RAC两台服务器的/etc/hosts都是如下

站在用户的角度思考问题，与客户深入沟通，找到大悟网站设计与大悟网站推广的解决方案，凭借多年的经验，让设计与互联网技术结合，创造个性化、用户体验好的作品，建站类型包括：成都做网站、网站建设、企业官网、英文网站、手机端网站、网站推广、空间域名、网络空间、企业邮箱。业务覆盖大悟地区。

127.0.0.1             localhost localhost.localdomain   localhost4      localhost4.localdomain4

::1                   localhost localhost.localdomain   localhost6      localhost6.localdomain6

192.168.130.200       hdba              hdba

192.168.130.201       hdbb hdbb       hdbb

192.168.130.136       hdb-cluster-scan  hdb-cluster-scan

192.168.130.137       hdba-vip          hdba-vip

192.168.130.138       hdbb-vip          hdbb-vip

192.168.148.200       hdba-priv         hdba-priv

192.168.148.201       hdbb-priv         hdbb-priv

192.168.130.208       hdg               hdg

A实例服务器的ip信息

[root@hdba ~]# ifconfig

eth0      Link encap:Ethernet  HWaddr 5C:B9:01:99:3A:84

          inet addr:192.168.148.200  Bcast:192.168.148.255  Mask:255.255.255.0

          inet6 addr: fe80::5eb9:1ff:fe99:3a84/64 Scope:Link

          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

          RX packets:2783160300 errors:0 dropped:0 overruns:0 frame:0

          TX packets:2925124606 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:1000

          RX bytes:2205601483366 (2.0 TiB)  TX bytes:2420649621403 (2.2 TiB)

eth0:1    Link encap:Ethernet  HWaddr 5C:B9:01:99:3A:84

          inet addr:169.254.221.245  Bcast:169.254.255.255  Mask:255.255.0.0

          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

eth2      Link encap:Ethernet  HWaddr 5C:B9:01:99:3A:85

          inet addr:192.168.130.200  Bcast:192.168.130.255  Mask:255.255.255.0

          inet6 addr: fe80::5eb9:1ff:fe99:3a85/64 Scope:Link

          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

          RX packets:7365390091 errors:0 dropped:0 overruns:0 frame:0

          TX packets:8297092138 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:1000

          RX bytes:2046603688342 (1.8 TiB)  TX bytes:6835745161060 (6.2 TiB)

eth2:2    Link encap:Ethernet  HWaddr 5C:B9:01:99:3A:85

          inet addr:192.168.130.137  Bcast:192.168.130.255  Mask:255.255.255.0

          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

B实例服务器的ip信息

[root@hdbb ~]# ifconfig

eth0      Link encap:Ethernet  HWaddr 5C:B9:01:99:38:24

          inet addr:192.168.148.201  Bcast:192.168.148.255  Mask:255.255.255.0

          inet6 addr: fe80::5eb9:1ff:fe99:3824/64 Scope:Link

          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

          RX packets:2925138277 errors:0 dropped:0 overruns:0 frame:0

          TX packets:2783173132 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:1000

          RX bytes:2420675528287 (2.2 TiB)  TX bytes:2205594234468 (2.0 TiB)

eth0:1    Link encap:Ethernet  HWaddr 5C:B9:01:99:38:24

          inet addr:169.254.205.69  Bcast:169.254.255.255  Mask:255.255.0.0

          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

eth2      Link encap:Ethernet  HWaddr 5C:B9:01:99:38:25

          inet addr:192.168.130.201  Bcast:192.168.130.255  Mask:255.255.255.0

          inet6 addr: fe80::5eb9:1ff:fe99:3825/64 Scope:Link

          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

          RX packets:6957519128 errors:0 dropped:0 overruns:0 frame:0

          TX packets:8365702494 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:1000

          RX bytes:2024616025362 (1.8 TiB)  TX bytes:7204587376017 (6.5 TiB)

eth2:1    Link encap:Ethernet  HWaddr 5C:B9:01:99:38:25

          inet addr:192.168.130.138  Bcast:192.168.130.255  Mask:255.255.255.0

          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

两台服务器的防火墙配置都一样，配置文件/etc/sysconfig/iptables内容如下

-A INPUT -p tcp -m state --state NEW -m tcp --dport 22 -j ACCEPT

#来自心跳网卡的数据都放行

-A INPUT -i eth0 -j ACCEPT

-A INPUT -i eth0:1 -j ACCEPT

#vip和scan ip放行

#本来A实例的vip去访问B实例，在B实例防火墙添加A实例的vip，为了使两台服务器的防火墙配置一样，就把A实例和B实例的vip都放行

-A INPUT  -i eth0  -s 192.168.130.200/32 -j ACCEPT

-A INPUT  -i eth0 -s 192.168.130.201/32 -j ACCEPT

-A INPUT  -i eth0 -s 192.168.130.137/32 -j ACCEPT

-A INPUT   -i eth0   -s 192.168.130.138/32 -j ACCEPT

-A INPUT  -i eth0   -s 192.168.130.136/32 -j ACCEPT

-A INPUT   -i eth0  -s 192.168.200.11/32 -j ACCEPT

#信任IP列表，/24表示整个网段都开放，/32表示只开放这个IP

-A INPUT   -s 10.10.23.0/24 -p tcp -m state --state NEW -m tcp --dport 1521 -j ACCEPT

-A INPUT -s 172.31.210.0/24 -p tcp -m state --state NEW -m tcp --dport 1521 -j ACCEPT

-A INPUT -s 192.168.74.0/24 -p tcp -m state --state NEW -m tcp --dport 1521 -j ACCEPT

-A INPUT -s 192.168.128.137/32 -p tcp -m state --state NEW -m tcp --dport 1521 -j ACCEPT

#对全部网段开放1521端口
-A INPUT -p tcp --dport 1521 -j ACCEPT

#下面两行要放到最后，如果 放在前面会创成加入的放行不生效！

-A INPUT -j REJECT --reject-with icmp-host-prohibited

-A FORWARD -j REJECT --reject-with icmp-host-prohibited

COMMIT

文章题目：防火墙在RAC上的配置
分享链接：http://kswjz.com/article/ppsges.html