Keepalived 安装与配置

2019-11-08 20:45:55

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Keepalived 安装与配置

一、环境说明

1、操作系统内核版本：CentOS7

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

二、环境配置

1、主Keepalived服务器ip地址 192.168.170.156

2、备Keepalived服务器IP地址 192.168.170.157

3、Keepalived虚拟IP地址 192.168.170.160/ 192.168.170.161

三、软件下载地址

http://www.keepalived.org/

四、安装流程

1、yum安装

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

2、设置为服务，开机启动

[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 ##修改网卡 virtual_router_id 51 priority 100 advert_int 1 authentication { auth_type PASS auth_pass 1111 } virtual_ipaddress { 192.168.170.160 ##群集虚拟IP 192.168.170.161 }}2、启动keepalived

[root@MDB01 etc]# service keepalived start

3、查询启用状态

[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、备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、启动keepalived

[root@MDB01 etc]# service keepalived start

3、查询启动状态

[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、启动服务

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

八、查看网卡信息

九、验证测试

可参考

1、在主服务器上新建一个网页，内容为 192.168.111.223

2、在备用服务器上新建一个网页，内容为 192.168.111.100

3、启动主备服务器的http服务和Keepalived服务

4、通过浏览数，输入虚拟IP地址 192.168.111.150

页面显示为 192.168.111.223

5、关闭主服务器的Keepalived服务，通过浏览器输入IP地址192.168.111.150

页面显示为 192.168.111.100