[英]Can not connect to mysql docker image connection refused
我剛剛將我的舊公司計算機更換為新計算機(MACOS),下載項目,現在我嘗試連接到 mysql docker 映像,但我總是得到
撥 tcp 127.0.0.1:3306: 連接: 連接被拒絕
在我的舊電腦上一切正常,但現在我遇到了這個問題。
我的 docker compose(未顯示所有內容):
version: "3"
services:
mysql:
image: mysql:5.6
ports:
- "3306:3306"
volumes:
- mysql-data:/var/lib/mysql
- ./docker-entrypoint-initdb.d:/docker-entrypoint-initdb.d
environment:
MYSQL_ROOT_PASSWORD: a
LANG: C.UTF-8
adminer:
image: adminer
ports:
- 8082:8080
nginx:
build: ../docker-shared/nginx
ports:
- 443:443
volumes:
- "./nginx_proxy_settings.conf:/etc/nginx/conf.d/nginx_proxy_settings.conf"
volumes:
mysql-data:
因此,如果我執行docker-compose up
一切正常,您可以查看 Adminer 正在處理數據的下一張圖像:
這是我連接到 mysql 的 Golang 代碼:
func main() {
dbConfig := mysql.NewConfig()
dbConfig.User = "root"
dbConfig.Passwd = "a"
dbConfig.Addr = "mysql"
dbConfig.DBName = "company_prod"
db, err := sql.Open("mysql", dbConfig.FormatDSN())
if err != nil {
panic(err)
}
defer db.Close()
}
你知道我做錯了什么嗎??
謝謝
問題是你的 go 代碼無法解析mysql
地址,因為它沒有部署在 compose 文件中。
要解決這個問題,您有兩種解決方案:
mysql
更改為localhost:3306
(我看到你編輯了你的 compose 並且端口被暴露了,所以你只需要在你的代碼中更改地址)對於第一個解決方案,您可以將一個簡單的 Go 應用程序構建到 Docker 鏡像中,如下所示:
# Build stage
FROM golang:alpine AS build-env
COPY . /go/src/your/project/path
WORKDIR /go/src/your/project/path
RUN apk update && \
apk upgrade && \
<install your deps here if needed>
# Install dep if needed
ENV DEP_VERSION="0.4.1"
RUN curl -L -s https://github.com/golang/dep/releases/download/v${DEP_VERSION}/dep-linux-amd64 -o $GOPATH/bin/dep
RUN chmod +x $GOPATH/bin/dep
RUN dep ensure
# Build your app
RUN go build -o myapp
# Final stage
FROM alpine
WORKDIR /app/myapp
COPY --from=build-env /go/src/your/project/path /app/myapp
ENTRYPOINT ["/app/myapp/myapp"]
然后將其添加到您的撰寫文件中:
version: "3"
services:
mysql:
image: mysql:5.6
ports:
- "3306:3306"
volumes:
- mysql-data:/var/lib/mysql
- ./docker-entrypoint-initdb.d:/docker-entrypoint-initdb.d
environment:
MYSQL_ROOT_PASSWORD: a
LANG: C.UTF-8
adminer:
image: adminer
ports:
- 8082:8080
myapp:
build: .
depends_on:
- mysql
nginx:
build: ../docker-shared/nginx
ports:
- 443:443
volumes:
- "./nginx_proxy_settings.conf:/etc/nginx/conf.d/nginx_proxy_settings.conf"
volumes:
mysql-data:
並將端口和傳輸添加到您的應用程序代碼中:
func main() {
dbConfig := mysql.NewConfig()
dbConfig.User = "root"
dbConfig.Passwd = "a"
dbConfig.Addr = "mysql:3306"
dbConfig.DBName = "websays_prod"
dbConfig.Net = "tcp"
db, err := sql.Open("mysql", dbConfig.FormatDSN())
if err != nil {
panic(err)
}
defer db.Close()
}
如果您不想 dockerize 應用程序,則第二種解決方案是將代碼更改為:
func main() {
dbConfig := mysql.NewConfig()
dbConfig.User = "root"
dbConfig.Passwd = "a"
dbConfig.Addr = "localhost:3306"
dbConfig.DBName = "websays_prod"
dbConfig.Net = "tcp"
db, err := sql.Open("mysql", dbConfig.FormatDSN())
if err != nil {
panic(err)
}
defer db.Close()
}
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.