Discuss the method of Golang system deployment

In recent years, Golang has become one of the most popular programming languages, mainly due to its efficiency and excellent concurrency performance. With the popularity of Golang, many enterprises and developers are paying more and more attention to how to deploy Golang systems. In this article, we will discuss the methods and precautions for Golang system deployment.

1. Preparation work

Before deploying the Golang system, you first need to prepare the following parts:

(1) Server: Before deploying the Golang system Before system deployment, there needs to be a server that can provide services. When choosing a server, you need to consider factors such as the system you are running and the configuration of the server.

(2) Golang environment: Since Golang is a compiled language, the corresponding version of the Golang environment needs to be installed on the server in advance. This process can be installed through the installation package provided on the official website or using terminal commands on the Linux system.

(3) Code: To deploy the Golang system, of course you need the corresponding Golang code, which can be managed through version control tools such as Git, SVN, etc.

2. Compile Golang code

After preparing all the above work, we need to compile the Golang code into a binary executable file. Through compilation, you can reduce your dependence on the Golang environment and copy the same files on multiple servers. You only need to copy the executable file.

For a Golang project, if you are using the go mod management package, you only need to enter the project directory and use the following command to compile:

go build -o main

This command will generate a name in the current directory is the executable file of main.

If you are not using go mod to manage the package, you can use the following command:

go build -o main main.go

In this way, you can compile the code into a binary executable file named main.

3. Deploy the executable file

When we have an executable file, we can start system deployment.

(1) Copy the file to the server

First you need to copy the binary file to the server. Files can be transferred through tools such as SFTP, or files can be copied through the scp command:

scp main user@remote_host:/remote/dir/

In this example, copy the executable file named main to the /remote/dir/ directory of the remote server.

(2) Run the executable file

Next, execute the executable file in the server, the command is as follows:

./main

This command will start the Golang program and run it in the background , and the corresponding log information will be output and the specified port will be monitored.

(3) Use supervisor management

Although we can complete deployment using the above method, to make our system more robust and easy to maintain, using supervisor for management is a very good choice.

Supervisor is an open source process management tool that can automatically start, automatically restart, and reside in memory for one or more processes.

First, you need to install the supervisor in the server. Use the following command to complete:

sudo apt-get install supervisor

After the installation is complete, we need to create a supervisor configuration file.

Create a file named main.conf in the /etc/supervisor/conf.d/ directory with the following content:

[program: main]
command=/path/to/main
autostart=true
autorestart=true
redirect_stderr=true
stdout_logfile=/var/log/main.log

This file defines a process named main. Includes information such as startup commands, restarts, and output.

Run the following command to update the configuration and start the supervisor:

sudo supervisorctl reread
sudo supervisorctl update

This command will start the supervisor and manage the process named main, and output the corresponding log information.

Under supervisor management, if there is a problem with the started process, it can be automatically restarted, and when a problem occurs, it can be easily debugged.

4. Frequently Asked Questions and Precautions

When deploying the Golang system, you also need to pay attention to the following common issues:

(1) Port is occupied : When running, you need to pay attention to whether the currently used port is occupied. If the port is occupied, you need to change the port number.

(2) Version compatibility: In different environments, you need to ensure that the Golang version used is the same for the normal operation of the program.

(3) Log output: Logs need to be output in the program so that we can understand the running status of the program at any time and facilitate debugging.

Summary

Although Golang system deployment seems simple, there are many details that need attention. Only with careful preparation and prior planning can the system be efficient, stable, and robust. of operation. Through the methods and precautions introduced in this article, Golang developers can easily complete system deployment and improve development efficiency.

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