HDFS-2917. HA: haadmin should not work if run by regular user. Contributed by Eli Collins

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-1623@1242626 13f79535-47bb-0310-9956-ffa450edef68

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ha/FailoverController.java

@@ -61,6 +61,7 @@ private static void preFailoverChecks(HAServiceProtocol toSvc,
                                         boolean forceActive)
       throws FailoverFailedException {
     HAServiceState toSvcState;
+
     try {
       toSvcState = toSvc.getServiceState();
     } catch (IOException e) {
@@ -68,10 +69,12 @@ private static void preFailoverChecks(HAServiceProtocol toSvc,
       LOG.error(msg, e);
       throw new FailoverFailedException(msg, e);
     }
+
     if (!toSvcState.equals(HAServiceState.STANDBY)) {
       throw new FailoverFailedException(
           "Can't failover to an active service");
     }
+
     try {
       HAServiceProtocolHelper.monitorHealth(toSvc);
     } catch (HealthCheckFailedException hce) {
@@ -81,6 +84,7 @@ private static void preFailoverChecks(HAServiceProtocol toSvc,
       throw new FailoverFailedException(
           "Got an IO exception", e);
     }
+
     try {
       if (!toSvc.readyToBecomeActive()) {
         if (!forceActive) {

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ha/HAAdmin.java

@@ -249,7 +249,10 @@ public int run(String[] argv) throws Exception {
     try {
       return runCmd(argv);
     } catch (IllegalArgumentException iae) {
-      errOut.println("Illegal argument: " + iae.getMessage());
+      errOut.println("Illegal argument: " + iae.getLocalizedMessage());
+      return -1;
+    } catch (IOException ioe) {
+      errOut.println("Operation failed: " + ioe.getLocalizedMessage());
       return -1;
     }
   }

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ha/HAServiceProtocol.java

@@ -21,6 +21,7 @@
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.fs.CommonConfigurationKeys;
 import org.apache.hadoop.ipc.VersionedProtocol;
+import org.apache.hadoop.security.AccessControlException;
 import org.apache.hadoop.security.KerberosInfo;
 
 import java.io.IOException;
@@ -75,10 +76,13 @@ public String toString() {
    * 
    * @throws HealthCheckFailedException
    *           if the health check of a service fails.
+   * @throws AccessControlException
+   *           if access is denied.
    * @throws IOException
    *           if other errors happen
    */
   public void monitorHealth() throws HealthCheckFailedException,
+                                     AccessControlException,
                                      IOException;
 
   /**
@@ -87,10 +91,13 @@ public void monitorHealth() throws HealthCheckFailedException,
    * 
    * @throws ServiceFailedException
    *           if transition from standby to active fails.
+   * @throws AccessControlException
+   *           if access is denied.
    * @throws IOException
    *           if other errors happen
    */
   public void transitionToActive() throws ServiceFailedException,
+                                          AccessControlException,
                                           IOException;
 
   /**
@@ -99,28 +106,37 @@ public void transitionToActive() throws ServiceFailedException,
    * 
    * @throws ServiceFailedException
    *           if transition from active to standby fails.
+   * @throws AccessControlException
+   *           if access is denied.
    * @throws IOException
    *           if other errors happen
    */
   public void transitionToStandby() throws ServiceFailedException,
+                                           AccessControlException,
                                            IOException;
 
   /**
    * Return the current state of the service.
    * 
+   * @throws AccessControlException
+   *           if access is denied.
    * @throws IOException
    *           if other errors happen
    */
-  public HAServiceState getServiceState() throws IOException;
+  public HAServiceState getServiceState() throws AccessControlException,
+                                                 IOException;
 
   /**
    * Return true if the service is capable and ready to transition
    * from the standby state to the active state.
    * 
    * @return true if the service is ready to become active, false otherwise.
+   * @throws AccessControlException
+   *           if access is denied.
    * @throws IOException
    *           if other errors happen
    */
   public boolean readyToBecomeActive() throws ServiceFailedException,
+                                              AccessControlException,
                                               IOException;
 }

hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/ha/TestFailoverController.java

@@ -32,6 +32,7 @@
 import org.apache.hadoop.ipc.ProtocolSignature;
 import org.apache.hadoop.ipc.RPC;
 import org.apache.hadoop.net.NetUtils;
+import org.apache.hadoop.security.AccessControlException;
 
 import org.junit.Test;
 import static org.junit.Assert.*;
@@ -133,6 +134,31 @@ public void testFailoverFromActiveToActive() throws Exception {
     assertEquals(HAServiceState.ACTIVE, svc2.getServiceState());
   }
 
+  @Test
+  public void testFailoverWithoutPermission() throws Exception {
+    DummyService svc1 = new DummyService(HAServiceState.ACTIVE) {
+      @Override
+      public HAServiceState getServiceState() throws IOException {
+        throw new AccessControlException("Access denied");
+      }
+    };
+    DummyService svc2 = new DummyService(HAServiceState.STANDBY) {
+      @Override
+      public HAServiceState getServiceState() throws IOException {
+        throw new AccessControlException("Access denied");
+      }
+    };
+    NodeFencer fencer = setupFencer(AlwaysSucceedFencer.class.getName());
+
+    try {
+      FailoverController.failover(svc1,  svc1Addr,  svc2,  svc2Addr, fencer, false, false);
+      fail("Can't failover when access is denied");
+    } catch (FailoverFailedException ffe) {
+      assertTrue(ffe.getCause().getMessage().contains("Access denied"));
+    }
+  }
+
+
   @Test
   public void testFailoverToUnreadyService() throws Exception {
     DummyService svc1 = new DummyService(HAServiceState.ACTIVE);

hadoop-hdfs-project/hadoop-hdfs/CHANGES.HDFS-1623.txt

@@ -194,3 +194,5 @@ HDFS-2915. HA: TestFailureOfSharedDir.testFailureOfSharedDir() has race conditio
 HDFS-2912. Namenode not shutting down when shared edits dir is inaccessible. (Bikas Saha via atm)
 
 HDFS-2922. HA: close out operation categories. (eli)
+
+HDFS-2917. HA: haadmin should not work if run by regular user (eli)

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NameNode.java

@@ -58,6 +58,7 @@
 import org.apache.hadoop.ipc.StandbyException;
 import org.apache.hadoop.metrics2.lib.DefaultMetricsSystem;
 import org.apache.hadoop.net.NetUtils;
+import org.apache.hadoop.security.AccessControlException;
 import org.apache.hadoop.security.RefreshUserMappingsProtocol;
 import org.apache.hadoop.security.SecurityUtil;
 import org.apache.hadoop.security.UserGroupInformation;
@@ -900,36 +901,45 @@ public static void main(String argv[]) throws Exception {
     }
   }
 
-  synchronized void monitorHealth() throws HealthCheckFailedException {
+  synchronized void monitorHealth() 
+      throws HealthCheckFailedException, AccessControlException {
+    namesystem.checkSuperuserPrivilege();
     if (!haEnabled) {
-      return; // no-op, if HA is not eanbled
+      return; // no-op, if HA is not enabled
     }
     // TODO:HA implement health check
     return;
   }
   
-  synchronized void transitionToActive() throws ServiceFailedException {
+  synchronized void transitionToActive() 
+      throws ServiceFailedException, AccessControlException {
+    namesystem.checkSuperuserPrivilege();
     if (!haEnabled) {
       throw new ServiceFailedException("HA for namenode is not enabled");
     }
     state.setState(haContext, ACTIVE_STATE);
   }
   
-  synchronized void transitionToStandby() throws ServiceFailedException {
+  synchronized void transitionToStandby() 
+      throws ServiceFailedException, AccessControlException {
+    namesystem.checkSuperuserPrivilege();
     if (!haEnabled) {
       throw new ServiceFailedException("HA for namenode is not enabled");
     }
     state.setState(haContext, STANDBY_STATE);
   }
 
-  synchronized HAServiceState getServiceState() {
+  synchronized HAServiceState getServiceState() throws AccessControlException {
+    namesystem.checkSuperuserPrivilege();
     if (state == null) {
       return HAServiceState.INITIALIZING;
     }
     return state.getServiceState();
   }
 
-  synchronized boolean readyToBecomeActive() throws ServiceFailedException {
+  synchronized boolean readyToBecomeActive()
+      throws ServiceFailedException, AccessControlException {
+    namesystem.checkSuperuserPrivilege();
     if (!haEnabled) {
       throw new ServiceFailedException("HA for namenode is not enabled");
     }

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NameNodeRpcServer.java

@@ -988,27 +988,32 @@ public String[] getGroupsForUser(String user) throws IOException {
   }
 
   @Override // HAServiceProtocol
-  public synchronized void monitorHealth() throws HealthCheckFailedException {
+  public synchronized void monitorHealth() 
+      throws HealthCheckFailedException, AccessControlException {
     nn.monitorHealth();
   }
   
   @Override // HAServiceProtocol
-  public synchronized void transitionToActive() throws ServiceFailedException {
+  public synchronized void transitionToActive() 
+      throws ServiceFailedException, AccessControlException {
     nn.transitionToActive();
   }
   
   @Override // HAServiceProtocol
-  public synchronized void transitionToStandby() throws ServiceFailedException {
+  public synchronized void transitionToStandby() 
+      throws ServiceFailedException, AccessControlException {
     nn.transitionToStandby();
   }
 
   @Override // HAServiceProtocol
-  public synchronized HAServiceState getServiceState() {
+  public synchronized HAServiceState getServiceState() 
+      throws AccessControlException {
     return nn.getServiceState();
   }
 
   @Override // HAServiceProtocol
-  public synchronized boolean readyToBecomeActive() throws ServiceFailedException {
+  public synchronized boolean readyToBecomeActive() 
+      throws ServiceFailedException, AccessControlException {
     return nn.readyToBecomeActive();
   }