学习笔记（4）——实验室集群管理结点IP配置

经过验证，集群管理结点mgt的IP配置应为如下所示：

[root@mgt zmq]# ifconfig
//外部网卡
eth0      Link encap:Ethernet  HWaddr 5C:F3:FC:E9::
          inet addr:192.168.253.100  Bcast:192.168.253.255  Mask:255.255.255.0
          inet6 addr: :cc0:::5ef3:fcff:fee9:/ Scope:Global
          inet6 addr: fe80::5ef3:fcff:fee9:/ Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:  Metric:
          RX packets: errors: dropped: overruns: frame:
          TX packets: errors: dropped: overruns: carrier:
          collisions: txqueuelen:
          RX bytes: (429.4 MiB)  TX bytes: (49.4 GiB)
          Interrupt: Memory:-
//外部虚拟网卡，是LVS的Virtual IP（VIP）所绑定的网卡
eth0:    Link encap:Ethernet  HWaddr 5C:F3:FC:E9::
          inet addr:192.168.253.110  Bcast:192.168.253.110  Mask:255.255.255.255
          UP BROADCAST RUNNING MULTICAST  MTU:  Metric:
          Interrupt: Memory:-
//内部网卡，与集群各个计算节点之间通信
eth1      Link encap:Ethernet  HWaddr 5C:F3:FC:E9::7A
          inet addr:172.20.0.1  Bcast:172.20.0.255  Mask:255.255.255.0
          inet6 addr: :cc0:::5ef3:fcff:fee9:617a/ Scope:Global
          inet6 addr: fe80::5ef3:fcff:fee9:617a/ Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:  Metric:
          RX packets: errors: dropped: overruns: frame:
          TX packets: errors: dropped: overruns: carrier:
          collisions: txqueuelen:
          RX bytes: (8.3 MiB)  TX bytes: (219.3 MiB)
          Interrupt: Memory:-
//本地回环设备
lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::/ Scope:Host
          UP LOOPBACK RUNNING  MTU:  Metric:
          RX packets: errors: dropped: overruns: frame:
          TX packets: errors: dropped: overruns: carrier:
          collisions: txqueuelen:
          RX bytes: (852.3 MiB)  TX bytes: (852.3 MiB)

如果把eth0配置为内部网卡，eth1设置为外部网卡的话，将导致GDOS集群的MapScapeClient客户端访问变慢，且算法工具对话框无法选择数据。因此，LVS的VIP需要虚拟并绑定在面向外部网络的eth0上，如果虚拟并绑定在面向内部网络的eth1上的话，LVS也无法实现任务分发。在计算节点，LVS的VIP需要绑定到节点自身的回环设备上。一开始不知道这两块网卡哪个是哪个，走了点弯路，在这里记录一下。