i following bellow steps to setup sso: Install Knox. Configure Ambari Authentication for LDAP/AD. Configure an LDAP/AD Identity Provider (IdP). Enable Knox SSO using the Ambari CLI. after this step sso worked me for redirect to ambari ui. in the next step when i add the bellow property to core-site.xml, restarting hdfs failed: "hadoop.http.authentication.type": "org.apache.hadoop.security.authentication.server.JWTRedirectAuthenticationHandler” "hadoop.http.authentication.public.key.pem": “$SSOPUBLICKEY" "hadoop.http.authentication.authentication.provider.url": "$SSOPROVIDERURL" when add this property ( hadoop.http.authentication.type ) to hdfs happening error. hdfs log file: 2019-02-26 16:28:06,366 ERROR datanode.DataNode (DataNode.java:secureMain(2870)) - Exception in secureMain java.io.IOException: Problem starting http server  Caused by:         at org.apache.hadoop.http.HttpServer2.start(HttpServer2.java:1165)         at org.apache.hadoop.hdfs.server.datanode.web.DatanodeHttpServer.<init>(DatanodeHttpServer.java:141)         at org.apache.hadoop.hdfs.server.datanode.DataNode.startInfoServer(DataNode.java:954)         at org.apache.hadoop.hdfs.server.datanode.DataNode.startDataNode(DataNode.java:1404)         at org.apache.hadoop.hdfs.server.datanode.DataNode.<init>(DataNode.java:497)         at org.apache.hadoop.hdfs.server.datanode.DataNode.makeInstance(DataNode.java:2769)         at org.apache.hadoop.hdfs.server.datanode.DataNode.instantiateDataNode(DataNode.java:2677)         at org.apache.hadoop.hdfs.server.datanode.DataNode.createDataNode(DataNode.java:2719)         at org.apache.hadoop.hdfs.server.datanode.DataNode.secureMain(DataNode.java:2863)         at org.apache.hadoop.hdfs.server.datanode.DataNode.main(DataNode.java:2887) javax.servlet.ServletException: javax.servlet.ServletException: Keytab does not exist: /home/hdfs/hadoop.keytab           at org.apache.hadoop.http.HttpServer2.start(HttpServer2.java:1165)         at org.apache.hadoop.hdfs.server.datanode.web.DatanodeHttpServer.<init>(DatanodeHttpServer.java:141)         at org.apache.hadoop.hdfs.server.datanode.DataNode.startInfoServer(DataNode.java:954)         at org.apache.hadoop.hdfs.server.datanode.DataNode.startDataNode(DataNode.java:1404)         at org.apache.hadoop.hdfs.server.datanode.DataNode.<init>(DataNode.java:497)         at org.apache.hadoop.hdfs.server.datanode.DataNode.makeInstance(DataNode.java:2769)         at org.apache.hadoop.hdfs.server.datanode.DataNode.instantiateDataNode(DataNode.java:2677)         at org.apache.hadoop.hdfs.server.datanode.DataNode.createDataNode(DataNode.java:2719)         at org.apache.hadoop.hdfs.server.datanode.DataNode.secureMain(DataNode.java:2863)         at org.apache.hadoop.hdfs.server.datanode.DataNode.main(DataNode.java:2887) how can resolve this issue? ... View more

i want change the following property in cluster-env.xml: <property> <name>recovery_enabled</name> <value>true</value> <description>Auto start enabled or not for this cluster.</description> <on-ambari-upgrade add="true"/> </property> <property> <name>recovery_type</name> <value>FULL</value> <description>Auto start type.</description> <on-ambari-upgrade add="true"/> </property> <property> <name>recovery_lifetime_max_count</name> <value>1024</value> <description>Auto start lifetime maximum count of recovery attempt allowed per host component. This is reset when agent is restarted.</de$ <on-ambari-upgrade add="true"/> </property> <property> <name>recovery_max_count</name> <value>1</value> <description>Auto start maximum count of recovery attempt allowed per host component in a window. This is reset when agent is restarted.<$ <on-ambari-upgrade add="true"/> </property> <property> . . after change property do not any effect in Blueprints and if we see the value of property is different: is way to change this property in blueprints ? ... View more