Following this guide: https://docs.mongodb.com/manual/appendix/security/appendixA-openssl-ca/
$ mongod --config mongod.yaml
4.2 Mongo or greater
$ mongo --tls --host tyk-mongo --tlsCertificateKeyFile test-client.pem --tlsCAFile test-ca.pem
Otherwise
$ mongo --ssl --host tyk-mongo --sslPEMKeyFile test-client.pem --sslCAFile test-ca.pem