NiFi 3 nodes insync

[deebify]

Hello,

I'm currently running a NiFi cluster with 3 pods managed by the Stackable NiFi Operator. Recently, I encountered an issue where only one pod was active, while the other two pods appeared to be unresponsive and not fully functional. When I restarted the unresponsive pods, the previously active pod went down and showing as disconnected.

Before this pod went down, I observed that my flows were present, but it was disconnected from the cluster. I had more than 15 Processor Groups set up.

After the pods restarted and the cluster connected, I noticed the canvas was completely empty, as if all flows had been wiped clean. Fortunately, I had previously deployed a custom instance of NiFi Registry to back up my flows.

Does anyone have insight into why this might be happening?