Re: [CentOS] upgrading from CentOS 7 to 8
On 10/1/19 10:57 AM, MAILIST wrote: >> Your answer has nothing to do with the original question which is related >> to upgrade method and not condition for reinstalling without loosing >> data. > > After 40 years of upgrading many different operating systems, > Windows (from 3.1 to 10), CentOS 6 to 8, Ubuntu, Fedora, Red Hat, > AT Unix, VAX VMS; I have never observed an upgrade from one major > version to the next to work. The last one I tried using their "upgrade > process" was Ubuntu 18 to 19. Didn't work. Not trying to undermine what you said. I totally believe that different situations deserve different solutions. In my career, I've managed many Debian, Ubuntu, Fedora, and CentOS systems, and I found that in-situ upgrading of Debian, Ubuntu, and Fedora are usually easy and convenient. If you are using 3rd party repos/PPAs you sometimes need to disable them and/or remove some packages, but nothing can't be solved by a few apt/yum/dnf commands. Most of my Debian/Ubuntu servers only need to be installed once when we got the hardware, and they are upgraded through several major versions before being retired. Debian has especially well written documentation for each release on how to upgrade from previous versions. I've about three dozen shared and heavily used Fedora workstations that haven't been reinstalled since 2012? And we have upgraded them through each Fedora release using yum/dnf. The only problem I could remember was when we found that our initial allocation for the /boot partition turned out to be too small in recent years, when kernels are becoming monstrous. We simply adjusted the partitions and rsync'ed the whole root directory from backup. Still didn't do reinstall. These upgrades were usually done by volunteer student admins following Fedora's documentation, and few of them complained. Same can be said for our Ubuntu laptops. In most cases, end user just needed to click Upgrade when a new major version was released, and most of them went through without much trouble. Although the new versions were usually buggy in many ways, it usually wasn't the upgrade process to be blamed. However, that can't be said for CentOS/RHEL. You are totally right that CentOS are better reinstalled/imaged rather than upgraded. -- Elliot ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Anyone with RedHat Subscription?
On 7/2/19 6:18 AM, Giles Coochey wrote: Does Anyone with a RedHat subscription able to give a hint as to what the solution to the following knowledgebase article is: https://access.redhat.com/solutions/2801051 You only need a Red Hat account, not subscription. I can read it after logging in my Red Hat account, and I have no subscription of any product. With a free Red Hat account you can also get free RHEL for development purposes (do read the terms). -- Elliot ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Please Recommend Affordable and Reliable Cloud Storage for 50 TB of Data
On 2/15/19 7:22 AM, Warren Young wrote: On Feb 15, 2019, at 7:56 AM, Yan Li wrote: G Suite Business tier. Buy five users and you get unlimited Google Drive storage. That's $50/month. So, you’re already 12x higher than his budget, and it’ll be going up 20% in early April. Sorry. I read $50/month... My bad. I can say from personal experience that Google is a bit stingy about such things. They give G Suite basic users 30 GB of storage, but if you try to put tens of GB in it, you can only pull that all down a few times a month before that user’s account gets locked. That happened to us with one user that kept blowing up his laptop, requiring a rebuild, and thus a re-download of the entire IMAP archive he insisted on keeping in the cloud. True. If they’re doing that to us, 3 orders of magnitude down from the OP’s target value, I think he’ll have a bad time trying to put 50 TB into a single Google Drive account. OP should check if their university already offers G Suite. Most colleges in US do, and they come with unlimited storage (with all the shortcomings you mentioned above). -- Elliot ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
[CentOS-virt] How to kickstart a guest with Centos 6.6 Xen 4.4
Hello, I posted a question over at xenproject.org but it was recommended that I send out a message here for help. My post there: http://www.xenproject.org/help/questions-and-answers/vanilla-pv-centos-guest-via-kickstart-centos-6-6,-xen-4-4.html The TL;DR is: Everything I've found to kickstart a new vanilla rhel/centos guest points to specifying a kernel and initrd- for RHEL/Centos 5. But where is the xen initrd for Centos 6? The Xen4Quickstart instructions are awesome, but after install you are left with a kernel and an initramfs no initrd for a centos 6 guest in xen. So is there a better way to kickstart a fresh/vanilla VM post Xen4Quickstart instructions? Shall I build an initrd from the initramfs (and how) or is there another way? Apologies if this is discussed elsewhere, but if it is I have yet to find it and I've been looking around for some time. Thank you! ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] Can KVM and VirtualBox co-exist on same host?
you'll probably have to pull the VirtualBox guest addons out... and install the KVM guest stuff If you're taking that route, I recommend looking in to libguestfs to mount the image like you would a disk. -- Elliot Speck http://elliot.pro/ --- Original Message --- From: Scott Dowdle dow...@montanalinux.org Sent: 25 July 2014 12:43 am To: byrn...@harte-lyne.ca, Discussion about the virtualization on CentOS centos-virt@centos.org Subject: Re: [CentOS-virt] Can KVM and VirtualBox co-exist on same host? Greetings, - Original Message - A supplemental question: Is there any way to convert a VB guest image into a KVM guest image? I believe qemu-image can convert between a few different virtualization disk image formats. Of course that just changes the disk image itself... and not the drivers inside... so if you do convert it (I'd recommend working on a copy)... then you'll probably have to pull the VirtualBox guest addons out... and install the KVM guest stuff... but it shouldn't be that difficult. TYL, -- Scott Dowdle 704 Church Street Belgrade, MT 59714 (406)388-0827 [home] (406)994-3931 [work] ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
