2017最新nginx+keepalived+centos7安裝配置過程

時間 2020-06-05

標籤最新 nginx+keepalived+centos7 nginx keepalived centos 安裝配置過程欄目 Nginx 简体版

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1、地址規劃nginx

nginx1-10.1.1.2c++

nginx2-10.1.1.3centos

vip-10.1.1.4bash

修改兩臺主機名：hostnamectl set-hostname nginx1ide

hostnamectl set-hostname nginx2oop

2、在nginx1和nginx2上分別安裝nginx，這裏用的是最新的穩定版ui

先安裝依賴包centos7

yum -y install gcc gcc++ prce pcre-devel zlib zlib-devel openssl openssl-develspa

官網下載nginx-1.10.3源碼包orm

    tar xzvf nginx-1.10.3.tar.gz
   mkdir -p /usr/local/nginx
   mv nginx-1.10.3 /usr/local/
    cd /usr/local/nginx-1.10.3/
./configure --prefix=/usr/local/nginx
   make && make install

安裝後註冊nginx服務，使其能夠開機啓動
vi /lib/systemd/system/nginx.service
[Unit]
Description=nginx
After=network.target

[Service]
Type=forking
ExecStart=/usr/local/nginx/sbin/nginx
ExecReload=/usr/local/nginx/sbin/nginx -s reload
ExecStop=/usr/local/nginx/sbin/nginx -s quit
PrivateTmp=true

[Install]
WantedBy=multi-user.target

設置nginx開機啓動命令： systemctl enable nginx

啓動nginx systemctl start nginx

3、分別在nginx1-2上安裝keepalived

centos7能夠直接yum安裝keepalived,注意配置文件和腳本，不然不成功

keepalived -v
Keepalived v1.2.13 (11/05,2016) 版本信息

yum -y install keepalived
mv /etc/keepalived/keepalived.conf /etc/keepalived/keepalived.conf.orginal
vi /etc/keepalived/keepalived.conf

nginx1-master配置文件以下（爲了方便你的粘貼就不上截圖了）：
more /etc/keepalived/keepalived.conf （nginx1-master）

! Configuration file for keepalived
global_defs {
   notification_email {
    admin@wf.com
        }
   notification_email_from admin@wf.com
   smtp_server 127.0.0.1
   smtp_connect_timeout 30
   router_id LVS_DEVEL
}
#監控nginx
vrrp_script chk_nginx {
    script "/etc/keepalived/script/monitor_nginx.sh"
    interval 2
    weight 2
}

vrrp_instance VI_1 {
    state MASTER #主從設置 MASTER
    interface eth1 #網卡名
    virtual_router_id 51
    mcast_src_ip 10.1.1.2 #本機ip
    priority 51 #從機小於主機
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass chtopnet
    }
    virtual_ipaddress {
        10.1.1.4 #VIP 的IP
    }
    track_script {
        chk_nginx #檢測腳本
    }

}

virtual_server 10.1.1.4 80 {
    delay_loop 6
    lb_algo rr
    lb_kind DR
    persistence_timeout 50
    protocol TCP

    real_server 10.1.1.2 80 {
        weight 3
        TCP_CHECK {
            connect_timeout 10
            nb_get_retry 3
            delay_before_retry 3
            connect_port 80
        }
    }

nginx2-backup配置文件以下：

more /etc/keepalived/keepalived.conf （nginx1-backup）

! Configuration file for keepalived
global_defs {
   notification_email {
    admin@wf.com
        }
   notification_email_from admin@wf.com
   smtp_server 127.0.0.1
   smtp_connect_timeout 30
   router_id LVS_DEVEL
}
#監控NGINX
vrrp_script chk_nginx {
    script "/etc/keepalived/script/monitor_nginx.sh"
    interval 2
    weight 2
}

vrrp_instance VI_1 {
    state BACKUP #主從設置 MASTER
    interface eth1 #網卡名
    virtual_router_id 50
    mcast_src_ip 10.1.1.2 #本機ip
    priority 50 #從機小於主機
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass chtopnet
    }
    virtual_ipaddress {
        10.1.1.4 #VIP 的IP
    }
    track_script {
        chk_nginx #檢測腳本
    }

}

virtual_server 10.1.1.4 80 {
    delay_loop 6
    lb_algo rr
    lb_kind DR
    persistence_timeout 50
    protocol TCP

    real_server 10.1.1.2 80 {
        weight 3
        TCP_CHECK {
            connect_timeout 10
            nb_get_retry 3
            delay_before_retry 3
            connect_port 80
        }
    }
    real_server 10.1.1.3 80 {
        weight 3
        TCP_CHECK {
            connect_timeout 10
            nb_get_retry 3
            delay_before_retry 3
            connect_port 80
        }
    }
}
監測腳本以下（nginx1-2相同）：

more /etc/keepalived/monitor_nginx.sh

#!/bin/bash
A=`ps -C nginx –no-header |wc -l`
if [ $A -eq 0 ];then
    /usr/local/nginx/sbin/nginx
    sleep 2
    if [ `ps -C nginx --no-header |wc -l` -eq 0 ];then
        systemctl stop keepalived
    fi
fi

hostnamectl set-hostname nginx2
# 安裝ipvsadm ()

# yum install ipvsadm

在兩臺nginx分別執行腳本，綁定虛擬IP，抑制ARP廣播

#!/bin/bash
#description: Config realserver

VIP=10.1.1.4 /etc/rc.d/init.d/functions case "$1" instart) /sbin/ifconfig lo:0 $VIP netmask 255.255.255.255 broadcast $VIP /sbin/route add -host $VIP dev lo:0 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 sysctl -p >/dev/null 2>&1 echo "RealServer Start OK" ;;stop) /sbin/ifconfig lo:0 down /sbin/route del $VIP >/dev/null 2>&1 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 echo "RealServer Stoped" ;;*) echo "Usage: $0 {start|stop}" exit 1esac exit 0