Host disconnected due to pf9-comms proxy issue

Problem

Host is disconnected from the management plane, even though all the pf9 services [hostagent, comms and sidekick] are actively running.
Host is able to reach management plane over 443 port yet it is showing disconnected.
Pf9-hostagent logs

2024-03-10 16:49:39,257 - slave.py ERROR - Connection error. Retrying in 10 seconds.

Traceback (most recent call last):

File "/opt/pf9/hostagent/lib/python3.6/site-packages/bbslave/slave.py", line 129, in reconnect_loop

channel_retry_period=retry_period)

File "/opt/pf9/hostagent/lib/python3.6/site-packages/bbslave/session.py", line 796, in start

socket_timeout=socket_timeout) # in secs

File "/opt/pf9/hostagent/lib/python3.6/site-packages/bbcommon/amqp.py", line 240, in dual_channel_io_loop

conn.ioloop.start()

File "/opt/pf9/hostagent/lib/python3.6/site-packages/pika/adapters/select_connection.py", line 354, in start

self.poll()

File "/opt/pf9/hostagent/lib/python3.6/site-packages/pika/adapters/select_connection.py", line 602, in poll

self._process_fd_events(fd_event_map, write_only)

File "/opt/pf9/hostagent/lib/python3.6/site-packages/pika/adapters/select_connection.py", line 443, in _process_fd_events

[2024-03-10 16:49:16.647] [ERROR] client - request or response processing failed: RequestError: Error: read ECONNRESET

at new RequestError (/opt/pf9/sidekick/node_modules/request-promise/lib/errors.js:11:15)

at Request.RP$callback [as _callback] (/opt/pf9/sidekick/node_modules/request-promise/lib/rp.js:60:32)

at self.callback (/opt/pf9/sidekick/node_modules/request/request.js:185:22)

at Request.emit (events.js:400:28)

at Request.onRequestError (/opt/pf9/sidekick/node_modules/request/request.js:877:8)

at ClientRequest.emit (events.js:412:35)

at TLSSocket.socketErrorListener (_http_client.js:475:9)

at TLSSocket.emit (events.js:400:28)

at emitErrorNT (internal/streams/destroy.js:106:8)

at emitErrorCloseNT (internal/streams/destroy.js:74:3)

at processTicksAndRejections (internal/process/task_queues.js:82:21)

Service pf9-comms failing to establish communication with sni-broker and sni-vouch specifically. Rest of the tunnels are intact.

[2024-03-10 16:34:23.625] [ERROR] sni-broker-openstack.v4.<DU-FQDN>-127.0.0.1-5673-3 - TLS socket for client 118749 error: Error: read ECONNRESET

[2024-03-10 16:34:23.626] [ERROR] sni-broker-openstack.v4.<DU-FQDN>-127.0.0.1-5673-3 - TLS socket for client 118750 error: Error: read ECONNRESET

[2024-03-10 16:35:13.927] [ERROR] sni-vouch-private.v4.<DU-FQDN>-127.0.0.1-5673-3 - TLS socket for client 118735 error: Error: read ECONNRESET

Proxy for pf9-comms service needs to be enabled as per KB; that allows the host to connect to Platform9 Management Plane via proxy server instead of direct connectivity.

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