lvs fullnat部署手册（二）keepalived配置篇
一开始粗心大意没有注意到“LVS操作手册”。fullnat模式下在配置keepalived的时候，与dr、nat、tun是有很大的区别的。这里根据自身实战的经验和lvs操作手册中的步骤，重新用自己的语言整理下：
注意不要安装libnl libnl-devel，否则有报错，如果没遇到报错也无所谓
在完成fullnat内核编译之后，我们就可以配置keepalived了：
一、安装keepalived、ipvsadm
必须要用tools压缩包中的来安装，不要用其他开源版本
1.1 keepalived
cd tools/keepalived;
./configure --with-kernel-dir="/lib/modules/`uname -r`/build";
make;
make install;
cp -a bin/genhash /usr/local/bin/
cp -a bin/keepalived /usr/local/sbin/
cp -a keepalived/etc/init.d/keepalived.init /etc/init.d/keepalived
cp -a keepalived/etc/keepalived/keepalived.conf /etc/keepalived/keepalived.conf
cp -a keepalived/etc/init.d/keepalived.sysconfig /etc/sysconfig/keepalived
1.2 ipvsadm
cd tools/ipvsadm;
make;
make install;
二、系统自身参数配置
1、
打开irqbalance
# service irqbalance start
# chkconfig --level 2345 irqbalance on
2、
路径：/etc/sysctl.conf
# configure for lvs
net.ipv4.conf.all.arp_ignore = 1
net.ipv4.conf.all.arp_announce = 2
net.core.netdev_max_backlog = 500000
三、keepalived配置文件
1、global部分
global_defs {
notification_email {
shanks@
}
notification_email_from Alexandre.Cassen@firewall.loc
smtp_server 192.168.200.1
smtp_connect_timeout 30
router_id LVS_DEVEL
}
2、local address部分
#这部分官方推荐用多个ip地址，本次试验就用服务器自身地址，如果需要用到多个地址，需要在rc.local中添加绑ip的命令。
local_address_group laddr_g1 {
192.168.122.123
}
3、virtual server group部分
#看到这里需要将vip和vport都声明，这就是一个区别。
virtual_server_group shanks1 {
10.255.255.123 80
}
4、virtual server部分
virtual_server 10.255.255.123 80 {
delay_loop 6
lb_algo rr
lb_kind FNAT
protocol TCP
syn_proxy
laddr_group_name laddr_g1 #local address group
alpha
omega
quorum 1
hysteresis 0
quorum_up " ip addr add 10.255.255.123/32 dev lo;" #add
#quorum_up " ip addr add 10.255.255.123/32 dev lo; ip addr add 10.255.255.124/32 dev lo;"
quorum_down "ip addr del 10.255.255.123/32 dev lo;" #del vip
real_server 192.168.1.123 80 {
weight 1
TCP_CHECK {
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
connect_port 80
}
}
}
最后启动keepalived。关于zebra、ospf后续补充
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