Question

I got this error when trying to connect to my RDS Postgres Endpoint

dial tcp 172.xx.xx.x:5432: i/o timeout panic: runtime error: invalid memory address or nil pointer dereference [signal SIGSEGV: segmentation violation code=0x1 addr=0x98 pc=0x1600d16]

Seems like there's some problem connecting to the endpoint

.Env file

DB_HOST=dbname.asdasddsa.ap-southeast-1.rds.amazonaws.com
DB_PORT=5432
DB_USER=username
DB_NAME=dbname
DB_PASSWORD=password

My database.go file

func InitDB() *gorm.DB {
    loadEnv() // For environment variables
    psqlInfo := fmt.Sprintf("host=%s user=%s dbname=%s sslmode=disable password=%s",
        os.Getenv("DB_HOST"),
        os.Getenv("DB_USER"),
        os.Getenv("DB_NAME"),
        os.Getenv("DB_PASSWORD"),
    )

    db, err := gorm.Open("postgres", psqlInfo)
    if err != nil {
        fmt.Println(err)
        return nil
    }
    fmt.Println("Connected to the Database")
    DB = db
    return DB
}

Do i need to configure anything in my RDS AWS? I followed this article

https://aws.amazon.com/getting-started/tutorials/create-connect-postgresql-db/

and followed the exact steps for the configuration

Regards,

Answer 1

我正在使用此功能连接到RDS上的postgres数据库

package database

import (
    "fmt"

    "github.com/jinzhu/gorm"
    config "github.com/spf13/viper"
)

func Connect() (*gorm.DB, error) {
    return gorm.Open(
        "postgres",
        fmt.Sprintf(
            "host=%s port=%s user=%s dbname=%s password=%s",
            config.GetString("postgres.host"),
            config.GetString("postgres.port"),
            config.GetString("postgres.user"),
            config.GetString("postgres.dbname"),
            config.GetString("postgres.password"),              
        ),
    )
}

在运行它之前，请检查您是否有权访问RDS数据库。您可以在安全组规则下从AWS控制台-> RDS->数据库->-> [向下滚动]检查是否有权访问数据库您可以查看是否已添加对安全组的访问权限以从网络访问数据库。

您可以在此处了解有关安全组的更多信息 https://docs.aws.amazon.com/vpc/latest/userguide/VPC_SecurityGroups.html#VPCSecurityGroups

Cannot connect to RDS Postgres using Golang Gorm

1 个答案: