Re: [ClusterLabs] how to setup single node cluster

2021-04-09 Thread Ken Gaillot
On Fri, 2021-04-09 at 08:20 +0300, Andrei Borzenkov wrote: > On 08.04.2021 09:26, d tbsky wrote: > > Reid Wahl > > > I don't think we do require fencing for single-node clusters. > > > (Anyone at Red Hat, feel free to comment.) I vaguely recall an > > > internal mailing list or IRC conversation

Re: [ClusterLabs] how to setup single node cluster

2021-04-08 Thread Andrei Borzenkov
On 08.04.2021 09:26, d tbsky wrote: > Reid Wahl >> I don't think we do require fencing for single-node clusters. (Anyone at Red >> Hat, feel free to comment.) I vaguely recall an internal mailing list or IRC >> conversation where we discussed this months ago, but I can't find it now. >> I've

Re: [ClusterLabs] how to setup single node cluster

2021-04-08 Thread Strahil Nikolov
I always though that the setup is the same, just the node count is only one. I guess you need pcs, corosync + pacemaker.If RH is going to support it, they will require fencing. Most probably sbd or ipmi are the best candidates. Best Regards,Strahil Nikolov On Thu, Apr 8, 2021 at 6:52, d

Re: [ClusterLabs] how to setup single node cluster

2021-04-08 Thread d tbsky
Reid Wahl > Disaster recovery is the main use case we had in mind. See the RHEL 8.2 > release notes: > - > https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.2_release_notes/rhel-8-2-0-release#enhancement_high-availability-and-clusters > > I thought I also

Re: [ClusterLabs] how to setup single node cluster

2021-04-08 Thread Reid Wahl
On Wed, Apr 7, 2021 at 11:27 PM d tbsky wrote: > Reid Wahl > > I don't think we do require fencing for single-node clusters. (Anyone at > Red Hat, feel free to comment.) I vaguely recall an internal mailing list > or IRC conversation where we discussed this months ago, but I can't find it >

Re: [ClusterLabs] how to setup single node cluster

2021-04-08 Thread d tbsky
Reid Wahl > I don't think we do require fencing for single-node clusters. (Anyone at Red > Hat, feel free to comment.) I vaguely recall an internal mailing list or IRC > conversation where we discussed this months ago, but I can't find it now. > I've also checked our support policies

Re: [ClusterLabs] how to setup single node cluster

2021-04-08 Thread Klaus Wenninger
On 4/8/21 8:16 AM, Reid Wahl wrote: On Wed, Apr 7, 2021 at 9:46 PM Strahil Nikolov > wrote: I always though that the setup is the same, just the node count is only one. I guess you need pcs, corosync + pacemaker. If RH is going to support it,

Re: [ClusterLabs] how to setup single node cluster

2021-04-08 Thread Reid Wahl
On Wed, Apr 7, 2021 at 9:46 PM Strahil Nikolov wrote: > I always though that the setup is the same, just the node count is only > one. > > I guess you need pcs, corosync + pacemaker. > If RH is going to support it, they will require fencing. Most probably sbd > or ipmi are the best candidates. >

[ClusterLabs] how to setup single node cluster

2021-04-07 Thread d tbsky
Hi: I found RHEL 8.2 support single node cluster now. but I didn't find further document to explain the concept. RHEL 8.2 also support "disaster recovery cluster". so I think maybe a single node disaster recovery cluster is not bad. I think corosync is still necessary under single node