Nginx+keepalived的高可用集群(二、nginx部署)

1.nginx下载

Nginx官方下载地址：http://nginx.org/en/download.html

本次下载的是nginx-1.14.0.tar.gz版本。

上传到服务器后解压到当前目录：

tar -zxvf nginx-1.14.0.tar.gz

2.下载依赖库

使用yum命令安装nginx的依赖库

yum -y install gcc pcre pcre-devel zlib zlib-devel openssl openssl-devel

注意:如果是内网环境，自行下载rpm包，执行离线安装。可以参考博客：https://www.cnblogs.com/sybblogs/p/6085314.html

执行命令检查依赖库是否正确,make之后就会在后面设置的地址编译并安装nginx

#进入nginx-1.14.0目录
cd  nginx-1.14.0
#检查依赖库是否正确
./configure --prefix=/usr/local/nginx
#编译并安装
make && make install　

 3.启动nginx

启动nginx 

#进入nginx安装目录
cd /usr/local/nginx/sbin
#启动nginx
./nginx　

启动后我们可以看到ngnix有两个进程，master进程和worker进程

启动成功后，我们可以通过浏览器访问

其他常用命令：

 停止命令

./nginx -s stop

重启命令

./nginx -s reload

4.配置文件　

演示是在90服务器上进行配置的，91,92两台服务器配置完全一样。

接下来进行配置nginx.conf

#进入安装目录
cd  /usr/local/nginx/conf　　

采用的配置是负载均衡ip_hash方式。配置如下：

#用户组，也可以使用root用户
#user  nobody;

# 与服务器核心数量一致，一般现在电脑内核4核8线程，8核16线程，如果CPU的使用率大，可以设置成内核*2，进程则会有多个worker
worker_processes  1;

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

# 进程号保存地址
#pid        logs/nginx.pid;

events {
    worker_connections  1024;
}

http {
    include       mime.types;
    default_type  application/octet-stream;

	#日志格式 main 访问地址，时间，浏览器等信息
    #log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
    #                  '$status $body_bytes_sent "$http_referer" '
    #                  '"$http_user_agent" "$http_x_forwarded_for"';

	#全局日志保存地址，也可以在server里面单独配置
    #access_log  logs/access.log  main;

    sendfile        on;
    #tcp_nopush     on;

    #keepalive_timeout  0;
    keepalive_timeout  65;

    #gzip  on;
	
	#webservice负载均衡配置
	upstream bsoft_webservice{
		ip_hash;
		server  196.168.0.97:9528;
		server  196.168.0.98:9528;
		server  196.168.0.99:9528;
		server  196.168.0.100:9528;
		server  196.168.0.101:9528;
	}
	
    server {
        #平台对外的端口
        listen  9528;  
        #对应的域名  
        #server_name localhost;  
	
		# 拦截规则，拦截跳转地址
		location / {  
              proxy_pass   http://bsoft_webservice;
			  proxy_set_header   Host             $host:$server_port; 
			  proxy_set_header   X-Real-IP        $remote_addr; 
			  proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for; 
				proxy_connect_timeout       60;
				proxy_read_timeout          60;
				proxy_send_timeout          60;
        }
        error_page 500 502 503 504 /50x.html;
        location = /50x.html {
			root html;
        }
    }

	#http负载均衡配置
	upstream bsoft_http{
		ip_hash;
		server  196.168.0.97:9526;
		server  196.168.0.98:9526;
		server  196.168.0.99:9526;
		server  196.168.0.100:9526;
		server  196.168.0.101:9526;
	}
	
    server {
        #平台对外的端口
        listen  9526;  
        #对应的域名  
        #server_name localhost;  
	
		location / {  
              proxy_pass   http://bsoft_http;
			  proxy_set_header   Host             $host:$server_port; 
			  proxy_set_header   X-Real-IP        $remote_addr; 
			  proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for; 
				proxy_connect_timeout       60;
				proxy_read_timeout          60;
				proxy_send_timeout          60;
        }
        error_page 500 502 503 504 /50x.html;
        location = /50x.html {
			root html;
        }
    }

	#测评负载均衡配置
	upstream bsoft_ceping{
		ip_hash;
		server  196.168.0.97:9527;
		server  196.168.0.98:9527;
		server  196.168.0.99:9527;
		server  196.168.0.100:9527;
		server  196.168.0.101:9527;
	}
	
    server {
        #平台对外的端口
        listen  9527;  
        #对应的域名  
        #server_name localhost;  
	
		location / {  
              proxy_pass   http://bsoft_ceping;
			  proxy_set_header   Host             $host:$server_port; 
			  proxy_set_header   X-Real-IP        $remote_addr; 
			  proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for; 
				proxy_connect_timeout       60;
				proxy_read_timeout          60;
				proxy_send_timeout          60;
        }
        error_page 500 502 503 504 /50x.html;
        location = /50x.html {
			root html;
        }
    }
		
	#XMLwebService负载均衡配置
	upstream bsoft_XMLwebService{
		ip_hash;
		server  196.168.0.97:9529;
		server  196.168.0.98:9529;
		server  196.168.0.99:9529;
		server  196.168.0.100:9529;
		server  196.168.0.101:9529;
	}
	
    server {
        #平台对外的端口
        listen  9529;  
        #对应的域名  
        #server_name localhost;  
	
		location / {  
              proxy_pass   http://bsoft_XMLwebService;
			  proxy_set_header   Host             $host:$server_port; 
			  proxy_set_header   X-Real-IP        $remote_addr; 
			  proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for; 
				proxy_connect_timeout       60;
				proxy_read_timeout          60;
				proxy_send_timeout          60;
        }
        error_page 500 502 503 504 /50x.html;
        location = /50x.html {
			root html;
        }
    }
		

    server {
        listen       80;
        server_name  localhost;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

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

        #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;
    #    }
    #}
}　　

配置完后进行重启命令

#进入sbin目录
cd /usr/local/nginx/sbin
#执行nginx重启命令
./nginx -s reload　　

 启动成功后，来看看nginx实现负载均衡的效果

nginx的相关详细配置介绍可以参考学霸王先森博客：

https://www.cnblogs.com/Unlimited-Blade-Works/p/12599694.html