title: 503 ERROR when starting web app at OPENSHIFT
body: <p>I'm trying to deploy Spring MVC app at OpenShift from Eclipse. All is pushing to OpenShift repository successfully. But when i'm opening my web-site it gives me 503 ERROR. I'm using Spring MVC, Hibernate. 
  Help pls!
  <a href="https://i.stack.imgur.com/YEOM4.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/YEOM4.png" alt="enter image description here"></a></p>
  
  <p><strong>My log file</strong></p>
  
  <pre><code>    Jan 30, 2016 1:23:09 PM org.apache.catalina.startup.Catalina addClusterRuleSet
  INFO: Cluster RuleSet not found due to [java.lang.ClassNotFoundException: org.apache.catalina.ha.ClusterRuleSet]. Cluster configuration disabled.
  Jan 30, 2016 1:23:09 PM org.apache.catalina.startup.Catalina addClusterRuleSet
  INFO: Cluster RuleSet not found due to [java.lang.ClassNotFoundException: org.apache.catalina.ha.ClusterRuleSet]. Cluster configuration disabled.
  Jan 30, 2016 1:23:10 PM org.apache.catalina.core.AprLifecycleListener init
  INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.p$
  Jan 30, 2016 1:23:10 PM org.apache.coyote.AbstractProtocol init
  INFO: Initializing ProtocolHandler ["http-bio-127.3.60.1-8080"]
  Jan 30, 2016 1:23:10 PM org.apache.catalina.startup.Catalina load
  INFO: Initialization processed in 1499 ms
  Jan 30, 2016 1:23:11 PM org.apache.catalina.core.StandardService startInternal
  INFO: Starting service Catalina
  Jan 30, 2016 1:23:11 PM org.apache.catalina.core.StandardEngine startInternal
  INFO: Starting Servlet Engine: Apache Tomcat/7.0.54
  Jan 30, 2016 1:23:11 PM org.apache.catalina.startup.HostConfig deployWAR
  INFO: Deploying web application archive /var/lib/openshift/56acfef17628e1c82e00007c/app-root/runtime/dependencies/jbossews/webapps/ROOT.war
  Jan 30, 2016 1:23:14 PM org.apache.catalina.util.SessionIdGenerator createSecureRandom
  INFO: Creation of SecureRandom instance for session ID generation using [SHA1PRNG] took [105] milliseconds.
  Jan 30, 2016 1:23:14 PM org.apache.catalina.startup.HostConfig deployWAR
  INFO: Deployment of web application archive /var/lib/openshift/56acfef17628e1c82e00007c/app-root/runtime/dependencies/jbossews/webapps/ROOT.war $
  Jan 30, 2016 1:23:14 PM org.apache.coyote.AbstractProtocol start
  INFO: Starting ProtocolHandler ["http-bio-127.3.60.1-8080"]
  Jan 30, 2016 1:23:14 PM org.apache.catalina.startup.Catalina start
  INFO: Server startup in 3612 ms
  Jan 30, 2016 1:27:04 PM org.apache.coyote.AbstractProtocol pause
  INFO: Pausing ProtocolHandler ["http-bio-127.3.60.1-8080"]
  Jan 30, 2016 1:27:04 PM org.apache.catalina.core.StandardService stopInternal
  INFO: Stopping service Catalina
  Jan 30, 2016 1:27:04 PM org.apache.coyote.AbstractProtocol stop
  INFO: Stopping ProtocolHandler ["http-bio-127.3.60.1-8080"]
  Jan 30, 2016 1:27:04 PM org.apache.coyote.AbstractProtocol destroy
  INFO: Destroying ProtocolHandler ["http-bio-127.3.60.1-8080"]
  Jan 30, 2016 1:58:25 PM org.apache.catalina.startup.Catalina addClusterRuleSet
  INFO: Cluster RuleSet not found due to [java.lang.ClassNotFoundException: org.apache.catalina.ha.ClusterRuleSet]. Cluster configuration disabled.
  Jan 30, 2016 1:58:26 PM org.apache.catalina.startup.Catalina addClusterRuleSet
  INFO: Cluster RuleSet not found due to [java.lang.ClassNotFoundException: org.apache.catalina.ha.ClusterRuleSet]. Cluster configuration disabled.
  </code></pre>