Nginx 1.8.0不间断平滑升级到1.10.1

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Nginx1.8.0 平滑升级到 1.10.1，不间断服务。

1. 先查看当前的版本及原来安装编译时候的参数路径文件信息。
#/usr/local/nginx/sbin/nginx -V
nginx version: nginx/1.8.0
built by gcc 4.1.2 20080704 (Red Hat 4.1.2-50)
built with OpenSSL 1.0.1c 10 May 2012
TLS SNI support enabled
configure
arguments: –user=nginx –group=nginx –prefix=/usr/local/nginx
–with-http_ssl_module –with-openssl=-1.0.1c
–with-pcre=/soft/pcre-8.21 –with-zlib=/soft/zlib-1.2.8
–with-http_stub_status_module –with-threads -l_module
–with-http_flv_module –with-http_stub_status_module
–with-http_gzip_static_module –http-client-bodyar/tmp/nginx/client/
–http-proxy-temp-path=/var/tmp/nginx/proxy/
–http-fastcgi-temp-path=/var/tmp/nginx/fcgi/
temp-path=/var/tmp/nginx/uwsgi –http-scgi-temp-path=/var/tmp/nginx/scgi

※这是以前编译的参数。编辑新版本需要用到。

2. 下载新版本：http://nginx.org/en/download.html 解压、编译
# tar -zxvf nginx-1.10.1.tar.gz
# cd nginx-1.10.1
#
./configure –user=nginx –group=nginx –prefix=/usr/local/nginx
–with-http_ssl_module –with-openssl=/soft/openssl-1.0.1c
–with-pcre=/soft/pcre-8.21 –with-zlib=/soft/zlib-1.2.8
–with-http_stub_status_module –with-threads –with-http_ssl_module
–with-http_flv_module –with-http_stub_status_module
–with-http_gzip_static_module
–http-client-body-temp-path=/var/tmp/nginx/client/
–http-proxy-temp-path=/var/tmp/nginx/proxy/
–http-fastcgi-temp-path=/var/tmp/nginx/fcgi/
–http-uwsgi-temp-path=/var/tmp/nginx/uwsgi
–http-scgi-temp-path=/var/tmp/nginx/scgi
# make

编译安装后可以执行 echo $? 查看是否成功，返回值为 0 说明正确。

3. 执行完后，不要 make install，重名 /sbin/nginx 为 nginx.old
# mv /usr/local/nginx/sbin/nginx /usr/local/nginx/sbin/nginx.old

4. 复制编译后 objs 目录下的 nginx 文件到 nginx 的安装目录 sbin 下
# cp objs/nginx /usr/local/nginx/sbin/

5. 测试一下新复制过来文件生效情况：
# /usr/local/nginx/sbin/nginx -t
nginx: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /usr/local/nginx/conf/nginx.conf test is successful

6. 让 nginx 把 nginx.pid 文件修改成 nginx.pid.oldbin，随即启动 nginx，实现不间断服务。
# kill -USR2 `cat /usr/local/nginx/logs/nginx.pid`

此时查看 nginx 进程，可以看到新建立的进程和以前的进程同时存在.

查看进程 pid 文件：
[root@Nginx ~]#cd /usr/local/nginx/logs
[root@Nginx logs]# ls
access.log error.log nginx.pid nginx.pid.oldbin

结束 nginx.pid.oldbin：
# kill -QUIT `cat /usr/local/nginx/logs/nginx.pid.oldbin`

结束后查看 nginx 进程，此时可以看到 nginx 进程是新建立的进程，之前的进程已结束。

【QUIT 表示处理完当前请求后没关闭进程；
HUP 表示重新加载配置，也就是关闭原有进程，并开启新的工作进程，不会中断用户访问，可以平滑重启 nginx；
USR1 用于 nginx 日志切换，即重新打开一个日志文件；
USR2 用于平滑升级可执行程序；
WINCH 从容关闭工作进程】

7. 升级完成，最后在看一下升级后的版本。
[root@Nginx~]# nginx -tv
nginx version: nginx/1.10.1
nginx: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /usr/local/nginx/conf/nginx.conf test is successful

[root@Nginx ~]# nginx -V
nginx version: nginx/1.10.1
built by gcc 4.1.2 20080704 (Red Hat 4.1.2-50)
built with OpenSSL 1.0.1c 10 May 2012
TLS SNI support enabled
configure
arguments: –user=nginx –group=nginx –prefix=/usr/local/nginx
–with-http_ssl_module –with-openssl=/soft/openssl-1.0.1c
–with-pcre=/soft/pcre-8.21 –with-zlib=/soft/zlib-1.2.8
–with-http_stub_status_module –with-threads –with-http_ssl_module
–with-http_flv_module –with-http_stub_status_module
–with-http_gzip_static_module
–http-client-body-temp-path=/var/tmp/nginx/client/
–http-proxy-temp-path=/var/tmp/nginx/proxy/
–http-fastcgi-temp-path=/var/tmp/nginx/fcgi/
–http-uwsgi-temp-path=/var/tmp/nginx/uwsgi
–http-scgi-temp-path=/var/tmp/nginx/scgi
[root@Nginx ~]#