kafka consumer - NoBrokersAvailable: NoBrokersAvailable

[vikasprasad26]

I have been struggling with this issue of No Brokers available while using kafka consumer with below mentioned configuration (kafka-python version 2.0.2).
consumer = KafkaConsumer(
'my-topic',
group_id='my-group',
bootstrap_servers=['host1:port1','host2:port2','host3:port3','host4:port4'],
auto_offset_reset='earliest',
enable_auto_commit=False,
value_deserializer=lambda x: x.decode('utf-8'),
max_poll_interval_ms=9000000,
max_poll_records=50,
sasl_mechanism='SCRAM-SHA-256',
sasl_plain_username=kafka_username,
sasl_plain_password=kafka_password,
security_protocol='SASL_SSL',
ssl_check_hostname=False,
ssl_cafile='root-ca.crt,
)

I have tried adding api_version = (2,0,2) in the config parameters, but issue is not resolved even after that.
since, consumer.bootstrap_connected() value is coming as False

@dpkp @mumrah and others, please have a look.