2 回答
TA贡献1798条经验 获得超3个赞
MongoDB 版本可以通过运行命令获取,具体为buildInfocommand。
使用 shell,你可以这样做:
db.runCommand({buildInfo: 1})
结果是一个文档,其version属性包含服务器版本,例如:
{
"version" : "5.0.6",
...
}
要使用官方驱动程序运行命令,请使用Database.RunCommand()方法。
例如:
// Connect to MongoDB and acquire a Database:
ctx := context.Background()
opts := options.Client().ApplyURI("mongodb://localhost")
client, err := mongo.Connect(ctx, opts)
if err != nil {
log.Fatalf("Failed to connect to db: %v", err)
}
defer client.Disconnect(ctx)
db := client.Database("your-db-name")
// And now run the buildInfo command:
buildInfoCmd := bson.D{bson.E{Key: "buildInfo", Value: 1}}
var buildInfoDoc bson.M
if err := db.RunCommand(ctx, buildInfoCmd).Decode(&buildInfoDoc); err != nil {
log.Printf("Failed to run buildInfo command: %v", err)
return
}
log.Println("Database version:", buildInfoDoc["version"])
TA贡献1824条经验 获得超8个赞
我们需要使用dbStats命令来获取元数据。
host := "<your-host-name>:<pot-number>"
url := "mongodb://" + host
credential := options.Credential{
AuthSource: "authentication-database",
Username: "username",
Password: "password",
}
clientOpts := options.Client().ApplyURI(url).SetAuth(credential)
ctx := context.Background()
client, err := mongo.Connect(ctx, clientOpts)
if err != nil {
log.Fatal("Failed to connect to db : %w", err)
}
defer client.Disconnect(ctx)
if err := client.Ping(context.TODO(), readpref.Primary()); err != nil {
panic(err)
}
fmt.Println("Successfully connected and pinged.")
db := client.Database("your-database-name")
dbStatsCmd := bson.D{bson.E{Key: "dbStats", Value: 1}}
var dbStatsDoc bson.M
if err := db.RunCommand(ctx, dbStatsCmd).Decode(&dbStatsDoc); err != nil {
log.Printf("Failed to run dbStats command: %v", err)
return
}
log.Println("\nTotal Used Size in MB: ", dbStatsDoc["totalSize"].(float64) / 1048576 , " ,Total Free size in MB (part of total used size): ", dbStatsDoc["totalFreeStorageSize"].(float64)/1048576)
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