cdh开启kerberos，spark访问hbase，在yarn-cluster环境提交执行

环境准备

cdh集群，开启kerberos认证，需要通过spark访问hbase

本地idea开发

//是否需要kerberos认证
val IS_KERBEROS = PropertiesUtils.getBoolean("hbase.kerberos")
//krb5.conf路径
val KRB5_CONF_PATH = PropertiesUtils.getString("java.security.krb5.conf")
//hbase.keytab路径
val KEYTAB_PATH = PropertiesUtils.getString("hbase.kerberos.keytab.path")
//一般都是hbase/xxx@XXX.COM
val KERBEROS_USER = PropertiesUtils.getString("hbase.kerberos.user")

//hbase-site.xml路径
val HBASE_SITE_FILE = PropertiesUtils.getString("hbase.site.file")
//core-site.xml路径
val CORE_SITE_FILE = PropertiesUtils.getString("core.site.file")
//hdfs-site.xml路径
val HDFS_SITE_FILE = PropertiesUtils.getString("hdfs.site.file")

 def login(conf: Configuration): Option[UserGroupInformation] = {
   //kerberos
   try {
     System.setProperty("java.security.krb5.conf", KRB5_CONF_PATH)
     conf.set("hadoop.security.authentication", "Kerberos")
     // 这个hbase.keytab也是从远程服务器上copy下来的, 里面存储的是密码相关信息
     // 这样我们就不需要交互式输入密码了
     conf.set("keytab.file", KEYTAB_PATH)
     // 这个可以理解成用户名信息，也就是Principal
     conf.set("kerberos.principal", KERBEROS_USER)
     UserGroupInformation.setConfiguration(conf)
     val ugi: UserGroupInformation = UserGroupInformation.loginUserFromKeytabAndReturnUGI(KERBEROS_USER, KEYTAB_PATH)
     Some(ugi)
   }catch {
     case e: IOException =>
       logger.error(s"login hbase from keytab error,Cause:${e}")
       None
   }
 }
 
 def getConnection(conf: Configuration): Connection = {
   if (IS_KERBEROS) {
     conf.addResource(new Path(CORE_SITE_FILE))
     conf.addResource(new Path(HDFS_SITE_FILE))
     conf.addResource(new Path(HBASE_SITE_FILE))
   } else {
     conf.set(HConstants.ZOOKEEPER_QUORUM,QUORUM)
     conf.set(HConstants.ZOOKEEPER_CLIENT_PORT,PORT)
     conf.set(HConstants.ZOOKEEPER_ZNODE_PARENT,ZNODE)
   }
   ConnectionFactory.createConnection(conf)
 }
 def getData(tableName: String,get: Get): Option[JSONObject] = {
   val conf: Configuration = HBaseConfiguration.create()
   if (IS_KERBEROS) {
     val ugi: UserGroupInformation = login(conf).get
     ugi.doAs(new PrivilegedExceptionAction[Option[JSONObject]] {
       override def run(): Option[JSONObject] = getHBaseData(tableName, get, conf)
     })
   } else {
     getHBaseData(tableName, get, conf)
   }
 }

获取链接后，后续进行业务处理

生产环境测试

报错1

kerberos认证失败，登陆异常
给每个yarn节点的hbase.keytab文件更改权限
chmod 666 /opt/hbase.keytab

报错2

遇到Insufficient permissions for user 'hive'异常，hive用户没有权限读取hbase表数据
打开hbase shell，输入
grant 'hive','RWXCA'
后续再研究使用hbase用户或者其他用户认证kerberos后，反而报hive用户没有权限读取hbase表数据异常。

参考

https://blog.youkuaiyun.com/blackice1015/article/details/49422855
https://blog.youkuaiyun.com/fanchw/article/details/108770529