如果报错：Can't get Kerberos realm，解决办法：将krb5.conf 复制至 /etc/目录，注意: ln -s 方式连接至/etc/krb5.conf是不行的!!!
-- HiveServer2 JDBC URL :
drop catalog hive;CREATE CATALOG hive PROPERTIES ('type'='hms','hive.version' = '2.1.1','hive.metastore.uris' = 'thrift://nn1.your_host.com:9083,thrift://nn1.your_host.com:9083','hive.metastore.sasl.enabled' = 'true','hive.metastore.kerberos.principal' = 'hive/_HOST@YOUR_REALM.COM','hadoop.security.authentication' = 'kerberos','hadoop.kerberos.keytab' = '/some_path/your_user.keytab','hadoop.kerberos.principal' = 'your_user@YOUR_REALM.COM','yarn.resourcemanager.principal' = 'rm/_HOST@YOUR_REALM.COM','dfs.nameservices'='mycluster','dfs.ha.namenodes.mycluster'='nn1,nn2','dfs.namenode.rpc-address.mycluster.nn1'='nn1.your_host.com:8020','dfs.namenode.rpc-address.mycluster.nn2'='nn2.your_host.com:8020', 'dfs.client.failover.proxy.provider.mycluster'='org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider'
);switch hive;
show databases;
use hive.your_database;