Upgrade to CentOS 6.6 from CentOS 6.5/6.4/6.3/6.2/6.1/6.0

CentOS 6.6 is released. This is quick guide, howto upgrade to CentOS 6.6 from CentOS 6.5/6.4/6.3/6.2/6.1/6.0. I have tested this method on multiple CentOS 6 (servers / desktops) and everything looks work fine after upgrade.

Upgrade to CentOS 6.6 from CentOS 6.5/6.4/6.3/6.2/6.1/6.0

1. Change to root User

2. Backup all important data

  • Backup /etc diretory
  • Backup important logs /var/log
  • Backup web server configs and sites
  • Dump MySQL databases
  • Dump PostgreSQL databases
  • Backup all what you need if something goes wrong

3. Check list of packages that are going to be updated

4. Upgrade with yum update

Official way to do upgrade:

Another way to do update is first clean all, second update glibc, yum, rpm and python packages and then update other packages like following:

5. Reboot

6. Check CentOS 6.6 (Final) release info and Check your entire system

Following needs redhat-lsb package

Check that your system is working normally and test every services.

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26 Comments

  1. Hi.

    You can make this:

    su – or su -i
    tar -zcvf etc.tar.gz /etc —> you generate a tar.gz file, for uncompress after.
    For many routes:
    tar -zcvf web_server.tar.gz /etc/httpd/ /var/www/html/ –> and many

    It’s a simple way for obtain a backup fastly.

    Bye. See you later!

    Reply
  2. 6.3 update to 6.5 by “yum upgrade”

    Reply
  3. The easiest way is to run yum upgrade

    Reply

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