Difference between revisions of "Creating a CentOS 6 Template"

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(Created page with "DRAFT - still in the works This guide requires that you already have a CentOS 6 (Having 5 might also work) - If you do not have CentOS 6 installed, do it in KVM or VirtualBox...")
 
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DRAFT - still in the works
 
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This guide requires that you already have a CentOS 6 (Having 5 might also work) - If you do not have CentOS 6 installed, do it in KVM or VirtualBox or whatever you want.
 
This guide requires that you already have a CentOS 6 (Having 5 might also work) - If you do not have CentOS 6 installed, do it in KVM or VirtualBox or whatever you want.
  
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At a CentOS 6 host do:
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At a CentOS 6 host as root do:<br/>
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<code>
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yum install yum-utils
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yum install yum-utils<br/>
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yumdownloader centos-release.x86_64
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yumdownloader centos-release.x86_64<br/>
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mkdir -p /newroot/var/lib/<br/>
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mkdir -p /newroot/var/lib/
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touch /newroot/var/lib/random-seed #without it, the initscript installation script will fail <br/>
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touch /newroot/var/lib/random-seed #without it, the initscript installation script will fail
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rpm --rebuilddb --root=/newroot<br/>
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rpm -i --root=/newroot --nodeps centos-release-6-3.el6.centos.9.x86_64.rpm<br/>
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yum --installroot=/newroot install -y openssh-clients openssh-server yum yum-utils man wget sudo tar passwd<br/>
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yum --installroot=/newroot clean all<br/>
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ln -s /proc/mounts /newroot/etc/mtab<br/>
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rm -f /newroot/dev/null
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mknod -m 600 /newroot/dev/console c 5 1
  
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  rpm --rebuilddb --root=/newroot
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</code>
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  rpm -i --root=/newroot --nodeps centos-release-6-3.el6.centos.9.x86_64.rpm
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<br/>
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  yum --installroot=/newroot install -y openssh-clients openssh-server yum yum-utils man wget sudo tar passwd
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Create /newroot/etc/fstab that looks like this:
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  # if you want a extremely minimal installation only install yum
 
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  yum --installroot=/newroot clean all  # not sure if that is really needed
 
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  ln -s /proc/mounts /newroot/etc/mtab
 
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/newroot/etc/fstab should look like this:
 
 
   none /dev/pts devpts rw,gid=5,mode=620 0 0
 
   none /dev/pts devpts rw,gid=5,mode=620 0 0
 
   none /dev/shm tmpfs defaults 0 0
 
   none /dev/shm tmpfs defaults 0 0
  
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  rm -f /newroot/dev/null
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Edit /newroot/etc/sysconfig/init
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   mknod -m 600 /newroot/dev/console c 5 1
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Change the line
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   ACTIVE_CONSOLES=/dev/tty[1-6]
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#if you want (not sure about this. If they are there, mingettys will run. On the other hand, if you upgrade your CentOS VPS in OpenVZ they would probably be recreated)
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to
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  ACTIVE_CONSOLES=
  
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 rm /newroot/etc/init/start-ttys.conf /newroot/etc/init/tty.conf
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<code>tar zcf /vz/template/cache/centos-6-x86_64.tar.gz -C /newroot .</code>
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  tar zcf /vz/template/cache/centos-6-x86_64.tar.gz .
 

Revision as of 20:15, 23 October 2012

This guide requires that you already have a CentOS 6 (Having 5 might also work) - If you do not have CentOS 6 installed, do it in KVM or VirtualBox or whatever you want.

At a CentOS 6 host as root do:
yum install yum-utils
yumdownloader centos-release.x86_64
mkdir -p /newroot/var/lib/
touch /newroot/var/lib/random-seed #without it, the initscript installation script will fail
rpm --rebuilddb --root=/newroot
rpm -i --root=/newroot --nodeps centos-release-6-3.el6.centos.9.x86_64.rpm
yum --installroot=/newroot install -y openssh-clients openssh-server yum yum-utils man wget sudo tar passwd
yum --installroot=/newroot clean all
ln -s /proc/mounts /newroot/etc/mtab
rm -f /newroot/dev/null mknod -m 600 /newroot/dev/console c 5 1


Create /newroot/etc/fstab that looks like this: 

 none /dev/pts devpts rw,gid=5,mode=620 0 0
 none /dev/shm tmpfs defaults 0 0

Edit /newroot/etc/sysconfig/init Change the line 

 ACTIVE_CONSOLES=/dev/tty[1-6]

to 

 ACTIVE_CONSOLES=

tar zcf /vz/template/cache/centos-6-x86_64.tar.gz -C /newroot .

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