On 05/10/2016 01:29 PM, m.roth at 5-cent.us wrote: > Alice Wonder wrote: >> On 05/10/2016 12:19 AM, Johnny Hughes wrote: >>> On 05/10/2016 02:08 AM, Venkateswara Rao Dokku wrote: >>>> >>>> I would like to know whether the valid upgrade path will be present >>>> from CentOS 7 to future versions like we get for Ubuntu or some other >>>> operating systems. >>>> >>>> Right now, I am sure that we do not have proper update path in CentOS >>>> to move from one version to another. >>> >> I tend to keep all server content in /srv and all user content in /home >> >> Upgrading from one major version to another then is pretty simple - but >> not on the same machine. >> >> I do a fresh install of the new version in a new vm, make sure all the >> services are in place, and all the user and group ids match. > <snip> > I had an article published in the late, lamented SysAdmin magazine about > 10 years ago, where I recommended having a three of spare partitions, > doing an install using those for /, /usr and /boot - though now you could > get away with / and /boot. Then, if you had show-stopper issues, you could > always boot back via the old partitions. > > Where I work, I don't think we have a handful of VMs... because in a lot > of cases, we need every bloody CPU cycle. For example, we have an SGI > UV2000, a small, true supercomputer, 512 cores, 2TB RAM...and I see top > telling me that one of my users's multithreaded parallel job has a load of > it of 467 (and no, I'm not misplacing the decimal point....) > Ah - yes, different perspective I suppose. Vast majority of servers I manage are VMs purchased for a monthly fee from a service provider like linode. If you run the physical hardware yourself that is a completely different set of circumstances, point taken.