Keepalived 安裝與配置

一、環(huán)境說明

 1、操作系統(tǒng)內(nèi)核版本：CentOS7

 2、Keepalived軟件版本：keepalived-1.2.13-8.el7.x86_64

二、環(huán)境配置

1、主Keepalived服務器ip地址 192.168.170.156

2、備Keepalived服務器IP地址 192.168.170.157

3、Keepalived虛擬IP地址  192.168.170.160/  192.168.170.161

三、軟件下載地址

      http://www.keepalived.org/

四、安裝流程

  1、yum安裝

  [root@MDB02 ~]# yum install -y keepalived

   2、設(shè)置為服務，開機啟動

 [root@MDB02 ~]# vi /etc/rc.local #!/bin/bash# THIS FILE IS ADDED FOR COMPATIBILITY PURPOSES## It is highly advisable to create own systemd services or udev rules# to run scripts during boot instead of using this file.## In contrast to PRevious versions due to parallel execution during boot# this script will NOT be run after all other services.## Please note that you must run 'chmod +x /etc/rc.d/rc.local' to ensure# that this script will be executed during boot.touch /var/lock/subsys/local/bin/systemctl start  keepalived.service~"/etc/rc.local" 14L, 514C written[root@MDB02 ~]# /bin/systemctl start  keepalived.service五、主Keepalived配置

     1、修改配置文件

     ! Configuration File for keepalivedglobal_defs {   notification_email {     31601254@QQ.com   }   notification_email_from 31601254@qq.com   smtp_server 127.0.0.1   smtp_connect_timeout 30   router_id LVS_DEVEL}vrrp_instance VI_1 {    state MASTER    interface ens33      ##修改網(wǎng)卡    virtual_router_id 51    priority 100    advert_int 1    authentication {        auth_type PASS        auth_pass 1111    }    virtual_ipaddress {        192.168.170.160   ##群集虛擬IP        192.168.170.161    }}2、啟動keepalived

[root@MDB01 etc]# service keepalived start

3、查詢啟用狀態(tài)

[root@MDB01 etc]# ip add show1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00    inet 127.0.0.1/8 scope host lo       valid_lft forever preferred_lft forever    inet6 ::1/128 scope host        valid_lft forever preferred_lft forever2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000    link/ether 00:0c:29:65:43:9c brd ff:ff:ff:ff:ff:ff    inet 192.168.170.156/24 brd 192.168.170.255 scope global ens33       valid_lft forever preferred_lft forever    inet 192.168.170.160/32 scope global ens33       valid_lft forever preferred_lft forever    inet 192.168.170.161/32 scope global ens33       valid_lft forever preferred_lft forever    inet6 fe80::b9fe:6e0:ed29:1519/64 scope link        valid_lft forever preferred_lft forever    inet6 fe80::4791:4dd4:b281:ca5/64 scope link tentative dadfailed        valid_lft forever preferred_lft forever

六、備Keepalived配置

  1、修改配置文件! Configuration File for keepalivedglobal_defs {   notification_email {     31601254@qq.com   }   notification_email_from 31601254@qq.com   smtp_server 127.0.0.1   smtp_connect_timeout 30   router_id LVS_DEVEL}vrrp_instance VI_1 {    state BACKUP    interface ens33    virtual_router_id 51    priority 100    advert_int 1    authentication {        auth_type PASS        auth_pass 1111    }    virtual_ipaddress {       192.168.170.160        192.168.170.161    }}2、啟動keepalived

[root@MDB01 etc]# service keepalived start

[root@MDB01 ~]# ip add show1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00    inet 127.0.0.1/8 scope host lo       valid_lft forever preferred_lft forever    inet6 ::1/128 scope host        valid_lft forever preferred_lft forever2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000    link/ether 00:0c:29:56:82:5f brd ff:ff:ff:ff:ff:ff    inet 192.168.170.156/24 brd 192.168.170.255 scope global ens33       valid_lft forever preferred_lft forever    inet 192.168.170.160/32 scope global ens33       valid_lft forever preferred_lft forever    inet 192.168.170.161/32 scope global ens33       valid_lft forever preferred_lft forever    inet6 fe80::ebef:2358:8eab:4af8/64 scope link        valid_lft forever preferred_lft forever

七、啟動服務

[root@MDB02 ~]# service keepalived startRedirecting to /bin/systemctl start  keepalived.service

八、查看網(wǎng)卡信息

九、驗證測試

 可參考

 1、在主服務器上新建一個網(wǎng)頁，內(nèi)容為 192.168.111.223

 2、在備用服務器上新建一個網(wǎng)頁，內(nèi)容為 192.168.111.100

 3、啟動主備服務器的http服務和Keepalived服務

 4、通過瀏覽數(shù)，輸入虛擬IP地址 192.168.111.150

        頁面顯示為 192.168.111.223

5、關(guān)閉主服務器的Keepalived服務，通過瀏覽器輸入IP地址192.168.111.150

        頁面顯示為 192.168.111.100

6、再次啟動主服務器的Keepalived服務，通過瀏覽器輸入IP地址192.168.111.150

        頁面顯示為 192.168.111.223