keepalived简单快速配置
1、官方下载wget http://www.keepalived.org/software/keepalived-XXXX.tar.gz 2、解压，编译安装
tar zxvf keepalived-XXXX.tar.gz
./configure --prefix=/usr/local/keepalived --with-kernel-dir=/usr/src/kernels/2.6.XXXXXXXX/
make && make install
cp /usr/local/keepalived/etc/rc.d/init.d/keepalived /etc/rc.d/init.d/
cp /usr/local/keepalived/etc/sysconfig/keepalived /etc/sysconfig/
mkdir /etc/keepalived
cp /usr/local/keepalived/etc/keepalived/keepalived.conf /etc/keepalived/
cp /usr/local/keepalived/sbin/keepalived /usr/sbin/
service keepalived start 在使用./configure 时，出现了以下错误：
checking openssl/ssl.h usability... no
checking openssl/ssl.h presence... no
checking for openssl/ssl.h... no
configure: error:
!!! OpenSSL is not properly installed on your system. !!!
!!! Can not include OpenSSL headers files. !!! 解决方法：安装openssl和openssl-devel包，然后从新编译配置文件
# yum install openssl openssl-devel
# ./configure --prefix=/usr/local/keepalived --with-kernel-dir=/usr/src/kernels/2.6.XXXXXXXX/
Keepalived configuration
------------------------
Keepalived version : 1.3.2
Compiler : gcc
Preprocessor flags :
Compiler flags : -Wall -Wunused -Wstrict-prototypes -Wextra -g -O2
Linker flags :
Extra Lib : -ldl -lssl -lcrypto
Use IPVS Framework : Yes
IPVS use libnl : No
IPVS syncd attributes : No
IPVS 64 bit stats : No
fwmark socket support : Yes
Use VRRP Framework : Yes
Use VRRP VMAC : Yes
Use VRRP authentication: Yes
With ip rules/routes : Yes
SNMP vrrp support : No
SNMP checker support : No
SNMP RFCv2 support : No
SNMP RFCv3 support : No
DBUS support : No
SHA1 support : No
Use Debug flags : No
Stacktrace support : No
Memory alloc check : No
libnl version : None
Use IPv4 devconf : No
Use libiptc : No
Use libipset : No
init type : systemd
Build genhash : Yes
Build documentation : No 3、配置
Master与Backup 的配置文件
Master：
! Configuration File for keepalived
global_defs {
notification_email {
15251076067@163.com
}
notification_email_from king_819@163.com
smtp_server smtp.163.com
smtp_connect_timeout 30
router_id LVS_DEVEL
}
# VIP1
vrrp_instance VI_1 {
state MASTER
interface eth0
virtual_router_id 51
mcast_src_ip 192.168.18.211
priority 100
advert_int 5
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.18.200
}
} BackUP：
! Configuration File for keepalived
global_defs {
notification_email {
15251076067@163.com
}
notification_email_from king_819@163.com
smtp_server smtp.163.com
smtp_connect_timeout 30
router_id LVS_DEVEL
}
# VIP1
vrrp_instance VI_1 {
state BACKUP
interface eth0
virtual_router_id 51
mcast_src_ip 192.168.18.212
priority 90
advert_int 5
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.18.200
}
}
以下是在CentOS 7上使用yum安装配置：
1、安装
yum install keepalived -y 2、MASTER和BACKUP配置，备注的地方是必须要修改的
MASTER
# vim /etc/keepalived/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_DEVEL
}
vrrp_instance VI_1 {
state MASTER # 配置为主
interface eno16777736 # 设置网卡
virtual_router_id 51 # 虚拟路由ID，全局唯一
priority 100 # 优先级，权重值
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
10.10.10.50 # IP地址
}
} BACKUP
! Configuration File for keepalived
global_defs {
notification_email {
871703234@qq.com
}
notification_email_from 871703234@qq.com
smtp_server smtp.qq.com
smtp_connect_timeout 30
router_id LVS_DEVEL
}
vrrp_instance VI_1 {
state BACKUP
interface eno16777736
virtual_router_id 51
priority 90
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
10.10.10.50
}
} 3、验证
两台重启服务
# systemctl restart keepalived.service 使用ip add sh命令查看，在主的上面
# ip add sh
1: lo:mtu 65536 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
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eno16777736:mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:0c:29:a3:4b:3e brd ff:ff:ff:ff:ff:ff
inet 10.10.10.10/24 brd 10.10.10.255 scope global eno16777736
valid_lft forever preferred_lft forever
inet 10.10.10.50/32 scope global eno16777736
valid_lft forever preferred_lft forever
inet6 fe80::20c:29ff:fea3:4b3e/64 scope link
valid_lft forever preferred_lft forever 使用systemctl stop keepalived.service,VIP会自动切换到备用的上面去。
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