The biggest learning curve is systemd.
If you have service scripts for things, you will need to convert them.
Also file system defaults to xfs.
NFS also goes to the next version.


On Feb 9, 2018 3:53 PM, "Galen Seitz" <gal...@seitzassoc.com> wrote:

> Hi,
>
> My task for this weekend is to install CentOS 7 on my primary machine.
> It's currently running CentOS 6, so after tonight's backup I will
> perform the 7 install.  I've done other installs of 7, but this will be
> the first of a machine that is running important stuff.
>
> Here are some of the services that I currently have running.  Among
> these, ssh, postfix, and dovecot are the most critical.  The others can
> be brought up on an as needed basis.
>
> cups            0:off   1:off   2:on    3:on    4:on    5:on    6:off
> denyhosts       0:off   1:off   2:on    3:on    4:on    5:on    6:off
> dovecot         0:off   1:off   2:on    3:on    4:on    5:on    6:off
> fail2ban        0:off   1:off   2:off   3:on    4:on    5:on    6:off
> httpd           0:off   1:off   2:on    3:on    4:on    5:on    6:off
> postfix         0:off   1:off   2:on    3:on    4:on    5:on    6:off
> postgresql      0:off   1:off   2:on    3:on    4:on    5:on    6:off
> smb             0:off   1:off   2:on    3:on    4:on    5:on    6:off
> sshd            0:off   1:off   2:on    3:on    4:on    5:on    6:off
>
> If you've learned anything relevant from performing a CentOS, Scientific
> Linux, or RHEL migration, I'd love to hear it.  I've read through the
> Redhat Migration Guide, but I'd be interested in hearing any other words
> of wisdom regarding the move from 6 to 7.
>
> Thanks!
> galen
> --
> Galen Seitz
> gal...@seitzassoc.com
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