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From Andy LoPresto <>
Subject Re: Variable / Nifi-EL for RPG Endpoint?
Date Thu, 06 Sep 2018 20:11:02 GMT
I think Bryan was referring to Apache NiFi Registry [1] which is the complementary standalone
application which hosts version controlled flow snippets.

[1] <>

Andy LoPresto
PGP Fingerprint: 70EC B3E5 98A6 5A3F D3C4  BACE 3C6E F65B 2F7D EF69

> On Sep 6, 2018, at 1:09 PM, Jon Logan <> wrote:
> Thanks Bryan -- Is that in terms of Docker Registry? We don't currently use
> Docker Registry, but our plan was to bundle a flow.gz into a Docker image
> directly. I'm not sure if maybe we're approaching this problem in a weird
> way? How do most people handle multiple instances in different environments
> that are disconnected from one another? We considered running a Docker
> Registry container as an option, or specifying the flow.gz directly as an
> option...both seem to have some issues and inconveniences.
> Thanks!
> Jon
> On Thu, Sep 6, 2018 at 4:01 PM, Bryan Bende <> wrote:
>> Jon,
>> The RPG URL is treated similar to sensitive properties or parent
>> controller services, meaning that after deploying your flow you can
>> issue an update to the RPG to set the URL to given environment's value
>> and that change will not be considered a change as far as version
>> control and will be retained when upgrading the process group to newer
>> versions.
>> Thanks,
>> Bryan
>> On Thu, Sep 6, 2018 at 3:48 PM, Jon Logan <> wrote:
>>> We are running into a slight issue when we wish to migrate between NiFi
>>> cluster instances...the RPG endpoint in our flow seems to disallow
>> setting
>>> of a variable, which makes our flow have to be specific to the specific
>>> environment it's being deployed in. It seems odd that it won't let us use
>>> an expression there and set the value to a variable -- is this an
>>> oversight? Is there some design decision here that we're missing?
>>> Thanks!

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