Difference between revisions of "Creating a CentOS 5.0 Template"

From OpenVZ Virtuozzo Containers Wiki
Jump to: navigation, search
Line 1: Line 1:
−
<div style="font-size: 14pt"><strong>Creating a CentOS 5.0 Template for OpenVZ</strong></div>
+
<div class=Section1>
−
<ol>
+
 
−
  <li>Install a system with the default CentOS installation that you wish to package. This could be a minimal distro or the default distro or even something custom.</li>
+
<p class=MsoNormal><b style='mso-bidi-font-weight:normal'><u><span
−
  <li>Once the OS has been installed, you need to tar the contents of the OS.
+
style='font-size:14.0pt;font-family:Tahoma'>Creating a <span class=SpellE>CentOS</span>
−
      <ol style="list-style-type: lower-alpha">
+
5.0 Template for <span class=SpellE>OpenVZ</span><o:p></o:p></span></u></b></p>
−
        <li>First, create a file called /tmp/exclude and add the following lines to it:<br />
+
 
−
            <code>.bash_history<br />lost+found<br />/dev/*<br />/mnt/*<br />/tmp/*<br />
+
<p class=MsoNormal><span style='font-size:10.0pt;font-family:Tahoma'><o:p>&nbsp;</o:p></span></p>
−
            /proc/*<br />/sys/*<br />/usr/src/*<br /></code></li>
+
 
−
        <li>Now, tar the OS file up by typing <code>tar –czvf /tmp/centos-5.0-&lt;ARCH&gt;-&lt;DISTRO&gt;-image.tar.gz / –X /tmp/exclude</code> where <strong>&lt;ARCH&gt;</strong> represents the system architecture (such as <strong>i386</strong> or <strong>x86_64</strong>) and <strong>&lt;DISTRO&gt;</strong> represents the distribution (<strong>default</strong>, <strong>minimal</strong>, etc.).</li>
+
<ol style='margin-top:0in' start=1 type=1>
−
        <li>Now transfer the file over to the OpenVZ server into the <strong>/vz/template/cache</strong> folder.</li>
+
<li class=MsoNormal style='mso-list:l0 level1 lfo1;tab-stops:list .5in'><span
−
      </ol></li>
+
    style='font-size:10.0pt;font-family:Tahoma'>Install a system (virtual or
−
  <li>On the OpenVZ server create a “dummy” VPS by creating a folder called <strong>/vz/private/50</strong> and copying the <strong>/etc/vz/conf/ve-vps.basic.conf-sample</strong> to <strong>/etc/vz/conf/50.conf</strong>.
+
    physical) with the default <span class=SpellE>CentOS</span> installation
 +
    that you wish to package.<span style='mso-spacerun:yes'>  </span>This
 +
    could be a minimal <span class=SpellE>distro</span> or the default <span
 +
    class=SpellE>distro</span> or even something custom.<o:p></o:p></span></li>
 +
<li class=MsoNormal style='mso-list:l0 level1 lfo1;tab-stops:list .5in'><span
 +
    style='font-size:10.0pt;font-family:Tahoma'>Once the OS has been
 +
    installed, you need to <b style='mso-bidi-font-weight:normal'>tar</b> the
 +
    contents of the OS.<o:p></o:p></span></li>
 +
<ol style='margin-top:0in' start=1 type=a>
 +
  <li class=MsoNormal style='mso-list:l0 level2 lfo1;tab-stops:list 1.0in'><span
 +
      style='font-size:10.0pt;font-family:Tahoma'>First, create a file called <b
 +
      style='mso-bidi-font-weight:normal'>/<span class=SpellE>tmp</span>/exclude
 +
      </b>and add the following lines to it:<o:p></o:p></span></li>
 +
</ol>
 +
</ol>
 +
 
 +
<p class=MsoNormal style='margin-left:.75in;text-indent:-.25in'><span
 +
style='font-size:10.0pt;font-family:"Courier New"'><o:p>&nbsp;</o:p></span></p>
 +
 
 +
<p class=MsoNormal style='margin-left:1.25in;text-indent:-.25in'><span
 +
style='font-size:10.0pt;font-family:"Courier New"'>.<span class=SpellE>bash_history</span><o:p></o:p></span></p>
 +
 
 +
<p class=MsoNormal style='margin-left:1.25in;text-indent:-.25in'><span
 +
class=SpellE><span style='font-size:10.0pt;font-family:"Courier New"'>lost+found</span></span><span
 +
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
 +
 
 +
<p class=MsoNormal style='margin-left:1.25in;text-indent:-.25in'><span
 +
style='font-size:10.0pt;font-family:"Courier New"'>/dev/*<o:p></o:p></span></p>
 +
 
 +
<p class=MsoNormal style='margin-left:1.25in;text-indent:-.25in'><span
 +
style='font-size:10.0pt;font-family:"Courier New"'>/<span class=SpellE>mnt</span>/*<o:p></o:p></span></p>
 +
 
 +
<p class=MsoNormal style='margin-left:1.25in;text-indent:-.25in'><span
 +
style='font-size:10.0pt;font-family:"Courier New"'>/<span class=SpellE>tmp</span>/*<o:p></o:p></span></p>
 +
 
 +
<p class=MsoNormal style='margin-left:1.25in;text-indent:-.25in'><span
 +
style='font-size:10.0pt;font-family:"Courier New"'>/proc/*<o:p></o:p></span></p>
 +
 
 +
<p class=MsoNormal style='margin-left:1.25in;text-indent:-.25in'><span
 +
style='font-size:10.0pt;font-family:"Courier New"'>/sys/*<o:p></o:p></span></p>
 +
 
 +
<p class=MsoNormal style='margin-left:1.25in;text-indent:-.25in'><span
 +
style='font-size:10.0pt;font-family:"Courier New"'>/<span class=SpellE>usr/src</span>/*<o:p></o:p></span></p>
 +
 
 +
<p class=MsoNormal style='margin-left:.75in;text-indent:-.25in'><span
 +
style='font-size:10.0pt;font-family:Tahoma'><o:p>&nbsp;</o:p></span></p>
 +
 
 +
<ol style='margin-top:0in' start=2 type=1>
 +
<ol style='margin-top:0in' start=2 type=a>
 +
  <li class=MsoNormal style='mso-list:l0 level2 lfo1;tab-stops:list 1.0in'><span
 +
      style='font-size:10.0pt;font-family:Tahoma'>Now, <b style='mso-bidi-font-weight:
 +
      normal'>tar </b>the OS file up by typing:<o:p></o:p></span></li>
 +
</ol>
 +
</ol>
 +
 
 +
<p class=MsoNormal style='margin-left:.75in;text-indent:-.25in'><span
 +
style='font-size:10.0pt;font-family:"Courier New"'><o:p>&nbsp;</o:p></span></p>
 +
 
 +
<p class=MsoNormal style='margin-left:1.0in'><span style='font-size:10.0pt;
 +
font-family:"Courier New"'>tar –<span class=SpellE>czvf</span>
 +
/tmp/centos-5.0-&lt;ARCH&gt;-&lt;DISTRO&gt;-<span class=SpellE>image.tar.gz</span>
 +
/ –X<span style='mso-spacerun:yes'>  </span>/<span class=SpellE>tmp</span>/exclude<o:p></o:p></span></p>
 +
 
 +
<p class=MsoNormal style='margin-left:.75in;text-indent:-.25in'><span
 +
style='font-size:10.0pt;font-family:"Courier New"'><span style='mso-tab-count:
 +
2'>      </span><o:p></o:p></span></p>
 +
 
 +
<p class=MsoNormal style='margin-left:1.0in'><span style='font-size:10.0pt;
 +
font-family:Tahoma'>where <b style='mso-bidi-font-weight:normal'>&lt;ARCH&gt;</b>
 +
represents the system architecture (<b style='mso-bidi-font-weight:normal'>i386</b>
 +
or <b style='mso-bidi-font-weight:normal'>x86_64</b>) and <b style='mso-bidi-font-weight:
 +
normal'>&lt;DISTRO&gt;</b> represents the distribution (<b style='mso-bidi-font-weight:
 +
normal'>default</b>, <b style='mso-bidi-font-weight:normal'>minimal</b>, etc.).<o:p></o:p></span></p>
 +
 
 +
<ol style='margin-top:0in' start=2 type=1>
 +
<ol style='margin-top:0in' start=3 type=a>
 +
  <li class=MsoNormal style='mso-list:l0 level2 lfo1;tab-stops:list 1.0in'><span
 +
      style='font-size:10.0pt;font-family:Tahoma'>Now transfer the file over to
 +
      the <span class=SpellE>OpenVZ</span> server into <b style='mso-bidi-font-weight:
 +
      normal'>/<span class=SpellE>vz</span>/template/cache </b>folder.<o:p></o:p></span></li>
 +
</ol>
 +
<li class=MsoNormal style='mso-list:l0 level1 lfo1;tab-stops:list .5in'><span
 +
    style='font-size:10.0pt;font-family:Tahoma'>On the <span class=SpellE>OpenVZ</span>
 +
    server create a “dummy” VPS by creating a folder called <b
 +
    style='mso-bidi-font-weight:normal'>/vz/private/50</b> and copying the <b
 +
    style='mso-bidi-font-weight:normal'>/<span class=SpellE>etc/vz/conf/ve-vps.basic.conf-sample</span></b>
 +
    to <b style='mso-bidi-font-weight:normal'>/etc/vz/conf/50.conf</b>.<o:p></o:p></span></li>
 +
</ol>
 +
 
 +
<p class=MsoNormal style='margin-left:.25in'><span style='font-size:10.0pt;
 +
font-family:Tahoma'><o:p>&nbsp;</o:p></span></p>
 +
 
 +
<p class=MsoNormal style='margin-left:.5in'><b style='mso-bidi-font-weight:
 +
normal'><span style='font-size:8.0pt;font-family:Tahoma;color:red'>NOTE:<o:p></o:p></span></b></p>
 +
 
 +
<p class=MsoNormal style='margin-left:.5in'><b style='mso-bidi-font-weight:
 +
normal'><span style='font-size:8.0pt;font-family:Tahoma;color:red'>50</span></b><span
 +
style='font-size:8.0pt;font-family:Tahoma;color:red'> is the VEID for the
 +
VPS.<span style='mso-spacerun:yes'>  </span>You can choose any unused VEID on
 +
the <span class=SpellE>OpenVZ</span> server.<o:p></o:p></span></p>
 +
 
 +
<p class=MsoNormal style='margin-left:.5in'><span style='font-size:8.0pt;
 +
font-family:Tahoma'><o:p>&nbsp;</o:p></span></p>
 +
 
 +
<ol style='margin-top:0in' start=4 type=1>
 +
<li class=MsoNormal style='mso-list:l0 level1 lfo1;tab-stops:list .5in'><span
 +
    style='font-size:10.0pt;font-family:Tahoma'>Now create a new folder called
 +
    <b style='mso-bidi-font-weight:normal'>/vz/template/centos/5.0/&lt;ARCH&gt;/<span
 +
    class=SpellE>config</span></b> again where <b style='mso-bidi-font-weight:
 +
    normal'>&lt;ARCH&gt;</b> represents the system architecture.<o:p></o:p></span></li>
 +
<li class=MsoNormal style='mso-list:l0 level1 lfo1;tab-stops:list .5in'><span
 +
    style='font-size:10.0pt;font-family:Tahoma'>Create a file in the folder
 +
    called <b style='mso-bidi-font-weight:normal'>rpm</b> and add the
 +
    following line:<o:p></o:p></span></li>
 +
</ol>
 +
 
 +
<p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;
 +
font-family:"Courier New"'><o:p>&nbsp;</o:p></span></p>
 +
 
 +
<p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;
 +
font-family:"Courier New"'>43<o:p></o:p></span></p>
 +
 
 +
<p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;
 +
font-family:"Courier New"'><o:p>&nbsp;</o:p></span></p>
 +
 
 +
<ol style='margin-top:0in' start=6 type=1>
 +
<li class=MsoNormal style='mso-list:l0 level1 lfo1;tab-stops:list .5in'><span
 +
    style='font-size:10.0pt;font-family:Tahoma'>Create a file called <span
 +
    class=SpellE><b style='mso-bidi-font-weight:normal'>yum.conf</b></span> in
 +
    the folder and add the following lines:<o:p></o:p></span></li>
 
</ol>
 
</ol>
  
−
NOTE:
+
<p class=MsoNormal style='margin-left:.25in'><span style='font-size:10.0pt;
−
50 is the VEID for the VPS. You can choose any unused VEID on the OpenVZ server.
+
font-family:Tahoma'><o:p>&nbsp;</o:p></span></p>
  
−
4. Now create a new folder called /vz/template/centos/5.0/<ARCH>/config again where <ARCH> represents the system architecture.
+
<p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;
−
5. Create a file in the folder called rpm and add the following line:
+
font-family:"Courier New"'>[main]<o:p></o:p></span></p>
  
−
43
+
<p class=MsoNormal style='margin-left:.5in'><span class=SpellE><span
 +
style='font-size:10.0pt;font-family:"Courier New"'>cachedir</span></span><span
 +
style='font-size:10.0pt;font-family:"Courier New"'>=/vz/template/centos/5.0/&lt;ARCH&gt;/yum-cache/<o:p></o:p></span></p>
  
−
6. Create a file called yum.conf in the folder and add the following lines:
+
<p class=MsoNormal style='margin-left:.5in'><span class=SpellE><span
 +
style='font-size:10.0pt;font-family:"Courier New"'>reposdir</span></span><span
 +
style='font-size:10.0pt;font-family:"Courier New"'>=/dev/null<o:p></o:p></span></p>
  
−
[main]
+
<p class=MsoNormal style='margin-left:.5in'><span class=SpellE><span
−
cachedir=/vz/template/centos/5.0/<ARCH>/yum-cache/
+
style='font-size:10.0pt;font-family:"Courier New"'>installonlypkgs</span></span><span
−
reposdir=/dev/null
+
style='font-size:10.0pt;font-family:"Courier New"'>=''<o:p></o:p></span></p>
−
installonlypkgs=''
 
  
−
[centos5-base]
+
<p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;
−
name=CentOS 5 - <ARCH> - Base
+
font-family:"Courier New"'><o:p>&nbsp;</o:p></span></p>
−
baseurl=http://mirror.centos.org/centos/5/os/<ARCH>/
+
 
−
enabled=1
+
<p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;
−
gpgcheck=1
+
font-family:"Courier New"'>[centos5-base]<o:p></o:p></span></p>
 +
 
 +
<p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;
 +
font-family:"Courier New"'>name=<span class=SpellE>CentOS</span> 5 - &lt;ARCH&gt;
 +
- Base<o:p></o:p></span></p>
 +
 
 +
<p class=MsoNormal style='margin-left:.5in'><span class=SpellE><span
 +
style='font-size:10.0pt;font-family:"Courier New"'>baseurl</span></span><span
 +
style='font-size:10.0pt;font-family:"Courier New"'>=http://mirror.centos.org/centos/5/os/&lt;ARCH&gt;/<o:p></o:p></span></p>
 +
 
 +
<p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;
 +
font-family:"Courier New"'>enabled=1<o:p></o:p></span></p>
 +
 
 +
<p class=MsoNormal style='margin-left:.5in'><span class=SpellE><span
 +
style='font-size:10.0pt;font-family:"Courier New"'>gpgcheck</span></span><span
 +
style='font-size:10.0pt;font-family:"Courier New"'>=1<o:p></o:p></span></p>
 +
 
 +
<p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;
 +
font-family:"Courier New"'><o:p>&nbsp;</o:p></span></p>
 +
 
 +
<p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;
 +
font-family:"Courier New"'>[centos5-updates-released]<o:p></o:p></span></p>
 +
 
 +
<p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;
 +
font-family:"Courier New"'>name=<span class=SpellE>CentOS</span> 5 - &lt;ARCH&gt;
 +
- Released Updates<o:p></o:p></span></p>
 +
 
 +
<p class=MsoNormal style='margin-left:.5in'><span class=SpellE><span
 +
style='font-size:10.0pt;font-family:"Courier New"'>baseurl</span></span><span
 +
style='font-size:10.0pt;font-family:"Courier New"'>=http://mirror.centos.org/centos/5/updates/&lt;ARCH&gt;/<o:p></o:p></span></p>
 +
 
 +
<p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;
 +
font-family:"Courier New"'>enabled=1<o:p></o:p></span></p>
 +
 
 +
<p class=MsoNormal style='margin-left:.5in'><span class=SpellE><span
 +
style='font-size:10.0pt;font-family:"Courier New"'>gpgcheck</span></span><span
 +
style='font-size:10.0pt;font-family:"Courier New"'>=1<o:p></o:p></span></p>
 +
 
 +
<ol style='margin-top:0in' start=7 type=1>
 +
<li class=MsoNormal style='mso-list:l0 level1 lfo1;tab-stops:list .5in'><span
 +
    style='font-size:10.0pt;font-family:Tahoma'>Copy <b style='mso-bidi-font-weight:
 +
    normal'>/etc/vz/dists/centos-4.conf</b> to <b style='mso-bidi-font-weight:
 +
    normal'>/etc/vz/dists/centos-5.0.conf</b>.<o:p></o:p></span></li>
 +
<li class=MsoNormal style='mso-list:l0 level1 lfo1;tab-stops:list .5in'><span
 +
    style='font-size:10.0pt;font-family:Tahoma'>Change to the <b
 +
    style='mso-bidi-font-weight:normal'>/vz/private/50</b> folder and then run
 +
    the command </span><span class=SpellE><span style='font-size:10.0pt;
 +
    font-family:"Courier New"'>gunzip</span></span><span style='font-size:
 +
    10.0pt;font-family:"Courier New"'> –dc
 +
    /vz/template/cache/centos-5.0-&lt;ARCH&gt;-&lt;DISTRO&gt;-<span
 +
    class=SpellE>image.tar.gz</span> | tar –<span class=SpellE>xvf</span> –<b
 +
    style='mso-bidi-font-weight:normal'> </b></span><span style='font-size:
 +
    10.0pt;font-family:Tahoma'>to unpack the base image to the folder.<o:p></o:p></span></li>
 +
<li class=MsoNormal style='mso-list:l0 level1 lfo1;tab-stops:list .5in'><span
 +
    style='font-size:10.0pt;font-family:Tahoma'>Make sure you are in the <b
 +
    style='mso-bidi-font-weight:normal'>/vz/private/50</b> folder.<o:p></o:p></span></li>
 +
<li class=MsoNormal style='mso-list:l0 level1 lfo1;tab-stops:list .5in'><span
 +
    style='font-size:10.0pt;font-family:Tahoma'>Edit <b style='mso-bidi-font-weight:
 +
    normal'>etc/shadow</b> and remove the replace the <b style='mso-bidi-font-weight:
 +
    normal'>root</b> password with <b style='mso-bidi-font-weight:normal'>!!</b>
 +
    instead of the hashed value.<o:p></o:p></span></li>
 +
<li class=MsoNormal style='mso-list:l0 level1 lfo1;tab-stops:list .5in'><span
 +
    style='font-size:10.0pt;font-family:Tahoma'>Edit the <b style='mso-bidi-font-weight:
 +
    normal'>etc/<span class=SpellE>inittab</span></b> file and comment out the
 +
    lines that <span class=SpellE>respawn</span> <b style='mso-bidi-font-weight:
 +
    normal'>/<span class=SpellE>sbin/mingetty</span></b> on <b
 +
    style='mso-bidi-font-weight:normal'>tty1</b> through <b style='mso-bidi-font-weight:
 +
    normal'>tty6</b>.<span style='mso-spacerun:yes'>  </span>Just put a <b
 +
    style='mso-bidi-font-weight:normal'>#</b> at the beginning of the line.<o:p></o:p></span></li>
 +
<li class=MsoNormal style='mso-list:l0 level1 lfo1;tab-stops:list .5in'><span
 +
    style='font-size:10.0pt;font-family:Tahoma'>Remove the <b
 +
    style='mso-bidi-font-weight:normal'>etc/<span class=SpellE>mtab</span></b>
 +
    file and then create a symbolic link by typing </span><span class=SpellE><span
 +
    style='font-size:10.0pt;font-family:"Courier New"'>ln</span></span><span
 +
    style='font-size:10.0pt;font-family:"Courier New"'> –s /proc/mounts etc/<span
 +
    class=SpellE>mtab</span></span><span style='font-size:10.0pt;font-family:
 +
    Tahoma'>.<o:p></o:p></span></li>
 +
<li class=MsoNormal style='mso-list:l0 level1 lfo1;tab-stops:list .5in'><span
 +
    style='font-size:10.0pt;font-family:Tahoma'>Remove all of the lines from <b
 +
    style='mso-bidi-font-weight:normal'>etc/<span class=SpellE>fstab</span></b>
 +
    except for the line that mounts <b style='mso-bidi-font-weight:normal'>/dev/pts</b>.<o:p></o:p></span></li>
 +
<li class=MsoNormal style='mso-list:l0 level1 lfo1;tab-stops:list .5in'><span
 +
    style='font-size:10.0pt;font-family:Tahoma'>Edit <b style='mso-bidi-font-weight:
 +
    normal'>etc/<span class=SpellE>rc.d/rc.sysinit</span></b> and comment out
 +
    the line that starts <b style='mso-bidi-font-weight:normal'>/<span
 +
    class=SpellE>sbin/start_udev</span></b> by placing a <b style='mso-bidi-font-weight:
 +
    normal'>#</b> at the beginning of the line.<o:p></o:p></span></li>
 +
<li class=MsoNormal style='mso-list:l0 level1 lfo1;tab-stops:list .5in'><span
 +
    style='font-size:10.0pt;font-family:Tahoma'>Now create device nodes by
 +
    typing:<o:p></o:p></span></li>
 +
</ol>
 +
 
 +
<p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;
 +
font-family:"Courier New"'><o:p>&nbsp;</o:p></span></p>
 +
 
 +
<p class=MsoNormal style='margin-left:.5in'><span class=SpellE><span
 +
style='font-size:10.0pt;font-family:"Courier New"'>mknod</span></span><span
 +
style='font-size:10.0pt;font-family:"Courier New"'> dev/<span class=SpellE>ptmx</span>
 +
c 5 2<o:p></o:p></span></p>
 +
 
 +
<p class=MsoNormal style='margin-left:.5in'><span class=SpellE><span
 +
style='font-size:10.0pt;font-family:"Courier New"'>mkdir</span></span><span
 +
style='font-size:10.0pt;font-family:"Courier New"'> dev/pts<o:p></o:p></span></p>
 +
 
 +
<p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;
 +
font-family:"Courier New"'>/<span class=SpellE>sbin</span>/MAKEDEV –d
 +
/vz/private/50/dev <span class=SpellE>ttyp</span> <span class=SpellE>ptyp</span><o:p></o:p></span></p>
 +
 
 +
<p class=MsoNormal style='margin-left:.5in'><span class=SpellE><span
 +
style='font-size:10.0pt;font-family:"Courier New"'>mknod</span></span><span
 +
style='font-size:10.0pt;font-family:"Courier New"'> dev/null c 1 3<o:p></o:p></span></p>
 +
 
 +
<p class=MsoNormal style='margin-left:.5in'><span class=SpellE><span
 +
style='font-size:10.0pt;font-family:"Courier New"'>mknod</span></span><span
 +
style='font-size:10.0pt;font-family:"Courier New"'> dev/<span class=SpellE>urandom</span>
 +
c 1 9<o:p></o:p></span></p>
 +
 
 +
<p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;
 +
font-family:"Courier New"'><o:p>&nbsp;</o:p></span></p>
 +
 
 +
<ol style='margin-top:0in' start=16 type=1>
 +
<li class=MsoNormal style='mso-list:l0 level1 lfo1;tab-stops:list .5in'><span
 +
    style='font-size:10.0pt;font-family:Tahoma'>Create the <span class=SpellE><b
 +
    style='mso-bidi-font-weight:normal'>var</b></span><b style='mso-bidi-font-weight:
 +
    normal'>/lock/rpm</b> folder.<o:p></o:p></span></li>
 +
<li class=MsoNormal style='mso-list:l0 level1 lfo1;tab-stops:list .5in'><span
 +
    style='font-size:10.0pt;font-family:Tahoma'>If you wish to disable IPv6,
 +
    do the following:<o:p></o:p></span></li>
 +
<ol style='margin-top:0in' start=1 type=a>
 +
  <li class=MsoNormal style='mso-list:l0 level2 lfo1;tab-stops:list 1.0in'><span
 +
      style='font-size:10.0pt;font-family:Tahoma'>Edit <b style='mso-bidi-font-weight:
 +
      normal'>etc/<span class=SpellE>sysconfig</span>/network</b> and set <b
 +
      style='mso-bidi-font-weight:normal'>NETWORKING_IPV6</b> to <b
 +
      style='mso-bidi-font-weight:normal'>no</b>.<o:p></o:p></span></li>
 +
  <li class=MsoNormal style='mso-list:l0 level2 lfo1;tab-stops:list 1.0in'><span
 +
      style='font-size:10.0pt;font-family:Tahoma'>Add the following lines to <b
 +
      style='mso-bidi-font-weight:normal'>etc/<span class=SpellE>modprobe.d</span>/blacklist</b>:<o:p></o:p></span></li>
 +
</ol>
 +
</ol>
 +
 
 +
<p class=MsoNormal style='margin-left:1.0in'><span style='font-size:10.0pt;
 +
font-family:"Courier New"'><o:p>&nbsp;</o:p></span></p>
 +
 
 +
<p class=MsoNormal style='margin-left:1.0in'><span style='font-size:10.0pt;
 +
font-family:"Courier New"'>blacklist ipv6<o:p></o:p></span></p>
 +
 
 +
<p class=MsoNormal style='margin-left:1.0in'><span style='font-size:10.0pt;
 +
font-family:"Courier New"'>blacklist net-pf-10<o:p></o:p></span></p>
 +
 
 +
<p class=MsoNormal style='margin-left:1.0in'><span style='font-size:10.0pt;
 +
font-family:"Courier New"'><o:p>&nbsp;</o:p></span></p>
 +
 
 +
<ol style='margin-top:0in' start=18 type=1>
 +
<li class=MsoNormal style='mso-list:l0 level1 lfo1;tab-stops:list .5in'><span
 +
    style='font-size:10.0pt;font-family:Tahoma'>Disable any physical <span
 +
    class=SpellE>NICs</span> by modifying the <span class=SpellE><b
 +
    style='mso-bidi-font-weight:normal'>etc/sysconfig/network-scripts/ifcfg-ethX</b></span>
 +
    files (where <b style='mso-bidi-font-weight:normal'>X</b> is the interface
 +
    number starting from <b style='mso-bidi-font-weight:normal'>0</b>) and
 +
    setting <b style='mso-bidi-font-weight:normal'>ONBOOT</b> to <b
 +
    style='mso-bidi-font-weight:normal'>no</b>.<o:p></o:p></span></li>
 +
<li class=MsoNormal style='mso-list:l0 level1 lfo1;tab-stops:list .5in'><span
 +
    style='font-size:10.0pt;font-family:Tahoma'>Now you’re ready to start the
 +
    template.<span style='mso-spacerun:yes'>  </span>Type </span><span
 +
    class=SpellE><span style='font-size:10.0pt;font-family:"Courier New"'>vzctl</span></span><span
 +
    style='font-size:10.0pt;font-family:"Courier New"'> start 50</span><span
 +
    style='font-size:10.0pt;font-family:Tahoma'> and wait for it to start.<o:p></o:p></span></li>
 +
<li class=MsoNormal style='mso-list:l0 level1 lfo1;tab-stops:list .5in'><span
 +
    style='font-size:10.0pt;font-family:Tahoma'>You can install additional
 +
    packages into the VPS by typing</span><span style='font-size:10.0pt;
 +
    font-family:"Courier New"'> <span class=SpellE>vzyum</span> 50 install
 +
    &lt;package&gt;</span><span style='font-size:10.0pt;font-family:Tahoma'>
 +
    at the prompt where <b style='mso-bidi-font-weight:normal'>&lt;package&gt;</b>
 +
    represents the name of the software package you wish to install.<o:p></o:p></span></li>
 +
<li class=MsoNormal style='mso-list:l0 level1 lfo1;tab-stops:list .5in'><span
 +
    style='font-size:10.0pt;font-family:Tahoma'>Finally, you should turn off
 +
    unnecessary services.<o:p></o:p></span></li>
 +
<ol style='margin-top:0in' start=1 type=a>
 +
  <li class=MsoNormal style='mso-list:l0 level2 lfo1;tab-stops:list 1.0in'><span
 +
      style='font-size:10.0pt;font-family:Tahoma'>Enter the VPS by typing </span><span
 +
      class=SpellE><span style='font-size:10.0pt;font-family:"Courier New"'>vzctl</span></span><span
 +
      style='font-size:10.0pt;font-family:"Courier New"'> enter 50</span><span
 +
      style='font-size:10.0pt;font-family:Tahoma'>.<o:p></o:p></span></li>
 +
  <li class=MsoNormal style='mso-list:l0 level2 lfo1;tab-stops:list 1.0in'><span
 +
      style='font-size:10.0pt;font-family:Tahoma'>View the services that are
 +
      set to run at startup by typing </span><span class=SpellE><span
 +
      style='font-size:10.0pt;font-family:"Courier New"'>chkconfig</span></span><span
 +
      style='font-size:10.0pt;font-family:"Courier New"'> --list | <span
 +
      class=SpellE>grep</span> 5:on</span><span style='font-size:10.0pt;
 +
      font-family:Tahoma'>.<o:p></o:p></span></li>
 +
  <li class=MsoNormal style='mso-list:l0 level2 lfo1;tab-stops:list 1.0in'><span
 +
      style='font-size:10.0pt;font-family:Tahoma'>Disable any unwanted service
 +
      by typing </span><span class=SpellE><span style='font-size:10.0pt;
 +
      font-family:"Courier New"'>chkconfig</span></span><span style='font-size:
 +
      10.0pt;font-family:"Courier New"'> --levels 2345 &lt;service&gt; off</span><span
 +
      style='font-size:10.0pt;font-family:Tahoma'> where <b style='mso-bidi-font-weight:
 +
      normal'>&lt;service&gt;</b> represents the service to disable.<o:p></o:p></span></li>
 +
</ol>
 +
</ol>
 +
 
 +
<p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;
 +
font-family:Tahoma'>Services that you can (and should) turn off without harm
 +
are <span class=SpellE><b style='mso-bidi-font-weight:normal'>acpid</b></span>,
 +
<span class=SpellE><b style='mso-bidi-font-weight:normal'>apmd</b></span>, <b
 +
style='mso-bidi-font-weight:normal'>kudzu</b>, and <span class=SpellE><b
 +
style='mso-bidi-font-weight:normal'>microcode_ctl</b></span>.<o:p></o:p></span></p>
 +
 
 +
<ol style='margin-top:0in' start=22 type=1>
 +
<li class=MsoNormal style='mso-list:l0 level1 lfo1;tab-stops:list .5in'><span
 +
    style='font-size:10.0pt;font-family:Tahoma'>Exit the VPS by typing </span><span
 +
    style='font-size:10.0pt;font-family:"Courier New"'>exit</span><span
 +
    style='font-size:10.0pt;font-family:Tahoma'> at the prompt.<o:p></o:p></span></li>
 +
<li class=MsoNormal style='mso-list:l0 level1 lfo1;tab-stops:list .5in'><span
 +
    style='font-size:10.0pt;font-family:Tahoma'>Stop the VPS by typing <span
 +
    class=SpellE>vzctl</span> stop 50.<o:p></o:p></span></li>
 +
<li class=MsoNormal style='mso-list:l0 level1 lfo1;tab-stops:list .5in'><span
 +
    style='font-size:10.0pt;font-family:Tahoma'>Finally, package up the new
 +
    template by typing </span><span style='font-size:10.0pt;font-family:"Courier New"'>tar
 +
    –<span class=SpellE>czvf</span>
 +
    /vz/template/cache/centos-5.0-&lt;ARCH&gt;-&lt;DISTRO&gt;.<span
 +
    class=SpellE>tar.gz</span> .</span><span style='font-size:10.0pt;
 +
    font-family:Tahoma'><o:p></o:p></span></li>
 +
<li class=MsoNormal style='mso-list:l0 level1 lfo1;tab-stops:list .5in'><span
 +
    style='font-size:10.0pt;font-family:Tahoma'>The template is ready for use.<o:p></o:p></span></li>
 +
</ol>
  
−
[centos5-updates-released]
+
<p class=MsoNormal><span style='font-size:10.0pt;font-family:Tahoma'><o:p>&nbsp;</o:p></span></p>
−
name=CentOS 5 - <ARCH> - Released Updates
 
−
baseurl=http://mirror.centos.org/centos/5/updates/<ARCH>/
 
−
enabled=1
 
−
gpgcheck=1
 
−
7. Copy /etc/vz/dists/centos-4.conf to /etc/vz/dists/centos-5.0.conf.
 
−
8. Change to the /vz/private/50 folder and then run the command gunzip –dc /vz/template/cache/centos-5.0-<ARCH>-<DISTRO>-image.tar.gz | tar –xvf – to unpack the base image to the folder.
 
−
9. Make sure you are in the /vz/private/50 folder.
 
−
10. Edit etc/shadow and remove the replace the root password with !! instead of the hashed value.
 
−
11. Edit the etc/inittab file and comment out the lines that respawn /sbin/mingetty on tty1 through tty6.  Just put a # at the beginning of the line.
 
−
12. Remove the etc/mtab file and then create a symbolic link by typing ln –s /proc/mounts etc/mtab.
 
−
13. Remove all of the lines from etc/fstab except for the line that mounts /dev/pts.
 
−
14. Edit etc/rc.d/rc.sysinit and comment out the line that starts /sbin/start_udev by placing a # at the beginning of the line.
 
−
15. Now create device nodes by typing:
 
  
−
mknod dev/ptmx c 5 2
+
<p class=MsoNormal style='margin-left:.75in;text-indent:-.25in'><span
−
mkdir dev/pts
+
style='font-size:10.0pt;font-family:Tahoma'><o:p>&nbsp;</o:p></span></p>
−
/sbin/MAKEDEV –d /vz/private/50/dev ttyp ptyp
 
−
mknod dev/null c 1 3
 
−
mknod dev/urandom c 1 9
 
  
−
16. Create the var/lock/rpm folder.
+
</div>
−
17. If you wish to disable IPv6, do the following:
 
−
a. Edit etc/sysconfig/network and set NETWORKING_IPV6 to no.
 
−
b. Add the following lines to etc/modprobe.d/blacklist:
 
  
−
blacklist ipv6
+
</body>
−
blacklist net-pf-10
 
  
−
18. Disable any physical NICs by modifying the etc/sysconfig/network-scripts/ifcfg-ethX files (where X is the interface number starting from 0) and setting ONBOOT to no.
+
</html>
−
19. Now you’re ready to start the template.  Type vzctl start 50 and wait for it to start.
 
−
20. You can install additional packages into the VPS by typing vzyum 50 install <package> at the prompt where <package> represents the name of the software package you wish to install.
 
−
21. Finally, you should turn off unnecessary services.
 
−
a. Enter the VPS by typing vzctl enter 50.
 
−
b. View the services that are set to run at startup by typing chkconfig --list | grep 5:on.
 
−
c. Disable any unwanted service by typing chkconfig --levels 2345 <service> off where <service> represents the service to disable.
 
−
Services that you can (and should) turn off without harm are acpid, apmd, kudzu, and microcode_ctl.
 
−
22. Exit the VPS by typing exit at the prompt.
 
−
23. Stop the VPS by typing vzctl stop 50.
 
−
24. Finally, package up the new template by typing tar –czvf /vz/template/cache/centos-5.0-<ARCH>-<DISTRO>.tar.gz .
 
−
25. The template is ready for use.
 

Revision as of 19:46, 2 November 2007

Creating a CentOS 5.0 Template for OpenVZ<o:p></o:p>

<o:p> </o:p>

  1. Install a system (virtual or physical) with the default CentOS installation that you wish to package.  This could be a minimal distro or the default distro or even something custom.<o:p></o:p>
  2. Once the OS has been installed, you need to tar the contents of the OS.<o:p></o:p>
    1. First, create a file called /tmp/exclude and add the following lines to it:<o:p></o:p>

<o:p> </o:p>

.bash_history<o:p></o:p>

lost+found<o:p></o:p>

/dev/*<o:p></o:p>

/mnt/*<o:p></o:p>

/tmp/*<o:p></o:p>

/proc/*<o:p></o:p>

/sys/*<o:p></o:p>

/usr/src/*<o:p></o:p>

<o:p> </o:p>

    1. Now, tar the OS file up by typing:<o:p></o:p>

<o:p> </o:p>

tar –czvf /tmp/centos-5.0-<ARCH>-<DISTRO>-image.tar.gz / –X  /tmp/exclude<o:p></o:p>

      <o:p></o:p>

where <ARCH> represents the system architecture (i386 or x86_64) and <DISTRO> represents the distribution (default, minimal, etc.).<o:p></o:p>

    1. Now transfer the file over to the OpenVZ server into /vz/template/cache folder.<o:p></o:p>
  1. On the OpenVZ server create a “dummy” VPS by creating a folder called /vz/private/50 and copying the /etc/vz/conf/ve-vps.basic.conf-sample to /etc/vz/conf/50.conf.<o:p></o:p>

<o:p> </o:p>

NOTE:<o:p></o:p>

50 is the VEID for the VPS.  You can choose any unused VEID on the OpenVZ server.<o:p></o:p>

<o:p> </o:p>

  1. Now create a new folder called /vz/template/centos/5.0/<ARCH>/config again where <ARCH> represents the system architecture.<o:p></o:p>
  2. Create a file in the folder called rpm and add the following line:<o:p></o:p>

<o:p> </o:p>

43<o:p></o:p>

<o:p> </o:p>

  1. Create a file called yum.conf in the folder and add the following lines:<o:p></o:p>

<o:p> </o:p>

[main]<o:p></o:p>

cachedir=/vz/template/centos/5.0/<ARCH>/yum-cache/<o:p></o:p>

reposdir=/dev/null<o:p></o:p>

installonlypkgs=<o:p></o:p>

<o:p> </o:p>

[centos5-base]<o:p></o:p>

name=CentOS 5 - <ARCH> - Base<o:p></o:p>

baseurl=http://mirror.centos.org/centos/5/os/<ARCH>/<o:p></o:p>

enabled=1<o:p></o:p>

gpgcheck=1<o:p></o:p>

<o:p> </o:p>

[centos5-updates-released]<o:p></o:p>

name=CentOS 5 - <ARCH> - Released Updates<o:p></o:p>

baseurl=http://mirror.centos.org/centos/5/updates/<ARCH>/<o:p></o:p>

enabled=1<o:p></o:p>

gpgcheck=1<o:p></o:p>

  1. Copy /etc/vz/dists/centos-4.conf to /etc/vz/dists/centos-5.0.conf.<o:p></o:p>
  2. Change to the /vz/private/50 folder and then run the command gunzip –dc /vz/template/cache/centos-5.0-<ARCH>-<DISTRO>-image.tar.gz | tar –xvf – to unpack the base image to the folder.<o:p></o:p>
  3. Make sure you are in the /vz/private/50 folder.<o:p></o:p>
  4. Edit etc/shadow and remove the replace the root password with !! instead of the hashed value.<o:p></o:p>
  5. Edit the etc/inittab file and comment out the lines that respawn /sbin/mingetty on tty1 through tty6.  Just put a # at the beginning of the line.<o:p></o:p>
  6. Remove the etc/mtab file and then create a symbolic link by typing ln –s /proc/mounts etc/mtab.<o:p></o:p>
  7. Remove all of the lines from etc/fstab except for the line that mounts /dev/pts.<o:p></o:p>
  8. Edit etc/rc.d/rc.sysinit and comment out the line that starts /sbin/start_udev by placing a # at the beginning of the line.<o:p></o:p>
  9. Now create device nodes by typing:<o:p></o:p>

<o:p> </o:p>

mknod dev/ptmx c 5 2<o:p></o:p>

mkdir dev/pts<o:p></o:p>

/sbin/MAKEDEV –d /vz/private/50/dev ttyp ptyp<o:p></o:p>

mknod dev/null c 1 3<o:p></o:p>

mknod dev/urandom c 1 9<o:p></o:p>

<o:p> </o:p>

  1. Create the var/lock/rpm folder.<o:p></o:p>
  2. If you wish to disable IPv6, do the following:<o:p></o:p>
    1. Edit etc/sysconfig/network and set NETWORKING_IPV6 to no.<o:p></o:p>
    2. Add the following lines to etc/modprobe.d/blacklist:<o:p></o:p>

<o:p> </o:p>

blacklist ipv6<o:p></o:p>

blacklist net-pf-10<o:p></o:p>

<o:p> </o:p>

  1. Disable any physical NICs by modifying the etc/sysconfig/network-scripts/ifcfg-ethX files (where X is the interface number starting from 0) and setting ONBOOT to no.<o:p></o:p>
  2. Now you’re ready to start the template.  Type vzctl start 50 and wait for it to start.<o:p></o:p>
  3. You can install additional packages into the VPS by typing vzyum 50 install <package> at the prompt where <package> represents the name of the software package you wish to install.<o:p></o:p>
  4. Finally, you should turn off unnecessary services.<o:p></o:p>
    1. Enter the VPS by typing vzctl enter 50.<o:p></o:p>
    2. View the services that are set to run at startup by typing chkconfig --list | grep 5:on.<o:p></o:p>
    3. Disable any unwanted service by typing chkconfig --levels 2345 <service> off where <service> represents the service to disable.<o:p></o:p>

Services that you can (and should) turn off without harm are acpid, apmd, kudzu, and microcode_ctl.<o:p></o:p>

  1. Exit the VPS by typing exit at the prompt.<o:p></o:p>
  2. Stop the VPS by typing vzctl stop 50.<o:p></o:p>
  3. Finally, package up the new template by typing tar –czvf /vz/template/cache/centos-5.0-<ARCH>-<DISTRO>.tar.gz .<o:p></o:p>
  4. The template is ready for use.<o:p></o:p>

<o:p> </o:p>

<o:p> </o:p>

</body>

</html>

Retrieved from "https://wiki.openvz.org/index.php?title=Creating_a_CentOS_5.0_Template&oldid=3558"