12/27/2022 0 Comments Mongodb compass create new databaseFor example, there is a the “read role” which only allows read only access to databases and then there is the “readwrite” role which provides read and write access to the database, which means that the user can issue the insert, delete and update commands on collections in that database. There is a whole list of role available in MongoDB. Managing usersįirst understand the roles which you need to define. The output shows that a user called “Employeeadmin” was created and that user has privileges only on the “Employee” database. If the command is executed successfully, the following Output will be shown: The db parameter specifies the database to which the user should have administrative privileges on. This role allows the user to have administrative privileges only to the database specified in the db option. The second step is to assign a role for the user which in this case since it needs to be a database administrator is assigned to the “userAdmin” role.The first step is to specify the “username” and “password” which needs to be created.The following example shows how this can be done If err = cursor.All(context.To create a user who will manage a single database, we can use the same command as mentioned above but we need to use the “userAdmin” option only. Let’s see how you can use it: if err := client.Ping(context.TODO(), readpref.Primary()) err != nil ) The MongoDB client provides a Ping() method to tell you if a MongoDB database has been found and connected. The mongo.Connect documentation contains more advanced configurations for creating a MongoDB client instance, including authentication. If the err value is not empty, it means there was an error (wrong credentials or connecting to a non-existent database), and you should terminate the application using panic(). Any time you make requests to a server (the database, in this case), you should create a context using context.TODO() that the server will accept.įinally, you checked errors in the database connection using the err variable returned from calling mongo.Connect(). Then, you created a client instance using the mongo.Connect() function and passed a Go context to it. Here, you imported the mongo, mongo/options, and mongo/readpref modules from the Go driver into your application to connect to the local database. "go./mongo-driver/mongo/readpref"Ĭlient, err := mongo.Connect(context.TODO(), options.Client().ApplyURI("mongodb://localhost:27017")) Import the Go driver package into your application, then create a MongoDB client instance for a database on port 27017 (MongoDB’s default port).Ĭreate a file named main.go and save the following code in it: In the terminal, type the following: go get go./mongo-driver/mongo Install the mongo-go-driver package in your project. Step 2: Install the Go driver for MongoDB You are free to use any name for your package: go mod init mongo-with-golang Step 1: Set up your development environmentĬreate a new Go project in your text editor or IDE and initialize your go.mod file. It provides functionalities that allow a Go application to connect to a MongoDB database and execute queries. The first step is to install mongo-go-driver, the official Go driver for MongoDB. A Go development environment (e.g., text editor, IDE).To follow and understand this tutorial, you will need the following: In this tutorial, I’ll teach you how to integrate MongoDB into Go applications seamlessly, by showing how to perform CRUD operations using the official Go driver for MongoDB, and providing code samples along the way. The demand for applications that use NoSQL-based databases is on the rise, with many developers looking to learn how to integrate databases like MongoDB into applications built with their favorite language and frameworks. Solomon Esenyi Follow Python/Golang developer and Technical Writer with a passion for open-source, cryptography, and serverless technologies.
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