1.反向代理多机
实验：Nginx要开启upstream(负载均衡)、location(url链接)、proxy_pass(反向代理)
配置：7-3做代理服务器；7-1 和 7-2做Tomcat服务器
关闭防火墙和selinux
1.准备配置
7-3安装nginx；7-1 和 7-2安装Tomcat；都开启服务！
###服务安装，可参考前面文章
7-3
7-1
7-2
2.配置7-3Nginx服务器
vim /etc/nginx/conf/nginx.conf
17 http {
18 upstream tomcat {
19 server 192.168.91.100:8080;
20 server 192.168.91.102:8080;
21 }
48 location ~* \.(jpg|png)$ {
49 root /data/html;
50 }
51
52 location / {
53 proxy_pass http://tomcat;
54 }
nginx -t
nginx -s reload
3.建立动态资源存放位置(本机中)
[root@localhost ~]# mkdir /data/html
[root@localhost ~]#
[root@localhost ~]#
[root@localhost ~]# nginx -t
nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful
[root@localhost ~]# nginx -s reload
[root@localhost ~]# cd /data/html
[root@localhost html]# vim test.html
[root@localhost html]# cat test.html
test test
[root@localhost html]#
4.配置7-2Tomcat服务器
[root@localhost ~]# cd /usr/local/tomcat/webapps/ROOT
[root@localhost ROOT]#
[root@localhost ROOT]# ls
asf-logo-wide.svg bg-upper.png tomcat.css tomcat.svg
bg-button.png favicon.ico tomcat.gif WEB-INF
bg-middle.png index.jsp tomcat.png
bg-nav.png RELEASE-NOTES.txt tomcat-power.gif
[root@localhost ROOT]#
[root@localhost ROOT]# vim test.jsp
[root@localhost ROOT]# cat test.jsp
7-2
[root@localhost ROOT]#
5.配置7-1Tomcat服务器
[root@centos1 ~]# cd /usr/local/tomcat/webapps/ROOT
[root@centos1 ROOT]# ls
asf-logo-wide.svg bg-upper.png tomcat.css tomcat.svg
bg-button.png favicon.ico tomcat.gif WEB-INF
bg-middle.png index.jsp tomcat.png
bg-nav.png RELEASE-NOTES.txt tomcat-power.gif
[root@centos1 ROOT]# vim test.jsp
[root@centos1 ROOT]# cat test.jsp
7-1
[root@centos1 ROOT]#
6.Nginx服务器7-3，curl去访问验证
[root@localhost ~]# curl 192.168.91.103/test.html
test test
[root@localhost ~]# curl 192.168.91.103/test.jsp
7-1
[root@localhost ~]# curl 192.168.91.103/test.jsp
7-2
[root@localhost ~]# curl 192.168.91.103/test.jsp
7-1
[root@localhost ~]#
2.反向代理多机多级
实验：7-3为Nginx代理服务器；7-4和7-5为Nginx服务器；7-1和7-2为Tomcat服务器
配置：给7-4和7-5安装Nginx；其他主机的服务也得配置和打开！
关闭防火墙和selinux
1.准备配置
先做第一层；7-3Nginx代理服务器传内容给7-4和7-5Nginx服务器
2.配置7-3Nginx代理服务器
vim /etc/nginx/nginx.conf
17 http {
18 upstream web {
19 server 192.168.91.104;
20 server 192.168.91.105;
21 }
48 location / {
49 proxy_pass http://web;
50 }
51
nginx -t
nginx -s reload
3.配置7-4Nginx服务器
[root@centos4 ~]# vim /usr/share/nginx/html/index.html
[root@centos4 ~]#
[root@centos4 ~]# cat /usr/share/nginx/html/index.html
7-4
[root@centos4 ~]#
4.配置7-5Nginx服务器
[root@centos5 ~]# vim /usr/share/nginx/html/index.html
[root@centos5 ~]#
[root@centos5 ~]# cat /usr/share/html/index.html
cat: /usr/share/html/index.html: 没有那个文件或目录
[root@centos5 ~]# cat /usr/share/nginx/html/index.html
7-5
[root@centos5 ~]#
5.7-3curl访问，验证第一层配置(Nginx代理服务器 传内容给 Nginx服务器)
[root@localhost ~]# curl 192.168.91.103
7-4
[root@localhost ~]# curl 192.168.91.103
7-5
[root@localhost ~]# curl 192.168.91.103
7-4
[root@localhost ~]#
做第二层；7-4和7-5Nginx服务器传内容给7-1和7-2Tomcat服务器
6.配置7-4Nginx服务器
vim /etc/nginx/nginx.conf
29 upstream tomcat {
30 server 192.168.91.102:8080;
31 server 192.168.91.103:8080;
32 }
48 location ~* \.jsp$ {
49 proxy_pass http://tomcat;
50 }
51
52 location ~* \.html$ {
53 root /usr/share/nginx/html;
54 }
nginx -t
nginx -s reload
7.配置7-5Nginx服务器
vim /etc/nginx/nginx.conf
30 upstream tomcat {
31 server 192.168.91.102:8080;
32 server 192.168.91.103:8080;
33 }
49 location ~* \.jsp$ {
50 proxy_pass http://tomcat;
51 }
52
53 location ~* \.html$ {
54 root /usr/share/nginx/html;
55 }
nginx -t
nginx -s reload
8.7-3curl访问，验证第二层配置(7-3Nginx代理服务器 传内容给 7-4和7-5Nginx服务器；再给到7-1和7-2Tomcat服务器)
1.当访问静态资源（.html）时
[root@localhost ~]# curl 192.168.91.103/index.html
7-5
[root@localhost ~]# curl 192.168.91.103/index.html
7-4
[root@localhost ~]# curl 192.168.91.103/index.html
7-5
[root@localhost ~]# 
2.当访问动态资源（.jsp）时
[root@localhost ~]# curl 192.168.91.103/test.jsp
7-1
[root@localhost ~]# curl 192.168.91.103/test.jsp
7-1
[root@localhost ~]# curl 192.168.91.103/test.jsp
7-2
[root@localhost ~]# curl 192.168.91.103/test.jsp
7-2
[root@localhost ~]#
