similar to: KVM HA

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

Hello , Centos users: My name is Leandro, I have been using Centos for 4 years and this is the first post in this mail list. I would like to study and introduce myself in clustering and high availability for Centos, currently I have not experience at all about it. I would like to ask about the newest method to achieve high availability , load balancing on linux / Centos. So far I have seen the

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.

How about trying commercial RHEV? Eero 22.6.2016 8.02 ap. "Tom Robinson" <tom.robinson at motec.com.au> kirjoitti: > 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

Hi, I cannot 'halt' my CentOS 6 servers while running corosync+pacemaker. I believe the runlevels used to stop corosync and pacemaker are not in the correct order and create the infinite "Waiting for corosync services to unload..." loop thing. This is my first time with this cluster technology but apparently pacemaker has to be stopped /before/ corosync. Applying the following

I'm desparately looking for more ideas on how to debug what's going on with our CLVM cluster. Background: 4 node "cluster"-- machines are Dell blades with Dell M6220/M6348 switches. Sole purpose of Cluster Suite tools is to use CLVM against an iSCSI storage array. Machines are running CentOS 5.8 with the Xen kernels. These blades host various VMs for a project. The iSCSI

Bonjour, J''aimerai mettre en place un cluster sous Xen ou XenServer avec 2 serveurs dell R 710. J''aimerai pouvoir monter un cluster en utilisant l''espace disque entiere des 2 serveurs cumulés ainsi que la mémoire Quelles sont vos retour d''expériences et vos configurations? Merci d''avance Cordialement Mat

On Wed, Jun 22, 2016 at 11:08 AM, Barak Korren <bkorren at redhat.com> wrote: > > > > 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? > > You can use oVirt for that (www.ovirt.org). > When an UNCLEAN SHUDWON happens or ifdown eth0 in node1 , can OVIRT migrate VMs

I've been trying to build a model cluster using three virtual machines on my home server. Each VM boots off its own dedicated partition (CentOS 7.3). One partition is designated to be the common /home partition for the VMs, (on the real machine it will mount as /cluster). I'm intending to run GFS2 on the shared partition, so I need to configure DLM and corosync. That's where I'm

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi! I think I stumbled on at least two bugs in the CentOS 7.2 pacemaker package, though I'm not quite sure if or where to report it. I'm using the following package to set up a 2-node active/passive cluster: [root at clnode1 ~]# rpm -q pacemaker pacemaker-1.1.13-10.el7_2.4.x86_64 The installation is up-to-date on both nodes as of the

Hello all, I am trying to create a corosync/pacemaker cluster using CentOS 6.0. However, I'm having a great deal of difficulty doing so. Corosync has a valid configuration file and an authkey has been generated. When I run /etc/init.d/corosync I see that only corosync is started. >From experience working with corosync/pacemaker before, I know that this is not enough to have a functioning

Hi Digimer, Thanks for your reply. On 22/06/16 15:20, Digimer wrote: > 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

Hi, Not sure if I should post in samba-technical or just samba list. Please advise. Back in February I was trying to do a samba-tool classicupgrade but kept getting SIGSEGV: https://lists.samba.org/archive/samba/2017-February/206409.html I didn't progress much after that. This week I've compiled samba-4.6.5 and installed that. Following the HOW-TO for classic upgrade

Hello, I'm planning migration of current two clusters based on CentOS 6.x with Cman/Rgmanager going to CentOS 7.x and Corosync/Pacemaker. As the clusters and their services are on the same subnet, and there no particular security concerns differentiating them, I'm also evaluating the option to transform the two clusters into a unique 4-node one during the upgrade. Currently I'm

Hi, I need to create a real-time replication of a partition between two servers with centos 6.4, I am researching and finding difficulty with drbd, corosync, someone indicate material, do not need to run script automatically if a node drops only replicate. Grateful. -- Sergio.Alex

The most recent message is: [3108269.919256] sd 2:0:1:0: timing out command, waited 1080s [3108269.919528] sd 2:0:1:0: [sdb] Unhandled error code [3108269.919535] sd 2:0:1:0: [sdb] Result: hostbyte=DID_OK driverbyte=DRIVER_OK [3108269.919540] sd 2:0:1:0: [sdb] CDB: Read(10): 28 00 00 01 21 47 00 00 08 00 [3108269.919586] EXT4-fs error (device sdb1): ext4_find_entry: reading directory #2 offset 0

Hi Guys, I overhauled and simplified the Pacemaker hooks recently. This patch: - Reuses more code from the Pacemaker libraries - Escalates fencing to the cluster manager instead of initiating it directly Attached patch is against master, or you can pull the original patch which is against an older version used by SUSE:

I've got a Centos 5.8 box that I use for testing Xen VMs. I'm trying to setup some Centos 6.2 hosts in a high availability situation. I've tried the pacemaker route and couldn't get the connection established, so thought I'd try the RH-preferred methods. Mind you, all of these VMs are on the same host. Using Conga, it seems that I need some sort of fencing device, which

CentOS Linux release 7.2.1511 (Core) Hi, Last night our CentOS 7 server rebooted. Seemingly it's a very clean reboot. I can't find a shred of evidence as to why it happened though. Things I've checked: * sa reports * /var/log/{messages,secure,dmesg,cron} * /var/log/audit/audit.log * lastlog The host is used for KVM virtualisation and connects via multipathing to our OmniOS SAN via

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