Nginx平滑升级至OpenResty

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nginx 平滑升级

  • nginx路径：/usr/local/nginx

  • 升级前：nginx 1.4.4

  • 升级后：openresty 1.15.8.3

升级步骤

1. 下载openresty

 
   
   
 
    
  
    
    
  
  1.  wget https://openresty.org/download/openresty-1.15.8.3.tar.gz
    2. 
  
    
    
  
  2.  tar -xzvf openresty-1.15.8.3.tar.gz
    3.

2. 编译安装openresty

 
   
   
 
    
  
    
    
  
  1.  cd /downloads/openresty-1.15.8.3
    2. 
  
    
    
  
  2.  ./configure --prefix=/usr/local/
    3. 
  
    
    
  
  3.  gmake
    4. 
  
    
    
  
  4.  gmake install
    5.

3. 平滑迁移Nginx

  • 检查nginx二进制文件和 nginx.pid的位置

 
   
   
 
    
  
    
    
  
  1. [root@test_192.168.1.83 /downloads/openresty-1.15.8.3]# cd /usr/local/nginx/sbin/
    2. 
  
    
    
  
  2. [root@test_192.168.1.83 /usr/local/nginx/sbin]# ll
    3. 
  
    
    
  
  3. total 20952
    4. 
  
    
    
  
  4. -rwxr-xr-x 1 root root 16303050 Aug 11 20:28 nginx
    5. 
  
    
    
  
  5. -rwxr-xr-x 1 root root 5147818 Aug 11 20:01 nginx.old
    6. 
  
    
    
  
  6. [root@test_192.168.1.83 /usr/local/nginx/sbin]# 
    7.

原来应该手动执行以下2步，但是openresty帮我们执行完了，这里就不用手动执行了

  • 备份旧的nginx文件

 
   
   
 
    
  
    
    
  
  1. cp nginx nginx.old
    2.

  • 复制新的nginx文件到/usr/local/nginx/sbin中

 
   
   
 
    
  
    
    
  
  1. cd /downloads/openresty-1.15.8.3/build/nginx-1.15.8/
    2. 
  
    
    
  
  2. cp -rfp objs/nginx /usr/local/nginx/sbin/
    3.

  • 执行信号 kill-USR2 ${nginx_master_pid}平滑升级

 
   
   
 
    
  
    
    
  
  1. [root@test_192.168.1.83 /usr/local/nginx]# ps -ef | grep nginx
    2. 
  
    
    
  
  2. root 30069 1 0 20:27 ? 00:00:00 nginx: master process ./nginx
    3. 
  
    
    
  
  3. www 30070 30069 0 20:27 ? 00:00:00 nginx: worker process
    4. 
  
    
    
  
  4. www 30071 30069 0 20:27 ? 00:00:00 nginx: worker process
    5. 
  
    
    
  
  5. www 30072 30069 0 20:27 ? 00:00:00 nginx: worker process
    6. 
  
    
    
  
  6. www 30073 30069 0 20:27 ? 00:00:00 nginx: worker process
    7. 
  
    
    
  
  7. www 30074 30069 0 20:27 ? 00:00:00 nginx: worker process
    8. 
  
    
    
  
  8. www 30075 30069 0 20:27 ? 00:00:00 nginx: worker process
    9. 
  
    
    
  
  9. www 30076 30069 0 20:27 ? 00:00:00 nginx: worker process
    10. 
  
    
    
  
  10. www 30077 30069 0 20:27 ? 00:00:00 nginx: worker process
    11. 
  
    
    
  
  11. root 30735 8315 0 20:29 pts/0 00:00:00 grep nginx
    12. 
  
    
    
  
  12. [root@test_192.168.1.83 /usr/local/nginx]# kill -USR2 30069
    13.

可以看到，启动了一个新的nginx_master进程以及相应的worker进程。

 
   
   
 
    
  
    
    
  
  1. [root@test_192.168.1.83 /usr/local/nginx]# ps -ef | grep nginx
    2. 
  
    
    
  
  2. root 30069 1 0 20:27 ? 00:00:00 nginx: master process ./nginx
    3. 
  
    
    
  
  3. www 30070 30069 0 20:27 ? 00:00:00 nginx: worker process
    4. 
  
    
    
  
  4. www 30071 30069 0 20:27 ? 00:00:00 nginx: worker process
    5. 
  
    
    
  
  5. www 30072 30069 0 20:27 ? 00:00:00 nginx: worker process
    6. 
  
    
    
  
  6. www 30073 30069 0 20:27 ? 00:00:00 nginx: worker process
    7. 
  
    
    
  
  7. www 30074 30069 0 20:27 ? 00:00:00 nginx: worker process
    8. 
  
    
    
  
  8. www 30075 30069 0 20:27 ? 00:00:00 nginx: worker process
    9. 
  
    
    
  
  9. www 30076 30069 0 20:27 ? 00:00:00 nginx: worker process
    10. 
  
    
    
  
  10. www 30077 30069 0 20:27 ? 00:00:00 nginx: worker process
    11. 
  
    
    
  
  11. root 30761 30069 1 20:29 ? 00:00:00 nginx: master process ./nginx
    12. 
  
    
    
  
  12. www 30762 30761 0 20:29 ? 00:00:00 nginx: worker process
    13. 
  
    
    
  
  13. www 30763 30761 0 20:29 ? 00:00:00 nginx: worker process
    14. 
  
    
    
  
  14. www 30764 30761 0 20:29 ? 00:00:00 nginx: worker process
    15. 
  
    
    
  
  15. www 30765 30761 0 20:29 ? 00:00:00 nginx: worker process
    16. 
  
    
    
  
  16. www 30766 30761 0 20:29 ? 00:00:00 nginx: worker process
    17. 
  
    
    
  
  17. www 30767 30761 0 20:29 ? 00:00:00 nginx: worker process
    18. 
  
    
    
  
  18. www 30768 30761 0 20:29 ? 00:00:00 nginx: worker process
    19. 
  
    
    
  
  19. www 30769 30761 0 20:29 ? 00:00:00 nginx: worker process
    20. 
  
    
    
  
  20. root 30771 8315 0 20:29 pts/0 00:00:00 grep nginx
    21.

还可以看到，旧的 nginx.pid文件被修改为了 nginx.pid.oldbin，同时生成了一个新的 nginx.pid文件用来记录新的nginx master进程的pid。

 
   
   
 
    
  
    
    
  
  1. [root@test_192.168.1.83 /usr/local/nginx]# ll
    2. 
  
    
    
  
  2. total 44
    3. 
  
    
    
  
  3. drwx------ 2 www root 4096 Aug 11 15:29 client_body_temp
    4. 
  
    
    
  
  4. drwxr-xr-x 3 root root 4096 Aug 4 21:42 conf
    5. 
  
    
    
  
  5. drwx------ 12 www root 4096 Jun 20 2017 fastcgi_temp
    6. 
  
    
    
  
  6. drwxr-xr-x 2 root root 4096 Nov 5 2015 html
    7. 
  
    
    
  
  7. drwxr-xr-x 2 root root 4096 Jul 28 13:53 logs
    8. 
  
    
    
  
  8. -rw-r--r-- 1 root root 6 Aug 11 20:29 nginx.pid
    9. 
  
    
    
  
  9. -rw-r--r-- 1 root root 6 Aug 11 20:27 nginx.pid.oldbin
    10. 
  
    
    
  
  10. drwx------ 12 www root 4096 Mar 28 2018 proxy_temp
    11. 
  
    
    
  
  11. drwxr-xr-x 2 root root 4096 Aug 11 20:28 sbin
    12. 
  
    
    
  
  12. drwx------ 2 www root 4096 Nov 5 2015 scgi_temp
    13. 
  
    
    
  
  13. drwx------ 2 www root 4096 Nov 5 2015 uwsgi_temp
    14.

  • 执行 kill-WINCH ${nginx_master_pid}结束工作进程

 
   
   
 
    
  
    
    
  
  1. [root@test_192.168.1.83 /usr/local/nginx]# kill -WINCH 30069
    2. 
  
    
    
  
  2. [root@test_192.168.1.83 /usr/local/nginx]# ps -ef | grep nginx
    3. 
  
    
    
  
  3. root 30069 1 0 20:27 ? 00:00:00 nginx: master process ./nginx
    4. 
  
    
    
  
  4. root 30761 30069 0 20:29 ? 00:00:00 nginx: master process ./nginx
    5. 
  
    
    
  
  5. www 30762 30761 0 20:29 ? 00:00:00 nginx: worker process
    6. 
  
    
    
  
  6. www 30763 30761 0 20:29 ? 00:00:00 nginx: worker process
    7. 
  
    
    
  
  7. www 30764 30761 0 20:29 ? 00:00:00 nginx: worker process
    8. 
  
    
    
  
  8. www 30765 30761 0 20:29 ? 00:00:00 nginx: worker process
    9. 
  
    
    
  
  9. www 30766 30761 0 20:29 ? 00:00:00 nginx: worker process
    10. 
  
    
    
  
  10. www 30767 30761 0 20:29 ? 00:00:00 nginx: worker process
    11. 
  
    
    
  
  11. www 30768 30761 0 20:29 ? 00:00:00 nginx: worker process
    12. 
  
    
    
  
  12. www 30769 30761 0 20:29 ? 00:00:00 nginx: worker process
    13.

可以看到，旧的worker进程已经优雅结束了（不再接收新的请求，处理完当前请求后自动结束，或者在等待了maxrequeststimeout之后强行结束）

此时旧的master进程id还在，可以通过 kill-HUP ${nginx_master_pid}重新拉起旧的nginx

如果不想回滚，可以执行 kill-QUIT ${nginx_master_pid} 优雅结束master进程

 
   
   
 
    
  
    
    
  
  1. [root@test_192.168.1.83 /usr/local/nginx]# ps -ef | grep nginx
    2. 
  
    
    
  
  2. root 5185 8315 0 21:11 pts/0 00:00:00 grep nginx
    3. 
  
    
    
  
  3. root 30069 1 0 20:27 ? 00:00:00 nginx: master process ./nginx
    4. 
  
    
    
  
  4. root 30761 30069 0 20:29 ? 00:00:00 nginx: master process ./nginx
    5. 
  
    
    
  
  5. www 30762 30761 0 20:29 ? 00:00:00 nginx: worker process
    6. 
  
    
    
  
  6. www 30763 30761 0 20:29 ? 00:00:00 nginx: worker process
    7. 
  
    
    
  
  7. www 30764 30761 0 20:29 ? 00:00:00 nginx: worker process
    8. 
  
    
    
  
  8. www 30765 30761 0 20:29 ? 00:00:00 nginx: worker process
    9. 
  
    
    
  
  9. www 30766 30761 0 20:29 ? 00:00:00 nginx: worker process
    10. 
  
    
    
  
  10. www 30767 30761 0 20:29 ? 00:00:00 nginx: worker process
    11. 
  
    
    
  
  11. www 30768 30761 0 20:29 ? 00:00:00 nginx: worker process
    12. 
  
    
    
  
  12. www 30769 30761 0 20:29 ? 00:00:00 nginx: worker process
    13. 
  
    
    
  
  13. [root@test_192.168.1.83 /usr/local/nginx]# kill -QUIT 30069
    14. 
  
    
    
  
  14. [root@test_192.168.1.83 /usr/local/nginx]# ps -ef | grep nginx
    15. 
  
    
    
  
  15. root 5212 8315 0 21:11 pts/0 00:00:00 grep nginx
    16. 
  
    
    
  
  16. root 30761 1 0 20:29 ? 00:00:00 nginx: master process ./nginx
    17. 
  
    
    
  
  17. www 30762 30761 0 20:29 ? 00:00:00 nginx: worker process
    18. 
  
    
    
  
  18. www 30763 30761 0 20:29 ? 00:00:00 nginx: worker process
    19. 
  
    
    
  
  19. www 30764 30761 0 20:29 ? 00:00:00 nginx: worker process
    20. 
  
    
    
  
  20. www 30765 30761 0 20:29 ? 00:00:00 nginx: worker process
    21. 
  
    
    
  
  21. www 30766 30761 0 20:29 ? 00:00:00 nginx: worker process
    22. 
  
    
    
  
  22. www 30767 30761 0 20:29 ? 00:00:00 nginx: worker process
    23. 
  
    
    
  
  23. www 30768 30761 0 20:29 ? 00:00:00 nginx: worker process
    24. 
  
    
    
  
  24. www 30769 30761 0 20:29 ? 00:00:00 nginx: worker process
    25. 
  
    
    
  
  25. [root@test_192.168.1.83 /usr/local/nginx]# 
    26.

可以看到旧的master进程已经消失了，新的master进程父进程id变为了1

  • 查看nginx版本，验证是否升级成功

 
   
   
 
    
  
    
    
  
  1. [root@test_192.168.1.83 /usr/local/nginx/sbin]# ./nginx -v
    2. 
  
    
    
  
  2. nginx version: openresty/1.15.8.3
    3. 
  
    
    
  
  3. [root@test_192.168.1.83 /usr/local/nginx/sbin]# 
    4.

可以看到已经升级至 nginx 1.15.8.3


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