服务管理--Nginx

Nginx --升级

一.Nginx 升级实验

源码包安装(1.配置 2.编译 3.安装)

1.先解压升级包
[root@vlnx251101 ~]# tar xf nginx-1.13.4.tar.gz 

2.转到升级包那个目录
[root@vlnx251101 ~]# cd nginx-1.13.4/

3.指定目录等问题 （prce-8.40）支持正则
[root@vlnx251101 nginx-1.13.4]# ./configure --prefix=/usr/local/nginx --user=nginx --group=nginx --with-http_ssl_module --with-http_stub_status_module --with-file-aio --with-http_dav_module --with-pcre=../pcre-8.40 

[root@vlnx251101 nginx-1.13.4]# make 
4.查看当前版本
[root@vlnx251101 nginx-1.13.4]# /usr/local/nginx/sbin/nginx -v
nginx version: nginx/1.12.1

5.把之前的旧的备份一下
[root@mysqlb nginx-1.13.4]# mv /usr/local/nginx/sbin/nginx /usr/local/nginx/sbin/nginx.bak

[root@mysqlb nginx-1.13.4]# ls
auto     CHANGES.ru  configure  html     Makefile  objs    src
CHANGES  conf        contrib    LICENSE  man       README
[root@mysqlb nginx-1.13.4]# cp  objs/nginx /usr/local/nginx/sbin/

6.查看当前版本
[root@mysqlb nginx-1.13.4]# /usr/local/nginx/sbin/nginx -v
nginx version: nginx/1.13.4

　方法一：

[root@mysqlb nginx-1.13.4]# make upgrade

 　方法二：

1.查看nginx的pid

[root@mysqlb ~]# ps -ef | grep nginx
root      64600      1  0 16:47 ?        00:00:00 nginx: master process /usr/local/ngin
/sbin/nginxnginx     64601  64600  0 16:47 ?        00:00:00 nginx: worker process
root      70426  58718  0 17:21 pts/3    00:00:00 grep --color=auto nginx

2.执行 kill -USR2 pid

[root@mysqlb ~]# kill -USR2 64600
[root@mysqlb ~]# ps -ef | grep nginx
root      64600      1  0 16:47 ?        00:00:00 nginx: master process /usr/local/ngin
/sbin/nginxnginx     64601  64600  0 16:47 ?        00:00:00 nginx: worker process
root      70428  64600  0 17:22 ?        00:00:00 nginx: master process /usr/local/ngin
/sbin/nginxnginx     70429  70428  0 17:22 ?        00:00:00 nginx: worker process
root      70432  58718  0 17:23 pts/3    00:00:00 grep --color=auto nginx

此时,新旧版本的nginx实例会同时运行,共同处理输入的请求.要逐步停止旧版本的nginx实例,必须发送WINCH信号给旧的主进程,然后,它的工作进程就将开始正常关闭:

3.执行 kill -WINCH pid

[root@mysqlb ~]# kill -WINCH 64600
[root@mysqlb ~]# ps -ef | grep nginx
root      64600      1  0 16:47 ?        00:00:00 nginx: master process /usr/local/ngin
/sbin/nginxroot      70428  64600  0 17:22 ?        00:00:00 nginx: master process /usr/local/ngin
/sbin/nginxnginx     70429  70428  0 17:22 ?        00:00:00 nginx: worker process
root      70434  58718  0 17:24 pts/3    00:00:00 grep --color=auto nginx

如果尝试升级成功，也希望保留新的服务器时，发送 QUIT 信号给旧的主进程使其退出而只留下新的服务器运行。

4.执行 kill -QUIT pid

[root@mysqlb ~]# kill -QUIT 64600
[root@mysqlb ~]# ps -ef | grep nginx
root      70428      1  0 17:22 ?        00:00:00 nginx: master process /usr/local/ngin
/sbin/nginxnginx     70429  70428  0 17:22 ?        00:00:00 nginx: worker process
root      70436  58718  0 17:26 pts/3    00:00:00 grep --color=auto nginx

不执行第四步还可以恢复之前的旧版本

[root@vlnx251101 ~]# rm -rf /usr/local/nginx/sbin/nginx
[root@vlnx251101 ~]# cp /usr/local/nginx/sbin/nginx.bak /usr/local/nginx/sbin/nginx

[root@vlnx251101 ~]# kill -HUP 44610
[root@vlnx251101 ~]# ps -ef | grep nginx
root      44610      1  0 12:40 ?        00:00:00 nginx: master process /usr/local/nginx/sbin/nginx
root      74746  44610  0 14:38 ?        00:00:00 nginx: master process /usr/local/nginx/sbin/nginx
nginx    74747  74746  0 14:38 ?        00:00:00 nginx: worker process
nginx    77990  44610  0 14:53 ?        00:00:00 nginx: worker process

[root@vlnx251101 ~]# kill -QUIT 74746
[root@vlnx251101 ~]# ps -ef | grep nginx
root      44610      1  0 12:40 ?        00:00:00 nginx: master process /usr/local/nginx/sbin/nginx
nginx    77990  44610  0 14:53 ?        00:00:00 nginx: worker process

　二.　LuaJIT即采用C语言写的Lua代码的解释器

1.下载LuaJIT

先安装yum install wget

[root@mysqlb ~]# wget http://luajit.org/download/LuaJIT-2.0.5.tar.gz

2.编译，安装

[root@mysqlb ~]# tar xf LuaJIT-2.0.5.tar.gz

[root@mysqlb ~]# cd LuaJIT-2.0.5/

[root@mysqlb LuaJIT-2.0.5]# make install  PREFIX=/usr/local/luajit

[root@mysqlb LuaJIT-2.0.5]# echo "/usr/local/luajit/lib/" > /etc/ld.so.conf.d/usr_local_luajit_lib.conf

[root@mysqlb LuaJIT-2.0.5]# ldconfig (刷新配置文件)

3.配置环境变量

[root@mysqlb LuaJIT-2.0.5]# export LUAJIT_LIB=/usr/local/luajit/lib

[root@mysqlb LuaJIT-2.0.5]# export LUAJIT_INC=/usr/local/luajit/include/luajit-2.0

4.Lua程序

[root@mysqlb LuaJIT-2.0.5]# vim hello.lua

[root@mysqlb LuaJIT-2.0.5]# cat hello.lua
print ("Hello World")

[root@mysqlb LuaJIT-2.0.5]# lua hello.lua
Hello World

[root@mysqlb LuaJIT-2.0.5]# lua
Lua 5.1.4  Copyright (C) 1994-2008 Lua.org, PUC-Rio
> 
> print ("Hello World")
Hello World
> 

5.下载NDK与Lua_module

[root@mysqlb ~]# tar xf ngx_devel_kit-0.3.0.tar 
[root@mysqlb ~]# tar xf lua-nginx-module-0.10.10.tar 
[root@mysqlb ~]# tar xf nginx-1.13.4.tar 
[root@mysqlb ~]# cd nginx-1.13.4
[root@mysqlb nginx-1.13.4]# make clean
rm -rf Makefile objs
[root@mysqlb nginx-1.13.4]# ./configure --prefix=/usr/local/nginx1134 --user=nginx --gro
up=nginx --with-http_ssl_module --with-http_stub_status_module --with-file-aio --with-http_dav_module --with-pcre=../pcre-8.40 --add-module=../ngx_devel_kit-0.3.0 --add-module=../lua-nginx-module-0.10.10
[root@mysqlb nginx-1.13.4]# make && make install

6.更改配置文件

[root@mysqlb nginx-1.13.4]# vim /usr/local/nginx1134/conf/nginx.conf

[root@mysqlb nginx-1.13.4]# echo 'ngx.say("Hello World")' > /tmp/hello.lua
千万记得杀死80端口进程

[root@mysqlb nginx-1.13.4]# pkill nginx

[root@mysqlb nginx-1.13.4]# /usr/local/nginx1134/sbin/nginx -c /usr/local/nginx1134/conf
/nginx.conf

7.结果

[root@mysqlb nginx-1.13.4]# curl 192.168.88.101/test1
Hello world
[root@mysqlb nginx-1.13.4]# curl 192.168.88.101/test2
Hello World

三. 重写(rewrite)　

1.更改配置文件 

[root@mysqlb nginx]#  cd /usr/local/nginx/conf/nginx.conf

server {
        listen       80;
        server_name  localhost;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

        #location / {
           # root   html;
            #index  index.html index.htm;
       # }
          location /index.html {
           root      html;
           rewrite /index.html  /index.php break;   break:不会在执行后面那个,到这里终止.
         }

        #error_page  404              /404.html;

[root@mysqlb nginx]# echo php > html/index.php
[root@mysqlb nginx]# ls html/
50x.html  index.html  index.php
[root@mysqlb nginx]# cat html/index.php
php

　　

 2.重启服务

[root@mysqlb nginx]# systemctl restart nginx

[root@mysqlb nginx]# curl 192.168.88.101/index.html
php