英文:
Cannot connect to my containerized gRPC server
问题
我有一个具有给定文件夹结构的git仓库：
grpc-repo
|---grpc-client (:8083)
|---grpc-server (:9000)
|---docker-compose.yml
|---Dockerfile
|---Dockerfile2
现在，这个gRPC客户端-服务器项目正常无缝运行。
但是，我需要将这个项目容器化。
下面是我的docker-compose.yml文件：
version: "3.3"
services:
client:
container_name: grpc-client
build:
dockerfile: Dockerfile
context: .
volumes:
- .:/app
ports:
- 8083:8083
networks:
- my-network
server:
container_name: grpc-server
build:
dockerfile: Dockerfile2
context: .
volumes:
- .:/app
ports:
- 9000:9000
networks:
- my-network
networks:
my-network:
driver: bridge
将项目容器化后，我可以轻松连接到gRPC客户端，但是客户端无法连接到gRPC服务器。
它显示以下错误信息：
rpc error: code = Unavailable desc = connection error: desc = "transport: Error while dialing dial tcp :9000: connect: connection refused"
以下是我在我的golang代码中创建与服务器连接的方式：
conn, err := grpc.Dial(":9000", grpc.WithInsecure())
if err != nil {
log.Fatalf("could not connect: %s", err)
}
有人可以帮我看看我在这里做错了什么吗？提前感谢！
英文:
I have a git repo with the given folder structure
grpc-repo
|---grpc-client (:8083)
|---grpc-server (:9000)
|---docker-compose.yml
|---Dockerfile
|---Dockerfile2
Now, these gRPC client-server project is running seamless normally.
But then, I need to dockerize this project.
Given below is my docker-compose.yml
version: "3.3"
services:
client:
container_name: grpc-client
build:
dockerfile: Dockerfile
context: .
volumes:
- .:/app
ports:
- 8083:8083
networks:
- my-network
server:
container_name: grpc-server
build:
dockerfile: Dockerfile2
context: .
volumes:
- .:/app
ports:
- 9000:9000
networks:
- my-network
networks:
my-network:
driver: bridge
After dockerizing the project, I am easily able to connect to the gRPC client.. but the client is not able to connect to the gRPC server.
It says ...
rpc error: code = Unavailable desc = connection error: desc = \"transport: Error while dialing dial tcp :9000: connect: connection refused
This is how I am creating a connection to the server in my golang code
conn, err := grpc.Dial(":9000", grpc.WithInsecure())
if err != nil {
log.Fatalf("could not connect: %s", err)
}
Can anyone help me with what am I doing wrong here ?
Thanks in advance !
答案1
得分: 6
要从另一个容器访问在Docker容器中运行的gRPC，您需要使用DNS解析。
grpc.Dial("dns:///grpc-server:9000", grpc.WithInsecure())
其中grpc-server是您在container_name: grpc-server中声明的容器名称。
英文:
To access a gRPC running in a docker container from another container you have to use DNS resolution.
grpc.Dial("dns:///grpc-server:9000", grpc.WithInsecure())
where grpc-server is the container name you declared in container_name: grpc-server
通过集体智慧和协作来改善编程学习和解决问题的方式。致力于成为全球开发者共同参与的知识库，让每个人都能够通过互相帮助和分享经验来进步。
评论