模拟RAC两个节点内联网不通
环境：RHEL5.8 RAC 11.2.0.3.0
1：2节点集群是正常的
[grid@rac1 ~]$ crs_stat -t
Name Type Target State Host
------------------------------------------------------------
ora.CRSDATA.dg ora....up.type ONLINE ONLINE rac1
ora.DATA.dg ora....up.type ONLINE ONLINE rac1
ora....ER.lsnr ora....er.type ONLINE ONLINE rac1
ora....N1.lsnr ora....er.type ONLINE ONLINE rac2
ora.asm ora.asm.type ONLINE ONLINE rac1
ora.chris.db ora....se.type ONLINE ONLINE rac1
ora.cvu ora.cvu.type ONLINE ONLINE rac2
ora.gsd ora.gsd.type OFFLINE OFFLINE
ora....network ora....rk.type ONLINE ONLINE rac1
ora.oc4j ora.oc4j.type ONLINE ONLINE rac2
ora.ons ora.ons.type ONLINE ONLINE rac1
ora....SM1.asm application ONLINE ONLINE rac1
ora....C1.lsnr application ONLINE ONLINE rac1
ora.rac1.gsd application OFFLINE OFFLINE
ora.rac1.ons application ONLINE ONLINE rac1
ora.rac1.vip ora....t1.type ONLINE ONLINE rac1
ora....SM2.asm application ONLINE ONLINE rac2
ora....C2.lsnr application ONLINE ONLINE rac2
ora.rac2.gsd application OFFLINE OFFLINE
ora.rac2.ons application ONLINE ONLINE rac2
ora.rac2.vip ora....t1.type ONLINE ONLINE rac2
ora....ry.acfs ora....fs.type ONLINE ONLINE rac1
ora.scan1.vip ora....ip.type ONLINE ONLINE rac2
2：关闭节点2的内网网卡
[root@rac2 ~]# date
Tue Jul 16 11:29:41 CST 2013
[root@rac2 ~]# ifdown eth1
3：查看集群信息：
[grid@rac1 ~]$ crs_stat -t
Name Type Target State Host
------------------------------------------------------------
ora.CRSDATA.dg ora....up.type ONLINE ONLINE rac1
ora.DATA.dg ora....up.type ONLINE ONLINE rac1
ora....ER.lsnr ora....er.type ONLINE ONLINE rac1
ora....N1.lsnr ora....er.type ONLINE ONLINE rac1
ora.asm ora.asm.type ONLINE ONLINE rac1
ora.chris.db ora....se.type ONLINE ONLINE rac1
ora.cvu ora.cvu.type ONLINE ONLINE rac1
ora.gsd ora.gsd.type OFFLINE OFFLINE
ora....network ora....rk.type ONLINE ONLINE rac1
ora.oc4j ora.oc4j.type ONLINE OFFLINE
ora.ons ora.ons.type ONLINE ONLINE rac1
ora....SM1.asm application ONLINE ONLINE rac1
ora....C1.lsnr application ONLINE ONLINE rac1
ora.rac1.gsd application OFFLINE OFFLINE
ora.rac1.ons application ONLINE ONLINE rac1
ora.rac1.vip ora....t1.type ONLINE ONLINE rac1
ora.rac2.vip ora....t1.type ONLINE ONLINE rac1
ora....ry.acfs ora....fs.type ONLINE ONLINE rac1
ora.scan1.vip ora....ip.type ONLINE ONLINE rac1
发现节点2集群信息已经不存在了
4：检查节点2在11:29:41点后的os日志信息：
[root@rac2 ~]# tail -f /var/log/messages
Jul 16 11:30:02 rac2 avahi-daemon[3029]: Withdrawing address record for 192.168.1.151 on eth1.
Jul 16 11:30:02 rac2 avahi-daemon[3029]: Leaving mDNS multicast group on interface eth1.IPv4 with address 192.168.1.151.
Jul 16 11:30:02 rac2 avahi-daemon[3029]: Joining mDNS multicast group on interface eth1.IPv4 with address 169.254.241.123.
Jul 16 11:30:02 rac2 avahi-daemon[3029]: IP_ADD_MEMBERSHIP failed: No such device
Jul 16 11:30:02 rac2 avahi-daemon[3029]: Withdrawing address record for 169.254.241.123 on eth1.
Jul 16 11:30:02 rac2 avahi-daemon[3029]: Interface eth1.IPv4 no longer relevant for mDNS.
Jul 16 11:30:02 rac2 avahi-daemon[3029]: Withdrawing address record for fe80::a00:27ff:fe39:ce0a on eth1.
Jul 16 11:30:02 rac2 avahi-daemon[3029]: Leaving mDNS multicast group on interface eth1.IPv6 with address fe80::a00:27ff:fe39:ce0a.
Jul 16 11:30:02 rac2 avahi-daemon[3029]: iface.c: interface_mdns_mcast_join() called but no local address available.
Jul 16 11:30:02 rac2 avahi-daemon[3029]: Interface eth1.IPv6 no longer relevant for mDNS.
Jul 16 11:30:34 rac2 avahi-daemon[3029]: Withdrawing address record for 10.13.12.152 on eth0.
Jul 16 11:30:34 rac2 avahi-daemon[3029]: Withdrawing address record for 10.13.12.156 on eth0.
此时Withdrawing address record for 192.168.1.151 on eth1.已经很明确的告诉了我们，eth1上的IP地址已经被撤回。
一系列报错，实例和asm也关闭了：
alterrac2.log：
2013-07-16 11:30:17.452
[cssd(3335)]CRS-1612:Network communi
