Nginx平滑升级(不停服务)的完整流程

[root@host nginx]# ./sbin/nginx -V
nginx version: nginx/1.21.6
built by gcc 4.8.5 20150623 (Red Hat 4.8.5-36) (GCC)
configure arguments:

# 升级完成后
/usr/local/nginx/sbin/nginx -s reload

cd /home/nginx
tar -zxvf nginx-1.30.2.tar.gz

# 备份配置文件
cp -r /usr/local/nginx/conf /usr/local/nginx/conf.bak.$(date +%Y%m%d)

# 备份旧二进制文件
cp /usr/local/nginx/sbin/nginx /usr/local/nginx/sbin/nginx.bak.$(date +%Y%m%d)

# 记录旧版本信息
/usr/local/nginx/sbin/nginx -V > /root/nginx_old_info.txt

# 确认备份成功
ls -la /usr/local/nginx/conf.bak.$(date +%Y%m%d)
ls -la /usr/local/nginx/sbin/nginx.bak.$(date +%Y%m%d)

# 进入解压目录
cd /home/nginx/nginx-1.30.2

# 清理可能存在的编译残留
make clean 2>/dev/null

# 配置编译参数（旧版本没有额外参数，直接默认即可）
./configure

# 编译
make

# 查看当前 nginx master 进程 PID
cat /usr/local/nginx/logs/nginx.pid

# 替换二进制文件
cp -f objs/nginx /usr/local/nginx/sbin/nginx

# 向 master 进程发送 USR2 信号，启动新版本 worker
kill -USR2 $(cat /usr/local/nginx/logs/nginx.pid)

# 等待2秒让新进程启动
sleep 2

# 向旧 master 发送 WINCH 信号，优雅关闭旧 worker
kill -WINCH $(cat /usr/local/nginx/logs/nginx.pid)

# 查看版本号（应显示 1.30.2）
/usr/local/nginx/sbin/nginx -V

# 测试配置文件语法
/usr/local/nginx/sbin/nginx -t

# 查看 nginx 进程
ps aux | grep nginx | grep -v grep

# 测试业务是否正常
curl -I http://127.0.0.1 2>/dev/null | head -5

# 确认新版本正常工作后，关闭旧 master 进程
kill -QUIT $(cat /usr/local/nginx/logs/nginx.pid.oldbin)

# 清理旧 PID 文件
rm -f /usr/local/nginx/logs/nginx.pid.oldbin

# 最终确认进程状态
ps aux | grep "nginx:" | grep -v grep

# 停止当前 nginx
/usr/local/nginx/sbin/nginx -s stop

# 恢复旧二进制
cp /usr/local/nginx/sbin/nginx.bak.$(date +%Y%m%d) /usr/local/nginx/sbin/nginx

# 启动旧版本
/usr/local/nginx/sbin/nginx

# 验证
/usr/local/nginx/sbin/nginx -V

#!/bin/bash

set -e

echo "=== 1. 解压 ==="
cd /home/nginx
tar -zxvf nginx-1.30.2.tar.gz

echo "=== 2. 备份 ==="
cp -r /usr/local/nginx/conf /usr/local/nginx/conf.bak.$(date +%Y%m%d)
cp /usr/local/nginx/sbin/nginx /usr/local/nginx/sbin/nginx.bak.$(date +%Y%m%d)

echo "=== 3. 编译 ==="
cd /home/nginx/nginx-1.30.2
make clean 2>/dev/null
./configure
make

echo "=== 4. 平滑升级 ==="
cp -f objs/nginx /usr/local/nginx/sbin/nginx
kill -USR2 $(cat /usr/local/nginx/logs/nginx.pid)
sleep 2
kill -WINCH $(cat /usr/local/nginx/logs/nginx.pid)

echo "=== 5. 验证 ==="
/usr/local/nginx/sbin/nginx -V
/usr/local/nginx/sbin/nginx -t

echo "=== 6. 清理旧进程 ==="
kill -QUIT $(cat /usr/local/nginx/logs/nginx.pid.oldbin) 2>/dev/null
rm -f /usr/local/nginx/logs/nginx.pid.oldbin

echo "=== 升级完成 ==="

# 1. 进入新版本源码目录
cd /home/nginx/nginx-1.30.2

# 2. 用旧版本的编译参数配置（你的情况是空参数）
./configure

# 3. 编译（不要 make install！）
make

# 4. 备份旧二进制
cp /usr/local/nginx/sbin/nginx /usr/local/nginx/sbin/nginx.bak

# 5. 替换二进制文件
cp -f objs/nginx /usr/local/nginx/sbin/nginx

# 6. 自动完成平滑升级（这一步替代了你之前所有的 kill 命令）
make upgrade

# 7. 验证版本
/usr/local/nginx/sbin/nginx -V