On Thu, 2021-04-08 at 14:32 +0000, Jason Long wrote: > Why, when node1 is back, then web server still on node2? Why not > switched?
By default, there are no preferences as to where a resource should run. The cluster is free to move or leave resources as needed. If you want a resource to prefer a particular node, you can use location constraints to express that. However there is rarely a need to do so; in most clusters, nodes are equally interchangeable. > > On Thursday, April 8, 2021, 06:49:38 PM GMT+4:30, Ken Gaillot < > kgail...@redhat.com> wrote: > > > > > > On Thu, 2021-04-08 at 14:14 +0000, Jason Long wrote: > > > Hello, > > I stopped node1 manually as below: > > > > [root@node1 ~]# pcs cluster stop node1 > > node1: Stopping Cluster (pacemaker)... > > node1: Stopping Cluster (corosync)... > > [root@node1 ~]# > > [root@node1 ~]# pcs status > > Error: error running crm_mon, is pacemaker running? > > Could not connect to the CIB: Transport endpoint is not connected > > crm_mon: Error: cluster is not available on this node > > > > And after it, I checked my cluster logs: > > https://paste.ubuntu.com/p/9KNyt5nB79/ > > Then, I started node1: > > > > [root@node1 ~]# pcs cluster start node1 > > node1: Starting Cluster... > > [root@node1 ~]# > > > > And checked my cluster logs again: > > https://paste.ubuntu.com/p/GQFbdhMvV3/ > > The status of my cluster is: > > > > # pcs status > > Cluster name: mycluster > > Cluster Summary: > > * Stack: corosync > > * Current DC: node2 (version 2.0.5-10.fc33-ba59be7122) - > > partition > > with quorum > > * Last updated: Thu Apr 8 18:33:49 2021 > > * Last change: Thu Apr 8 17:18:49 2021 by root via cibadmin on > > node1 > > * 2 nodes configured > > * 3 resource instances configured > > > > > > Node List: > > * Online: [ node1 node2 ] > > > > > > Full List of Resources: > > * Resource Group: apache: > > * httpd_fs (ocf::heartbeat:Filesystem): Started node2 > > * httpd_vip (ocf::heartbeat:IPaddr2): Started node2 > > * httpd_ser (ocf::heartbeat:apache): Started node2 > > > > > > Daemon Status: > > corosync: active/enabled > > pacemaker: active/enabled > > pcsd: active/enabled > > > > But, I can't browse the Apache web server? Why? > > > > Thanks. > > > Based on the above status output, the web server is running on node2, > using the IP address specified by the httpd_vip resource. Are you > trying to contact the web server at a name corresponding to that IP? -- Ken Gaillot <kgail...@redhat.com> _______________________________________________ Manage your subscription: https://lists.clusterlabs.org/mailman/listinfo/users ClusterLabs home: https://www.clusterlabs.org/
