Keepalived Single instance and multi-instance

Host information:

Nginx Agent: 192.168.1.201

Nginx Agent: 192.168.1.204

nginx_web_1:192.168.1.202

nginx_web_2:192.168.1.203

vip1:192.168.1.205

vip1:192.168.1.206

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1. Installation

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Cd/usr/local/src/wget Http://www.keepalived.org/software/keepalived-1.2.20.tar.gztar XF KEEPALIVED-1.2.20.TAR.GZCD keepalived-1.2.20./configure--prefix=/usr/local/keepalivedmake && make install Cp/usr/local/keepalived/etc/rc.d/init.d/keepalived/etc/init.d/keepalivedchmod +x/etc/init.d/keepalived

#启动脚本

-----------------------------------------------Configuration

Sed-i "15d;14a. /usr/local/keepalived/etc/sysconfig/keepalived "/etc/init.d/ Keepalived Add the following at the same time (import the path of the keepavlied main program into the environment variable path): Sed-i ' 15a path= "$PATH:/usr/local/keepalived/sbin" '/etc/ Init.d/keepalivedsed-i ' 16a export PATH '/etc/init.d/keepalived #修改/etc/init.d/keepalived, looking for about 15 rows or so. /etc/sysconfig/keepalivedsed-i ' 14d;13a keepalived_options= "-d-f/etc/keepalived/keepalived.conf" '/usr/local/ keepalived/etc/sysconfig/keepalived# Modify the/usr/local/keepalived/etc/sysconfig/keepalived file to set the correct service startup parameters

2. Single-instance configuration

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----------------------------------------------master Configuration

mkdir  /etc/keepalivedcp /usr/local/keepalived/etc/keepalived/keepalived.conf /etc/ keepalived/keepalived.confvim /etc/keepalived/keepalived.conf      #主配置文件!  Configuration file for keepalivedglobal_defs {    notification_email   {    [email protected]   }   notification_ Email_from [email protected]   smtp_server 127.0.0.1   smtp_ connect_timeout 30   router_id 1                #不同keepalived. conf This ID needs to be unique    }vrrp_instance VI_1   {        #示例名字为VI-1, the same instance of the standby node name to be the same as this    state  master              #状态为MASTER, standby node is backup    interface eth0            #通信接口为eth0    virtual_router_id  1     #实例ID, the master and slave need to be configured consistently    priority 150               #优先级为150, the standby node priority must be lower than this number    advert_int 1               #通告检查间隔时间1秒     authentication {      auth_type pass          #PASS认证类型, this parameter has the same node settings as the master node       auth_pass 1234          #密码是1234, this parameter has the same node settings as the master node    }   virtual_ Ipadderss {      192.168.1.205/24 dev eth0 label eth0:1    }}

-----------------------------------------Provisioning Profile

vim /etc/keepalived/keepalived.conf      #备配置文件! configuration file  for keepalivedglobal_defs {   notification_email {   [email  protected]   }   notification_email_from [email protected]    smtp_server 127.0.0.1   smtp_connect_timeout 30   router_ id 1}vrrp_instance vi_1 {    state backup     interface eth0    virtual_router_id 1    priority 100     advert_int 1    authentication {         auth_type pass        auth_pass 1111     }    virtual_ipaddress {         192.168.1.205/24 dev eth0 label eth0:1    }} 

-----------------------------------m/s switching test

[[email protected] keepalived-1.2.20]#/etc/init.d/keepalived stop

Stop keepalived: [OK]

[[Email protected] keepalived-1.2.20]# IP add

1:lo: <LOOPBACK,UP,LOWER_UP> MTU 16436 qdisc noqueue State UNKNOWN

Link/loopback 00:00:00:00:00:00 BRD 00:00:00:00:00:00

inet 127.0.0.1/8 Scope host Lo

INET6:: 1/128 Scope Host

Valid_lft Forever Preferred_lft Forever

2:eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> MTU Qdisc pfifo_fast State up Qlen 1000

Link/ether 00:0C:29:4A:30:DD BRD FF:FF:FF:FF:FF:FF

inet 192.168.1.204/24 BRD 192.168.1.255 Scope Global eth0

inet 192.168.1.205/24 Scope Global Secondary eth0:1

Inet6 FE80::20C:29FF:FE4A:30DD/64 Scope link

Valid_lft Forever Preferred_lft Forever

Log:

Feb 11:35:41 lab-4-c6 keepalived_vrrp[2597]: vrrp_instance (vi_1) Entering BACKUP State

Feb 11:35:41 lab-4-c6 keepalived_vrrp[2597]: VRRP sockpool: [IfIndex (2), Proto (), unicast (0), FD (10,11)]

Feb 11:35:55 lab-4-c6 keepalived_vrrp[2597]: vrrp_instance (vi_1) Transition to MASTER State

Feb 11:35:56 lab-4-c6 keepalived_vrrp[2597]: vrrp_instance (vi_1) Entering MASTER State

Feb 11:35:56 lab-4-c6 keepalived_vrrp[2597]: vrrp_instance (vi_1) setting protocol VIPs.

Feb 11:35:56 lab-4-c6 keepalived_vrrp[2597]: vrrp_instance (vi_1) sending gratuitous ARPs on eth0 for 192.168.1.205

Feb 11:35:56 lab-4-c6 keepalived_healthcheckers[2596]: NetLink Reflector reports IP 192.168.1.205 added

3. Multi-instance Configuration

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#主配置

--------------------

#前面类似部分略vrrp_instance  VI_1 {    state MASTER     interface eth0    virtual_router_id 1    priority 150     advert_int 1    authentication {         auth_type pass        auth_pass 1111     }    virtual_ipaddress {         192.168.1.205/24 dev eth0 label eth0:1    }vrrp_instance  VI_2 {    state BACKUP    interface eth0     virtual_router_id 1    priority 100     advert_int 1    authentication {         Auth_type pass        auth_pass 1111    }     Virtual_ipaddress {        192.168.1.206/24 dev eth0  label eth0:2    }

#备配置

---------------------------------

vrrp_instance vi_1 {    state backup    interface  eth0    virtual_router_id 1    priority 100     advert_int 1    authentication {         auth_type PASS        auth_pass 1111     }    virtual_ipaddress {         192.168.1.205/24 dev eth0 label eth0:1    }vrrp_instance vi_2  {    state MASTER    interface eth0     virtual_router_id 1    priority 150    advert_int  1    authentication {        auth_type  pass         auth_pass 1111    }    virtual_ Ipaddress {        192.168.1.206/24 dev eth0 label  eth0:2    }

This article is from the "Fuqin Wine" blog, please make sure to keep this source http://szk5043.blog.51cto.com/8456440/1766216

Keepalived Single instance and multi-instance