speed% /usr/local/m/versions/4.2/mongo  --ssl --sslCAFile  /home/w/apps/ruby-driver/spec/support/certificates/ca.crt --sslPEMKeyFile /home/w/apps/ruby-driver/spec/support/certificates/client-x509.pem 
2019-10-14T23:28:29.195-0400 W  CONTROL  [main] Option: ssl is deprecated. Please use tls instead.
2019-10-14T23:28:29.195-0400 W  CONTROL  [main] Option: sslPEMKeyFile is deprecated. Please use tlsCertificateKeyFile instead.
2019-10-14T23:28:29.195-0400 W  CONTROL  [main] Option: sslCAFile is deprecated. Please use tlsCAFile instead.
MongoDB shell version v4.2.1-rc0-7-g3135b6a
connecting to: mongodb://127.0.0.1:27017/?compressors=disabled&gssapiServiceName=mongodb
Implicit session: session { "id" : UUID("f1eb660c-31ea-440a-a74d-b8070d34655e") }
MongoDB server version: 4.2.1-rc0-7-g3135b6a
MongoDB Enterprise > db.serverStatus()
{
	"ok" : 0,
	"errmsg" : "not authorized on admin to execute command { serverStatus: 1.0, lsid: { id: UUID(\"f1eb660c-31ea-440a-a74d-b8070d34655e\") }, $db: \"admin\" }",
	"code" : 13,
	"codeName" : "Unauthorized"
}
MongoDB Enterprise > db.createUser()
2019-10-14T23:28:43.907-0400 E  QUERY    [js] uncaught exception: TypeError: userObj is undefined :
DB.prototype.createUser@src/mongo/shell/db.js:1336:9
@(shell):1:1
MongoDB Enterprise > db.createUser()
2019-10-14T23:28:58.226-0400 E  QUERY    [js] uncaught exception: TypeError: userObj is undefined :
DB.prototype.createUser@src/mongo/shell/db.js:1336:9
@(shell):1:1
MongoDB Enterprise > db.createUser({})
2019-10-14T23:29:04.637-0400 E  QUERY    [js] uncaught exception: Error: no 'user' field provided to 'createUser' function :
DB.prototype.createUser@src/mongo/shell/db.js:1338:15
@(shell):1:1
MongoDB Enterprise > db.createUser({user:'foo'})
2019-10-14T23:29:10.962-0400 E  QUERY    [js] uncaught exception: Error: couldn't add user: not authorized on test to execute command { createUser: "foo", writeConcern: { w: "majority", wtimeout: 600000.0 }, lsid: { id: UUID("f1eb660c-31ea-440a-a74d-b8070d34655e") }, $db: "test" } :
_getErrorWithCode@src/mongo/shell/utils.js:25:13
DB.prototype.createUser@src/mongo/shell/db.js:1370:11
@(shell):1:1
MongoDB Enterprise > db.serverStatus()