Centos Upgrade 4.x to 5.x - Revision history

Hm2k: improved tar based backup/restore

2011-06-02T22:25:37Z

improved tar based backup/restore

2011-06-02T20:41:06Z

no need to enter the container

2011-06-02T20:25:11Z

‎Backup dev: full path

2011-06-02T16:53:42Z

added testing step

2011-06-02T16:39:09Z

‎Update conf file: fixed typo

2011-06-02T16:31:16Z

‎Install initscripts package (forced and with no deps): improved

2011-06-02T16:30:36Z

‎Install centos-5-release packages: fixed url

2011-06-02T13:59:41Z

‎Create a container using centos-4-i386-minimal and set a valid nameserver: improved

2011-06-02T13:49:04Z

‎Replace the new /dev/ with the old one: mv instead of rm

2011-06-02T13:17:19Z

‎Upgrade container packages: use $CTID var

@@ Line 28: / Line 28: @@
 <pre>
-tar -cf dev.tar /vz/private/$CTID/dev
+tar -cf $CTID.dev.tar -C /vz/private/$CTID dev
 </pre>
@@ Line 137: / Line 137: @@
 </pre>
-==Replace the new /dev/ with the old one==
+==Restore dev==
 <pre>
-cd /vz/private/$CTID
+mv /vz/private/$CTID/dev /vz/private/$CTID/dev.old
-mv dev dev.old
+tar -xvf $CTID.dev.tar -C /vz/private/$CTID
 </pre>

@@ Line 14: / Line 14: @@
 </pre>
 ==Install centos-5-release packages==
 <pre>
-rpm -Uvh http://mirror.centos.org/centos/5/os/i386/CentOS/centos-release-notes-5.6-0.i386.rpm \ http://mirror.centos.org/centos/5/os/i386/CentOS/centos-release-5-6.el5.centos.1.i386.rpm
+vzctl exec $CTID rpm -Uvh http://mirror.centos.org/centos/5/os/i386/CentOS/centos-release-notes-5.6-0.i386.rpm \ http://mirror.centos.org/centos/5/os/i386/CentOS/centos-release-5-6.el5.centos.1.i386.rpm
 </pre>
 Note: centos-release-5 depends on notes-package, start with that one.
@@ Line 28: / Line 25: @@
 ==Backup dev==
-Backup your /dev/ directory, as initscripts needs udev and will remove vzdev you'll need the backup:
+Backup the container /dev/ directory, as initscripts needs udev and will remove vzdev you'll need the backup:
 <pre>
@@ Line 39: / Line 36: @@
 <pre>
-rpm -Uvh http://mirror.centos.org/centos/5/os/i386/CentOS/initscripts-8.45.33-1.el5.centos.i386.rpm --force --nodeps
+vzctl exec $CTID rpm -Uvh http://mirror.centos.org/centos/5/os/i386/CentOS/initscripts-8.45.33-1.el5.centos.i386.rpm --force --nodeps
 </pre>
 Note: If the "transfer failed", go to the [http://mirror.centos.org/centos/5/os/i386/CentOS/ CentOS5 mirror] and find the latest initscripts rpm and use that instead.
 ==Update conf file==

@@ Line 31: / Line 31: @@
 <pre>
-tar -cf dev.tar ./dev
+tar -cf dev.tar /vz/private/$CTID/dev
 </pre>

@@ Line 121: / Line 121: @@
 vzctl exec $CTID rpm --import http://mirrors.kernel.org/centos/RPM-GPG-KEY-CentOS-5
 </pre>
 ==Stop your VE==

@@ Line 62: / Line 62: @@
 Alternatively, use the 'sed' command to replace it:
 <pre>
-sed -i 's#OSTEMPLATE="centos-4#OSTEMPLATE="centos-5#g' /etc/vz/conf/$CSID.conf
+sed -i 's#OSTEMPLATE="centos-4#OSTEMPLATE="centos-5#g' /etc/vz/conf/$CTID.conf
 </pre>

@@ Line 34: / Line 34: @@
 </pre>
-==Install initscripts package (forced and with no deps)==
+==Install initscripts package==
 <pre>

@@ Line 6: / Line 6: @@
 follow these steps:
-==Create a container using centos-4-i386-minimal and set a valid nameserver==
+==Create the container==
 <pre>
 vzctl create $CTID --ostemplate centos-4-i386-minimal --config CONFIG_TEMPLATE --ipadd container_IP --hostname temp

@@ Line 126: / Line 126: @@
 <pre>
 cd /vz/private/$CTID
-rm -rf dev
+mv dev dev.old
 tar -xvf dev.tar
 </pre>

@@ Line 114: / Line 114: @@
 <pre>
-vzctl exec 113 rpm -e --justdb python-elementtree --nodeps
+vzctl exec $CTID rpm -e --justdb python-elementtree --nodeps
-vzctl exec 113 rpm --import http://mirrors.kernel.org/centos/RPM-GPG-KEY-CentOS-5
+vzctl exec $CTID rpm --import http://mirrors.kernel.org/centos/RPM-GPG-KEY-CentOS-5
 </pre>