您的位置:首页 > 运维架构 > Tomcat

Nginx+Tomcat实现负载均衡集群

2018-01-29 00:00 686 查看

1.前期准备工作

1.1 安装

Nginx安装

Tomcat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;
3ff0
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。
内容来自用户分享和网络整理,不保证内容的准确性,如有侵权内容,可联系管理员处理 点击这里给我发消息
标签:  Nginx Tomcat 负载均衡