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  1. Hive
  2. HIVE-21899

Utils.getCanonicalHostName() may return IP address depending on DNS infra

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      if there is not PTR record of hostname A in DNS,
      org.apache.hive.jdbc.Utils.getCanonicalHostName(“A”) return IP Address.
      And failed connecting secured HS2 or HMS because cannot getting kerberos service ticket of HS2 or HMS using ip address.

      workaround is adding hostname A and IP to /etc/hosts, it is uncomfortable.

      below is krb5 debug log.
      note that Server not found in Kerberos database and hive/10.1.1.1@EXAMPLE.COM

      Picked up JAVA_TOOL_OPTIONS: -Dsun.security.krb5.debug=true
      
      Connecting to jdbc:hive2://zk1.example.com:2181,zk2.example.com:2181,zk.example.com:2181/default;principal=hive/_HOST@EXAMPLE.COM;serviceDiscoveryMode=zooKeeper;zooKeeperNamespace=hiveserver2
      Java config name: /etc/krb5.conf
      Loaded from Java config
      Java config name: /etc/krb5.conf
      Loaded from Java config
      >>> KdcAccessibility: reset
      >>> KdcAccessibility: reset
      >>>DEBUG <CCacheInputStream>  client principal is magnum@EXAMPLE.COM
      >>>DEBUG <CCacheInputStream> server principal is krbtgt/EXAMPLE.COM@EXAMPLE.COM
      >>>DEBUG <CCacheInputStream> key type: 18
      >>>DEBUG <CCacheInputStream> auth time: Thu Jun 20 12:46:45 JST 2019
      >>>DEBUG <CCacheInputStream> start time: Thu Jun 20 12:46:45 JST 2019
      >>>DEBUG <CCacheInputStream> end time: Fri Jun 21 12:46:43 JST 2019
      >>>DEBUG <CCacheInputStream> renew_till time: Thu Jun 27 12:46:43 JST 2019
      >>> CCacheInputStream: readFlags()  FORWARDABLE; RENEWABLE; INITIAL; PRE_AUTH;
      Found ticket for magnum@EXAMPLE.COM to go to krbtgt/EXAMPLE.COM@EXAMPLE.COM expiring on Fri Jun 21 12:46:43 JST 2019
      Entered Krb5Context.initSecContext with state=STATE_NEW
      Found ticket for magnum@EXAMPLE.COM to go to krbtgt/EXAMPLE.COM@EXAMPLE.COM expiring on Fri Jun 21 12:46:43 JST 2019
      Service ticket not found in the subject
      >>> Credentials acquireServiceCreds: same realm
      Using builtin default etypes for default_tgs_enctypes
      default etypes for default_tgs_enctypes: ........
      >>> CksumType: sun.security.krb5.internal.crypto.RsaMd5CksumType
      >>> EType: sun.security.krb5.internal.crypto.Aes256CtsHmacSha1EType
      >>> KrbKdcReq send: kdc=kerberos.example.com UDP:88, timeout=30000, number of retries =3, #bytes=661
      >>> KDCCommunication: kdc=kerberos.example.com UDP:88, timeout=30000,Attempt =1, #bytes=661
      >>> KrbKdcReq send: #bytes read=171
      >>> KdcAccessibility: remove kerberos.example.com
      >>> KDCRep: init() encoding tag is 126 req type is 13
      >>>KRBError:
               cTime is Wed Dec 16 00:15:05 JST 1998 913734905000
               sTime is Thu Jun 20 12:50:30 JST 2019 1561002630000
               suSec is 659395
               error code is 7
               error Message is Server not found in Kerberos database
               cname is magnum@EXAMPLE.COM
               sname is hive/10.1.1.1@EXAMPLE.COM
               msgType is 30
      KrbException: Server not found in Kerberos database (7) - LOOKING_UP_SERVER
              at sun.security.krb5.KrbTgsRep.<init>(KrbTgsRep.java:73)
              at sun.security.krb5.KrbTgsReq.getReply(KrbTgsReq.java:251)
              at sun.security.krb5.KrbTgsReq.sendAndGetCreds(KrbTgsReq.java:262)
              at sun.security.krb5.internal.CredentialsUtil.serviceCreds(CredentialsUtil.java:308)
              at sun.security.krb5.internal.CredentialsUtil.acquireServiceCreds(CredentialsUtil.java:126)
              at sun.security.krb5.Credentials.acquireServiceCreds(Credentials.java:458)
      
      

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        1. HIVE-21899.001.patch
          0.9 kB
          KWON BYUNGCHANG

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              • Assignee:
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                Reporter:
                magnum KWON BYUNGCHANG
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