CentOS Upgrade Reference

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CentOS Production system upgrade strategy:

1) Pre-upgrade assessment

A) Confirm kernel or package bug.

b) Use of evaluation tools

c) Test validation

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2) Confirm the upgrade content

A) upgrade kernel separately

b) Upgrade Packages individually

c) All upgrades

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4) Confirm the upgrade method:

A) A small number of system ISO uploads, build local Yum source upgrade. or download the required package to make it into a repo source.

b) Multi-volume system to build the local area network Yum source server, FTP or HTTP.

c) Batch Testing

d) Perform the upgrade

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Domestic Linux Technology website

Www.linuxidc.com

Www.centoscn.com

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Kernel official website

www.kernel.org

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Upgrade Reference Links:

Https://wiki.centos.org/TipsAndTricks/CentOSUpgradeTool

Https://wiki.centos.org/FAQ/CentOS7

http://elrepo.org/tiki/tiki-index.php

http://www.zxsdw.com/index.php/archives/1227/

Http://www.centoscn.com/image-text/setup/2014/0901/3634.html

Http://wenku.baidu.com/link?url=4keeXXGwDf6M7h2jVyxIAPO9UUvbfIAEqyNHCLkOf_ Zg6ke-c-uuj6dobqzqz243sf9x5boeepnj2r7mh8-ipx_gxhgb-doxcvdlkt_ahuu

Http://www.centoscn.com/CentOS/config/2014/0912/3729.html

http://blog.itpub.net/27771627/viewspace-1256552

Http://www.linuxidc.com/Linux/2014-11/109647.htm

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Preupgrade Evaluation Tool Trial start experience

Configuring the Repo Source

Vim/etc/yum.repos.d/upgrade.repo

[Upgrade]

Name=upgrade

baseurl=http://dev.centos.org/centos/6/upg/x86_64/

Enable=1

Gpgcheck=0

Install the evaluation package

[Email protected] yum.repos.d]# yum-y install preupgrade-assistant-contents redhat-upgrade-tool preupgrade-assistant

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Perform evaluations

[Email protected] yum.repos.d]# PREUPG

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Browse Reports Result.html

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CentOS Upgrade Reference