02-27-2019
Be warned that bumping posts are against the rules on this forum and moderators might sanction you for it.
Which load balancer (LB) are you using??
However, I would be likely to compare the 4 configurations (conf/server.xml) to explore any differences seen. TomEE still uses normal Tomcat Clustering and that needs checking out.
I would be inclined to guess that the LB is not overloading node1, on the contrary, the LB is continuing to send requests to node1 after that node has failed (for some reason). There is a fault (hardware, software or configuration) with node1.
The two minute delay you see to load the page is, in fact, the timeout before the request is successfully delivered to a surviving node. If everything is configured properly, it shouldn't take this long. Furthermore, once the failed node is kicked out of the cluster (until you issue the command for it to rejoin), the LB should know that node1 is dead and no longer send requests to it. You then run on three nodes after failover and all is fine and dandy.
So your problem is that failover is not occurring in an orderly fashion. I would confirm whether node1 is actually joining the cluster at all or you have a cluster of three plus a stand-alone node.
The way it should work is that the four cluster members should know immediately if one of them fails. The failed node gets kicked out. The surviving nodes relay this state to the LB which no longer sends requests to the failed node.
Which LB are you using??
Ref:
Apache TomEE
How to Setup Load Balancing in Tomcat/TomEE with mod_proxy_balancer - Simples Assim
Tomcat Clustering - A Step By Step Guide | MuleSoft
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LEARN ABOUT SUSE
crm_failcount
CRM_FAILCOUNT(8) [FIXME: manual] CRM_FAILCOUNT(8)
NAME
crm_failcount - manipulate the failcount attribute on a given resource
SYNOPSIS
crm_failcount [-?|-V] -D -u|-U node -r resource
crm_failcount [-?|-V] -G -u|-U node -r resource
crm_failcount [-?|-V] -v string -u|-U node -r resource
DESCRIPTION
Heartbeat implements a sophisticated method to compute and force failover of a resource to another node in case that resource tends to fail
on the current node. A resource carries a resource_stickiness attribute to determine how much it prefers to run on a certain node. It also
carries a resource_failure_stickiness that determines the threshold at which the resource should failover to another node.
The failcount attribute is added to the resource and increased on resource monitoring failure. The value of failcount multiplied by the
value of resource_failure_stickiness determines the failover score of this resource. If this number exceeds the preference set for this
resource, the resource is moved to another node and not run again on the original node until the failure count is reset.
The crm_failcount command queries the number of failures per resource on a given node. This tool can also be used to reset the failcount,
allowing the resource to run again on nodes where it had failed too often.
OPTIONS
--help, -?
Print a help message.
--verbose, -V
Turn on debug information.
Note
Increase the level of verbosity by providing additional instances.
--quiet, -Q
When doing an attribute query using -G, print just the value to stdout. Use this option with -G.
--get-value, -G
Retrieve rather than set the preference.
--delete-attr, -D
Specify the attribute to delete.
--attr-value string, -v string
Specify the value to use. This option is ignored when used with -G.
--node-uuid node_uuid, -u node_uuid
Specify the UUID of the node to change.
--node-uname node_uname, -U node_uname
Specify the uname of the node to change.
--resource-id resource name, -r resource name
Specify the name of the resource on which to operate.
EXAMPLES
Reset the failcount for the resource myrsc on the node node1:
crm_failcount -D -U node1 -r my_rsc
Query the current failcount for the resource myrsc on the node node1:
crm_failcount -G -U node1 -r my_rsc
FILES
/var/lib/heartbeat/crm/cib.xml--the CIB (minus status section) on disk. Editing this file directly is strongly discouraged.
SEE ALSO
???, ???, and the Linux High Availability FAQ Web site[1]
AUTHOR
crm_failcount was written by Andrew Beekhof.
NOTES
1. Linux High Availability FAQ Web site
http://www.linux-ha.org/v2/faq/forced_failover
[FIXME: source] 07/05/2010 CRM_FAILCOUNT(8)