Vitals disonnected and no reconnection

Hi there,

My setup is Hybrid model in a local K8S infra, enterprise version 3.1.1.3.
I found the DP Vitals disconnected after idle a period of time and does not reconnect.

In the DP log, it shows the websocket is not ready, however, the telnet result shows no problem on the CP’s telemetry port.

2023/02/27 03:44:22 [debug] 2176#0: *68443 [lua] messaging.lua:90: [messaging-utils] [vitals] websocket is not ready yet, waiting for next try
2023/02/27 03:44:22 [debug] 2176#0: *68451 [lua] messaging.lua:90: [messaging-utils] [vitals] websocket is not ready yet, waiting for next try

Is there any advice? Thank you.

Pui Wong