Apache NiFi Remote Process Group or RPG enables flow to direct the FlowFiles in a flow to different NiFi instances using Site-to-Site protocol. As of version 1.7.1, NiFi does not offer balanced relationships, so RPG is used for load balancing in a NiFi data flow.
A developer can add the RPG from the top toolbar of NiFi UI by dragging the icon as shown in the above picture to canvas. To configure an RPG, a Developer has to add the following fields −
| S.No. | Field Name | Description |
|---|---|---|
| 1 | URLs | To specify comma separated remote target NiFi URLs. |
| 2 | Transport Protocol | To specify the transport protocol for remote NiFi instances. It's either RAW or HTTP. |
| 3 | Local Network Interface | To specify the local network interface to send/receive data. |
| 4 | HTTP Proxy Server Hostname | To specify the proxy server's hostname for the purpose of transport in RPG. |
| 5 | HTTP Proxy Server Port | To specify the proxy server's port for the purpose of transport in RPG. |
| 6 | HTTP Proxy User | It is an optional field to specify the username for HTTP proxy. |
| 7 | HTTP Proxy Password | It is an optional field to specify the password for above username. |
A developer needs to enable it, before using it like we start processors before using them.
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