centos7实现负载均衡

	作用	环境
windows	测试
192.168.33.158	LVS负载均衡	centos7
192.168.33.157	web服务器1--rs1	nginx1.22centos7
192.168.33.156	web服务器2--rs2	Apache2.4 redhat9

1.1 配置lvs负载均衡服务

1.1.1 下载ipvsadm

1.1.2 增加vip

ifconfig ens33:110 192.168.33.100

注意增加的IP和本机的IP需要在同一个网段。

1.1.3 配置ipvsadm

1.2 配置rs1

1.2.1 编写测试页面

1.2.2 手工在RS端绑定VIP、添加路由

1.2.3 抑制arp响应

1.3 配置rs2

配置和rs1一样省略。

注意调整内核参数关闭arp响应的时候redhat和centos的网络设备名称是不一样的。

1.4 测试

二、配置nginx负载均衡。

2.1 配置好环境

	作用	环境
windows	测试
192.168.33.158	nginx负载均衡	nginx1.22centos7
192.168.33.157	web服务器1--web1	nginx1.22centos7
192.168.33.156	web服务器2--web2	Apache2.4 redhat9

确保所有的防火墙和selinx都是关闭的。

2.2 web服务器上添加测试页面

web1

web2

2.3 配置负载均衡器

主配置文件/usr/local/nginx/conf/nginx.conf

user nginx;
worker_processes  1;

#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;

#pid        logs/nginx.pid;


events {
    worker_connections  1024;
}


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"';

    #access_log  logs/access.log  main;

    sendfile        on;
    #tcp_nopush     on;

    #keepalive_timeout  0;
    keepalive_timeout  65;

    #gzip  on;
    include /etc/nginx/conf.d/*.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 / {
	#   root /data/web2;
	#   index index.html index.htm;
	#   auth_basic "Restricted";
	#   auth_basic_user_file /data/web2/webpass;
	#}
	location ~ \.php$ {
		root html;
		fastcgi_pass 127.0.0.1:9000;
		fastcgi_index index.php;
		fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
		include	fastcgi_params;
	}

        #error_page  404              /404.html;

        # redirect server error pages to the static page /50x.html
        #
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }

        # proxy the PHP scripts to Apache listening on 127.0.0.1:80
        #
        #location ~ \.php$ {
        #    proxy_pass   http://127.0.0.1;
        #}

        # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
        #
        #location ~ \.php$ {
        #    root           html;
        #    fastcgi_pass   127.0.0.1:9000;
        #    fastcgi_index  index.php;
        #    fastcgi_param  SCRIPT_FILENAME  /scripts$fastcgi_script_name;
        #    include        fastcgi_params;
        #}

        # deny access to .htaccess files, if Apache's document root
        # concurs with nginx's one
        #
        #location ~ /\.ht {
        #    deny  all;
        #}
    }
    # another virtual host using mix of IP-, name-, and port-based configuration
    #
    #server {
    #    listen       8000;
    #    listen       somename:8080;
    #    server_name  somename  alias  another.alias;

    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}


    # HTTPS server
    #
    #server {
    #    listen       443 ssl;
    #    server_name  localhost;

    #    ssl_certificate      cert.pem;
    #    ssl_certificate_key  cert.key;

    #    ssl_session_cache    shared:SSL:1m;
    #    ssl_session_timeout  5m;

    #    ssl_ciphers  HIGH:!aNULL:!MD5;
    #    ssl_prefer_server_ciphers  on;

    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}

}

子配置文件/etc/nginx/conf.d/vhost.conf

server {
	listen 80;
	server_name test.ng.test;
	location / {
	  proxy_pass http://web_server;
	}

}

upstream web_server {
	server 192.168.33.157;
	server 192.168.33.156;
}