I got the same error when trying to configure jbpm to use DB authentication:
Exception encountered while syncing with controller at http://localhost:8080/business-central/rest/controller/server/sample-server error Error while sending PUT request to http://.... response code 405
The jbpm version that i'm using is: jbpm-server-7.47.0.Final-dist.zip (released at Dec 4, 2020)
In the DB, i have already setup user "admin" with password "admin" that contains the "kie-server" role.
And in the standalone.xml, i also added following system properties to define the user name and password to connect to the kie server and controller:
<property name="org.kie.server.user" value="admin"/>
<property name="org.kie.server.pwd" value="admin"/>
<property name="org.kie.server.controller.user" value="admin"/>
<property name="org.kie.server.controller.pwd" value="admin"/>
Even though startup the server with the mentioned error, the kie server can startup successfully. I tried to use the 'admin' user to access the kie-server REST API (e.g. GET http://localhost:8080/kie-server/services/rest/server) without any problem. I also tried to login to the business central with the 'admin' user and also successful.
But the problem still remain the same that there is no server available for kjar deployment.
Resolution
It took me several days to figure out that its the configuration issue in the standalone.xml file.
In the standalone.xml, there are by default provided a set of system properties with name is "kie.keystore.key.*". These attributes are used to retrieve the password value from the a keystore file (e.g. jBPMKeystore.jceks in the configuration folder). By checking the source code of DefaultRestControllerImpl.java, the logic is to first load the password from the keystore file and if there is problem, it will then retrieve the password from the system property: org.kie.server.controller.pwd
So, what we need to do is to comment out / remove the system properties "kie.keystore.*" inside the <system-properties> tag:
<!--
<property name="kie.keystore.keyStoreURL" value="file:///${jboss.server.config.dir}/jBPMKeystore.jceks"/>
<property name="kie.keystore.keyStorePwd" value="jBPMKeyStorePassword"/>
<property name="kie.keystore.key.server.alias" value="jBPMAlias"/>
<property name="kie.keystore.key.server.pwd" value="jBPMKeyPassword"/>
<property name="kie.keystore.key.ctrl.alias" value="jBPMAlias"/>
<property name="kie.keystore.key.ctrl.pwd" value="jBPMKeyPassword"/>
-->
