Re: [ClusterLabs] Why do clusters have a name?
On Wed, 2019-03-27 at 12:25 +0100, Jehan-Guillaume de Rorthais wrote: > On Wed, 27 Mar 2019 10:20:21 +0100 > Kristoffer Grönlund wrote: > > > On Wed, 2019-03-27 at 10:13 +0100, Jehan-Guillaume de Rorthais > > wrote: > > > On Wed, 27 Mar 2019 09:59:16 +0100 > > > Kristoffer Grönlund wrote: > > > > > > > On Wed, 2019-03-27 at 08:27 +0100, Ivan Devát wrote: > > > > > On 26. 03. 19 21:12, Brian Reichert wrote: > > > > > > This will sound like a dumb question: > > > > > > > > > > > > The manpage for pcs(8) implies that to set up a cluster, > > > > > > one > > > > > > needs > > > > > > to provide a name. > > > > > > > > > > > > Why do clusters have names? > > > > > > > > > > > > Is there a use case wherein there would be multiple > > > > > > clusters > > > > > > visible > > > > > > in an administrative UI, such that they'd need to be > > > > > > differentiated? > > > > > > > > > > > > > > > > For example in a web UI of pcs is a page with multiple > > > > > clusters. > > > > > > > > > > > > > We use cluster names and rules to apply the same exact CIB to > > > > multiple > > > > clusters, particularly when configuring geo clusters. > > > > > > I'm not sure to understand. Is it possible to have multiple > > > Pacemaker > > > daemon instances on the same serveurs? > > > > > > Or do you mean it is possible to have multiple namespace where > > > resources are > > > isolated in and one Pacemaker daemon to manage them? > > > > > > > I am not sure what you mean by the second, but I am fairly sure I > > don't > > mean either of those :) I'm talking about having multiple actual, > > distinct clusters > > distinct cluster of Pacemaker/corosync daemons on the same servers or > distinct > cluster of servers? > Distinct clusters of servers: Cluster "Tokyo" consisting of node A, B, C Cluster "Stockholm" consisting of node D, E, F Cluster "New York" consisting of node G, H, I All with the same CIB XML document. Using tickets, resources can then be moved from one cluster to the other, or cloned across multiple clusters. A cluster of clusters, if you will. Cheers, Kristoffer > > and sharing the same configuration across all of > > them, > > Same configuration like, the same file or the same content accross > different > files? > > Sorry for being bold...I just don't get it :/ > > ___ Manage your subscription: https://lists.clusterlabs.org/mailman/listinfo/users ClusterLabs home: https://www.clusterlabs.org/
Re: [ClusterLabs] Why do clusters have a name?
On Wed, 27 Mar 2019 10:20:21 +0100 Kristoffer Grönlund wrote: > On Wed, 2019-03-27 at 10:13 +0100, Jehan-Guillaume de Rorthais wrote: > > On Wed, 27 Mar 2019 09:59:16 +0100 > > Kristoffer Grönlund wrote: > > > > > On Wed, 2019-03-27 at 08:27 +0100, Ivan Devát wrote: > > > > On 26. 03. 19 21:12, Brian Reichert wrote: > > > > > This will sound like a dumb question: > > > > > > > > > > The manpage for pcs(8) implies that to set up a cluster, one > > > > > needs > > > > > to provide a name. > > > > > > > > > > Why do clusters have names? > > > > > > > > > > Is there a use case wherein there would be multiple clusters > > > > > visible > > > > > in an administrative UI, such that they'd need to be > > > > > differentiated? > > > > > > > > > > > > > For example in a web UI of pcs is a page with multiple clusters. > > > > > > > > > > We use cluster names and rules to apply the same exact CIB to > > > multiple > > > clusters, particularly when configuring geo clusters. > > > > I'm not sure to understand. Is it possible to have multiple Pacemaker > > daemon instances on the same serveurs? > > > > Or do you mean it is possible to have multiple namespace where > > resources are > > isolated in and one Pacemaker daemon to manage them? > > > > I am not sure what you mean by the second, but I am fairly sure I don't > mean either of those :) I'm talking about having multiple actual, > distinct clusters distinct cluster of Pacemaker/corosync daemons on the same servers or distinct cluster of servers? > and sharing the same configuration across all of > them, Same configuration like, the same file or the same content accross different files? Sorry for being bold...I just don't get it :/ ___ Manage your subscription: https://lists.clusterlabs.org/mailman/listinfo/users ClusterLabs home: https://www.clusterlabs.org/
Re: [ClusterLabs] Why do clusters have a name?
On Wed, 2019-03-27 at 10:13 +0100, Jehan-Guillaume de Rorthais wrote: > On Wed, 27 Mar 2019 09:59:16 +0100 > Kristoffer Grönlund wrote: > > > On Wed, 2019-03-27 at 08:27 +0100, Ivan Devát wrote: > > > On 26. 03. 19 21:12, Brian Reichert wrote: > > > > This will sound like a dumb question: > > > > > > > > The manpage for pcs(8) implies that to set up a cluster, one > > > > needs > > > > to provide a name. > > > > > > > > Why do clusters have names? > > > > > > > > Is there a use case wherein there would be multiple clusters > > > > visible > > > > in an administrative UI, such that they'd need to be > > > > differentiated? > > > > > > > > > > For example in a web UI of pcs is a page with multiple clusters. > > > > > > > We use cluster names and rules to apply the same exact CIB to > > multiple > > clusters, particularly when configuring geo clusters. > > I'm not sure to understand. Is it possible to have multiple Pacemaker > daemon instances on the same serveurs? > > Or do you mean it is possible to have multiple namespace where > resources are > isolated in and one Pacemaker daemon to manage them? > I am not sure what you mean by the second, but I am fairly sure I don't mean either of those :) I'm talking about having multiple actual, distinct clusters and sharing the same configuration across all of them, using rules to separate the cases where the configurations differ. Cheers, Kristoffer ___ Manage your subscription: https://lists.clusterlabs.org/mailman/listinfo/users ClusterLabs home: https://www.clusterlabs.org/
Re: [ClusterLabs] Why do clusters have a name?
On Wed, 27 Mar 2019 09:59:16 +0100 Kristoffer Grönlund wrote: > On Wed, 2019-03-27 at 08:27 +0100, Ivan Devát wrote: > > On 26. 03. 19 21:12, Brian Reichert wrote: > > > This will sound like a dumb question: > > > > > > The manpage for pcs(8) implies that to set up a cluster, one needs > > > to provide a name. > > > > > > Why do clusters have names? > > > > > > Is there a use case wherein there would be multiple clusters > > > visible > > > in an administrative UI, such that they'd need to be > > > differentiated? > > > > > > > For example in a web UI of pcs is a page with multiple clusters. > > > > We use cluster names and rules to apply the same exact CIB to multiple > clusters, particularly when configuring geo clusters. I'm not sure to understand. Is it possible to have multiple Pacemaker daemon instances on the same serveurs? Or do you mean it is possible to have multiple namespace where resources are isolated in and one Pacemaker daemon to manage them? ___ Manage your subscription: https://lists.clusterlabs.org/mailman/listinfo/users ClusterLabs home: https://www.clusterlabs.org/
Re: [ClusterLabs] Why do clusters have a name?
On Wed, 2019-03-27 at 08:27 +0100, Ivan Devát wrote: > On 26. 03. 19 21:12, Brian Reichert wrote: > > This will sound like a dumb question: > > > > The manpage for pcs(8) implies that to set up a cluster, one needs > > to provide a name. > > > > Why do clusters have names? > > > > Is there a use case wherein there would be multiple clusters > > visible > > in an administrative UI, such that they'd need to be > > differentiated? > > > > For example in a web UI of pcs is a page with multiple clusters. > We use cluster names and rules to apply the same exact CIB to multiple clusters, particularly when configuring geo clusters. Cheers, Kristoffer > Ivan > ___ > Manage your subscription: > https://lists.clusterlabs.org/mailman/listinfo/users > > ClusterLabs home: https://www.clusterlabs.org/ > ___ Manage your subscription: https://lists.clusterlabs.org/mailman/listinfo/users ClusterLabs home: https://www.clusterlabs.org/
Re: [ClusterLabs] Why do clusters have a name?
On 26. 03. 19 21:12, Brian Reichert wrote: This will sound like a dumb question: The manpage for pcs(8) implies that to set up a cluster, one needs to provide a name. Why do clusters have names? Is there a use case wherein there would be multiple clusters visible in an administrative UI, such that they'd need to be differentiated? For example in a web UI of pcs is a page with multiple clusters. Ivan ___ Manage your subscription: https://lists.clusterlabs.org/mailman/listinfo/users ClusterLabs home: https://www.clusterlabs.org/
Re: [ClusterLabs] Why do clusters have a name?
On 2019-03-26 4:12 p.m., Brian Reichert wrote: > This will sound like a dumb question: > > The manpage for pcs(8) implies that to set up a cluster, one needs > to provide a name. > > Why do clusters have names? > > Is there a use case wherein there would be multiple clusters visible > in an administrative UI, such that they'd need to be differentiated? It's possible, yes. In our case, we treat each pair of nodes as a single "logic unit", and expand by adding in new "pairs". Each pair is it's own cluster, managed centrally. -- Digimer Papers and Projects: https://alteeve.com/w/ "I am, somehow, less interested in the weight and convolutions of Einstein’s brain than in the near certainty that people of equal talent have lived and died in cotton fields and sweatshops." - Stephen Jay Gould ___ Manage your subscription: https://lists.clusterlabs.org/mailman/listinfo/users ClusterLabs home: https://www.clusterlabs.org/
[ClusterLabs] Why do clusters have a name?
This will sound like a dumb question: The manpage for pcs(8) implies that to set up a cluster, one needs to provide a name. Why do clusters have names? Is there a use case wherein there would be multiple clusters visible in an administrative UI, such that they'd need to be differentiated? -- Brian Reichert BSD admin/developer at large ___ Manage your subscription: https://lists.clusterlabs.org/mailman/listinfo/users ClusterLabs home: https://www.clusterlabs.org/
