首先檢查安裝openssl-devel
yum install openssl-devel
如果是離線，借鑑文章：
# ./configure --prefix=/usr/local/keepalived --with-kernel-dir=/usr/src/kernels/2.6.32-279.el6.x86_64
當出現如下字樣
keepalived configuration------------------------
keepalived version : 1.2.19
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
執行安裝命令
# make
# make install
設定keepalived開機啟動指令碼
cp /usr/local/keepalived/etc/rc.d/init.d/keepalived /etc/rc.d/init.d/
cp /usr/local/keepalived/etc/sysconfig/keepalived /etc/sysconfig/
cp /usr/local/keepalived/sbin/keepalived /usr/sbin/
chkconfig keepalived on
新建乙個配置檔案，預設keepalived啟動會去/etc/keepalived目錄下尋找配置檔案
# mkdir /etc/keepalived
# vi /etc/keepalived/keepalived.conf
global_defs
notification_email_from root@localhost
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id lvs_devel }
vrrp_instance vi_1
virtual_ipaddress }
virtual_server 192.168.30.20 80 }
real_server 192.168.30.13 80 }
} 配置完成後啟動keepalived，
如果是要配置mysql ha，那麼需要在啟動mysql相關服務前，要啟動keepalived，否則將會無法連線到伺服器
如果需要配置讀寫優先順序分離，可以配置權重即可，參考文章：
keepalived+lvs超時設定產生的realserver的tcp連線不釋放問題：
怎麼樣讓 lvs 和 realserver 工作在同一臺機器上
keepalived的健康檢查方式
lvs & keepalived的tcp 長連線的有關問題解決方法
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