HADOOP-14212. Addendum patch: Expose SecurityEnabled boolean field in JMX for other services besides NameNode. Contributed by Adam Antal.

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/NodeManagerMXBean.java

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+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.hadoop.yarn.server.nodemanager;
+
+import org.apache.hadoop.classification.InterfaceAudience;
+import org.apache.hadoop.classification.InterfaceStability;
+
+/**
+ * This is the JMX management interface for NodeManager.
+ * End users shouldn't be implementing these interfaces, and instead
+ * access this information through the JMX APIs.
+ */
+@InterfaceAudience.Private
+@InterfaceStability.Evolving
+public interface NodeManagerMXBean {
+  /**
+   * Gets if security is enabled.
+   *
+   * @return true, if security is enabled.
+   * */
+  boolean isSecurityEnabled();
+}

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/java/org/apache/hadoop/yarn/server/nodemanager/TestNodeManagerMXBean.java

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+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.hadoop.yarn.server.nodemanager;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.security.UserGroupInformation;
+import org.apache.hadoop.yarn.conf.YarnConfiguration;
+import org.junit.Assert;
+import org.junit.Test;
+import javax.management.MBeanServer;
+import javax.management.ObjectName;
+import java.lang.management.ManagementFactory;
+
+/**
+ * Class for testing {@link NodeManagerMXBean} implementation.
+ */
+public class TestNodeManagerMXBean {
+  public static final Log LOG = LogFactory.getLog(
+          TestNodeManagerMXBean.class);
+
+  @Test
+  public void testNodeManagerMXBean() throws Exception {
+    try (NodeManager nodeManager = new NodeManager()) {
+      Configuration conf = new YarnConfiguration();
+      UserGroupInformation.setConfiguration(conf);
+      nodeManager.init(conf);
+
+      MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
+      ObjectName mxbeanName = new ObjectName(
+              "Hadoop:service=NodeManager,name=NodeManager");
+
+      // Get attribute "SecurityEnabled"
+      boolean securityEnabled = (boolean) mbs.getAttribute(mxbeanName,
+              "SecurityEnabled");
+      Assert.assertEquals(nodeManager.isSecurityEnabled(), securityEnabled);
+    }
+  }
+}

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/ResourceManagerMXBean.java

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+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.hadoop.yarn.server.resourcemanager;
+
+import org.apache.hadoop.classification.InterfaceAudience;
+import org.apache.hadoop.classification.InterfaceStability;
+
+/**
+ * This is the JMX management interface for ResourceManager.
+ * End users shouldn't be implementing these interfaces, and instead
+ * access this information through the JMX APIs.
+ */
+@InterfaceAudience.Private
+@InterfaceStability.Evolving
+public interface ResourceManagerMXBean {
+  /**
+   * Gets if security is enabled.
+   *
+   * @return true, if security is enabled.
+   * */
+  boolean isSecurityEnabled();
+}

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/TestResourceManagerMXBean.java

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+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.hadoop.yarn.server.resourcemanager;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.security.UserGroupInformation;
+import org.apache.hadoop.yarn.conf.YarnConfiguration;
+import org.junit.Assert;
+import org.junit.Test;
+
+import javax.management.MBeanServer;
+import javax.management.ObjectName;
+import java.lang.management.ManagementFactory;
+
+/**
+ * Class for testing {@link ResourceManagerMXBean} implementation.
+ */
+public class TestResourceManagerMXBean {
+  public static final Log LOG = LogFactory.getLog(
+          TestResourceManagerMXBean.class);
+
+  @Test
+  public void testResourceManagerMXBean() throws Exception {
+    try (ResourceManager resourceManager = new ResourceManager()) {
+      Configuration conf = new YarnConfiguration();
+      UserGroupInformation.setConfiguration(conf);
+      resourceManager.init(conf);
+
+      MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
+      ObjectName mxbeanName = new ObjectName(
+              "Hadoop:service=ResourceManager,name=ResourceManager");
+
+      // Get attribute "SecurityEnabled"
+      boolean securityEnabled = (boolean) mbs.getAttribute(mxbeanName,
+              "SecurityEnabled");
+      Assert.assertEquals(resourceManager.isSecurityEnabled(), securityEnabled);
+    }
+  }
+}