Name: Automating Starting Services in Apache NiFi and Applying Parameters
Rating: 3.4 (9141 reviews)
Author: tspannhw

Automating Starting Services in Apache NiFi and Applying Parameters

Automate all the things! You can call these commands interactively or script all of them with awesome devops tools. Andre and Dan can tell you more about that.

Enable All NiFi Services on the Canvas

By running this three times, I get any stubborn ones or ones that needed something previously running. This could be put into a loop and check the status before trying again.

nifi pg-list
nifi pg-status
nifi pg-get-services

The NiFi CLI has interactive help available and also some good documentation:

https://nifi.apache.org/docs/nifi-docs/html/toolkit-guide.html#nifi_CLI

/opt/demo/nifi-toolkit-1.12.1/bin/cli.sh nifi pg-enable-services -u http://edge2ai-1.dim.local:8080 --processGroupId root

/opt/demo/nifi-toolkit-1.12.1/bin/cli.sh nifi pg-enable-services -u http://edge2ai-1.dim.local:8080 --processGroupId root

We could then start a process group if we wanted:

nifi pg-start -u http://edge2ai-1.dim.local:8080 -pgid 2c1860b3-7f21-36f4-a0b8-b415c652fc62

List all process groups

/opt/demo/nifi-toolkit-1.12.1/bin/cli.sh nifi pg-list -u http://edge2ai-1.dim.local:8080

List Parameters

/opt/demo/nifi-toolkit-1.12.1/bin/cli.sh nifi list-param-contexts -u http://edge2ai-1.dim.local:8080 -verbose

Set parameters to set parameter context for a process group, you can loop to do all.

pgid => parameter group id
pcid => parameter context id

I need to put this in a shell or python script:

/opt/demo/nifi-toolkit-1.12.1/bin/cli.sh nifi pg-set-param-context -u http://edge2ai-1.dim.local:8080 -verbose -pgid 2c1860b3-7f21-36f4-a0b8-b415c652fc62 -pcid 39f0f296-0177-1000-ffff-ffffdccb6d90

Example

https://github.com/tspannhw/ApacheConAtHome2020/blob/main/scripts/setupnifi.sh

You could also use the NiFi REST API or Dan's awesome Python API (https://nipyapi.readthedocs.io/en/latest/)).

References