.2.5 -j SNAT --to 123.123.123.123
iptables -t nat -A POSTROUTING -s 192.168.2.6 -j SNAT --to 123.123.123.123
iptables -t nat -A POSTROUTING -s 192.168.2.7 -j SNAT --to 123.123.123.123
iptables -t nat -A POSTROUTING -s 192.168.2.8 -j SNAT --to 123.123.123.123
iptables -t nat -A POSTROUTING -s 192.168.2.9 -j SNAT --to 123.123.123.123
iptables -t nat -A POSTROUTING -s 192.168.2.10 -j SNAT --to 123.123.123.123
Now install iptables if you don’t have it already,

Code:
yum install iptables

#test it

service iptables start
service iptables stop

8. Now for the client config files. If your client is a Windows machine, make sure you have installed OpenVPN, use the gui version, downloadable from here;

[url]

You need to copy a few files from the server to your client machine, here is the list, located in /etc/openvpn/keys/

## WARNING ## Use a secure way of transferring these files off the server, something like WinSCP.

ca.crt
client1.csr
client1.key
client1.crt

Put these files in this directory C:Program FilesOpenVPNconfig

Now you need to make a client config, here is an example..

PHP Code:

clientdev tunproto tcp#Change my.publicdomain.com to your public domain or IP addressremote my.publicdomain.com 1194resolv-retry infinitenobindpersist-keypersist-tunca ca.crtcert client1.crtkey client1.keyns-cert-type server#DNS Options here, CHANGE THESE !!push "dhcp-option DNS 123.123.123.123"push "dhcp-option DNS 123.123.123.124"comp-lzoverb 3 

Make sure you edit any of the lines with comments above them.

Call this file client1.opvn and put it in C:Program FilesOpenVPNconfig

Make sure the file extension is .opvn not .txt

To connect right click on OpenVPN in the taskbar >> Connect

To test ping 192.168.2.1

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Windows Server 2003 X86 Or Ubuntu 9.04 X64
The past week I've been trying to answer the hardest question. I'm an expert windows user and a Novice Linux user.

I have a server built and ready for an operating system, this will be a development server for database and web development. It will also likely turn into an encrypted file server as well.

I do not plan on doing much else other then that.

Is it worth it to struggle through and learn the Linux command line or should I go for Windows Server something I am more familiar with?

I've considered VMware although I have "Fake Raid" and ESXi does not see my Raid-1 setup.

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Xeon 3220 Quad Core 2.4 Or 3070 Dual Core 2.66 For DB
Shall I chose the xeon quad core 2.4 GHZ or the dual core 2.66 GHZ for an adserver's database?

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Quad Core Xeon Or 2X AMD Opteron Dual Core
Which is the better performer?

(1x) Quad Core Intel Xeon X3220 2.40GHz 2x4M Cache

OR

(2x) Dual Core AMD Opteron 2216 2.4GHz 2X1MB Cache 1Ghz HyperTransport

This is for a web/application server running, Windows 2003 Server Professional, IIS, MySQL, MSSQL 2005 Express, Plesk 8.5. The price is about the same.

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Which Virtualization Guest Operating System
For all of you who are ordering / have ordered VPS systems, what do you think about having Windows vs Linux available from your provider?

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64bit Guest Os On 32bit Host
I was surprised when hypervm brought in a 64bit guest os. Maybe it's me..but...is this a good idea? Maybe it works fine.. it just does not *seem* like it would.

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