Github user mxm commented on a diff in the pull request: https://github.com/apache/flink/pull/2275#discussion_r79355653 --- Diff: flink-yarn/src/main/java/org/apache/flink/yarn/YarnTaskManagerRunner.java --- @@ -75,34 +85,66 @@ public static void runYarnTaskManager(String[] args, final Class<? extends YarnT "specified in the Flink config: " + flinkTempDirs); } - LOG.info("YARN daemon runs as '" + UserGroupInformation.getCurrentUser().getShortUserName() + - "' setting user to execute Flink TaskManager to '" + yarnClientUsername + "'"); - // tell akka to die in case of an error configuration.setBoolean(ConfigConstants.AKKA_JVM_EXIT_ON_FATAL_ERROR, true); - UserGroupInformation ugi = UserGroupInformation.createRemoteUser(yarnClientUsername); - for (Token<? extends TokenIdentifier> toks : UserGroupInformation.getCurrentUser().getTokens()) { - ugi.addToken(toks); + String keytabPath = null; + if(remoteKeytabPath != null) { + File f = new File(currDir, Utils.KEYTAB_FILE_NAME); + keytabPath = f.getAbsolutePath(); + LOG.info("keytabPath: {}", keytabPath); } + UserGroupInformation currentUser = UserGroupInformation.getCurrentUser(); + + LOG.info("YARN daemon is running as: {} Yarn client user obtainer: {}", + currentUser.getShortUserName(), yarnClientUsername ); + // Infer the resource identifier from the environment variable String containerID = Preconditions.checkNotNull(envs.get(YarnFlinkResourceManager.ENV_FLINK_CONTAINER_ID)); final ResourceID resourceId = new ResourceID(containerID); LOG.info("ResourceID assigned for this container: {}", resourceId); - ugi.doAs(new PrivilegedAction<Object>() { - @Override - public Object run() { - try { - TaskManager.selectNetworkInterfaceAndRunTaskManager(configuration, resourceId, taskManager); - } - catch (Throwable t) { - LOG.error("Error while starting the TaskManager", t); - System.exit(TaskManager.STARTUP_FAILURE_RETURN_CODE()); - } - return null; + try { + + SecurityContext.SecurityConfiguration sc = new SecurityContext.SecurityConfiguration(); + + //To support Yarn Secure Integration Test Scenario + File krb5Conf = new File(currDir, Utils.KRB5_FILE_NAME); + if(krb5Conf.exists() && krb5Conf.canRead()) { + String krb5Path = krb5Conf.getAbsolutePath(); + LOG.info("KRB5 Conf: {}", krb5Path); + org.apache.hadoop.conf.Configuration conf = new org.apache.hadoop.conf.Configuration(); + conf.set(CommonConfigurationKeysPublic.HADOOP_SECURITY_AUTHENTICATION, "kerberos"); + conf.set(CommonConfigurationKeysPublic.HADOOP_SECURITY_AUTHORIZATION, "true"); + sc.setHadoopConfiguration(conf); + } + + if(keytabPath != null && remoteKeytabPrincipal != null) { + configuration.setString(ConfigConstants.SECURITY_KEYTAB_KEY, keytabPath); + configuration.setString(ConfigConstants.SECURITY_PRINCIPAL_KEY, remoteKeytabPrincipal); } - }); + configuration.setString(ConfigConstants.FLINK_BASE_DIR_PATH_KEY, currDir); + + SecurityContext.install(sc.setFlinkConfiguration(configuration)); + + SecurityContext.getInstalled().runSecured(new SecurityContext.FlinkSecuredRunner<Integer>() { + @Override + public Integer run() { + try { + TaskManager.selectNetworkInterfaceAndRunTaskManager(configuration, resourceId, taskManager); + } + catch (Throwable t) { + LOG.error("Error while starting the TaskManager", t); + System.exit(TaskManager.STARTUP_FAILURE_RETURN_CODE()); + } + return null; + } + }); + } catch(Exception e) { + LOG.error("Exception occurred while launching Task Manager. Reason: {}", e); --- End diff -- The signature is error(String msg, Throwable t). You can remove the "Reason: {}".
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