Hi, I'm installing CDH 5.11 with Cloudera Manager on Cento 7.2, I'm using single user mode with the defualt account cloudera-scm. Everything is OK but failed when I enabled HA. My clusters is like this: roc-master: name node roc-secondary: secondary roc-5, roc-s1, roc-s2: journal node roc-[1-6]: data node when I enabled HA, I selected roc-secondary as the other name node. the error message is as follows on the enable HA page: Failed to initialize Shared Edits Directory of NameNode NameNode (roc-master). Initialization can fail if the Shared Edits Directory is not empty. Check the stderr log for details.: Error found before invoking supervisord: Non-root agent cannot execute process as user 'hdfs'. Then the progress hang at start the name node with the following error message: 2017-05-26 02:27:25,996 INFO org.apache.hadoop.hdfs.server.common.Storage: Lock on /data/d1/dfs/nn/in_use.lock acquired by nodename 20238@roc-master 2017-05-26 02:27:26,607 WARN org.apache.hadoop.hdfs.server.namenode.FSEditLog: Unable to determine input streams from QJM to [192.168.0.47:8485, 192.168.0.69:8485, 192.168.0.51:8485]. Skipping. org.apache.hadoop.hdfs.qjournal.client.QuorumException: Got too many exceptions to achieve quorum size 2/3. 3 exceptions thrown: 192.168.0.47:8485: Journal Storage Directory /data/d1/dfs/jn/scorpio not formatted at org.apache.hadoop.hdfs.qjournal.server.Journal.checkFormatted(Journal.java:472) at org.apache.hadoop.hdfs.qjournal.server.Journal.getEditLogManifest(Journal.java:655) at org.apache.hadoop.hdfs.qjournal.server.JournalNodeRpcServer.getEditLogManifest(JournalNodeRpcServer.java:186) at org.apache.hadoop.hdfs.qjournal.protocolPB.QJournalProtocolServerSideTranslatorPB.getEditLogManifest(QJournalProtocolServerSideTranslatorPB.java:236) at org.apache.hadoop.hdfs.qjournal.protocol.QJournalProtocolProtos$QJournalProtocolService$2.callBlockingMethod(QJournalProtocolProtos.java:25431) at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:617) at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1073) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2220) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2216) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:415) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1920) at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2214) 192.168.0.69:8485: Journal Storage Directory /data/d1/dfs/jn/scorpio not formatted at org.apache.hadoop.hdfs.qjournal.server.Journal.checkFormatted(Journal.java:472) at org.apache.hadoop.hdfs.qjournal.server.Journal.getEditLogManifest(Journal.java:655) at org.apache.hadoop.hdfs.qjournal.server.JournalNodeRpcServer.getEditLogManifest(JournalNodeRpcServer.java:186) at org.apache.hadoop.hdfs.qjournal.protocolPB.QJournalProtocolServerSideTranslatorPB.getEditLogManifest(QJournalProtocolServerSideTranslatorPB.java:236) at org.apache.hadoop.hdfs.qjournal.protocol.QJournalProtocolProtos$QJournalProtocolService$2.callBlockingMethod(QJournalProtocolProtos.java:25431) at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:617) at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1073) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2220) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2216) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:415) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1920) at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2214) the cloudera-scm-agent.log, the log is as follows: [26/May/2017 02:27:08 +0000] 17557 MainThread process INFO Deactivating process 1764-hdfs-NAMENODE-format [26/May/2017 02:27:08 +0000] 17557 MainThread util INFO Using generic audit plugin for process namenode-initialize-shared-edits [26/May/2017 02:27:08 +0000] 17557 MainThread util INFO Creating metadata plugin for process namenode-initialize-shared-edits [26/May/2017 02:27:08 +0000] 17557 MainThread util INFO Using specific metadata plugin for process namenode-initialize-shared-edits [26/May/2017 02:27:08 +0000] 17557 MainThread util INFO Using generic metadata plugin for process namenode-initialize-shared-edits [26/May/2017 02:27:08 +0000] 17557 MainThread agent INFO [1765-namenode-initialize-shared-edits] Instantiating process [26/May/2017 02:27:08 +0000] 17557 MainThread process INFO [1765-namenode-initialize-shared-edits] Updating process: True {} [26/May/2017 02:27:08 +0000] 17557 MainThread agent ERROR Failed to activate {u'refresh_files': [], u'config_generation': 0,u'auto_restart': False, u'running': True, u'required_tags': [u'cdh'], u'one_off': True, u'special_file_info': [], u'group': u'hdfs', u'id': 1765, u'status_links': {}, u'name': u'namenode-initialize-shared-edits', u'extra_groups': [], u'run_generation': 1, u'start_timeout_seconds': None, u'environment': {u'HADOOP_AUDIT_LOGGER': u'INFO,RFAAUDIT', u'CM_ADD_TO_CP_DIRS': u'navigator/cdh57', u'HADOOP_NAMENODE_OPTS':u'-Xms4294967296 -Xmx4294967296 -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:CMSInitiatingOccupancyFraction=70 -XX:+CMSParallelRemarkEnabled -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/tmp/hdfs_hdfs-NAMENODE-0f2bd0a3cf1534ca0c41e5c9cb5266fa_pid{{PID}}.hprof -XX:OnOutOfMemoryError={{AGENT_COMMON_DIR}}/killparent.sh', u'HADOOP_SECURITY_LOGGER': u'INFO,RFAS', u'HADOOP_CREDSTORE_PASSWORD': u'ifzbuyq7pv4key60lzjxjszy', u'HADOOP_LOG_DIR': u'/var/log/hadoop-hdfs', u'HADOOP_ROOT_LOGGER': u'INFO,console', u'HADOOP_LOGFILE': u'hadoop-cmf-hdfs-NAMENODE-roc-master.log.out', u'CDH_VERSION': u'5'}, u'optional_tags': [u'cdh-plugin', u'hdfs-plugin'], u'program': u'hdfs/hdfs.sh', u'arguments': [u'initializeSharedEdits'], u'parcels': {u'SPARK2': u'2.1.0.cloudera1-1.cdh5.7.0.p0.120904', u'CDH': u'5.11.0-1.cdh5.11.0.p0.34', u'ACCUMULO': u'1.7.2-5.5.0.ACCUMULO5.5.0.p0.8', u'KAFKA': u'2.1.1-1.2.1.1.p0.18'}, u'resources': [], u'user': u'hdfs'} Traceback (most recent call last): File "/usr/lib64/cmf/agent/build/env/lib/python2.7/site-packages/cmf-5.11.0-py2.7.egg/cmf/agent.py", line 1702, in handle_heartbeat_p rocesses new_process.update_heartbeat(raw, True) File "/usr/lib64/cmf/agent/build/env/lib/python2.7/site-packages/cmf-5.11.0-py2.7.egg/cmf/process.py", line 304, in update_heartbeat self.fs_update() File "/usr/lib64/cmf/agent/build/env/lib/python2.7/site-packages/cmf-5.11.0-py2.7.egg/cmf/process.py", line 426, in fs_update raise Exception("Non-root agent cannot execute process as user '%s'" % user) Exception: Non-root agent cannot execute process as user 'hdfs' It seems like an user permission problem, so I checked the agent process: clouder+ 17557 1 1 02:20 ? 00:07:14 python2.7 /usr/lib64/cmf/agent/build/env/bin/cmf-agent --package_dir /usr/lib64/cmf/service --agent_dir /var/run/cloudera-scm-agent --lib_dir /var/lib/cloudera-scm-agent --logfile /var/log/cloudera-scm-agent/cloudera-scm-agent.log --daemon --comm_name cmf-agent --pidfile /var/run/cloudera-scm-agent/cloudera-scm-agent.pid the agent is running as the user cloudera-scm, and in the /etc/sudoers I've specified the following line: %cloudera-scm ALL=(ALL) NOPASSWD: ALL But the log shows when initial the shared edits, it was doing with another user 'hdfs'. I checked the code in /usr/lib64/cmf/agent/build/env/lib/python2.7/site-packages/cmf-5.11.0-py2.7.egg/cmf/process.py, seems like it checks the agent's user (here is cloudera-scm) and the user who does the shared edits initialization and found cloudera-scm is neither 'hdfs' nor 'root', so it raised the exception "Exception: Non-root agent cannot execute process as user 'hdfs'". I also checked the shared edits folder /data/d1/dfs/jn, indeed it is empty. I'm not sure that, I'm using the singer user mode (cloudera-scm), why it changes to 'hdfs' to executes the initialization? How to fix the problem to enable HA in my case? Thanks, MH ... View more