On Wed, Feb 17, 2016 at 2:15 AM, Yasha Karant <[email protected]> wrote: > I have burned the current production SL 7.2 4 Gbyte install DVD. The DVD > boots but does not seem to have an upgrade option, only an install option. > Note that I plan to overwrite all files/partitions used by the system (but > not /home , /opt , /usr/local that is a separate partition from /usr, and > the like).
This has been heavily discussed over in the CentOS lists. The dependencies for updating a RHEL server to RHEL 7 are potentially dangerous enough that RHEL is recommending against it. They provide a utility, but it's proven pretty fragile if you've been installing non-standard components, as I've seen you attest to various times on this list. And the regression testing for that kind of major, major upgrade to systemd based service management and the re-architecture of NetworkManager and the switch from "/bin" to a symlink to "/usr/bin" is just plain nasty to cope with. So bringing the published tools into Scientific Linux compatibility is a serious, serious potential for one heck of a lot of work. If your host is already SL 7.1, you should be able to simply use the "scientific/7/" repos to get the updated > Currently, a number of add-on repositories (e.g., elrepo) for 7.1 are > searched by the software installer. Will these be saved and used for 7.2 or > must these manually either be saved or reinstalled after the 7.2 update? Those are mostly using "epel/7/", "elrepo/7/", etc., and should not be a problem if you are already on SL 7.x. > Are there instructions (URL?) for the upgrade, or is there a mechanism to > invoke the DVD-based installer to do the update? I do not want to use an > Internet update because of the latency -- I want to do the upgrade from > local (DVD) media. Is this possible? > > Yasha Karant If you;re already on SL 7.x, you should be able to mount the CD and do "yum -y update /mnt/[whatever]/Packages/sl-release*.rpm" and get most of the changes availabale.
