Datastax Driver giving connection error after enabling client to node SSL on Cassandra port 9142

Question

Enabled SSL on cassandra nodes on port 9142. The service is running fine when testing it from local but getting AllNodesFailedException when deploying on ECS cluster. Using the same keystore locally. Non SSL Port 9042 is working ok.

Failed to instantiate [com.datastax.oss.driver.api.core.CqlSession]: Factory method 'session' threw exception; nested exception is com.datastax.oss.driver.api.core.AllNodesFailedException: Could not reach any contact point, make sure you've provided valid addresses (showing first 3 nodes, use getAllErrors() for more): Node(endPoint=ip-10-18-28-203.us-west-2.compute.internal/10.18.28.203:9142, hostId=null, hashCode=6551c917): [io.netty.channel.ConnectTimeoutException: connection timed out: ip-10-18-28-203.us-west-2.compute.internal/10.18.28.203:9142], Node(endPoint=ip-10-18-8-110.us-west-2.compute.internal/10.18.8.110:9142, hostId=null, hashCode=36985f57): [io.netty.channel.ConnectTimeoutException: connection timed out: ip-10-18-8-110.us-west-2.compute.internal/10.18.8.110:9142], Node(endPoint=ip-10-18-7-47.us-west-2.compute.internal/10.18.7.47:9142, hostId=null, hashCode=8eab7e9): [io.netty.channel.ConnectTimeoutException: connection timed out: ip-10-18-7-47.us-west-2.compute.internal/10.18.7.47:9142]

cassandra.yaml properties

server_encryption_options:
    internode_encryption: none
    keystore: /etc/cassandra/conf/casskeystore
    keystore_password: changeit
    truststore: conf/.truststore
    truststore_password: cassandra

client_encryption_options:
    enabled: true
    optional: true
    keystore: /etc/cassandra/conf/casskeystore
    keystore_password: changeit