@Mike Wong These 2 commands should give you the correct format of the hostnames. $ hostname -f or $ cat /etc/hosts Can you correct the names and restart the zookeepers Have you checked in the Ambari UI --->Zookeeper--->Config parameter--> Zookeeper Server --->Zookeeper Server host(s) Do the name correspond ? ... View more

@Mike Wong Stop the zookeeper through Ambari UI. Then check for any zookeeper rogue process still running remember you had tried to start it manually $ ps -ef grep | zookeeper Note the PID from the above output $ kill -9 PID Clean the .log and .out logs in /var/log/zookeeper # truncate --size 0 zookeeper.log # truncate --size 0 zookeeper-zookeeper-server-FQDN.out Restart through Ambari UI Check for any errors in the above logs ... View more

@Mike Wong If your Ambari is up and running, try using the Ambari UI, See attached screenshot Please revert ... View more

@Ashwin Bommathanahalli @Artem Ervits @Timothy Spann @Jay Kumar SenSharma @Abdelkrim Hadjidj This has become an alarming situation that hortonworks exam team has to address, a week doesn't pass by without a complaint from a candidate. I was a victim of the same situation luckily I had all the proof and I was got a redeem eCredit to re-sit. Hortonworks has great products and getting many certified would go a long way to clinch this niche market. The exam environment provided by PSI is unstable and unreliable from European standpoint and maybe APAC zones I think if we take a poll it will be disastrous. HW shouldn't accept such a negative publicity to ruin its market push. I have copied Jay,Artem,Timothy and Abdelkrim sorry gentlemen I am aware you are employed by HW but not responsible for the exams but I trust you can internally try to debate this issue because it now becomes HW's onus ... View more

@Sriram Environment HDP 2.6.2.0 Ambari 2.5.2.0 MIT Kerberos I just connected as a normal user and followed the below steps, the znode Test was created without any issues. I logged in as a local user without a valid Kerberos ticket $ klist klist: No credentials cache found (ticket cache FILE:/tmp/krb5cc_500) Connected to ZkCli $ cd /usr/hdp/current/zookeeper-server $ ./bin/zkCli.sh ....... [zk: localhost:2181(CONNECTED) 0] ls / [hive, registry, cluster, controller, brokers, zookeeper, infra-solr, hbase-unsecure, kafka-acl, kafka-acl-changes, admin, isr_change_notification, templeton-hadoop, hiveserver2, controller_epoch, druid, rmstore, hbase-secure, ambari-metrics-cluster, consumers, config] Check permissions ACL's [zk: localhost:2181(CONNECTED) 1] getAcl / 'world,'anyone : cdrwa Created a Persistant znode Test [zk: localhost:2181(CONNECTED) 2] create /Test 'siram_issue' Created /Test List Znode child [zk: localhost:2181(CONNECTED) 3] ls /Test [] List Znodes Notice Test is listed [zk: localhost:2181(CONNECTED) 4] ls / [hive, registry, cluster, controller, brokers, zookeeper, infra-solr, hbase-unsecure, kafka-acl, kafka-acl-changes, admin, isr_change_notification, templeton-hadoop, hiveserver2, controller_epoch, druid, Test, rmstore, hbase-secure, ambari-metrics-cluster, consumers, config] Check Status [zk: localhost:2181(CONNECTED) 6] stat /Test cZxid = 0x2997 ctime = Sat May 19 21:49:55 CEST 2018 mZxid = 0x2997 mtime = Sat May 19 21:49:55 CEST 2018 pZxid = 0x2997 cversion = 0 dataVersion = 0 aclVersion = 0 ephemeralOwner = 0x0 dataLength = 13 numChildren = 0 Can you share your steps that failed ? ... View more

@Mike Wong YES the status shows stopped. Did you do the previous steps and restart the RM manually? ... View more

If you are using both Private and public I think the entry should look rather like this, more elegant !! Your earlier entry will not work as you have concatenated 2 IP's 40.117.159.94 10.0.0.6 myhdf.eastus.cloudapp.azure.com myhdf ####################### Private IP's ####################### 40.117.159.94 myhdf.eastus.cloudapp.azure.com myhdf 40.117.251.23 mtvm6.eastus.cloudapp.azure.com mtvm6 104.41.128.170 mtvm5.eastus.cloudapp.azure.com mtvm5 ####################### Public IP's ####################### 10.0.0.6 myhdf.eastus.cloudapp.azure.com myhdf 10.0.0.5 mtvm6.eastus.cloudapp.azure.com mtvm6 10.0.0.7 mtvm5.eastus.cloudapp.azure.com mtvm5 Replace that on all the servers and let me know ... View more

@Matthias Tewordt I am not an AZURE crack so maybe try resolving that using see Azure doc and this Azure DNS ... View more

@Mike Wong I hope this is not production ! 1) Stop Resource Manager 2) Connect with ZK server in /usr/hdp/2.x.x/zookeeper the below uout put is from cluster your output could look slightly different depending on installed components ./bin/zkCli.sh[zk: localhost:2181(CONNECTED) 0] ls / [registry, cluster, brokers, storm, zookeeper, infra-solr, hbase-unsecure, admin, isr_change_notification, templeton-hadoop, hiveserver2, controller_epoch, druid, rmstore, ambari-metrics-cluster, consumers, config] [zk: localhost:2181(CONNECTED) 1] ls /rmstore [ZKRMStateRoot] [zk: localhost:2181(CONNECTED) 2] 3) Remove the znode for RM -- rmr /rmstore [zk: localhost:2181(CONNECTED) 2] rmr /rmstore Restart YARN ... View more