Changing NiFi runtime version

You can change the Apache NiFi runtime version for your deployment. Generally, you change NiFi runtime version to pick up hotfixes and the latest NiFi version. However, when you create a deployment you can also pick the NiFi version to align with your flow certification needs. Cloudera recommends that you always use the latest NiFi version if possible.

If you opt to change the NiFi runtime version, the process is carried out node by node. If your deployment has multiple nodes, the deployment continues to run. If the deployment has only one node, it stops for a short period of time.

You must have deployed a flow definition in Cloudera Data Flow.
You must have the DFFlowAdmin role.

Open Cloudera Data Flow by clicking the Data Flow tile in the Cloudera sidebar.
Click Deployments from the left navigation pane.
The Deployments page is displayed, by default the Deployments tab is active.

tip

You can customize this page view by using the Deployment Status, Flow Status, Environments, Projects, Metrics window, and Items per page options.
Select a deployment to expand the Deployment & Flows pane where you can view deployment details, KPIs, system metrics, alerts, and event history information. This is the view where you can also access flows on that specific deployment.
In Deployment & Flows, click Actions > Manage Deployment.
You are redirected to the Deployment Manager page.
Click Actions on the Manage Deployment page.
Select Change NiFi Runtime Version.
The Change NiFi Runtime Version modal opens. It shows the current NiFi runtime version and a list of available version numbers.
Select the new version number from the New Version dropdown, and click Update.

You can use the update-nifi-version CDP CLI command to change the NiFi runtime version of a deployment from the command line.

update-nifi-version
--environment-crn [***CRN***]
--deployment-crn [***CRN***]
--cfm-nifi-version [***NIFI VERSION***]
[--cli-input-json [***JSON STRING***]]
[--generate-cli-skeleton]

where

--environment-crn (string): The CRN of an environment to execute the command.
--deployment-crn (string): The deployment crn.
--cfm-nifi-version (string): The NiFi version to which to update the deployment.
--cli-input-json (string): Performs service operation based on the JSON string provided. The JSON string follows the format provided by --generate-cli-skeleton. If other arguments are provided on the command line, the CLI values will override the JSON-provided values.
--generate-cli-skeleton (boolean): Prints a sample input JSON to standard output. Note the specified operation is not run if this argument is specified. The sample input can be used as an argument for --cli-input-json.