How to connect mongodb in go using atlas?

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Question content

I am experiencing a server selection timeout issue when connecting to mongodb. Any help would be greatly appreciated.

selection error: server selection timeout, current topology: { type:
replicasetnoprimary, servers: [{ addr:
ac-pjyudwq-shard-00-01.1bnb2bm.mongodb.net:27017, type: unknown, last
error: dial tcp 3.6.207.111:27017: i/o timeout }, { addr:
ac-pjyudwq-shard-00-00.1bnb2bm.mongodb.net:27017, type: unknown, last
error: dial tcp 3.7.150.83:27017: i/o timeout }, { addr:
ac-pjyudwq-shard-00-02.1bnb2bm.mongodb.net:27017, type: unknown, last
error: dial tcp 3.7.137.42:27017: i/o timeout }, ] } exit status 1

The code I used to connect

const MONGOURL = "mongodb+srv://sai:[email protected]/?retryWrites=true&w=majority"

var collection *mongo.Collection

func init() {
    fmt.Println("in the init function") var databasename string = "GOAPI"
    var collectionname string = "Movies"
    client, err: = mongo.Connect(context.TODO(), options.Client().ApplyURI(MONGOURL)) if err != nil {
        fmt.Println("unable to get mongo connection ") log.Fatal(err)
    }
    collection = ( * mongo.Collection)(client.Database(databasename).Collection(collectionname)) fmt.Println("sucessfully collection is created ") doc: = Movie {
        Name: "rrr",
        Watched: false,
        Rating: 9,
        Id: "12121"
    }
    result, err: = collection.InsertOne(context.Background(), doc) if err != nil {
        log.Fatal("hey unable to insert one ", err)
    }
    fmt.Println("sucessfully added : ", result.InsertedID)

    // mongo.Connect()`your text`
}

Workaround

I am hosting my test atlas cluster on aws, so I would like to have similar credential management to the aws process. From the aws credentials page:

The default provider chain looks for credentials in the following order:

1. Environment variables.
2. Shared credentials file.
3. If your application is running on an amazon ec2 instance, the iam role for amazon ec2.

So I want to implement a verifiable environment for a simple login for my atlas example. The code below assumes that the following lines

have been issued on the command line

export mongo_pw='<Your atlas administrator user password>'

The following procedure will then verify your connection

package main

import (
    "context"
    "fmt"
    "os"

    "go.mongodb.org/mongo-driver/mongo"
    "go.mongodb.org/mongo-driver/mongo/options"
)

var username = "<username>"
var host1 = "<atlas host>"  // of the form foo.mongodb.net

func main() {

    ctx := context.TODO()

    pw, ok := os.LookupEnv("MONGO_PW")
    if !ok {
        fmt.Println("error: unable to find MONGO_PW in the environment")
        os.Exit(1)
    }
    mongoURI := fmt.Sprintf("mongodb+srv://%s:%s@%s", username, pw, host1)
    fmt.Println("connection string is:", mongoURI)

    // Set client options and connect
    clientOptions := options.Client().ApplyURI(mongoURI)
    client, err := mongo.Connect(ctx, clientOptions)
    if err != nil {
        fmt.Println(err)
        os.Exit(1)
    }

    err = client.Ping(ctx, nil)
    if err != nil {
        fmt.Println(err)
        os.Exit(1)
    }

    fmt.Println("Connected to MongoDB!")
}

From here, the rest of the tutorial linked in my original question proceeds smoothly.

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