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= CentOS 4 & Scientific Linux (SL) 4 Specific Hints = This is meant to help those with this distribution, successfully install Linux-VServer. <span id="a.-kernel-issues"></span> == A. Kernel Issues == * '''Get and compile kernel''' The CentOS default Kernel release is highly patched already and thus are not compatible with the patches supplied by linux-vserver.org. For this reason, we are going to use a vanilla-kernel (read: an unmodified original linux kernel) from kernel.org. For this part see http://linux-vserver.org/Step-by-Step+Guide+2.6 * Compile the kernel with: <pre class="code">make menuconfig make make modules_install make install</pre> * '''Disable SELinux''' * SELinux conflicts with Linux-VServer. Disable it in /etc/selinux/config (SELINUX=disabled) * '''Reboot''' * If it boots, you did it right, otherwise, go back and check everything. <span id="b.-tool-hints"></span> == B. Tool Hints == * NB Install dietlibc first, in order for util-vserver to link against that rather than glibc: <pre class="code">yum install dietlibc</pre> * Install beecrypt if you want to be able to use vhashify: <pre class="code">yum install beecrypt-devel</pre> * Many like to configure the tools with the following options: <pre class="code">./configure --prefix=/usr --sysconfdir=/etc --with-vrootdir=/vservers make make check make install</pre> <span id="c.-adding-centos-4-support-into-the-tools"></span> == C. Adding CentOS 4 Support into the tools == if you have the x86_64 architecture, substitute lib64 for lib in the next section. --psg <pre class="code">cd /usr/lib/util-vserver/distributions cp -Rpv fc3 centos4 cd centos4 mkdir pubkeys cp /usr/share/rhn/RPM-GPG-KEY-centos4 ./pubkeys/ (Should be there from CentOS install or on CD1 if not using a CentOS host) ln -s ../redhat/initpre . ln -s ../redhat/initpost . cd pkgs rm -f 01 02 03 vi 01 (put the contents of this into it: http://linux-vserver.org/CentOS_min_install) #EDIT 03.05.2006: CentOS 4.3 compatible package list downloadable from http://pegasi.fi/CentOS_min_install-4.3 #Done with Perl and 4.3 DVD, please update the list if incorrectness occurs, Pekka.Kuronen(at)pegasi.fi #ADD 12.05.2006: Scientific Linux (SL) 4.3 compatible package list downloadable from #http://www.cnaf.infn.it/~apagano/Scientific_Linux_min_install-4.3 #Done with 4.3 DVD, please update the list if incorrectness occurs, alfredo.pagano(at)cnaf.infn.it cd ../yum vi yum.conf and replace with: [main] cachedir=@YUMCACHEDIR@ reposdir=@YUMETCDIR@/yum.repos.d debuglevel=2 logfile=@YUMLOGDIR@/log pkgpolicy=newest distroverpkg=centos-release tolerant=1 exactarch=1 retries=20 obsoletes=1 gpgcheck=1 cd ../yum.repos.d rm -f *.repo cp /etc/yum.repos.d/CentOS-Base.repo . (in centos-yumconf RPM from CD1 if not using CentOS as host) vi CentOS-Base.repo (replace $releasever with 4.0 everywhere. In Vi use: .,$s/$releasever/4/g) cp -Rpv /etc/vservers/.distributions/fc3 /etc/vservers/.distributions/centos4 mkdir /vservers chmod 000 /vservers mkdir /vservers/.pkg</pre> <span id="d.-vserver-creation"></span> == D. VServer creation == * '''Build a new minimal vserver''' First, let's create a minimal install of CentOS. We set this up earlier by putting the rpm packages to pkgs/01 EDIT 03.05.2006: With CentOS[[CentOS?action=edit|?]] 4.3 do not update yum, it will not work. If already updated, install original yum with --force <pre class="code">vserver min-centos4 build -m yum --hostname domain.com --interface domain=eth0:192.168.0.136/24 --initstyle sysv \ --context 500 --force -- -d centos4</pre> This should take some time to install depending on your Internet connection. The /etc/resolv.conf file is not created. Manually create it, putting in your DNS servers or copy it from your host: <pre class="code">cp /etc/resolv.conf /vservers/min-centos4/etc/</pre> If you would like to be able to update the rpm packages (yum, etc.) from within the vserver copy in the rpm database and associated files: <pre class="code">cp /vservers/.pkg/min-centos4/rpm/state/* /vservers/min-centos4/.rpmdb/</pre> Next remove the network script before you try and start it: <pre class="code">rm -f /vservers/min-centos4/etc/rc[06].d/K90network</pre> Fix usual /proc permisions: <pre class="code">/path/to/util-vserver-0.30.208/scripts/vprocunhide</pre> Once it is created, you can start it: <pre class="code">vserver min-centos4 start</pre> (Note that sometimes the 'minilogd' process causes the above command to fail. If this is the case, use: <pre class="code">chcontext --xid 500 ps aux</pre> to identify the process, and then: <pre class="code">vkill -c 500 (pid)</pre> to kill the process, replacing (pid) by the pid of the minilogd process.) Then you can enter it: <pre class="code">vserver min-centos4 enter</pre> Next, update it with the latest patches: <pre class="code">yum update</pre> Next, clean up the startup & shutdown scripts: <pre class="code">chkconfig gpm off chkconfig pcmcia off chkconfig smartd off chkconfig haldaemon off chkconfig nfslock off chkconfig network off chkconfig portmap off chkconfig bluetooth off chkconfig rpcidmapd off chkconfig iptables off chkconfig anacron off rm -f /etc/rc[06].d/S01* exit</pre> Setup the vserver to start and stop automatically on reboot: <pre class="code">cd /etc/init.d/ mv vservers-default vservers chkconfig --add vservers chkconfig vservers on echo "default" > /etc/vservers/min-centos4/apps/init/mark</pre> You can now test that it starts and stops with: <pre class="code">service vservers start vserver-stat service vservers stop vserver-stat</pre> </div> <div id="footer"> <div class="copyleft"> <br /> Permission is granted to copy, distribute and/or modify this document under the terms of the<br /> [http://www.fsf.org/licenses/fdl.txt GNU Free Documentation License], Version 1.2 or any later version published by the Free Software Foundation. </div> ----- <div id="toolbar-bottom"> [[CentOS_HowTo?action=edit|Edit this document]] | [[CentOS_HowTo?action=history|View document history]]<br /> </div> Document last modified Thu, 08 Jun 2006 05:32:58<br /> <div class="form"> <br /> Search: </div> </div>
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