I tried a similar case last week and it could not access to both cluster at
the same time.

Try to connect kafka and hadoop managed by their own KDCs.
I set both KDCs in realms section of krb5.conf.
But NiFi looks using default realms in krb5.conf.

I find a similar ticket.
https://community.hortonworks.com/questions/149808/unable-to-connect-to-two-kdcs-from-nifi.html


On Sat, Jun 23, 2018 at 4:01 AM, Jeff <jtsw...@gmail.com> wrote:

> You can do this by configuring a realm for each KDC to krb5.conf.
>
> On Fri, Jun 22, 2018 at 10:37 AM Bryan Bende <bbe...@gmail.com> wrote:
>
> > Java assumes there is one krb5.conf file loaded by the JVM. It looks
> > for the system property java.security.krb5.conf or falls back to
> > looking in well-known locations, but still only expects one [1].
> >
> > NiFi requires you to set the location in nifi.properties and uses that
> > value to set the system property above.
> >
> > There may be a way to create a single krb5.conf with multiple KDCs,
> > but I'm not sure exactly how to do it.
> >
> > [1]
> > https://docs.oracle.com/javase/8/docs/technotes/guides/security/jgss/
> tutorials/KerberosReq.html
> >
> > On Fri, Jun 22, 2018 at 10:10 AM, Milan Das <m...@interset.com> wrote:
> > > The problem is krb5.conf. There are two different krb5.conf with two
> > different kdc server.
> > > Regards,
> > > Milan Das
> > >
> > > On 6/22/18, 2:04 AM, "Koji Kawamura" <ijokaruma...@gmail.com> wrote:
> > >
> > >     Hi Milan,
> > >
> > >     I haven't tried myself, but since NiFi has Kerberos configuration
> per
> > >     Processor instance, e.g. ListHDFS or PutHDFS, NiFi should be able
> to
> > >     connect multiple Hadoop clusters accessed by different Kerberos
> > principals
> > >     and keytabs. Principals must resolve domain (realm) correctly, if
> > both
> > >     Hadoop cluster use the same domain such as 'EXAMPLE.COM', then it
> > will be
> > >     problematic for NiFi to find the right KDC server.
> > >
> > >     Thanks,
> > >     Koji
> > >
> > >     On Fri, Jun 22, 2018 at 12:23 AM, Milan Das <m...@interset.com>
> > wrote:
> > >
> > >     > Hello Team,
> > >     >
> > >     > I have very unique problem. We are integration two kerberized
> > haddop
> > >     > system and they have their own Kerbros setup.
> > >     >
> > >     > Is it possible to two Kerberos kdc configurations in NIFI ?
> > Integration is
> > >     > Kafka from one Hadoop to Kafka on 2nd Hadoop.
> > >     >
> > >     > Really appreciate any thoughts.
> > >     >
> > >     >
> > >     >
> > >     > Regards,
> > >     >
> > >     > Milan Das
> > >     >
> > >     >
> > >     >
> > >     > [image: ograph]
> > >     >
> > >     > *Milan Das*
> > >     > Sr. System Architect
> > >     >
> > >     > email: m...@interset.com
> > >     > mobile: +1 678 216 5660 <(678)%20216-5660>
> > >     >
> > >     > [image: edIn icon] <https://www.linkedin.com/in/milandas/>
> > >     >
> > >     > www.interset.com
> > >     >
> > >     >
> > >     >
> > >     >
> > >     >
> > >
> > >
> > >
> >
>

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