question Falcon replication and mirroring between two Kerberized clusters? in Archives of Support Questions (Read Only)

Falcon replication and mirroring between two Kerberized clusters?

dbaev — Sun, 18 Oct 2015 12:43:27 GMT

Does Falcon support replication and mirroring for HDFS and Hive between two Kerberized clusters (Prod and DR)?

Re: Falcon replication and mirroring between two Kerberized clusters?

bsaini — Sun, 18 Oct 2015 21:56:51 GMT

Can you tell if both these env using same KDC server? DistCP (which is what is used by Falcon for data replication) supports copying data between two kerberos environments so its a matter of making sure that the clusters can communicate correctly.

Re: Falcon replication and mirroring between two Kerberized clusters?

vzlatkin — Mon, 19 Oct 2015 08:42:45 GMT

Set

<property>
    <name>oozie.launcher.mapreduce.job.hdfs-servers</name>
    <value>${nameNode1},${nameNode2}</value>
</property>

As this documentation suggests: http://oozie.apache.org/docs/4.1.0/DG_DistCpActionExtension.html

Re: Falcon replication and mirroring between two Kerberized clusters?

dbaev — Mon, 19 Oct 2015 09:10:20 GMT

Both clusters will be using either local KDC or AD Kerberos

Re: Falcon replication and mirroring between two Kerberized clusters?

vranganathan — Fri, 23 Oct 2015 22:43:42 GMT

Replication works between clusters using Kerberos since Dal (and some additional scenarios using HCat works from Dal-M10

Re: Falcon replication and mirroring between two Kerberized clusters?

bvellanki — Fri, 23 Oct 2015 22:50:51 GMT

Falcon will automatically add this property to oozie jobs in secure kerberized clusters. User does not have to add the property separately.

When defining a cluster entity, please make sure to add the following cluster property.

    <property name="dfs.namenode.kerberos.principal" value="nn/$my.internal@EXAMPLE.COM"/>

http://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.3.0/bk_installing_manually_book/content/configuring_for_secure_clusters_falcon.html