Nginx平滑升级

Nginx平滑升级

Nginx平滑升级流程：

1. 获取原版本的编译信息可使用nginx -V命令
2. 获取新版本或功能包
3. 配置新版本或功能，预编译时带上原版本的编译信息+新版本或新功能(–add-module)
4. make进行编译，但不能执行make install(安装)操作
5. 下面几步建议一条命令串完成，耗时短让网站访客无感知到更新

命令串为cp /usr/local/nginx/sbin/nginx{,-bak};pkill nginx;\cp objs/nginx /usr/local/nginx/sbin/;systemctl start nginx

上条命令的解释：先备份(建议cp)原版本的主程序(通常在/usr/local/nginx/sbin/的nginx)，然后停止原程序的运行

把新版本程序移动到原程序的存放位置，然后启动

平滑升级总结：在Linux中的源码部署软件升级的流程几乎都是如此，所谓触类旁通。

升级流程演示

[root@localhost ~]# systemctl status nginx.service
● nginx.service - nginx server daemon
   Loaded: loaded (/usr/lib/systemd/system/nginx.service; enabled; vendor preset: disabled)
   Active: active (running) since Wed 2022-10-12 14:37:41 CST; 2min 38s ago

[root@localhost ~]# nginx -V
nginx version: nginx/1.20.2
built by gcc 8.5.0 20210514 (Red Hat 8.5.0-4) (GCC)
built with OpenSSL 1.1.1k  FIPS 25 Mar 2021
TLS SNI support enabled
configure arguments: --prefix=/usr/local/nginx --user=nginx --group=nginx --with-debug --with-http_ssl_module --with-http_realip_module --with-http_image_filter_module --with-http_gunzip_module --with-http_gzip_static_module --with-http_stub_status_module

[root@localhost ~]# cd /usr/local/src/
[root@localhost src]# wget http://nginx.org/download/nginx-1.22.0.tar.gz
[root@localhost src]# dnf -y install git
[root@localhost src]# git clone https://gitee.com/wujunze/nginx_module_echo.git
[root@localhost src]# ls
nginx-1.22.0.tar.gz  nginx_module_echo

[root@localhost src]# tar -xf nginx-1.22.0.tar.gz
[root@localhost src]# cd nginx-1.22.0/
[root@localhost nginx-1.22.0]# ./configure \
--prefix=/usr/local/nginx \
--user=nginx \
--group=nginx \
--with-debug \
--with-http_ssl_module \
--with-http_realip_module \
--with-http_image_filter_module \
--with-http_gunzip_module \
--with-http_gzip_static_module \
--with-http_stub_status_module \
--add-module=../nginx_module_echo
#进行编译，但不要安装
[root@localhost nginx-1.22.0]# make
[root@localhost nginx-1.22.0]# ls
auto  CHANGES  CHANGES.ru  conf  configure  contrib  html  LICENSE  Makefile  man  objs  README  src
[root@localhost nginx-1.22.0]# ls objs/
addon         Makefile  nginx.8            ngx_auto_headers.h  ngx_modules.o
autoconf.err  nginx     ngx_auto_config.h  ngx_modules.c       src
[root@localhost nginx-1.22.0]# objs/nginx -V
nginx version: nginx/1.22.0
built by gcc 8.5.0 20210514 (Red Hat 8.5.0-4) (GCC)
built with OpenSSL 1.1.1k  FIPS 25 Mar 2021
TLS SNI support enabled
configure arguments: --prefix=/usr/local/nginx --user=nginx --group=nginx --with-debug --with-http_ssl_module --with-http_realip_module --with-http_image_filter_module --with-http_gunzip_module --with-http_gzip_static_module --with-http_stub_status_module --add-module=../nginx_module_echo

[root@localhost nginx-1.22.0]# cp /usr/local/nginx/sbin/nginx{,-bak};pkill nginx;\cp objs/nginx /usr/local/nginx/sbin/;systemctl start nginx