Language Selection

English French German Italian Portuguese Spanish

My adventure upgrading RHEL5 to RHEL6

Filed under
Linux

Well, I’ve begun the migration and probably picked the hardest machine to start with. One of my goals here was to do a clean migration from a Red Hat Enterprise Linux 5 box to a Red Hat Enterprise Linux 6 box for a specific set of services, and to intentionally have SELinux in enforcing mode (I’m determined to no longer be intimidated by SELinux). The machine in question is probably one of the most important in my home network: it handles DHCP, DNS, LDAP, and Kerberos for authentication.

RHEL6 is amazing, but the migration was.. painful. But I take full responsibility for that pain… if I had read the migration guide (or even pertinent parts of it), I could have saved myself two long nights. Oh well, live and learn. The other goal was to not copy any existing configs over, but to re-edit new configs (some of these configs hail from Annvix, some from Mandriva Corporate Server… it was due a cleaning and updating).

DNS was easy enough, and DHCP was a piece of cake. Kerberos was pretty good, but moving from Kerberos 1.6 to 1.8 had one interesting gotchya.

rest here




More in Tux Machines

Linux on Servers

Debian, Devuan, and Ubuntu

  • My Free Software Activities in April 2016
    I handled a new LTS sponsor that wanted to see wheezy keep supporting armel and armhf. This was not part of our initial plans (set during last Debconf) and I thus mailed all teams that were impacted if we were to collectively decide that it was OK to support those architectures. While I was hoping to get a clear answer rather quickly, it turns out that we never managed to get an answer to the question from all parties. Instead the discussion drifted on the more general topic of how we handle sponsorship/funding in the LTS project.
  • Initial Planning For Ubuntu 16.10 Today At UOS
    Beyond the announcement that Ubuntu 16.10 won't ship with Mir and Unity 8 by default, many other items were discussed for the Ubuntu 16.10 release due out in October.
  • Ubuntu 16.10 Isn't Going To Use Mir / Unity 8 By Default
    Well, another setback for Unity 8 and Mir. Kicking off the Ubuntu Online Summit for Ubuntu 16.10, it's been confirmed that the Unity 8 desktop and Mir display server will not be the default for the desktop spin. Similar to the current situation with existing Ubuntu releases, Unity 8 and Mir will be available as an opt-in feature for users wanting to upgrade their desktop, but Unity 7 and the faithful X.Org Server is planned to be the default for Ubuntu 16.10 Yakkety Yak.
  • Devuan Beta Release
    After two years in development, a beta release of the Devuan distro has made it into the world (Devuan is a registered trademark of the Dyne.org foundation). Devuan is a very Debian-ish distro. In fact, it basically is Debian, with one notable absence. Devuan doesn't use systemd. In fact, that's its main claim to fame. Devuan was created to offer an alternative to Debian fans who were alienated by the controversial switch to systemd.

Leftovers: OSS

today's howtos