[ClusterLabs] Why my node1 couldn't back to the clustering chain?

[Jason Long]

Why, when node1 is back, then web server still on node2? Why not switched?






On Thursday, April 8, 2021, 06:49:38 PM GMT+4:30, Ken Gaillot <kgaillot at redhat.com> wrote: 





On Thu, 2021-04-08 at 14:14 +0000, Jason Long wrote:

> Hello,
> I stopped node1 manually as below:
> 
> [root at node1 ~]# pcs cluster stop node1
> node1: Stopping Cluster (pacemaker)...
> node1: Stopping Cluster (corosync)...
> [root at node1 ~]#
> [root at 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 at node1 ~]# pcs cluster start node1
> node1: Starting Cluster...
> [root at 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 <kgaillot at redhat.com>

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