My cloud MQTT configuration stopped working for one of my HASS instances running on a raspberry pi 3b+, hassbian V0.79.3
The error on the cloud mqtt service is
2019-01-03 20:27:23: OpenSSL Error: error:14094418:SSL routines:SSL3_READ_BYTES:tlsv1 alert unknown ca
2019-01-03 20:27:23: OpenSSL Error: error:140940E5:SSL routines:SSL3_READ_BYTES:ssl handshake failure
2019-01-03 20:27:23: Socket error on client <unknown>, disconnecting.
But I am not sure what is wrong in my HA configuration to cause this error. It used to work fine so I don’t know what caused it to stop working.
my MQTT confiuration only contains
broker: !secret cloud_mqtt_broker
username: !secret cloud_mqtt_username
password: !secret cloud_mqtt_password
port: !secret cloud_mqtt_ssl_port
Port is set to the ssl port for my cloud mqtt instance.
I don’t set tls_version so that should default to auto.
I think the problem is related to the error alert unknown ca but I don’t know how the certificate authority is configured in hassbian.
I don’t have anything configured in /etc/ssl on my hassbian install but I never did and this used to work so I don’t think that is what I need.
Can anyone point me in the correct direction to solve this?