CNs are important!!! -days 3650

Make PEM containig a public key certificate and its associated private key

openssl req -newkey rsa:2048 -new -x509 -days 3650 -nodes -subj '/C=US/ST=Massachusetts/L=Bedford/O=Personal/OU=Personal/[email protected]/CN=localhost' -out mongodb-cert.crt -keyout mongodb-cert.key

cat mongodb-cert.key mongodb-cert.crt > mongodb.pem

cp mongodb-cert.crt mongodb-ca.crt

Edit /etc/mongod.conf, network interfaces section

# network interfaces
net:
  port: 27017
  bindIp: 127.0.0.1
  ssl:
    mode: allowSSL
    PEMKeyFile: /etc/ssl/mongodb.pem
    CAFile: /etc/ssl/mongodb-cert.crt

Check for startup config errors

sudo mongod --config /etc/mongod.conf

Restart mongo

sudo service mongod restart

Test-connect

mongo --ssl --sslAllowInvalidHostnames --sslCAFile mongodb-ca.crt --sslPEMKeyFile /etc/ssl/mongodb.pem

NodeJs, mongo connection options

{ 
	ssl: true,
	sslValidate: true,
	sslKey: fs.readFileSync('/etc/ssl/mongodb.pem'),
	sslCert: fs.readFileSync('/etc/ssl/mongodb-cert.crt'),
	sslCA: fs.readFileSync('/etc/ssl/mongodb-ca.crt')
}