On 22/04/2015 19:03, Anubhav Sharma wrote:
Hi Guys,
We have the following deployment for Syncope:
Tomcat1 – Syncope1 – SinglePostgresDB
tomcat2 – Syncope2 - SinglePostgresDB
Both these tomcats are not in cluster. Syncope1 and Syncope1 are independent
instances and not in cluster as well. Both these Syncope instances use a common
single PostgresDB. Both the tomcats are behind a LoadBalancer and the
application requests ELB for accessing Syncope so that load is randomly
distributed.
With this deployment sometimes our application works!! But sometimes when the
application tries to delete a user or change password, one of the Syncope
throws an error:
09:58:21.999 DEBUG org.apache.syncope.core.rest.controller.ControllerHandler -
Unresolved bean reference ...
09:58:22.156 DEBUG org.apache.syncope.core.rest.controller.ControllerHandler -
After throwing UserController.search
09:58:22.158 ERROR
org.apache.syncope.core.rest.utils.RestServiceExceptionMapper - Exception
thrown by REST method: null
java.lang.NullPointerException
09:59:21.564 DEBUG org.apache.syncope.core.rest.controller.ControllerHandler -
Before
UserController.search([org.apache.syncope.core.persistence.dao.search.SearchCond@35f75285[
type=LEAF
subjectCond=<null>
attributeCond=org.apache.syncope.core.persistence.dao.search.AttributeCond@4ab571[
type=EQ
schema=accountName
expression=testAccount
]
And additionally we have warnings in the logs:
"message": "410373728 syncopePersistenceUnit WARN [http-bio-8080-exec-2529] openjpa.Runtime - Detected possible
orphaned reference to deleted object \"[9899]\" in
\"org.apache.syncope.core.persistence.beans.user.UAttr.values<element:class
org.apache.syncope.core.persistence.beans.user.UAttrValue>\" of instance \"10764\".”,
After these errors, this Syncope instance always results error and if I try to
login to Syncope-Console UI, I cannot connect to the Users tab….it results into
error “Error in core”
Question is, is it a valid deployment scenario?? Is Syncope expected to work in
such a deployment? Or we need to setup tomcat/Syncope in cluster and only then
it is expected to work??
Can someone please provide hints!!!
Hi,
you are missing an important piece of configuration, e.g. to let the two
OpenJPA instances (embedded in the two Syncope instances) synchronize
their respective data cache.
I have added some more information about this, including configuration
options, in the dedicated wiki page at
https://cwiki.apache.org/confluence/display/SYNCOPE/Setup+a+Syncope+cluster
HTH
Regards.
--
Francesco Chicchiriccò
Tirasa - Open Source Excellence
http://www.tirasa.net/
Involved at The Apache Software Foundation:
member, Syncope PMC chair, Cocoon PMC, Olingo PMC
http://people.apache.org/~ilgrosso/
