1.前期准备工作
1.1 安装
1.2 copy两份tomcat
[root@localhost tomcat]# mkdir /usr/local/tomcat/tomcat9001
[root@localhost tomcat]# mkdir /usr/local/tomcat/tomcat9002
[root@localhost tomcat]# cp -Rf /usr/local/tomcat/apache-tomcat-8.0.49/* /usr/local/tomcat/tomcat9002
[root@localhost tomcat]# cp -Rf /usr/local/tomcat/apache-tomcat-8.0.49/* /usr/local/tomcat/tomcat9001
2.修改tomcat端口
[root@localhost tomcat]# vi tomcat9001/conf/server.xml
<Server port="18005" shutdown="SHUTDOWN">
//9001tomcat端口号修改为9001
<Connector port="9001" protocol="HTTP/1.1"
connectionTimeout="20000"
redirectPort="8443" />
//ajp连接器端口修改
<Connector port="18009" protocol="AJP/1.3" redirectPort="8443" />
---------------------------------------------------------------------------------------------------
[root@localhost tomcat]# vi tomcat9002/conf/server.xml
<Server port="28005" shutdown="SHUTDOWN">
//9001tomcat端口号修改为9002
<Connector port="9002" protocol="HTTP/1.1"
connectionTimeout="20000"
redirectPort="8443" />
//ajp连接器端口修改
<Connector port="28009" protocol="AJP/1.3" redirectPort="8443" />
2.2 测试两个tomcat是否能够启动成功
可以看到两个tomcat都启动成功了。
2.3 测试页面
接下来写两个测试页面用于区分。
index.html
页面1
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<title>我是tomcat9001</title>
</head>
<body>
<p5>我是tomcat9001</p5>
</body>
</html>
页面2
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<title>我是tomcat9002</title>
</head>
<body>
<p5>我是tomcat9002</p5>
</body>
</html>
3.配置nginx
接下来配置nginx负载均衡,找到nginx配置文件。在配置文件中http{}里加入集群配置:
#服务器的集群
upstream 192.168.2.160 { #服务器集群名字
server 192.168.2.160:9001 weight=1;
server 192.168.2.160:9002 weight=2;
}
服务器配置 weight是权重的意思,权重越大,分配的概率越高。
在server{}里加入:
location / {
proxy_pass http://192.168.2.160; #要与集群名相同
proxy_redirect default;
}
完整配置:
user www www;
worker_processes 2; #设置值和CPU核心数一致
error_log /usr/local/nginx/logs/nginx_error.log crit; #日志位置和日志级别
pid /usr/local/nginx/nginx.pid;
#Specifies the value for maximum file descriptors that can be opened by this process.
worker_rlimit_nofile 65535;
events
{
use epoll;
worker_connections 65535;
}
http
{
include mime.types;
default_type application/octet-stream;
log_format main '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" $http_x_forwarded_for';
#charset gb2312;
server_names_hash_bucket_size 128;
client_header_buffer_size 32k;
large_client_header_buffers 4 32k;
client_max_body_size 8m;
sendfile on;
tcp_nopush on;
keepalive_timeout 60;
tcp_nodelay on;
fastcgi_connect_timeout 300;
fastcgi_send_timeout 300;
fastcgi_read_timeout 300;
fastcgi_buffer_size 64k;
fastcgi_buffers 4 64k;
fastcgi_busy_buffers_size 128k;
fastcgi_temp_file_write_size 128k;
gzip on;
gzip_min_length 1k;
gzip_buffers 4 16k;
gzip_http_version 1.0;
gzip_comp_level 2;
gzip_types text/plain application/x-javascript text/css application/xml;
gzip_vary on;
#limit_zone crawler $binary_remote_addr 10m;
#服务器的集群
upstream 192.168.2.160 { #服务器集群名字
server 192.168.2.160:9001 weight=1;
server 192.168.2.160:9002 weight=2;
}
#下面是server虚拟主机的配置
server
{
listen 80;#监听端口
server_name localhost;#域名
location / {
proxy_pass http://192.168.2.160; #与集群名相同
proxy_redirect default;
}
index index.html index.htm index.php;
root /usr/local/nginx/html;#站点目录
location ~ .*\.(php|php5)?$
{
#fastcgi_pass unix:/tmp/php-cgi.sock;
fastcgi_pass 127.0.0.1:9000;
fastcgi_index index.php;
include fastcgi.conf;
}
location ~ .*\.(gif|jpg|jpeg|png|bmp|swf|ico)$
{
expires 30d;
# access_log off;
}
location ~ .*\.(js|css)?$
{
expires 15d;
# access_log off;
}
access_log off;
}
}
配置完毕,开始测试。
3.1 测试,启动nginx
[root@localhost conf]# /usr/local/nginx/sbin/nginx
启动完毕可以访问一下index页面,多刷新几次就会发现,权重比相对较高的节点,被访问的概率会更高。
到此完毕。