Re: [ClusterLabs] I've been working on a split-brain prevention strategy for 2-node clusters.

2016-10-10 Thread Andrew Beekhof
On Mon, Oct 10, 2016 at 8:04 AM, Digimer wrote: > > The only geo-located/stretch cluster approach that I've seen that makes > any sense and seems genuinely safe is SUSE's 'pacemaker booth' project. Also arriving in RHEL 7.3 Might be tech preview though.

Re: [ClusterLabs] I've been working on a split-brain prevention strategy for 2-node clusters.

2016-10-10 Thread Klaus Wenninger
On 10/10/2016 04:25 PM, Ken Gaillot wrote: > On 10/09/2016 11:02 PM, Digimer wrote: >> On 09/10/16 11:58 PM, Andrei Borzenkov wrote: >>> 10.10.2016 00:42, Eric Robinson пишет: Digimer, thanks for your thoughts. Booth is one of the solutions I looked at, but I don't like it because it is

Re: [ClusterLabs] I've been working on a split-brain prevention strategy for 2-node clusters.

2016-10-09 Thread Digimer
On 09/10/16 11:58 PM, Andrei Borzenkov wrote: > 10.10.2016 00:42, Eric Robinson пишет: >> Digimer, thanks for your thoughts. Booth is one of the solutions I >> looked at, but I don't like it because it is complex and difficult to >> implement > > HA is complex. There is no way around it. > >>

Re: [ClusterLabs] I've been working on a split-brain prevention strategy for 2-node clusters.

2016-10-09 Thread Andrei Borzenkov
10.10.2016 00:42, Eric Robinson пишет: > Digimer, thanks for your thoughts. Booth is one of the solutions I > looked at, but I don't like it because it is complex and difficult to > implement HA is complex. There is no way around it. > (and perhaps costly in terms of AWS services or something >

Re: [ClusterLabs] I've been working on a split-brain prevention strategy for 2-node clusters.

2016-10-09 Thread Eric Robinson
g? -- Eric Robinson -Original Message- From: Digimer [mailto:li...@alteeve.ca] Sent: Sunday, October 09, 2016 2:05 PM To: Cluster Labs - All topics related to open-source clustering welcomed <users@clusterlabs.org> Subject: Re: [ClusterLabs] I've been working on a split-brain

Re: [ClusterLabs] I've been working on a split-brain prevention strategy for 2-node clusters.

2016-10-09 Thread Kostiantyn Ponomarenko
I faced with the same problem a few years ago - we needed to make a two-node cluster working in a "split-brain" situation. We were looking at a resource agent called SFEX which is disk based - http://www.linux-ha.org/wiki/Sfex_(resource_agent) . At the end we rejected SFEX because, if I am not

[ClusterLabs] I've been working on a split-brain prevention strategy for 2-node clusters.

2016-10-09 Thread Eric Robinson
I've been working on a script for preventing split-brain in 2-node clusters and I would appreciate comments from everyone. If someone already has a solution like this, let me know! Most of my database clusters are 2-nodes, with each node in a geographically separate data center. Our layout