@Andres Urrego Some laptops/desktop you might need to enable virtualization Please go through theses steps Power on the machine and open the BIOS (as per Step 1). Open the Processor submenu The processor settings menu may be hidden in the Chipset, Advanced CPU Configuration or Northbridge. Enable Intel Virtualization Technology (also known as Intel VT) or AMD-V depending on the brand of the processor. ... View more

@D Giri Did you by chance download the CSV file with the keytabs for manual creation? There is an option to ONLY regenerate keytabs for missing hosts and components !! Did you correctly key in the user/passowrd in the Ambari-Kerberos wizard? Could you briefly describe your cluster setup? Master/slave and where the KDC is installed? Make sure the [realms] and [domain_realms] entries in /etc/krb5.conf is correct. Validate the contents of these 2 files /var/kerberos/krb5kdc/kdc.conf , /var/kerberos/krb5kdc/kadm5.acl Can you share the contents of the above file don't forget to scramble site specific information ... View more

@arjun more If you have KDC and AD integrated, this simply means the account to which the keytab is related has been disabled, locked, expired, or deleted. The AD service account should NEVER expire. If not could you validate the below steps Make sure the [realms] and [domain_realms] entries in cat /etc/krb5.conf is correct. Validate the contents of these 2 files /var/kerberos/krb5kdc/kdc.conf , /var/kerberos/krb5kdc/kadm5.acl Check the hdfs prinncipal # kadmin.local Authenticating as principal hdfs-uktehdpprod/admin@EUROPE.ODCORP.NET with password. kadmin.local: listprincs hdfs* hdfs-uktehdpprod@EUROPE.ODCORP.NET kadmin.local: Get the correct prncipal for hdfs # klist -kt /etc/security/keytabs/hdfs.headless.keytab Keytab name: FILE:/etc/security/keytabs/hdfs.headless.keytab KVNO Timestamp Principal ---- ------------------- ------------------------------------------------------ 1 08/24/2017 15:42:23 hdfs-uktehdpprod@EUROPE.ODCORP.NET 1 08/24/2017 15:42:23 hdfs-uktehdpprod@EUROPE.ODCORP.NET 1 08/24/2017 15:42:23 hdfs-uktehdpprod@EUROPE.ODCORP.NET Try grabbing a valid Kerberos ticket # kinit -kt /etc/security/keytabs/hdfs.headless.keytab hdfs-uktehdpprod@EUROPE.ODCORP.NET Validate the avalability period # klist Ticket cache: FILE:/tmp/krb5cc_0 Default principal: hdfs-uktehdpprod@EUROPE.ODCORP.NET Valid starting Expires Service principal 10/04/2017 19:36:12 10/05/2017 19:36:12 krbtgt/EUROPE.ODCORP.NET@EUROPE.ODCORP.NET Please revert ... View more

@D Giri HDP 2.6 has a new feature called Service Auto start see Ambaru UI-->admin-> Service Auto Start Can you validate that the component status ? Or the Auto start Services status should be either enabled/disabled Can you also check the KDC if the principals are createdCan you also check in the KDC # kadmin.local kadmin.local: listprincs Are you running Ambari as root if not then that user MUST authorization to write to /var/lib/ambari-server/tmp. Please revert ... View more

@ashim sinha Here is a good document that you use as a reference. Let me know ... View more

@Sree Kupp I see you are attempting something that is taken care of by real HA setup with active and standby namenode, you can use below command to force failover. $ hdfs haadmin -failover Let me know whether that helps ... View more

@ashim sinha Hive CLI is now a legacy tool.HiveServer1 is already deprecated it has been a while that Hive community has been recommending Beeline + HS2 configuration, ideally because of the deprecation Hive CLI, use the below example to achieve the same goal. Assuming you have the correct hive principal replace the below with appropriate values. This is how it works on my cluster ########################################################### # Access HiveServer2 in kerberized cluster # hive CLI has been deprecated in HS2 ########################################################### # su - hive [hive@london ~]$ beeline Beeline version 1.2.1000.2.5.3.0-37 by Apache Hive beeline> ! connect jdbc:hive2://london.uk.com:10000/;principal=hive/london.uk.com@TEST.COM Connecting to jdbc:hive2://london.uk.com:10000/;principal=hive/london.uk.com@TEST.COM Enter username for jdbc:hive2://london.uk.com:10000/;principal=hive/london.uk.com@TEST.COM: Enter password for jdbc:hive2://london.uk.com:10000/;principal=hive/london.uk.com@TEST.COM: Connected to: Apache Hive (version 1.2.1000.2.5.3.0-37) Driver: Hive JDBC (version 1.2.1000.2.5.3.0-37) Transaction isolation: TRANSACTION_REPEATABLE_READ 0: jdbc:hive2://london.uk.com:10000/> show databases; +----------------+--+ | database_name | +----------------+--+ | default | | moroto | | jair | +----------------+--+ 3 rows selected (2.863 seconds) 0: jdbc:hive2://london.uk.com:10000> use jair; No rows affected (0.097 seconds) 0: jdbc:hive2://london.uk.com:10000> show tables; +-----------+--+ | tab_name | +-----------+--+ | employee | +-----------+--+ 1 row selected (0.162 seconds) 0: jdbc:hive2://london.uk.com:10000/> select * from employee; +--------------+----------------+------------------+-----------------------+--+ | employee.id | employee.name | employee.salary | employee.destination | +--------------+----------------+------------------+-----------------------+--+ | 1201 | Gopal | 45000 | Technical manager | | 1202 | Manisha | 45000 | Proof reader | | 1203 | Masthanvali | 40000 | Technical writer | | 1204 | Kiran | 40000 | Hr Admin | | 1205 | Kranthi | 30000 | Op Admin | | 1206 | Geoffrey | 45000 | DevOPS | | 1207 | Salvatore | 30000 | IT Lead | | 1208 | Dave | 40000 | Cleaner | | 1206 | Geoffrey | 45000 | DevOPS | | 1207 | Shelly | 30000 | IT Lead | | 1208 | Dave | 40000 | Cleaner | | 1209 | fid | 40000 | Cleaner | | 1210 | Grid | 40000 | Clerk | | 1211 | Dred | 40000 | Masseuse | | 1212 | stad | 40000 | boss | | 1213 | jair | 40000 | cook | | 1214 | Jenelle | 40000 | handyman | +--------------+----------------+------------------+-----------------------+--+ 17 rows selected (7.172 seconds) Please let me know if you have any issue I will gladly help ... View more

@Benjamin Hopp Can you try to validate by doing the below steps $ kdestroy The grab a ticket as the nifi user [root@host ~]# sudo su - nifi_user $ kinit Password for nifi_user@NAM.xxxxxxxx.COM: $ klist Ticket cache: FILE:/tmp/krb5cc_49393 Default principal: nifi_user@NAM.xxxxxxxx.COM Valid starting Expires Service principal 09/28/17 17:06:44 09/29/17 03:06:44 krbtgt/ NAM.xxxxxxxx.COM@NAM.xxxxxxxx.COM Tell me if that works ... View more

@Anish Gupta Here is an extract of a HCC solution https://nicholasmaillard.wordpress.com/2015/07/20/formatting-hdfs/ The above article describes right steps to format hdfs for HA enabled clusters as below: "The initial steps are very close Stop the Hdfs service Start only the journal nodes (as they will need to be made aware of the formatting) On the first namenode (as user hdfs) hadoop namenode -format hdfs namenode -initializeSharedEdits -force (for the journal nodes) hdfs zkfc -formatZK -force (to force zookeeper to reinitialise) restart that first namenode On the second namenode hdfs namenode -bootstrapStandby -force (force synch with first namenode) On every datanode clear the data directory Restart the HDFS service These steps should help you to overcome the issue. ... View more