Heroku에서 Go 앱 배포가 성공했는데 빌드 성공에도 불구하고 애플리케이션에 '애플리케이션 오류'가 표시되는 이유는 무엇입니까?

Heroku에 golang 앱 배포: 빌드가 성공했지만 애플리케이션에 오류가 표시됨

문제

godep 지원을 사용하여 Heroku에 Go 애플리케이션을 배포할 때 빌드는 성공했지만 엔드포인트에 액세스하면 "애플리케이션 오류"가 발생합니다.

코드 및 로그

애플리케이션에서 사용되는 코드는 다음과 같습니다.

import (
    "log"
    "fmt"
    "net/http"
    "os"

    "github.com/gorilla/mux"
    "github.com/gorilla/context"

    "gopkg.in/paytm/grace.v1"
)

func main() {
    log.Println("$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ CHIT STARTED $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$")
    log.Println("$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$")

    muxRouter := mux.NewRouter()

    muxRouter.HandleFunc("/", Articles)
    http.Handle("/", muxRouter)

    port := os.Getenv("PORT")
    if port == "" {
        port = "9000" // Default port if not specified
    }

    err := grace.Serve(":" + port, context.ClearHandler(http.DefaultServeMux))
    if err != nil {
        log.Println("[ERROR GRACEFUL]", err)
        os.Exit(1)
    }

    os.Exit(0)
}

func Articles(w http.ResponseWriter, r *http.Request) {
    // vars := mux.Vars(r)
    w.WriteHeader(http.StatusOK)
    fmt.Fprintf(w, "Hello")
    // r.Close = true
    // w.Header().Set("Content-Type", "application/json")
    // w.Header().Set("Access-Control-Allow-Origin", "*")

    /*if r.Method == "OPTIONS" {
        w.WriteHeader(http.StatusOK)
        return
    }

    if err := fn(w, r); err != nil {
        log.Println(err)
        apiObject := ConstructAPIError(http.StatusInternalServerError, ErrGeneral, SysMsgErrGeneral, MsgErrGeneral)
        SendAPIObject(w, apiObject)
        return
    }*/
}

배포 중 Heroku 로그는 다음과 같습니다.

-----> Go app detected
-----> Fetching jq... done
-----> Fetching stdlib.sh.v8... done
-----> Checking Godeps/Godeps.json file.
-----> New Go Version, clearing old cache
-----> Installing go1.12.6
-----> Fetching go1.12.6.linux-amd64.tar.gz... done
-----> Running: go install -v -tags heroku ./... 
bitbucket.org/michaelchandrag/chit/pkg
bitbucket.org/michaelchandrag/chit/vendor/github.com/gorilla/context
bitbucket.org/michaelchandrag/chit/vendor/github.com/gorilla/mux
bitbucket.org/michaelchandrag/chit/vendor/gopkg.in/tylerb/graceful.v1
bitbucket.org/michaelchandrag/chit/vendor/gopkg.in/paytm/grace.v1
bitbucket.org/michaelchandrag/chit/pkg/util
bitbucket.org/michaelchandrag/chit

       Installed the following binaries:
            ./bin/chit
-----> Discovering process types
       Procfile declares types -> web
-----> Compressing...
       Done: 7.5M
-----> Launching...
       Released v3
       https://michaelchandrag-project.herokuapp.com/ deployed to Heroku

액세스 전후의 애플리케이션 로그 끝점은 다음과 같습니다.

2:47.954106+00:00 heroku[web.1]: Starting process with command `chit`
2019-07-08T05:02:49.413453+00:00 app[web.1]: 2019/07/08 05:02:49 $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ CHIT STARTED $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
2019-07-08T05:02:49.413476+00:00 app[web.1]: 2019/07/08 05:02:49 $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
2019-07-08T05:02:49.413647+00:00 app[web.1]: 2019/07/08 05:02:49 starting serve on  :9000
2019-07-08T05:03:48.131507+00:00 heroku[web.1]: Error R10 (Boot timeout) -> Web process failed to bind to $PORT within 60 seconds of launch
2019-07-08T05:03:48.131595+00:00 heroku[web.1]: Stopping process with SIGKILL
2019-07-08T05:03:48.214979+00:00 heroku[web.1]: State changed from starting to crashed
2019-07-08T05:03:48.193205+00:00 heroku[web.1]: Process exited with status 137
2019-07-08T10:38:59.721224+00:00 heroku[web.1]: State changed from crashed to starting
2019-07-08T10:39:00.359017+00:00 heroku[web.1]: Starting process with command `chit`
2019-07-08T10:39:02.232435+00:00 app[web.1]: 2019/07/08 10:39:02 $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ CHIT STARTED $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
2019-07-08T10:39:02.232458+00:00 app[web.1]: 2019/07/08 10:39:02 $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
2019-07-08T10:39:02.232583+00:00 app[web.1]: 2019/07/08 10:39:02 starting serve on  :9000
2019-07-08T10:40:00.462841+00:00 heroku[web.1]: Error R10 (Boot timeout) -> Web process failed to bind to $PORT within 60 seconds of launch
2019-07-08T10:40:00.462974+00:00 heroku[web.1]: Stopping process with SIGKILL
2019-07-08T10:40:00.555959+00:00 heroku[web.1]: Process exited with status 137
2019-07-08T10:40:00.573427+00:00 heroku[web.1]: State changed from starting to crashed

해결 방법

응용 프로그램이 시작되지만 지정된 포트에 바인딩되지 않아 종료됩니다. 이는 Heroku 로그 메시지에서 분명하게 드러납니다.

2019-07-08T05:03:48.131507+00:00 heroku[web.1]: Error R10 (Boot timeout) -> Web process failed to bind to $PORT within 60 seconds of launch

이 문제를 해결하려면 웹 서버가 PORT 환경 변수에 지정된 포트에 바인딩되어야 합니다. Heroku에서 HTTP 서버는 Heroku 게이트웨이를 통해 기본 HTTP 및 HTTPS 포트에서 공개적으로 사용할 수 있습니다.

따라서 애플리케이션은 :9000 대신 지정된 포트에 바인딩되어야 합니다.

위 내용은 Heroku에서 Go 앱 배포가 성공했는데 빌드 성공에도 불구하고 애플리케이션에 '애플리케이션 오류'가 표시되는 이유는 무엇입니까?의 상세 내용입니다. 자세한 내용은 PHP 중국어 웹사이트의 기타 관련 기사를 참조하세요!