vip配置负载均衡

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网络小墨 2024-07-19 20:26:38

文章标签 vip配置负载均衡 nginx tomcat html 文章分类 运维

2.6.1 lvs+keepalived+nginx+tomcat实现高性能负载均衡集群-1

vip配置负载均衡_nginx

vip配置负载均衡_nginx_02

vip配置负载均衡_html_03

2.6.2 lvs+keepalived+nginx+tomcat实现高性能负载均衡集群-

一、设置VIP

1，手动添加vip

1,ifconfig查看当前活动网卡。如：eth0

2,执行

ifconfig eth0:1 192.168.1.22 broadcast 192.168.1.2 netmask 255.255.255.0 up

进行vip添加

eth0:1表示这个VIP绑定的目标网卡设备，192.168.1.22就是VIP的值，广播地址为192.168.1.2,子网掩码为：255.255.255.0，up表示立即启用这个VIP。

3，执行ifconfig查看是否生效

4，测试 ping 192.168.1.22

5,写在/etc/rc.local里进行开机自动设置

二、编译安装Nginx

安装前准备

对于nginx编译安装需要先安装编译的工具，然后再安装nginx依赖
yum -y install gcc gcc-c++ autoconf automake make
yum -y install zlib zlib-devel openssl openssl-devel pcre pcre-devel

下载nginx

获取nginx，官方地址

wget http://nginx.org/download/nginx-1.12.2.tar.gz

解压（/root/lua/nginx-1.12.2）

tar -zxvf nginx-1.12.2.tar.gz

安装

第一步是配置，第二步是编译安装

配置 nginx

#进入到nginx 解压目录

cd nginx-1.12.2

#配置nginx
#–prefix 指定安装的目录
#/usr/local/nginx-lb 是安装目录，不能和自己下载的文件目录重了
#./configure --prefix=/usr/local/nginx-lb

#带ssl stub_status模块添加strem模块 –with-stream，这样就能传输tcp协议了
#http_stub_status_module 状态监控
#http_ssl_module 配置https
#stream 配置tcp得转发
#http_gzip_static_module 压缩
#http_sub_module 替换请求

--prefix=/usr/local/nginx-lb --with-http_stub_status_module \
--with-http_ssl_module --with-stream -\
-with-http_gzip_static_module --with-http_sub_module

编译安装

#编译安装

make && make install

验证

安装成功后，会在./configure --prefix=/usr/local/nginx-lb，指定的目录/usr/local/nginx-lb创建4个文件夹。具体功能下面有介绍。
#启动 nginx服务

/usr/local/nginx-lb/sbin/nginx

#停止服务

/usr/local/nginx-lb/sbin/nginx -s stop

#重启服务

/usr/local/nginx-lb /sbin/nginx -s reload

#查看启动情况

ps –ef | grep nginx

#查看是否启动成功（ip需要替换为自己的服务器ip）

curl 192.168.1.100

#查看端口情况

netstat -ano|grep 80

#查看nginx版本

./sbin/nginx -V

二、安装jdk1.8和tomcat

省略…

三、配置nginx和tomcat负载均衡/反向代理

编辑nginx/conf/nginx.conf

cd /usr/local/nginx-lb/conf/
vi nginx.conf

worker_processes  1;
events {
    #工作模式及连接数上限
    use epoll;
    worker_connections  1024;
}
#设定http服务器，利用它的反向代理功能提供负载均衡支持
http {
    include       mime.types;
    default_type  application/octet-stream;
    #代理
    include proxy.conf;
    
    #设定请求缓冲
    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;
    tcp_nodelay     on;

    #keepalive_timeout  0;
    keepalive_timeout  65;

    #启动gzip压缩
    gzip  on;
    gzip_min_length  1k;
    gzip_buffers   4 16k;
    gzip_http_version  1.1;
    gzip_comp_level  2;
    gzip_types  text/plain application/x-javascript text/css  application/xml;
    gzip_vary on; 

    #此处为你tomcat的地址，可以写多个tomcat地址
    upstream tomcat_pool {
       server 192.168.1.101:8080 weight=4 max_fails=2 fail_timeout=30s;
       server 192.168.1.102:8080 weight=4 max_fails=2 fail_timeout=30s;
    }

    server {
        listen       80;
        server_name  localhost;

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

        #所有JSP的页面均交由tomcat处理
        location ~ \.(jsp|jspx|dp)?$ {
            proxy_set_header  Host $host;
            proxy_set_header  X-Real-IP $remote_addr; 
            proxy_pass http://tomcat_pool;
        }

        #设定访问静态文件直接读取不经过tomcat
        location ~ .*\.(htm|html|gif|jpg|jpeg|png|bmp|swf|ioc|rar|zip|txt|flv|mid|doc|ppt|pdf|xls|mp3|wma)$ {
            expires  30d;
        }

        location ~ .*\.(js|css)?$ {
            expires  1h;
        }        

        #设定访问日志的存放路径
        #access_log  logs/study.log main;

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

添加proxy.conf

vim /usr/local/nginx-lb/conf/proxy.conf
proxy_redirect off;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
client_max_body_size 10m;
client_body_buffer_size 128k;
proxy_connect_timeout 90;
proxy_send_timeout 90;
proxy_read_timeout 90;
proxy_buffer_size 4k;
proxy_buffers 4 32k;
proxy_busy_buffers_size 64k;
proxy_temp_file_write_size 64k;

验证配置是否正确

/usr/local/nginx-lb/sbin/nginx -t
nginx: the configuration file /usr/local/nginx-lb/conf/nginx.conf syntax is ok
nginx: configuration file /usr/local/nginx-lb/conf/nginx.conf test is successful

简单测试

确保2个nginx都可以分别访问代理的两个tomcat 。
curl 192.168.1.101
ok，到此，nginx和tomcat 完成了。（注意：以上每组配置都一样）

四、安装lvs+keepalived

lvs master

安装ipvsadm、keepalived

yum -y install ipvsadm keepalived

开启路由转发

永久开启

echo "net.ipv4.ip_forward = 1" >> /etc/sysctl.conf

加载,使得配置文件立即生效

sysctl -p

检查

sysctl -a | grep "ip_forward"
net.ipv4.ip_forward = 1
net.ipv4.ip_forward_use_pmtu = 0

使用keepalived来管理lvs（master）

vim /etc/keepalived/keepalived.conf

global_defs
{
router_id master_210
}
 
vrrp_instance aiyou {
state MASTER          #备份服务器上将MASTER改为 BACKUP
interface eth0          #服务器网卡名字，ip addr可以查看
virtual_router_id 100    #这个数值 master和slave必须统一
priority 100            #这个数值决定哪台服务器是master,备份服务上将100改为90 
advert_int 1           #设定master与backup负载均衡器之间同步检查的时间间隔，单位是秒
authentication {
        auth_type PASS
        auth_pass 123456
        }
# 虚拟IP地址列表，即VIP，如果有多个VIP，继续换行填写
virtual_ipaddress {
        192.168.146.200
        }
}

virtual_server 192.168.146.200 80 {
            delay_loop 3             #每隔3秒查询realserver状态
            lb_algo wrr              #wrr算法
            lb_kind DR               #DR模式（Direct Route）
#            persistence_timeout 60   #同一IP的连接60秒内被分配到同一台realserver
            protocol TCP             #用TCP协议检查realserver状态
real_server 192.168.146.139 80 {
                weight 1            #权重（权重越高处理的请求越多）
                TCP_CHECK {
                    connect_timeout 3   #3秒无响应超时
                    nb_get_retry 3       #重试次数
                    delay_before_retry 3  #重试间隔
                    connect_port 80     #监测端口
                }
            }
real_server 192.168.146.140 80 {
                weight 1
                TCP_CHECK {
                    connect_timeout 3
                    nb_get_retry 3
                    delay_before_retry 3
                    connect_port 80
                }
            }
}

重启keepalived

systemctl restart keepalived

查看状态

systemctl status keepalived

lvs slave

安装ipvsadm、keepalived

yum -y install ipvsadm keepalived

开启路由转发

永久开启

echo "net.ipv4.ip_forward = 1" >> /etc/sysctl.conf

加载,使得配置文件立即生效

sysctl -p

检查

sysctl -a | grep "ip_forward"
net.ipv4.ip_forward = 1
net.ipv4.ip_forward_use_pmtu = 0

使用keepalived来管理lvs（slave）

vim /etc/keepalived/keepalived.conf

global_defs
{
router_id slave_211
}
 
vrrp_instance aiyou {
state MASTER
interface eth0
virtual_router_id 100    #这个数值 master和slave必须统一
priority 150     #这个数值决定哪台服务器是master 这里我们比master数值低，所以角色是backup，
advert_int 1
authentication {
        auth_type PASS
        auth_pass 123456
        }
virtual_ipaddress {
        192.168.146.200
        }
}
virtual_server 192.168.146.200 80 {
            delay_loop 6
            lb_algo wrr
            lb_kind DR
#            persistence_timeout 50
            protocol TCP
real_server 192.168.146.139 80 {
                weight 1
                TCP_CHECK {
                    connect_timeout 3
                    nb_get_retry 3
                    delay_before_retry 3
                    connect_port 80
                }
            }
real_server 192.168.146.140 80 {
                weight 1
                TCP_CHECK {
                    connect_timeout 3
                    nb_get_retry 3
                    delay_before_retry 3
                    connect_port 80
                }
            }
}

重启keepalived

systemctl restart keepalived

查看状态

systemctl status keepalived

nginx 1

nginx上要跑个脚本

vi /etc/init.d/realserver

#!/bin/bash  
#   
# Script to start LVS DR real server.   
# description: LVS DR real server   
#   
.  /etc/rc.d/init.d/functions
VIP=192.168.1.222   #这里根据需要改成自己的VIP地址
host=`/bin/hostname`
case "$1" in  
start)   
       # Start LVS-DR real server on this machine.   
        /sbin/ifconfig lo down   
        /sbin/ifconfig lo up   
        echo 1 > /proc/sys/net/ipv4/conf/lo/arp_ignore   
        echo 2 > /proc/sys/net/ipv4/conf/lo/arp_announce   
        echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore   
        echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce
        /sbin/ifconfig lo:0 $VIP broadcast $VIP netmask 255.255.255.255 up  
        /sbin/route add -host $VIP dev lo:0
;;  
stop)
        # Stop LVS-DR real server loopback device(s).  
        /sbin/ifconfig lo:0 down   
        echo 0 > /proc/sys/net/ipv4/conf/lo/arp_ignore   
        echo 0 > /proc/sys/net/ipv4/conf/lo/arp_announce   
        echo 0 > /proc/sys/net/ipv4/conf/all/arp_ignore   
        echo 0 > /proc/sys/net/ipv4/conf/all/arp_announce
;;  
status)
        # Status of LVS-DR real server.  
        islothere=`/sbin/ifconfig lo:0 | grep $VIP`   
        isrothere=`netstat -rn | grep "lo:0" | grep $VIP`   
        if [ ! "$islothere" -o ! "isrothere" ];then   
            # Either the route or the lo:0 device   
            # not found.   
            echo "LVS-DR real server Stopped."   
        else   
            echo "LVS-DR real server Running."   
        fi   
;;   
*)   
            # Invalid entry.   
            echo "$0: Usage: $0 {start|status|stop}"   
            exit 1   
;;   
esac

赋予可执行权限，并启动脚本

cp realserver /etc/init.d/
chmod 755 /etc/init.d/realserver
service realserver start

nginx 2（每个nginx步骤和内容一样）
nginx上要跑个脚本

vi /etc/init.d/realserver

#!/bin/bash  
#   
# Script to start LVS DR real server.   
# description: LVS DR real server   
#   
.  /etc/rc.d/init.d/functions
VIP=192.168.1.222   #这里根据需要改成自己的VIP地址
host=`/bin/hostname`
case "$1" in  
start)   
       # Start LVS-DR real server on this machine.   
        /sbin/ifconfig lo down   
        /sbin/ifconfig lo up   
        echo 1 > /proc/sys/net/ipv4/conf/lo/arp_ignore   
        echo 2 > /proc/sys/net/ipv4/conf/lo/arp_announce   
        echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore   
        echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce
        /sbin/ifconfig lo:0 $VIP broadcast $VIP netmask 255.255.255.255 up  
        /sbin/route add -host $VIP dev lo:0
;;  
stop)
        # Stop LVS-DR real server loopback device(s).  
        /sbin/ifconfig lo:0 down   
        echo 0 > /proc/sys/net/ipv4/conf/lo/arp_ignore   
        echo 0 > /proc/sys/net/ipv4/conf/lo/arp_announce   
        echo 0 > /proc/sys/net/ipv4/conf/all/arp_ignore   
        echo 0 > /proc/sys/net/ipv4/conf/all/arp_announce
;;  
status)
        # Status of LVS-DR real server.  
        islothere=`/sbin/ifconfig lo:0 | grep $VIP`   
        isrothere=`netstat -rn | grep "lo:0" | grep $VIP`   
        if [ ! "$islothere" -o ! "isrothere" ];then   
            # Either the route or the lo:0 device   
            # not found.   
            echo "LVS-DR real server Stopped."   
        else   
            echo "LVS-DR real server Running."   
        fi   
;;   
*)   
            # Invalid entry.   
            echo "$0: Usage: $0 {start|status|stop}"   
            exit 1   
;;   
esac

赋予可执行权限，并启动脚本

cp realserver /etc/init.d/
chmod 755 /etc/init.d/realserver
service realserver start

tomcat 采用一机多实例模式（非多虚拟主机）,部署这里省略

测试
master上验证

ipvsadm -ln

salve上验证

ipvsadm -ln

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