How to solve "command find requires authentication" using Golang and MongoDriver - mongodb

Question

I need help to fix the error. I'm using IBM mongo services.
go version go1.13.6 darwin/amd64
mongo driver version 1.2.1
The connection is working, I can read and write but sometimes it returns
: command find requires authentication and command insert requires authentication
MONGO_DB_URI=mongodb://username:password:port,host/dbname?authSource=admin&replicaSet=replset&connect=direct&alias=default
Connect:
func ConnectDatabase() *mongo.Client {
clientOptions := options.Client().ApplyURI(os.Getenv("MONGO_DB_URI"))
ctx, _ := context.WithTimeout(context.Background(), 30*time.Second)
var err error
client, err = mongo.Connect(ctx, clientOptions)
if err != nil {
log.Fatal(err)
}
ctx, _ = context.WithTimeout(context.Background(), 10*time.Second)
err = client.Ping(ctx, nil)
if err != nil {
log.Fatal(err)
return nil
}
fmt.Println("Connected to MongoDB!")
return client
}
Read:
func FindAll(collectionName string, query bson.M) (*mongo.Cursor, error) {
collection := client.Database("dbname").Collection(collectionName)
singleResult, err := collection.Find(context.TODO(), query)
return singleResult, err
}
Read:
ctx, _ := context.WithTimeout(context.Background(), 20*time.Second)
cur, err := mongo.GetCollection("collection_name").Find(ctx, createQuery())
if err != nil {
log.Println(err.Error())
}
I'm using the same database and the same configurations at our another Python Project. No exceptions.

Answer 1

There is a difference between connecting to a DB and performing operations on the DB.
Mongo lets you connect without authentication because you have to be able to connect to be able to authenticate.
var cred options.Credential
cred.AuthSource = YourAuthSource
cred.Username = YourUserName
cred.Password = YourPassword
// set client options
clientOptions := options.Client().ApplyURI(os.Getenv("MONGO_DB_URI")).SetAuth(cred)
//... the rest of your code
Hope this helps.