LVS + Keepalived 配置详解
LVS+Keepalived 配置我们通过LVS-DR-MASTER,LVS-DR-BACKUP作为LVS负载均衡调度器，并且两者之间通过keepalived来两者之间的HA。keepalived本身就是为了LVS为开发的，所以说我们通过keepalived来进行LVS的配置就显得十分的方便。而且keepalived是直接操作ip_vs不用通过ipvsadm，所以更加方便。 实验拓扑图LVS节点1配置：# yum install popt-devel openssl openssl-devel libnl-devel ipvsadm# tar zxvf keepalived-1.2.7.tar.gz # mkdir /usr/local/keepalived# cd keepalived-1.2.7# ./configure --prefix=/usr/local/keepalived/ --with-kernel-dir=/usr/src/kernels/2.6.32-431.el6.x86_64/# make && make install# mkdir /etc/keepalived# cp /usr/local/keepalived/sbin/keepalived /usr/sbin/# cp /usr/local/keepalived/etc/sysconfig/keepalived /etc/sysconfig/# cp /usr/local/keepalived/etc/rc.d/init.d/keepalived /etc/init.d/ # vim /etc/sysctl.confnet.ipv4.ip_forward = 1 #虽然DR模式不需要开启此功能，但Keepalived 需要开启。 # vim /etc/keepalived/keepalived.conf! Configuration File for keepalivedglobal_defs { notification_email { tengqing@centaline.com.cn } notification_email_from tengqing@centaline.com.cn smtp_server mail.centaline.com.cn#设置SMTP Server地址； smtp_connect_timeout 30 router_id LVS_Node1 #备用节点名字不能相同：LVS_Node2} vrrp_instance VI_1 { state MASTER #备用节点可以改为:state BACKUP interface eth0 virtual_router_id 51 priority 100 #同组优先级不能相同 advert_int 1 authentication { auth_type PASS auth_pass 1111 } virtual_ipaddress { 10.6.2.195 }} virtual_server 10.6.2.195 80 { delay_loop 6 lb_algo wrr lb_kind DR nat_mask 255.255.255.0 persistence_timeout 50 protocol TCP real_server 10.6.2.192 80 { weight 1 TCP_CHECK { connect_timeout 3 nb_get_retry 3 delay_before_retry 3 } } real_server 10.6.2.191 80 { weight 1 TCP_CHECK { connect_timeout 3 nb_get_retry 3 delay_before_retry 3 } }} 然后把 keepalived.conf 配置文件复制到备用节点上即可。
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