Why is JBoss EAP throwing a java.lang.SecurityException: JBAS013322: Vault is not initialized error?

Issue

• Why is JBoss EAP 6 throwing a java.lang.SecurityException: JBAS013322: Vault is not initialized error?

[Server:server-two] 15:47:08,881 INFO  [org.infinispan.configuration.cache.EvictionConfigurationBuilder] (ServerService Thread Pool -- 56) ISPN000152: Passivation configured without an eviction policy being selected. Only manually evicted entities will be pasivated.
[Server:server-one] 15:47:08,963 ERROR [org.jboss.as.controller.management-operation] (ServerService Thread Pool -- 55) JBAS014612: Operation ("enable") failed - address: ([
[Server:server-one]     ("subsystem" => "datasources"),
[Server:server-one]     ("data-source" => "MySqlDS")
[Server:server-one] ]): java.lang.SecurityException: JBAS013322: Vault is not initialized
[Server:server-one]     at org.jboss.as.security.vault.RuntimeVaultReader.retrieveFromVault(RuntimeVaultReader.java:98)
[Server:server-one]     at org.jboss.as.server.RuntimeExpressionResolver.resolvePluggableExpression(RuntimeExpressionResolver.java:45)
[Server:server-one]     at org.jboss.as.controller.ExpressionResolverImpl.resolveExpressionsRecursively(ExpressionResolverImpl.java:58) [jboss-as-controller-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
[Server:server-one]     at org.jboss.as.controller.ExpressionResolverImpl.resolveExpressions(ExpressionResolverImpl.java:40) [jboss-as-controller-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
[Server:server-one]     at org.jboss.as.controller.ModelControllerImpl.resolveExpressions(ModelControllerImpl.java:455) [jboss-as-controller-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
[Server:server-one]     at org.jboss.as.controller.OperationContextImpl.resolveExpressions(OperationContextImpl.java:689) [jboss-as-controller-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
[Server:server-one]     at org.jboss.as.controller.ParallelBootOperationContext.resolveExpressions(ParallelBootOperationContext.java:283) [jboss-as-controller-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
[Server:server-one]     at org.jboss.as.connector.subsystems.datasources.DataSourceModelNodeUtil.getResolvedStringIfSetOrGetDefault(DataSourceModelNodeUtil.java:338)
[Server:server-one]     at org.jboss.as.connector.subsystems.datasources.DataSourceModelNodeUtil.from(DataSourceModelNodeUtil.java:151)
[Server:server-one]     at org.jboss.as.connector.subsystems.datasources.DataSourceEnable.addServices(DataSourceEnable.java:152)

• In the host.xml configuration, the following vault data has been configured:

 `"/host=master/core-service=vault:add(vault-options={"KEYSTORE_URL" => "/opt/vault/vault.keystore","KEYSTORE_PASSWORD" => "MASK-3y28rCZlcKR","KEYSTORE_ALIAS" => "vault","SALT" => "12438567","ITERATION_COUNT" => "50","ENC_FILE_DIR" => "/opt/vault/"}"` 

However, the Vault is not initialized issue as seen in following error is received, when trying to start a JBoss domain instance in production environment.

java.lang.SecurityException: JBAS013322: Vault is not initialized

• The issue java.lang.SecurityException: JBAS013322: Vault is not initialized when using vault with the following configuration for datasource:

        <security>
          <user-name>databaseuser</user-name>
            <password>{VAULT::ds_ExampleDS::password_name::1}</password>
        </security>

• JBoss EAP 7 fails with below error message :

java.lang.SecurityException: WFLYSRV0230: Vault is not initialized