Nginx如何重新編譯添加模塊

1.查看nginx支持的模塊

nginx -V

[root@www ~]# /usr/local/nginx/sbin/nginx -V
nginx version: nginx/1.16.0
built by gcc 4.8.5 20150623 (Red Hat 4.8.5-36) (GCC) 
built with OpenSSL 1.0.2k-fips  26 Jan 2017
TLS SNI support enabled
configure arguments: --prefix=/usr/local/nginx --user=www --group=www --with-http_ssl_module --with-http_stub_status_module --with-http_realip_module

2.nginx平滑升級

1.重新編譯nginx

./configure --prefix=/usr/local/nginx --user=www --group=www --with-http_ssl_module --with-http_stub_status_module --with-http_realip_module --with-http_slice_module&&make

2.備份二進制文件，用新版的替換
新的nginx 二進制文件在objs目錄下

3確保配置文件正確(-t)

4.發送USR2信號，Nginx會啟動一個新版本的master進程和對應工作進程

[root@www sbin]# ps aux|grep nginx
root      3737  0.0  0.1  46116  2324 ?        Ss   May22   0:00 nginx: master process /usr/local/nginx/sbi
root      6262  0.0  0.0 112712   992 pts/1    R+   21:58   0:00 grep --color=auto nginx
www      31013  0.0  0.2  49340  4656 ?        S    Jun03   0:06 nginx: worker process
[root@www sbin]# kill -USR2 3737
[root@www sbin]# ps aux|grep nginx
root      3737  0.0  0.1  46116  2324 ?        Ss   May22   0:00 nginx: master process /usr/local/nginx/sbin/nginx
root      6373  0.0  0.1  45984  3728 ?        S    21:58   0:00 nginx: master process /usr/local/nginx/sbin/nginx
www       6374  0.0  0.1  48476  2028 ?        S    21:58   0:00 nginx: worker process
root      6400  0.0  0.0 112712   992 pts/1    R+   21:59   0:00 grep --color=auto nginx
www      31013  0.0  0.2  49340  4656 ?        S    Jun03   0:06 nginx: worker process

5.向舊的Nginx主進程（master）發送WINCH信號，它會逐步關閉自己的工作進程（主進程不退出），這時所有請求都會由新版Nginx處理

[root@www sbin]# kill -WINCH 3737
[root@www sbin]# ps aux|grep nginx
root      3737  0.0  0.1  46116  2324 ?        Ss   May22   0:00 nginx: master process /usr/local/nginx/sbin/nginx
root      6373  0.0  0.1  45984  3728 ?        S    21:58   0:00 nginx: master process /usr/local/nginx/sbin/nginx
www       6374  0.0  0.1  48476  2028 ?        S    21:58   0:00 nginx: worker process
root      6758  0.0  0.0 112712   988 pts/1    R+   22:00   0:00 grep --color=auto nginx

6.發送QUIT信息

[root@www sbin]# kill -QUIT 3737
[root@www sbin]# ps aux|grep nginx
root      6373  0.0  0.1  45984  3728 ?        S    21:58   0:00 nginx: master process /usr/local/nginx/sbin/nginx
www       6374  0.0  0.1  48476  2028 ?        S    21:58   0:00 nginx: worker process
root      7045  0.0  0.0 112712   992 pts/1    R+   22:02   0:00 grep --color=auto nginx

7.如果需要回滾，發送HUP信號（在6之前操作）

[root@localhost ~]# kill -HUP 3737