英文:
Why go can't access port 8080 in docker
问题
所以我想在Cloud Run中部署我的简单Go后端。我使用Gin来处理路由。我的处理函数看起来像这样：
func main() {r := gin.Default()r.GET("/api/health", handlers.HealthCheckHandler())r.POST("/questions", handlers.CreateQuestionHandler(client))r.GET("/questions/:level", handlers.GetAllQuestionHandler(client))r.Run("0.0.0.0:8080")}
我尝试使用Docker构建它，并且成功了。我的Dockerfile如下所示：
FROM golang:1.20ENV GIN_MODE=releaseWORKDIR /app# 下载Go模块COPY go.mod go.sum ./RUN go mod downloadCOPY . .# 构建RUN go build -o /docker-apiEXPOSE 8080# 运行CMD ["/docker-api"]
所以我尝试在Google Cloud CLI中使用docker run运行它，看起来运行得很好：
docker run -p 8080:8080 gcr.io/matharc/math-arc-api[GIN-debug] [WARNING] Creating an Engine instance with the Logger and Recovery middleware already attached.[GIN-debug] [WARNING] Running in "debug" mode. Switch to "release" mode in production.- using env: export GIN_MODE=release- using code: gin.SetMode(gin.ReleaseMode)[GIN-debug] GET /api/health --> matharc.com/m/handlers.HealthCheckHandler.func1 (3 handlers)[GIN-debug] POST /questions --> matharc.com/m/handlers.CreateQuestionHandler.func1 (3 handlers)[GIN-debug] GET /questions/:level --> matharc.com/m/handlers.GetAllQuestionHandler.func1 (3 handlers)[GIN-debug] [WARNING] You trusted all proxies, this is NOT safe. We recommend you to set a value.Please check https://pkg.go.dev/github.com/gin-gonic/gin#readme-don-t-trust-all-proxies for details.[GIN-debug] Listening and serving HTTP on localhost:8080
但是当我尝试在端口8080上预览它时，我无法访问它：
我尝试只在Cloud Run中部署它，但毫不奇怪，它不起作用。我得到以下错误：
STARTUP HTTP probe failed 1 time consecutively for container "math-arc-api-1" on path "/api/health". The instance was not started.
我做错了什么？
英文:
So I want to deploy my simple Go backend in Cloud Run. I use Gin to handle the routing. My main function that handle it look like this:
func main() {r := gin.Default()r.GET("/api/health", handlers.HealthCheckHandler())r.POST("/questions", handlers.CreateQuestionHandler(client))r.GET("/questions/:level", handlers.GetAllQuestionHandler(client))r.Run("0.0.0.0:8080")}
I try to build it using docker and it success. My Dockerfile look like this:
FROM golang:1.20ENV GIN_MODE=releaseWORKDIR /app# Download Go modulesCOPY go.mod go.sum ./RUN go mod downloadCOPY . .# BuildRUN go build -o /docker-apiEXPOSE 8080# RunCMD ["/docker-api"]
So I try to run it with docker run in Google Cloud CLI, and it seems to run pretty fine:
docker run -p 8080:8080 gcr.io/matharc/math-arc-api[GIN-debug] [WARNING] Creating an Engine instance with the Logger and Recovery middleware already attached.[GIN-debug] [WARNING] Running in "debug" mode. Switch to "release" mode in production.- using env: export GIN_MODE=release- using code: gin.SetMode(gin.ReleaseMode)[GIN-debug] GET /api/health --> matharc.com/m/handlers.HealthCheckHandler.func1 (3 handlers)[GIN-debug] POST /questions --> matharc.com/m/handlers.CreateQuestionHandler.func1 (3 handlers)[GIN-debug] GET /questions/:level --> matharc.com/m/handlers.GetAllQuestionHandler.func1 (3 handlers)[GIN-debug] [WARNING] You trusted all proxies, this is NOT safe. We recommend you to set a value.Please check https://pkg.go.dev/github.com/gin-gonic/gin#readme-don-t-trust-all-proxies for details.[GIN-debug] Listening and serving HTTP on localhost:8080
But when I try to preview it on port 8080. I can't access it:
I try to just deploy it in Cloud Run, but to no surprise, it's not working. I get:
STARTUP HTTP probe failed 1 time consecutively for container "math-arc-api-1" on path "/api/health". The instance was not started.
What did I do wrong?
答案1
得分: -1
所以评论中的@Hans Kilian的答案是正确的。问题是因为我在代码中使用了localhost而不是0.0.0.0。我以为我已经将其更改为0.0.0.0，但在构建时似乎犯了一些错误。
英文:
So the answer from @Hans Kilian in the comment is the right one. The problem is because I use localhost instead of 0.0.0.0. I thought that I has changed it to 0.0.0.0 in the code but seems like I did some mistake when I built it.
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