Difference between revisions of "Convert RH/OL To CentOS"

From The Linux Source
Jump to: navigation, search
(Created page with "= Converting RedHat/Oracle Systems to CentOS\n\nNotes: only tested on RedHat 6, currently adding RedHat 5 steps.\n'cat /etc/redhat-release' shows RedHat or Oracle before thes...")
 
Line 1: Line 1:
−
=  Converting RedHat/Oracle Systems to CentOS\n\nNotes: only tested on RedHat 6, currently adding RedHat 5 steps.\n'cat /etc/redhat-release' shows RedHat or Oracle before these steps\n\n1. browse to the centos repo to get the link for the latest centos-release package, right-click/copy link/url\n{panel}\n[http://mirror.centos.org/centos/5/os/x86_64/CentOS]\n[http://mirror.centos.org/centos/6/os/x86_64/Packages]\n[http://mirror.centos.org/centos/7/os/x86_64/Packages]\n{panel}\n\n2. wget the package/url (may need to specify a proxy) (or use 'curl --proxy sc9-proxy.example.net:3128 -O [http://mirror.centos.org/centos/6/os/x86_64/Packages/centos-release-6-8.el6.centos.12.3.x86_64.rpm]')\n{panel}\nENT 5\n# wget [http://mirror.centos.org/centos/5/os/x86_64/CentOS/centos-release-5-11.el5.centos.x86_64.rpm] [http://mirror.centos.org/centos/5/os/x86_64/CentOS/centos-release-notes-5.11-0.x86_64.rpm]\nENT 6\n# wget [http://mirror.centos.org/centos/6/os/x86_64/Packages/centos-release-6-8.el6.centos.12.3.x86_64.rpm]\nENT 7\n# wget [http://mirror.centos.org/centos/7/os/x86_64/Packages/centos-release-7-2.1511.el7.centos.2.10.x86_64.rpm]\n{panel}\n\n3. install centos-release (plus release notes dependency for RedHat 5) and remove redhat-release\nNote: 'cat /etc/redhat-release' shows CentOS after this step\n{panel}\nRedHat 5\n# rpm -i --force centos-release-5-11.el5.centos.x86_64.rpm centos-release-notes-5.11-0.x86_64.rpm\n# rpm -e redhat-release-5Server redhat-release-notes-5Server\nRedHat 6\n# rpm -i --force centos-release-6-8.el6.centos.12.3.x86_64.rpm\n# rpm -e redhat-release-server\nRedHat 7\n# rpm -e --nodeps redhat-release-server\n# rm -rf /usr/share/redhat-release /usr/share/doc/redhat-release /etc/system-release-cpe.rpmsave /etc/os-release.rpmsave\n# rpm -i --force centos-release-7-2.1511.el7.centos.2.10.x86_64.rpm\n{panel}\n\n4. system can now be subscribed to CentOS spacewalk channel with --force option, or add CentOS-Base.repo to /etc/yum.repos.d/CentOS-Base.repo\n\n5. remove additional RedHat packages and replace with corresponding CentOS packages\n{panel}\nRedHat 5\n# yum update redhat-logos\n# rpm -e redhat-support-tool redhat-support-lib-python Deployment_Guide-en-US htmlview redhat-menus\n\nNOTE : order is important for RPM dependencies\n\nRedHat 6\n# rpm -e --nodeps redhat-indexhtml\n# yum install centos-indexhtml\n# yum update redhat-logos\n# rpm -e redhat-support-tool redhat-support-lib-python redhat-access-insights\nIF you see a yum message about lynx-2.x.x-xx.el6.x86_64 has missing requires of redhat-indexhtml\n# yum reinstall lynx\nRedHat 7\n# rpm -e --nodeps redhat-indexhtml redhat-logos\n# yum install centos-indexhtml centos-logos\n# yum update abrt\n# rpm -e redhat-support-tool redhat-support-lib-python redhat-access-insights
+
Notes: only tested on RedHat 6, currently adding RedHat 5 steps.<br>
 +
'cat /etc/redhat-release' shows RedHat or Oracle before these steps
 +
 
 +
1. browse to the centos repo to get the link for the latest centos-release package, right-click/copy link/url
 +
[http://mirror.centos.org/centos/5/os/x86_64/CentOS]
 +
[http://mirror.centos.org/centos/6/os/x86_64/Packages]
 +
[http://mirror.centos.org/centos/7/os/x86_64/Packages]
 +
2. wget the package/url (may need to specify a proxy) (or use 'curl --proxy sc9-proxy.example.net:3128 -O [http://mirror.centos.org/centos/6/os/x86_64/Packages/centos-release-6-8.el6.centos.12.3.x86_64.rpm]')
 +
ENT 5
 +
# wget [http://mirror.centos.org/centos/5/os/x86_64/CentOS/centos-release-5-11.el5.centos.x86_64.rpm]  
 +
[http://mirror.centos.org/centos/5/os/x86_64/CentOS/centos-release-notes-5.11-0.x86_64.rpm]
 +
ENT 6
 +
# wget [http://mirror.centos.org/centos/6/os/x86_64/Packages/centos-release-6-8.el6.centos.12.3.x86_64.rpm]
 +
ENT 7
 +
# wget [http://mirror.centos.org/centos/7/os/x86_64/Packages/centos-release-7-2.1511.el7.centos.2.10.x86_64.rpm]
 +
3. install centos-release (plus release notes dependency for RedHat 5) and remove redhat-release<br>
 +
Note: 'cat /etc/redhat-release' shows CentOS after this step
 +
RedHat 5
 +
# rpm -i --force centos-release-5-11.el5.centos.x86_64.rpm centos-release-notes-5.11-0.x86_64.rpm
 +
# rpm -e redhat-release-5Server redhat-release-notes-5Server
 +
RedHat 6
 +
# rpm -i --force centos-release-6-8.el6.centos.12.3.x86_64.rpm
 +
# rpm -e redhat-release-server
 +
RedHat 7
 +
# rpm -e --nodeps redhat-release-server
 +
# rm -rf /usr/share/redhat-release /usr/share/doc/redhat-release /etc/system-release-cpe.rpmsave /etc/os-release.rpmsave
 +
# rpm -i --force centos-release-7-2.1511.el7.centos.2.10.x86_64.rpm
 +
4. system can now be subscribed to CentOS spacewalk channel with --force option, or add CentOS-Base.repo to /etc/yum.repos.d/CentOS-Base.repo
 +
 
 +
5. remove additional RedHat packages and replace with corresponding CentOS packages
 +
RedHat 5
 +
# yum update redhat-logos
 +
# rpm -e redhat-support-tool redhat-support-lib-python Deployment_Guide-en-US htmlview redhat-menus
 +
NOTE : order is important for RPM dependencies
 +
RedHat 6
 +
# rpm -e --nodeps redhat-indexhtml
 +
# yum install centos-indexhtml
 +
# yum update redhat-logos
 +
# rpm -e redhat-support-tool redhat-support-lib-python redhat-access-insights
 +
IF you see a yum message about lynx-2.x.x-xx.el6.x86_64 has missing requires of redhat-indexhtml
 +
# yum reinstall lynx
 +
RedHat 7
 +
# rpm -e --nodeps redhat-indexhtml redhat-logos
 +
# yum install centos-indexhtml centos-logos
 +
# yum update abrt
 +
# rpm -e redhat-support-tool redhat-support-lib-python redhat-access-insights

Revision as of 12:08, 14 June 2017

Notes: only tested on RedHat 6, currently adding RedHat 5 steps.
'cat /etc/redhat-release' shows RedHat or Oracle before these steps

1. browse to the centos repo to get the link for the latest centos-release package, right-click/copy link/url 

[1]
[2]
[3]

2. wget the package/url (may need to specify a proxy) (or use 'curl --proxy sc9-proxy.example.net:3128 -O [4]') 

ENT 5
# wget [5] 
[6]
ENT 6
# wget [7]
ENT 7
# wget [8]

3. install centos-release (plus release notes dependency for RedHat 5) and remove redhat-release
Note: 'cat /etc/redhat-release' shows CentOS after this step 

RedHat 5
# rpm -i --force centos-release-5-11.el5.centos.x86_64.rpm centos-release-notes-5.11-0.x86_64.rpm
# rpm -e redhat-release-5Server redhat-release-notes-5Server
RedHat 6
# rpm -i --force centos-release-6-8.el6.centos.12.3.x86_64.rpm
# rpm -e redhat-release-server
RedHat 7
# rpm -e --nodeps redhat-release-server
# rm -rf /usr/share/redhat-release /usr/share/doc/redhat-release /etc/system-release-cpe.rpmsave /etc/os-release.rpmsave
# rpm -i --force centos-release-7-2.1511.el7.centos.2.10.x86_64.rpm

4. system can now be subscribed to CentOS spacewalk channel with --force option, or add CentOS-Base.repo to /etc/yum.repos.d/CentOS-Base.repo

5. remove additional RedHat packages and replace with corresponding CentOS packages 

RedHat 5
# yum update redhat-logos
# rpm -e redhat-support-tool redhat-support-lib-python Deployment_Guide-en-US htmlview redhat-menus
NOTE : order is important for RPM dependencies
RedHat 6
# rpm -e --nodeps redhat-indexhtml
# yum install centos-indexhtml
# yum update redhat-logos
# rpm -e redhat-support-tool redhat-support-lib-python redhat-access-insights
IF you see a yum message about lynx-2.x.x-xx.el6.x86_64 has missing requires of redhat-indexhtml
# yum reinstall lynx
RedHat 7
# rpm -e --nodeps redhat-indexhtml redhat-logos
# yum install centos-indexhtml centos-logos
# yum update abrt
# rpm -e redhat-support-tool redhat-support-lib-python redhat-access-insights
Retrieved from "http://thelinuxsource.org/index.php?title=Convert_RH/OL_To_CentOS&oldid=244"