首先查看现在环境nginx的版本为1.8.0 编译的参数只指定了安装路径；
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[root@localhost sbin]
# ./nginx -V
nginx version: nginx
/1
.8.0
built by gcc 4.4.7 20120313 (Red Hat 4.4.7-11) (GCC)
configure arguments: --prefix=
/usr/local/nginx
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平滑升级步骤如下：
下载nginx1.9.7版本，解压并进入解压后的目录
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[root@localhost ~]
# wget -P /usr/local/src/ http://nginx.org/download/nginx-1.9.7.tar.gz
[root@localhost ~]
# cd /usr/local/src/
[root@localhost src]
# tar -zxvf nginx-1.9.7.tar.gz
[root@localhost src]
# cd nginx-1.9.7
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编译安装之前查看nginx进程ID信息：
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[root@localhost nginx-1.9.7]
# ps -ef |grep nginx
root 894 1 0 16:06 ? 00:00:00 nginx: master process
/usr/local/nginx/sbin/nginx
-c
/usr/local/nginx/conf/nginx
.conf
nobody 896 894 0 16:06 ? 00:00:00 nginx: worker process
nobody 897 894 0 16:06 ? 00:00:00 nginx: worker process
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编译安装：指定用户www 支持ssl 支持pcre 支持状态查询 支持静态压缩模块；
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[root@localhost nginx-1.9.7]
# ./configure --user=www --group=www --prefix=/usr/local/nginx/ --with-pcre --with-http_stub_status_module --with-http_ssl_module --with-http_gzip_static_module
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编译安装后可以echo $?查看是否成功，成功后只需要执行make，不需要make install；
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[root@localhost nginx-1.9.7]
# make
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平滑升级，先移走现有的nginx二进制文件
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[root@localhost nginx-1.9.7]
# mv /usr/local/nginx/sbin/nginx /usr/local/nginx/sbin/nginx.old
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拷贝新生成的nginx二进制文件到指定目录
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[root@localhost nginx-1.9.7]
# cp objs/nginx /usr/local/nginx/sbin/
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执行升级命令
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[root@localhost nginx-1.9.7]
# make upgrade
/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
kill
-USR2 `
cat
/usr/local/nginx//logs/nginx
.pid`
sleep
1
test
-f
/usr/local/nginx//logs/nginx
.pid.oldbin
kill
-QUIT `
cat
/usr/local/nginx//logs/nginx
.pid.oldbin`
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查看版本，发现已经是1.9.7版本，编译的参数也存在；
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[root@localhost nginx-1.9.7]
# /usr/local/nginx/sbin/nginx -V
nginx version: nginx
/1
.9.7
built by gcc 4.4.7 20120313 (Red Hat 4.4.7-16) (GCC)
built with OpenSSL 1.0.1e-fips 11 Feb 2013
TLS SNI support enabled
configure arguments: --user=www --group=www --prefix=
/usr/local/nginx/
--with-pcre --with-http_stub_status_module --with-http_ssl_module --with-http_gzip_static_module
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创建www用户
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[root@localhost nginx-1.9.7]
# useradd -s /sbin/nologin -M www
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查看nginx进程 PID已经更改
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[root@localhost sbin]
# ps -ef |grep nginx
root 3814 1 0 16:23 ? 00:00:00 nginx: master process
/usr/local/nginx/sbin/nginx
-c
/usr/local/nginx/conf/nginx
.conf
nobody 3815 3814 0 16:23 ? 00:00:00 nginx: worker process
nobody 3816 3814 0 16:23 ? 00:00:00 nginx: worker process
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修改nginx.conf配置文件，更改用户和用户组为www用户，保存退出，重启nginx服务；
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[root@localhost conf]
# ps -ef |grep nginx
root 3814 1 0 16:23 ? 00:00:00 nginx: master process
/usr/local/nginx/sbin/nginx
-c
/usr/local/nginx/conf/nginx
.conf
www 4200 3814 0 16:48 ? 00:00:00 nginx: worker process
www 4201 3814 0 16:48 ? 00:00:00 nginx: worker process
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nginx版本平滑升级结束；
本文转自 模范生 51CTO博客，原文链接：http://blog.51cto.com/mofansheng/1744062，如需转载请自行联系原作者
