Production slave host won't start

Issue

Production slave host won't start due to the following exceptions,

18:02:57,170 INFO  [org.jboss.modules] (main) JBoss Modules version 1.3.5.Final-redhat-1
18:02:57,368 INFO  [org.jboss.msc] (main) JBoss MSC version 1.1.5.Final-redhat-1
18:02:57,467 INFO  [org.jboss.as] (MSC service thread 1-6) JBAS015899: JBoss EAP 6.3.3.GA (AS 7.4.3.Final-redhat-2) starting
18:02:58,685 INFO  [org.jboss.security] (Controller Boot Thread) PBOX000361: Default Security Vault Implementation Initialized and Ready
18:02:58,713 INFO  [org.xnio] (MSC service thread 1-6) XNIO Version 3.0.11.GA-redhat-2
18:02:58,719 INFO  [org.xnio.nio] (MSC service thread 1-6) XNIO NIO Implementation Version 3.0.11.GA-redhat-2
18:02:58,724 INFO  [org.jboss.as] (Controller Boot Thread) JBAS010902: Creating http management service using network interface (management) port (10390) securePort (-1)
18:02:58,750 INFO  [org.jboss.remoting] (MSC service thread 1-6) JBoss Remoting version 3.3.4.Final-redhat-1
18:02:58,797 INFO  [org.jboss.as.remoting] (MSC service thread 1-8) JBAS017100: Listening on 0.0.0.0:10399
18:02:59,125 WARN  [org.jboss.as.host.controller] (Controller Boot Thread) JBAS010900: Could not connect to remote domain controller at remote://xxx.xxxx.com:10399 -- java.lang.IllegalStateException: JBAS010942: Unable to connect due to authentication failure.
18:02:59,126 WARN  [org.jboss.as.host.controller] (Controller Boot Thread) JBAS016581: No domain controller discovery options remain.
18:02:59,126 ERROR [org.jboss.as.host.controller] (Controller Boot Thread) JBAS010901: Could not connect to master. Aborting. Error was: java.lang.IllegalStateException: JBAS016519: Tried all domain controller discovery option(s) but unable to connect
18:02:59,147 INFO  [org.jboss.as] (MSC service thread 1-7) JBAS015950: JBoss EAP 6.3.3.GA (AS 7.4.3.Final-redhat-2) stopped in 15ms