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With the continuous updating of Internet technology, golang language has become a popular language and is widely used because of its high efficiency, stability, cross-platform and other characteristics. Although golang development is simple and easy to get started, the deployment process is relatively complicated and requires careful study. This article will explain the golang deployment process from the following aspects to help readers better understand golang deployment.

1. Compile golang applications

The first step in deploying golang applications is compilation. Golang is a statically compiled language, which means your application will be fully compiled into a binary file and does not need to rely on external libraries or runtime environments. This reduces dependency and component risks and enhances portability.

Before compiling the program, you need to install golang and configure the relevant environment. Open the terminal and enter the following command to ensure that the installation is completed.

go version

The above command should output the Golang version number being used.

Generally, for golang web service deployment, the listening port number needs to be specified in the code. In the code root directory, open a terminal and enter the following command to compile the project:

go build

After compilation, an executable file will be generated, which is the program we need to deploy.

2. Build the docker image

After building the application, we need to put it into a container before deploying it. Since different server environments often have different problems, the use of container technology can package applications and environments together, thereby solving the differences between different environments. This section will introduce how to use Docker to build an image of a golang application to facilitate subsequent deployment.

The function of the Dockerfile file is to define the running environment of the application in the Docker container. At the same time, we can also specify the code that needs to be copied into the container.

FROM golang:1.16-alpine

# 设置代码目录
ENV APP_PATH /go/src/golang_deploy
WORKDIR $APP_PATH

# 拷贝代码到容器内
COPY . $APP_PATH

# 编译应用程序
RUN go build

# 暴露端口号
EXPOSE 8000

# 定义运行命令
ENTRYPOINT ["./golang_deploy"]

In the above Dockerfile file, we start building our own container from the official golang image 1.16-alpine. Then we specify the directory of the application code, copy the code inside the container and compile the code. Finally, we specify the port number that the container exposes to the outside world, and define the startup command for the application in the container.

Before building the Docker image, we need to install Docker and start the Docker service. Use the following command to build the Dockerfile file. This command will also mark the image with golang_deploy when building.

docker build -t golang_deploy .

The above command will build a customized Golang running image based on the Dockerfile file, and the required dependencies and code will be packaged into the image.

3. Deploy golang application

After the Docker image is built, we can deploy it to the server, which means that the container can run our application. Docker's powerful portability allows applications to run on any platform that supports Docker.

Use the following command to start the Docker container of the golang application.

docker run -d -p 8000:8000 golang_deploy

The above command will start a new golang_deploy container in the foreground (-d parameter means "run in the background") and expose the container's port 8000 to the host port 8000.

4. Verification of missing links

Although automated deployment is convenient, there are always some small problems that need to be solved manually, which are often caused by some missed links. Below are some common questions for us to verify.

Check whether the application is running in the container:

docker ps

The above command is used to list the running containers, and you should be able to see the container you just deployed.

Check whether the application is listening on the port exposed by the Docker container (8000):

 docker port <CONTAINER ID>

The above command can query the port mapping of the specified container, where should be your first The container ID output by the docker ps command.

Finally, use a browser or curl to verify that the golang application is actually running:

curl http://<IP>:8000

In this command, is the IP address of your server.

After the above steps, we successfully deployed the golang application. I hope that this article can give everyone a deeper understanding of the deployment of golang applications.

The above is the detailed content of golang deployment process. For more information, please follow other related articles on the PHP Chinese website!

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