similar to: Announcing a new HA KVM tutorial!

Hi all, I'm happy to announce a new tutorial! https://alteeve.com/w/2-Node_Red_Hat_KVM_Cluster_Tutorial This tutorial walks a user through the entire process of building a 2-Node cluster for making KVM virtual machines highly available. It uses Red Hat Cluster services v3 and DRBD 8.3.12. It is written such that you can use entirely free or fully Red Hat supported environments.

Hi all, I'm happy to announce a new tutorial! https://alteeve.com/w/2-Node_Red_Hat_KVM_Cluster_Tutorial This tutorial walks a user through the entire process of building a 2-Node cluster for making KVM virtual machines highly available. It uses Red Hat Cluster services v3 and DRBD 8.3.12. It is written such that you can use entirely free or fully Red Hat supported environments.

On 22/06/16 01:01 AM, Tom Robinson wrote: > Hi, > > I have two KVM hosts (CentOS 7) and would like them to operate as High Availability servers, > automatically migrating guests when one of the hosts goes down. > > My question is: Is this even possible? All the documentation for HA that I've found appears to not > do this. Am I missing something? Very possible. It's

Hi, I have two KVM hosts (CentOS 7) and would like them to operate as High Availability servers, automatically migrating guests when one of the hosts goes down. My question is: Is this even possible? All the documentation for HA that I've found appears to not do this. Am I missing something? My configuration so fare includes: * SAN Storage Volumes for raw device mappings for guest vms

On 01/06/15 12:00 PM, Digimer wrote: > Hi all, > > I'm developing a program that is not a distro, per-se, but sort of > acts like one. Basically, it's a modified CentOS ISO with some extra > RPMs added, unneeded RPMs removed and containing a modified boot screen > and install selection list. > > The list says "CentOS", so a user knows the installed

so I have a bunch of servers at work that are on DUAL UPS's (1 per each of 2 power supplies). Its mostly HP gear, but also some Sun and IBM. Ideally I'd like the system to not go into shutdown unless BOTH UPS's that a particular box is plugged into (there's actually 4 UPS, 2 per each of 2 racks). Has anyone ever configured anything like that with NUT or whatever? Right

CentOS-6.5 We have a KVM guest running MS-WinV7pro. This guest is joined to an Active Directory Domain. That domain provides DHCP to the members. The KVM guest does not obtain its IP from the domain but from the local host's qemu hypervisor instead. Is there anyway to get around this and have the guest MS-Win OS get its DHCP from the same place as the rest of the domain members? -- ***

CentOS-6.5 We have a KVM guest running MS-WinV7pro. This guest is joined to an Active Directory Domain. That domain provides DHCP to the members. The KVM guest does not obtain its IP from the domain but from the local host's qemu hypervisor instead. Is there anyway to get around this and have the guest MS-Win OS get its DHCP from the same place as the rest of the domain members? -- ***

Once upon a time, Digimer <lists at alteeve.ca> said: > The cluster software and any hosted services aren't running. It's not > that they think they're wrong, they just have no existing state so they > won't try to touch anything without first ensuring it is safe to do so. Well, I was being short; what I meant was, in HA, if you aren't known to be right, you are

hi everybody, would you know if 8 version is going to have HA solutions from clusterlabs.org available, just like Centos7 has? (from Centos' own repos/streams) many thanks, L.

I had so much trouble putting Centos 6 guest VMs on a Centos 5 host that I finally switched to a Centos 6 host. I've not needed more that test VMs, so I've used Virtual Machine Manager on the old system, which worked pretty well, so I decided to create my first KVM guest machine. I noticed when I created it, I only had the options of NAT for my network interface, so I used that

On Tue, Dec 15, 2015 at 6:36 PM, Digimer <lists at alteeve.ca> wrote: > On 15/12/15 10:17 AM, Traiano Welcome wrote: >> Hi All >> >> Is it possible to upgrade from CentOS 6.7 to CentOS 7? >> >> I see there is some attempt at an upgrade tool available, but it's >> apparently broken: >> >>

Once upon a time, John R Pierce <pierce at hogranch.com> said: > On 6/22/2016 10:47 AM, Digimer wrote: > >This is called "fabric fencing" and was originally the only supported > >option in the very early days of HA. It has fallen out of favour for > >several reasons, but it does still work fine. The main issues is that it > >leaves the node in an unclean

> I'm guessing you're using standard 7,200rpm platter drives? You'll need > to share more information about your environment in order for us to > provide useful feedback. Usually though, the answer is 'caching' and/or > 'faster disks'. Yes , 7.2k rpm disks. 2T mirror (soft). In fact, I had such a preference for slightly more capacity. Unfortunately very

On 12-03-2015 17:39, Digimer wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > On 12/03/15 04:29 PM, Gilbert Sebenste wrote: >> Hello everyone, >> >> A network engineer buddy of mine brought up for discussion with me >> that he'd like to do some throughput testing, but he's new to >> Linux/RedHat. Is there any software I can recommend to

Hi all, I use virt-manager as a way to give customers direct access to their (virtual) servers. This is important for things like OS installs or when do admin work where the network is down. This means I have to install a little linux machine though as none of my clients are linux shops. So I got to wondering; If I understand, virt-manager is more or less a hypervisor-aware VNC client,

On 8 March 2016 at 19:02, Digimer <lists at alteeve.ca> wrote: > On 08/03/16 01:51 PM, James Hogarth wrote: > > On 8 March 2016 at 17:22, Digimer <lists at alteeve.ca> wrote: > > > >> On 08/03/16 11:36 AM, James Hogarth wrote: > >>> On 8 March 2016 at 16:15, Digimer <lists at alteeve.ca> wrote: > >>> > >>>> On

Hi all, One of our domU VMs (CentOS 5.6 x86_64) runs a cobol application, which in turn called ''clock'' to get timestamps. Changing this is non-trivial. When I try to call ''clock --debug'' I get: [root@vm0010 ~]# clock --debug hwclock from util-linux-2.13-pre7 hwclock: Open of /dev/rtc failed, errno=19: No such device. No usable clock interface found.

Hello, On Fri, 17 Nov 2017 10:34:53 -0500 Digimer <lists at alteeve.ca> wrote: > On 2017-11-17 10:16 AM, m.roth at 5-cent.us wrote: > > I can't seem to find apcupsd for C 6. Just went to epel's website, and not > > visible. Anyone have a clue? > > > > mark > > I can't speak to epel, but we have copies of it if that helps you; >

Hi all. We've got a lot of customers running CentOS 5 and 6 servers. We've been asked by many to provide backup, which is something we don't want to do in house. So we started looking for backup companies to partner with. The problem is that the ones we've found who support RHEL won't support CentOS. So does anyone know of an online backup company that _will_