keepalived安装（2.6.32内核）

Myth丶恋晨 2022-07-14 07:11 92阅读 0赞

http://www.cnblogs.com/zzzhfo/p/6070065.html

两台虚拟机

两台配置操作一样

环境配置

[root@lb01 /]# yum -y install openssl openssl-devel

[root@lb01 /]# yum -y install kernel-devel

做个软连接  用tab键补全2.6.32-642.6.2.el6.x86\_64

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[root@lb01 /]# ln -s /usr/src/kernels/2.6.32-642.6.2.el6.x86_64/ /usr/src/linux
    [root@lb01 /]# ls -l /usr/src/
    total 8
    drwxr-xr-x. 2 root root 4096 Sep 23  2011 debug
    drwxr-xr-x. 3 root root 4096 Oct  6 11:05 kernels
    lrwxrwxrwx  1 root root   43 Oct  6 11:09 linux -> /usr/src/kernels/2.6.32-642.6.2.el6.x86_64/

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下载软件、解压、配置、编译、安装

[root@lb01 /]# wget http://www.keepalived.org/software/keepalived-1.2.16.tar.gz

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[root@lb01 /]# tar zxvf keepalived-1.2.16.tar.gz
    [root@lb01 /]# cd keepalived-1.2.16
    [root@lb01 keepalived-1.2.16]# ./configure
    Keepalived configuration
    ------------------------
    Keepalived version       : 1.2.16
    Compiler                 : gcc
    Compiler flags           : -g -O2
    Extra Lib                : -lssl -lcrypto -lcrypt 
    Use IPVS Framework       : Yes
    IPVS sync daemon support : Yes
    IPVS use libnl           : No
    fwmark socket support    : Yes
    Use VRRP Framework       : Yes
    Use VRRP VMAC            : Yes
    SNMP support             : No
    SHA1 support             : No
    Use Debug flags          : No
    [root@lb01 keepalived-1.2.16]# make
    [root@lb01 keepalived-1.2.16]# make install

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配置规范启动

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[root@lb01 keepalived-1.2.16]# cp /usr/local/etc/rc.d/init.d/keepalived /etc/init.d/      #生成启动脚本
    [root@lb01 keepalived-1.2.16]# cp /usr/local/etc/sysconfig/keepalived /etc/sysconfig/   #配置启动脚本的参数
    [root@lb01 keepalived-1.2.16]# mkdir /etc/keepalived   #创建默认的keepalived配置文件路径
    [root@lb01 keepalived-1.2.16]# cp /usr/local/etc/keepalived/keepalived.conf  /etc/keepalived/   #把keepalived.conf模板拷贝到/etckeepalived下
    [root@lb01 keepalived-1.2.16]# cp /usr/local/sbin/keepalived /usr/sbin/
    [root@lb01 keepalived-1.2.16]# /etc/init.d/keepalived start
    Starting keepalived:                                       [  OK  ]
    [root@lb01 keepalived-1.2.16]# ps -ef | grep keep
    root      3490     1  0 11:36 ?        00:00:00 keepalived -D
    root      3492  3490  0 11:36 ?        00:00:00 keepalived -D
    root      3493  3490  0 11:36 ?        00:00:00 keepalived -D
    root      3496  1537  0 11:36 pts/0    00:00:00 grep keep
    [root@lb01 keepalived-1.2.16]# /etc/init.d/keepalived stop
    Stopping keepalived:                                       [  OK  ]

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配置文件详解

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[root@lb01 keepalived-1.2.16]# cat /etc/keepalived/keepalived.conf 
    ! Configuration File for keepalived           #注释
    
    global_defs {                   #全局配置
       notification_email {　　　　　　#邮件报警
         acassen@firewall.loc     #收件人
         failover@firewall.loc　　 #收件人
         sysadmin@firewall.loc　　　#收件人
       }
       notification_email_from Alexandre.Cassen@firewall.loc     #发件人
       smtp_server 192.168.200.1     #邮件服务器地址
       smtp_connect_timeout 30　　　　#超时时间
       router_id LVS_DEVEL           #keepavlied ID
    }
    
    vrrp_instance VI_1 {　　　　　　　　#VRRP的实例
        state MASTER　　　　　　　　　　 #服务器的状态
        interface eth0　　　　　　　　   #通信的端口
        virtual_router_id 51　　　　　　#这个实例的ID
        priority 100　　　　　　　　　　 #优先级
        advert_int 1　　　　　　　　　　　#心跳的间隔
        authentication { 　　　　　　#通信的密钥对
            auth_type PASS
            auth_pass 1111　　　　#越简单越好 保持默认就行
        }
        virtual_ipaddress {　　　　#VIP地址
            192.168.200.16
            192.168.200.17
            192.168.200.18
        }
    }

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修改配置文件

先备份一个配置文件

lb01配置文件

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[root@lb01 keepalived-1.2.16]# cd /etc/keepalived/
    [root@lb01 keepalived]# cp keepalived.conf keepalived.conf.bak
    [root@lb01 keepalived]# vim keepalived.conf
    ! Configuration File for keepalived
    
    global_defs {
       notification_email {
         acassen@firewall.loc
         failover@firewall.loc
         sysadmin@firewall.loc
       }
       notification_email_from Alexandre.Cassen@firewall.loc
       smtp_server 192.168.200.1
       smtp_connect_timeout 30
       router_id LVS_01
    }
    
    vrrp_instance VI_1 {
        state MASTER
        interface eth0
        virtual_router_id 51
        priority 150
        advert_int 1
        authentication {
            auth_type PASS
            auth_pass 1111
        }
        virtual_ipaddress {
            192.168.119.150/24
        }
    }

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lb02配置文件

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[root@lb02 keepalived-1.2.16]# cd /etc/keepalived/
    [root@lb02 keepalived]# cp keepalived.conf keepalived.conf.bak
    [root@lb02 keepalived]# vim keepalived.conf
    ! Configuration File for keepalived
    
    global_defs {
       notification_email {
         acassen@firewall.loc
         failover@firewall.loc
         sysadmin@firewall.loc
       }
       notification_email_from Alexandre.Cassen@firewall.loc
       smtp_server 192.168.200.1
       smtp_connect_timeout 30
       router_id LVS_02
    }
    
    vrrp_instance VI_1 {
        state BACKUP
        interface eth0
        virtual_router_id 51
        priority 100
        advert_int 1
        authentication {
            auth_type PASS
            auth_pass 1111
        }
        virtual_ipaddress {
            192.168.119.150/24
        }
    }

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启动keepalived

[root@lb01 keepalived]# /etc/init.d/keepalived start
    Starting keepalived:                                       [  OK  ]
    [root@lb02 keepalived]# /etc/init.d/keepalived start
    Starting keepalived:                                       [  OK  ]

在master(lb01)查看虚拟IP（192.168.119.150）

提示：使用ifconfig是查不到的；使用 ip add查询

[root@lb01 keepalived]# ip add | grep 192.168.119.150
        inet 192.168.119.150/24 scope global secondary eth0

在backup(lb02)查看(没有虚拟IP)

[root@lb02 keepalived]# ip add | grep 192.168.119.150

把master的keepalived服务down、虚拟IP就会自动切换到backup

[root@lb01 keepalived]# /etc/init.d/keepalived stop
    Stopping keepalived:                                       [  OK  ]
    [root@lb01 keepalived]# ip add | grep 192.168.119.150
    [root@lb01 keepalived]#

backup查询

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[root@lb02 keepalived]# ip add | grep 192.168.119.150
    [root@lb02 keepalived]# ip add | grep 192.168.119.150
    [root@lb02 keepalived]# ip add | grep 192.168.119.150
    [root@lb02 keepalived]# ip add | grep 192.168.119.150
    [root@lb02 keepalived]# ip add | grep 192.168.119.150
        inet 192.168.119.150/24 scope global secondary eth0
    [root@lb02 keepalived]# ip add | grep 192.168.119.150
        inet 192.168.119.150/24 scope global secondary eth0

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当master的keepalived服务启动时、虚拟IP会自动从backup切回到master

[copycode.gif]: /images/20220714/ba5b3edaad8a4dda87b48dd89efabe18.png