centos-mini环境下安装配置keepalived v2.0.6

1.自行到http://www.keepalived.org/下载对应的keepalived版本
2.安装必要的库 libnfnetlink-devel zlib zlib-devel gcc gcc-c++ openssl openssl-devel openssh

yum install -y libnfnetlink-devel   zlib   zlib-devel   gcc   gcc-c++  openssl   openssl-devel   openssh   #cengos自带的有yum，其他linux版本如suse请用zypper安装

3.上传keepalived-2.0.6.tar.gz到/home下，解压缩到/usr/local/下

tar  -xvf  /home/keepalived-2.0.6.tar.gz  -C  /usr/local/keepalived

4.cd到/usr/local/keepalived/下。执行./configure

cd  /usr/local/keepalived/
./configure  #如果依赖库安装的没问题的话，这一步不会有报错，下面是结果

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
Use BFD Framework        : No
SNMP vrrp support        : No
SNMP checker support     : No
SNMP RFCv2 support       : No
SNMP RFCv3 support       : No
DBUS support             : No
SHA1 support             : No
Use Json output          : No
libnl version            : None
Use IPv4 devconf         : No
Use libiptc              : No
Use libipset             : No
init type                : systemd
Build genhash            : Yes
Build documentation      : No

*** WARNING - this build will not support IPVS with IPv6. Please install libnl/libnl-3 dev libraries to support IPv6 with IPVS.
#看到这个就算是依赖包安装的没问题

5.开始编译和安装

make  &&  make  install    
#########以下是安装成功截图
make[1]: 进入目录“/usr/local/keepalived”
make[2]: 进入目录“/usr/local/keepalived”
make[2]: 对“install-exec-am”无需做任何事。
 /usr/bin/mkdir -p '/usr/local/share/doc/keepalived'
 /usr/bin/install -c -m 644 README '/usr/local/share/doc/keepalived'
make[2]: 离开目录“/usr/local/keepalived”
make[1]: 离开目录“/usr/local/keepalived”

6.将keepalved加进系统服务并且在/etc/sysconfig/写入配置文件以及将keepalived命令加进/usr/bin 和 /usr/sbin

cd  /usr/local/keepalived/keepalived/etc/init.d/
cp keepalived  /etc/init.d/keepalived   #最好查看下keeplaived是否有执行权限
mkdir  /etc/keepalived/
cd  /usr/local/keepalived/keepalived/etc/keepalived/
cp  keepalived.conf  /etc/keepalived/
cd /usr/local/keepalived/keepalived/etc/sysconfig/
cp keepalived  /etc/sysconfig/keepalived
cp  /usr/local/keepalived/sbin/keepalived  /usr/bin   #方便以后查看keepalived的版本，用keepalived  -v可以查看
cp  /usr/local/keepalived/sbin/keepalived  /usr/sbin
vi  /etc/keepalived/keepalived.conf   #以下是配置的内容，不可直接复制
! Configuration File for keepalived

global_defs {
   router_id LVS_DEVEL
   vrrp_skip_check_adv_addr
   #vrrp_strict      #这个最好注释掉，否则可能造成物理机的浏览器无法访问应用
   vrrp_garp_interval 0
   vrrp_gna_interval 0
}

vrrp_instance VI_1 {
    state MASTER
    interface ens33  #这个改成自己的网卡名字，因人而异不同，用ip a这个命令可以查看
    virtual_router_id 51   #这个主备两台机器要写成一样的，我的是主服务器是51，所以副服务器也是51
    priority 100  #这个数值要比备机服务器的keepalived的大就行，不过最好也要在100左右
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.66.130    #这个是虚拟ip，虚拟ip的作用就是暴露在外面可供外界访问，比如你访问的百度的ip可能并不是真的后台服务器的ip，只是做了一个映射这样的东西（这是我个人理解的，大神勿喷），所以访问这个虚拟ip相当于访问真实服务器的ip。
    }

}

7.启动keepalived，并查看是否启动配置成功。

service  keepalived  start
ip  a  #查看网卡可以看出是否启动成功，下面是启动成功的网卡显示
ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 00:0c:29:19:cc:b4 brd ff:ff:ff:ff:ff:ff
    inet 192.168.66.132/24 brd 192.168.66.255 scope global noprefixroute dynamic ens33
       valid_lft 1543sec preferred_lft 1543sec
    inet 192.168.66.130/32 scope global ens33
       valid_lft forever preferred_lft forever
    inet6 fe80::2d6c:8ffb:2943:38aa/64 scope link noprefixroute 
       valid_lft forever preferred_lft forever

8.将keepalived加进开机启动

systemctl  enable  keepalived.service