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From Takanobu Asanuma <tasan...@yahoo-corp.jp>
Subject RE: Authorization problems of NiFi secured cluster
Date Wed, 28 Jun 2017 03:59:07 GMT
Hi Matt and Koji,

Thanks for the information. So if there is not any flow.xml.gz in conf directory when a secured
nifi cluster is starting, we need to add "Node Identity" (and "Initial Admin Identity") to
the policies (each component or PG) explicitly, right? That's my case. After adding flow.xml.gz
and then starting the secured cluster, I confirmed that the policies are set automatically.

-----Original Message-----
From: Koji Kawamura [mailto:ijokarumawak@gmail.com] 
Sent: Tuesday, June 27, 2017 10:06 PM
To: dev <dev@nifi.apache.org>
Subject: Re: Authorization problems of NiFi secured cluster

Thanks Matt for clarification. My cluster had an existing flow.xml I happened copied from
another NiFi instance.

On Jun 27, 2017 9:14 PM, "Matt Gilman" <matt.c.gilman@gmail.com> wrote:

Takanobu,

The dataflow-specific policies (any policies on the root Process Group) are only granted for
new instances when there is an existing flow.xml.gz in your <NIFI_HOME>/conf directory.
When there is no flow and the NiFi instance is joining a cluster the policies cannot be granted
at start up because the components technically do not exist yet. However, your Initial Admin
is given the required permissions to grant those dataflow-specific policies once the nodes
have all joined the cluster. There is a short snippet in the Admin guide describing this behavior
[1] (if you scroll down a little bit looking for the little info (i) icon on the left).

Hope that clears it up.

Matt

[1]
https://nifi.apache.org/docs/nifi-docs/html/administration-
guide.html#authorizer-configuration

On Tue, Jun 27, 2017 at 6:03 AM, Takanobu Asanuma <tasanuma@yahoo-corp.jp>
wrote:

> Hi Koji,
>
> Thank you very much for the confirmation. Hmm... I will continue to 
> investigate why my cluster does not work correctly.
>
> Thanks again,
> Takanobu
>
> -----Original Message-----
> From: Koji Kawamura [mailto:ijokarumawak@gmail.com]
> Sent: Tuesday, June 27, 2017 5:59 PM
> To: dev <dev@nifi.apache.org>
> Subject: Re: Authorization problems of NiFi secured cluster
>
> I just created a brand-new secured cluster now. NiFi automatically 
> created a policy "view the data" (and others) with the user defined as 
> "Initial Admin Identity" and "Node Identity" in conf/authorizers.xml.
> It seems working as expected.
>
> Koji
>
> On Tue, Jun 27, 2017 at 5:26 PM, Koji Kawamura 
> <ijokarumawak@gmail.com>
> wrote:
> > Hi Takanobu,
> >
> > Glad to hear that you have it fixed.
> >
> >> Although I defined the Node Identity before stating the cluster at 
> >> the
> first time, it seemed NiFi did not automatically create the policies 
> and I needed to add the Node Identity to the policy explicitly.
> >
> > Thanks for sharing, ideally NiFi cluster should work without adding 
> > the policy manually.
> > I will try to setup a brand-new secured NiFi cluster to see what 
> > initial policy setting will look like.
> > https://nifi.apache.org/docs/nifi-docs/html/administration-guide.htm
> > l#
> > cluster-node-identities
> >
> > Thanks,
> > Koji
> >
> > On Tue, Jun 27, 2017 at 5:08 PM, Takanobu Asanuma 
> > <tasanuma@yahoo-corp.jp> wrote:
> >> Hi Koji,
> >>
> >> Thank you for your quick and valuable answer! That's exactly what I
> need. After adding "Node Identity" of authorizers.xml to the "view the 
> data" policy, the authorized user can list the queue.
> >>
> >>>> IIRC, if you define the Node Identity before starting the secured
> cluster at the first time, NiFi automatically creates necessary 
> policies for each node to proxy user request (I maybe wrong on this..).
> >>
> >> Although I defined the Node Identity before stating the cluster at 
> >> the
> first time, it seemed NiFi did not automatically create the policies 
> and I needed to add the Node Identity to the policy explicitly.
> >>
> >> Thanks again!
> >> Takanobu
> >>
> >> -----Original Message-----
> >> From: Koji Kawamura [mailto:ijokarumawak@gmail.com]
> >> Sent: Tuesday, June 27, 2017 2:32 PM
> >> To: dev <dev@nifi.apache.org>
> >> Subject: Re: Authorization problems of NiFi secured cluster
> >>
> >> Hello Takanobu,
> >>
> >> If the issue doesn't happen with standalone mode, I assume it 
> >> happens
> because the security policy does not allow NiFi node to "view the data".
> >>
> >> When a user sends a request to a node within a cluster, the node
> proxies the request to other nodes within the same cluster.
> >> I'd recommend to check if conf/authorizers.xml has Node Identity
> properties, looks like this:
> >>
> >> <authorizer>
> >>   ...
> >>   <property name="Node Identity 1">CN=localhost, OU=NIFI</property>

> >> </authorizer>
> >>
> >> IIRC, if you define the Node Identity before starting the secured
> cluster at the first time, NiFi automatically creates necessary 
> policies for each node to proxy user request (I maybe wrong on 
> this..). If you already have the cluster started, then you can add 
> NiFi node as a user
then
> add it to the "view the data" policy manually (probably at the root 
> PG's policy would be the most appropriate place).
> >>
> >> I confirmed that the issue can be reproduced by removing NiFi node 
> >> user
> from "view the data" policy.
> >>
> >> Please try above and let us know if it addresses your issue.
> >>
> >> Thanks,
> >> Koji
> >>
> >> On Tue, Jun 27, 2017 at 1:12 PM, Takanobu Asanuma <
> tasanuma@yahoo-corp.jp> wrote:
> >>> Hello experts,
> >>>
> >>> When I created a NiFi cluster with security, any users can't list 
> >>> any
> queues due to "insufficient permissions" though the users have the 
> permissions.
> >>>
> >>> For example, there is a dataflow which contains processor-A and
> processor-B, and processor-A is connecting to processor-B. In this 
> case, even if user1 has the policies which are view/modify the 
> component/data of processor-A and processor-B, he can't list the queue of the processors.
> >>>
> >>> This problem only occurs when the secured NiFi instance is 
> >>> clustering
> mode (nifi.cluster.is.node=true). If secured NiFi instance is 
> standalone mode, the problem doesn't happen. I have faced this problem 
> with the
latest
> release version, 1.3.0.
> >>>
> >>> Do you have any thoughts?
> >>>
> >>> Thanks,
> >>> Takanobu Asanuma
>
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