在云服务器上自动化部署Golang应用程序的最小环境是什么

/usr/local

PATH

# 示例：安装Go 1.22.x
wget https://go.dev/dl/go1.22.4.linux-amd64.tar.gz
sudo tar -C /usr/local -xzf go1.22.4.linux-amd64.tar.gz
echo 'export PATH=$PATH:/usr/local/go/bin' >> ~/.profile # 或者 ~/.bashrc
source ~/.profile

git clone

git pull

#!/bin/bash

APP_NAME="my-golang-app"
REPO_DIR="/home/user/my-golang-app-repo"
SERVICE_NAME="my-golang-app.service" # Systemd service name

echo "Stopping existing service..."
sudo systemctl stop $SERVICE_NAME || true # 允许服务不存在时继续执行

echo "Updating code from Git..."
cd $REPO_DIR
git pull origin main # 假设主分支是main

echo "Building Go application..."
go mod tidy
go build -o $APP_NAME .

echo "Moving new binary to service path..."
sudo mv $APP_NAME /usr/local/bin/$APP_NAME

echo "Starting new service..."
sudo systemctl start $SERVICE_NAME
sudo systemctl status $SERVICE_NAME

echo "Deployment complete!"

ssh user@your_server "bash /path/to/remote_deploy_script.sh"

pprof

kubectl logs

kubectl describe

kubectl exec

systemd

systemd

.service

systemd

/etc/systemd/system/my-golang-app.service

[Unit]
Description=My Golang Application Service
After=network.target # 确保网络服务启动后再启动此服务

[Service]
User=your_username # 运行应用的系统用户，建议非root用户
Group=your_username # 运行应用的系统用户组
WorkingDirectory=/path/to/your/app/directory # 应用的根目录
ExecStart=/usr/local/bin/my-golang-app # 你的Go应用二进制文件的绝对路径
Restart=always # 关键：当应用退出时，systemd会尝试重启它
RestartSec=5s # 重启前等待5秒
StandardOutput=journal # 将标准输出和标准错误输出到journald
StandardError=journal
SyslogIdentifier=my-golang-app # 在日志中标识此服务
Environment="PORT=8080" # 可以设置环境变量

[Install]
WantedBy=multi-user.target # 在多用户模式下启动此服务

systemd

sudo systemctl daemon-reload # 重新加载systemd配置
sudo systemctl enable my-golang-app.service # 设置开机自启动
sudo systemctl start my-golang-app.service # 立即启动服务
sudo systemctl status my-golang-app.service # 查看服务状态

Restart=always

systemd

RestartSec=5s

systemd

journalctl -u my-golang-app.service

nohup

os.Getenv()

package main

import (
    "fmt"
    "os"
)

func main() {
    dbHost := os.Getenv("DB_HOST")
    dbPort := os.Getenv("DB_PORT")
    dbUser := os.Getenv("DB_USER")
    dbPass := os.Getenv("DB_PASSWORD")

    if dbHost == "" {
        dbHost = "localhost" // 提供默认值
    }
    // ... 使用这些变量连接数据库
    fmt.Printf("Connecting to DB: %s:%s as %s\n", dbHost, dbPort, dbUser)
}

systemd

# 在部署脚本中
export DB_HOST="your_db_host"
export DB_PORT="5432"
export DB_USER="app_user"
export DB_PASSWORD="super_secret_password"
./my-golang-app # 然后启动应用

# 或者在systemd服务文件中 (如副标题2所示)