Hi David. This is very helpful, thank you. I feel like I am close, but I
get an error. My Inbound Rules for my security group now include:
8443 TCP (MyIP)/32
443 TCP (MyIP)/32
22 TCP (MyIP)/32

In my browser - I tried both Edge and Chrome - I use this
URL:
https://ec2-3-238-27-230.compute-1.amazonaws.com:8443
I have also tried with /nifi at the tail end.

I get this error:

*System Error*

*The request contained an invalid host header
[ec2-3-238-27-220.compute-1.amazonaws.com:8443
<http://ec2-3-238-27-220.compute-1.amazonaws.com:8443/>] in the request
[/]. Check for request manipulation or third-party intercept.*

*Valid host headers are [empty] or:*

   - *127.0.0.1*
   - *127.0.0.1:8443 <http://127.0.0.1:8443/>*
   - *localhost*
   - *localhost:8443*
   - *[::1]*
   - *[::1]:8443*
   - *7f661ae687d7*
   - *7f661ae687d7:8443*
   - *172.17.0.2*
   - *172.17.0.2:8443 <http://172.17.0.2:8443/>*


Does this mean I have formed the URL incorrectly?

I also see that I had to add an exception to permit https. When I created
the instance, I created my own pem key pair. It is not signed by any CA.
For a self-signed key pair like this, do I need to install a key in my
browser security store to avoid adding that exception?

Thank you for helping me get that much closer.
Jim

On Tue, Nov 8, 2022 at 5:13 PM David Handermann <exceptionfact...@apache.org>
wrote:

> Hi Jim,
>
> Thanks for the reply and additional background.
>
> The instructions are dated March 2021, which is prior to the release of
> NiFi 1.14.0. In particular, the run command is no longer accurate with the
> default NiFi container image.
>
> The current Docker Hub instructions [1] show the basic command needed
>
> docker run --name nifi -p 8443:8443 -d apache/nifi:latest
>
> In addition, any references to port 8080 in the AWS Security Group rules
> should be changed to 8443. The security group rules for port 80 and 18080
> should be removed.
>
> The instructions that allow plain HTTP access to NiFi on port 8080 should
> NEVER be followed, as this exposes unfiltered and unauthenticated access.
>
> Following those changes, it should be possible to access the NiFi UI using
> the AWS URL:
>
> https://ec2...amazonaws.com:8443
>
> The default installation will generate a username and password, which can
> be found in the container logs:
>
> docker logs nifi | grep Generated
>
> Regards,
> David Handermann
>
> [1] https://hub.docker.com/r/apache/nifi
>
> On Tue, Nov 8, 2022 at 4:00 PM James McMahon <jsmcmah...@gmail.com> wrote:
>
>> Hi and thank you, David and Dmitry. In my case I was following this
>> example,
>>
>> https://joeygoksu.com/software/apache-nifi-on-aws/
>>
>> which results in NiFi installed within a container. So to answer one of
>> your questions, I don’t yet know how or where to find nifi.properties in
>> the container framework. I don’t seem to have the usual /opt/nifi/…..
>> directories on my ec2 instance. Any idea where I need to look for that?
>>
>> These ports are open by my security group Inbound Rules: 22 to MyIP, 80,
>> 8080, and 18080 (per the link) to 0.0.0.0/0, 443 to MyIP.
>>
>> I am able to Putty into my instance as ec2-user with my ppk file, which I
>> created using putty tools from the original pem key pair. When I do putty
>> in, under /opt I find three subdirectories: aws, containerd, and rh.
>> Nothing nifi under any of the three that I can see so far.
>>
>> I start my docker instance with this command:
>> docker run —name nifi -p 18080:8080 -d apache/nifi:latest
>>
>> I can do a ps -ef and see running nifi processes. But I don’t yet know
>> how to get to the nifi logs or properties file.
>>
>> You mentioned using using localhost to get to the canvas UI. This
>> confuses me. Nifi is running on my EC2 instance - a linux host without a
>> browser. I’m in a browser on my laptop. How would localhost in my browser
>> get me to my EC2 instance running nifi?
>>
>> This is the URL I’m using in my browser:
>> http://ec2-3-238-27-220.compute-1.amazonaws.com
>> (that url changes with each Stop/Start of my instance. I’ve yet to
>> investigate how to get AWS to stop changing that IP, but I know it can be
>> done).
>>
>> The browser replies with: ec2…….amazonaws refused to connect.
>>
>> I can ping my laptop IP address from the putty terminal where I am logged
>> in to my instance. I cannot ping the Public DNS of my instance from
>> Powershell on my laptop. Again, that Public DNS is
>> ec2-3-238-27-220.compute-1.amazonaws.com
>>
>> Any help is much appreciated.
>> Jim
>>
>>
>>
>> On Tue, Nov 8, 2022 at 3:03 PM David Handermann <
>> exceptionfact...@apache.org> wrote:
>>
>>> Hi Jim,
>>>
>>> NiFi 1.14.0 and following default to HTTPS on port 8443, listening on
>>> the localhost address. The nifi.web.https.host can be changed to blank in
>>> order to listen on all interfaces, but the default HTTPS setting with
>>> authenticated required should be retained.
>>>
>>> Can you provide the version of NiFi and some additional details on the
>>> nifi.web values from nifi.properties?
>>>
>>> Regards,
>>> David Handermann
>>>
>>> On Tue, Nov 8, 2022 at 1:54 PM James McMahon <jsmcmah...@gmail.com>
>>> wrote:
>>>
>>>> Has anyone successfully configured NiFi on AWS, and accessed it from a
>>>> browser on a Windows desktop? I’ve tried following a few links to do this.
>>>> I’ve verified that my instance security group allows access to 8080 via its
>>>> inbound rules. I’ve putty’ed into the instance via ssh port 22 to verify
>>>> that there are no firewall restrictions. But still I get a message to the
>>>> effect that the server rejected the connection request. Can anyone
>>>> recommend a link that describes a success path for this?
>>>> Thanks in advance for your help.
>>>> Jim
>>>>
>>>

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