一.安装负载均衡的Lnmt
lmnt:clent->nginx->reverse proxy->tomcat (http connector )
1.下载安装
nginx-1.6.2-1.el6.ngx.x86_64.rpm
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[[email protected] ~]# rpm -ivh nginx-1.6.2-1.el6.ngx.x86_64.rpm
warning: nginx-1.6.2-1.el6.ngx.x86_64.rpm: Header V4 RSA/SHA1 Signature, key ID 7bd9bf62: NOKEY
Preparing… ########################################### [100%]
1:nginx ########################################### [100%]
———————————————————————-
Thanks for using nginx!
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2.启动nginx
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[[email protected] nginx]# /etc/init.d/nginx start
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3.让nginx以反代模式工作，修改配置文件
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[[email protected] conf.d]# vim default.conf
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[cc lang=”bash”]
location / {
# root /usr/share/nginx/html; //禁用该段
proxy_pass http://172.16.249.249:8080/; //反代指向tomcat
index index.html index.htm;
}
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4.重新载入nginx之后，再次访问。打开的将是后端的tomcat。
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[[email protected] conf.d]# /etc/init.d/nginx reload
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5.在nginx主配置文件中定义集群
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[[email protected] nginx]# vim nginx.conf
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upstream tomcatser{
server 172.16.249.249:8080;
server 172.16.249.113:8080;
}
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6.在default文件的localtion中调用
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location / {
# root /usr/share/nginx/html;
proxy_pass http://tomcatser; //主要设置这段
index index.html index.htm;
}
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7.测试访问
http://172.16.249.249
动静分离：静态内容前段响应，动态内容交给后端的172.16.249.249:8080
[cc lang=”bash”]
location / {
root /usr/share/nginx/html;
# proxy_pass http://tomcatser;
index index.jsp index.html index.htm;
}
location ~* \.(jsp|do)$ {
proxy_pass http://172.16.249.249:8080;
}
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二.安装Lamt
lamt: client->httpd->reverse proxy -> tomcat
基于http connector: http协议
1.httpd：需要装载mod_proxy模块，否则无法支持代理。
mod_proxy_http，mod_proxy_ajp ajp是独有协议，只能支持httpd到tomcat之间通讯。
2.模块检查
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[[email protected] etc]# httpd -M 查看模块命令
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proxy_module (shared)
proxy_http_module (shared)
3.编辑主配置文件，把中心主机注释掉
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[[email protected] conf]# vim httpd.conf
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#DocumentRoot “/var/www/html”
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4.添加配置文件
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[[email protected] conf.d]# vim http-tomcat.conf
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NameVirtualHost *：80
<VirtualHost *：80>
ServerName www.a.com
proxyVia On //经过服务器代理响应
ProxyRequests Off//关闭正向代理
ProxyPreserveHost On//启用反向代理
<Proxy * > //对所有人开放代理权限
Order deny,allow
Allow from all
</proxy>
ProxyPass /status ! //该页面不做代理
ProxyPass / http://172.16.249.249:8080/
ProxyPassReverse / http://172.16.249.249:8080/
<Location />
Order deny,allow
Allow from all
</Location>
</VirtualHost>
5.启动httpd并测试访问即可
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[[email protected] conf.d]# service httpd start
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http://172.16.249.249/
基于ajp connect:ajp协议
1.赋值配置文件，并加入下面配置
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[[email protected] conf.d]# cp http-tomcat.conf ajp-tomcat.conf
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[[email protected] conf.d]# mv http-tomcat.conf http-tomcat.conf.bak
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[[email protected] conf.d]# vim ajp-tomcat.conf
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NameVirtualHost *:80
<VirtualHost *:80>
ServerName www.a.com
proxyVia On
ProxyRequests Off
ProxyPreserveHost On
<Proxy * >
Order deny,allow
Allow from all
</proxy>
ProxyPass /status !
ProxyPass / ajp://172.16.249.249:8009/ //就此处的ajp协议和8009端口不同，其他与http相同
ProxyPassReverse / ajp://172.16.249.249:8009/
<Location />
Order deny,allow
Allow from all
</Location>
</VirtualHost>
2.测试语法没问题后重启httpd，访问测试
[[email protected] conf.d]# httpd -t
http://172.16.249.249/
三.Server Status和Host-Manager管理
Server Status管理：
1）编辑配置文件，添加以下字段：
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[[email protected] conf]# vim tomcat-users.xml
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<role rolename=”manager-gui”/>
<user username=”admin” password=”admin” roles=”manager-gui”/>
2）重新启动tomcat即可输入帐号密码访问。
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[[email protected] concatalina.sh stop
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[cc lang=”bash”]
[[email protected] concatalina.sh startl
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Host-Manager管理：可以在此模式下进行程序热部署
[部署方式]
冷部署：在tomcat启动之前进行的部署。
热部署：在不停止tomcat的前提下进行部署。
1.编辑配置文件，添加以下字段：
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[[email protected] conf]# vim tomcat-users.xml
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<role rolename=”admin-gui”/>
<user username=”tomcat” password=”tomcat” roles=”admin-gui”/>
2）重新启动tomcat即可输入帐号密码访问。
[cc lang=”bash”]
[[email protected] concatalina.sh stop
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[cc lang=”bash”]
[[email protected] concatalina.sh startl
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