我有兩個 Go 語言的應用程式。user_management 應用程式，我先運行 (docker-compose up --build)，然后運行 ??(docker-compose up --build) 運動應用程式。Sport_app 依賴于 user_management 應用程式。
Sport_app Dockerfile 檔案如下。
FROM golang:alpine
RUN apk update && apk upgrade && apk add --no-cache bash git openssh curl
WORKDIR /go-sports-entities-hierarchy
COPY . /go-sports-entities-hierarchy/
RUN rm -rf /go-sports-entities-hierarchy/.env
RUN go mod download
RUN chmod x /go-sports-entities-hierarchy/scripts/*
RUN ./scripts/build.sh
ADD https://github.com/ufoscout/docker-compose-wait/releases/download/2.2.1/wait /wait
RUN chmod x /wait
ENV GIN_MODE="debug" \
GQL_SERVER_HOST="localhost" \
GQL_SERVER_PORT=7777 \
ALLOWED_ORIGINS=* \
USER_MANAGEMENT_SERVER_URL="http://localhost:8080/user/me" \
# GQLGen config
GQL_SERVER_GRAPHQL_PATH="graphql" \
GQL_SERVER_GRAPHQL_PLAYGROUND_ENABLED=true \
GQL_SERVER_GRAPHQL_PLAYGROUND_PATH="playground" \
# Export necessary port
EXPOSE 7777
CMD /wait && ./scripts/run.sh
Sport_app docker-compose.yml 檔案如下。
version: '3'
volumes:
postgres_data:
driver: local
services:
go-sports-entities-hierarchy:
restart: always
build:
dockerfile: Dockerfile
context: .
environment:
WAIT_HOSTS: postgres:5432
# Web framework config
GIN_MODE: debug
GQL_SERVER_HOST: go-sports-entities-hierarchy
GQL_SERVER_PORT: 7777
ALLOWED_ORIGINS: "*"
USER_MANAGEMENT_SERVER_URL: http://localhost:8080/user/me
# GQLGen config
GQL_SERVER_GRAPHQL_PATH: graphql
GQL_SERVER_GRAPHQL_PLAYGROUND_ENABLED: "true"
GQL_SERVER_GRAPHQL_PLAYGROUND_PATH: playground
ports:
- 7777:7777
depends_on:
- postgres
- redisearch
go-sports-events-workflow:
restart: always
build:
dockerfile: Dockerfile
context: .
environment:
WAIT_HOSTS: postgres:5432
# Web framework config
GIN_MODE: debug
GQL_SERVER_HOST: go-sports-events-workflow
GQL_SERVER_PORT: 7778
ALLOWED_ORIGINS: "*"
# GQLGen config
GQL_SERVER_GRAPHQL_PATH: graphql
GQL_SERVER_GRAPHQL_PLAYGROUND_ENABLED: "true"
GQL_SERVER_GRAPHQL_PLAYGROUND_PATH: playground
depends_on:
- postgres
- redisearch
- go-sports-entities-hierarchy
user_management 應用程式 Dockerfile 如下：
FROM golang:alpine
RUN apk update && apk add --no-cache git ca-certificates && update-ca-certificates
# Set necessary environmet variables needed for our image
ENV GO111MODULE=on \
CGO_ENABLED=0 \
GOOS=linux \
GOARCH=amd64
# Move to working directory /build
WORKDIR /build
# Copy and download dependency using go mod
COPY go.mod .
COPY go.sum .
RUN go mod download
# Copy the code into the container
COPY . .
# Build the application
RUN go build -o main .
# Move to /dist directory as the place for resulting binary folder
WORKDIR /dist
# Copy binary from build to main folder
RUN cp -r /build/html .
RUN cp /build/main .
# Environment Variables
ENV DB_HOST="127.0.0.1" \
APP_PROTOCOL="http" \
APP_HOST="localhost" \
APP_PORT=8080 \
ALLOWED_ORIGINS="*"
# Export necessary port
EXPOSE 8080
ADD https://github.com/ufoscout/docker-compose-wait/releases/download/2.2.1/wait /wait
RUN chmod x /wait
# Command to run when starting the container
CMD /wait && /dist/main
user_management app docker-compose.yml 檔案如下：
version: '3'
volumes:
postgres_data:
driver: local
services:
postgres:
image: postgres
volumes:
- postgres_data:/var/lib/postgresql/data
ports:
- 5432:5432
go-user-management:
restart: always
build:
dockerfile: Dockerfile
context: .
environment:
# Postgres Details
DB_PORT: 5432
# APP details
APP_PROTOCOL: http
APP_HOST: localhost
APP_PORT: 8080
# System Configuration Details
ALLOWED_ORIGINS: "*"
ports:
- 8080:8080
depends_on:
- postgres
在 sport_app 我寫下面的代碼并得到錯誤：
client := resty.New()
resp, err := client.R().SetHeader("Content-Type", "application/json").SetHeader("Authorization", "Bearer " token).Get("http://localhost:8080/user/me")
錯誤是：Get "http://localhost:8080/user/me": dial tcp 127.0.0.1:8080: connect: connection denied:" 這個API(http://localhost:8080/user/me)是寫在user_management 應用程式正在運行，我與郵遞員核對。我已經閱讀了這個問題的答案，但無法解決我的問題。我是 docker 新手，請幫忙。
uj5u.com熱心網友回復：
為了在多個docker-compose客戶端之間進行通信，您需要確保要相互通信的容器位于同一網路上。
例如，（為簡潔起見編輯）這里你有一個 docker-compose.yml
# sport_app docker-compose.yml
version: '3'
services:
go-sports-entities-hierarchy:
...
networks:
- some-net
go-sports-events-workflow
...
networks:
- some-net
networks:
some-net:
driver: bridge
和另外一個 docker-compose.yml
# user_management app docker-compose.yml
version: '3'
services:
postgres:
...
networks:
- some-net
go-user-management
...
networks:
- some-net
networks:
some-net:
external: true
注意：您的應用程式網路的名稱基于 ，該名稱基于project name其所在目錄的名稱，在本例user_中添加了前綴。
然后他們可以使用服務名稱相互交談，即go-user-management，等等。
您可以在運行docker-compose up --build命令后運行命令docker network ls查看它，然后docker network inspect bridge，等等。
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標籤：码头工人 去 docker-compose 文件