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....)
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