RAC 修改IP 这个操作本身也只有几步操作，但是它涉及到OCR。所以要格外小心。一般来说，如果不是必须要修改的话，尽量不要去修改OCR 的东西。稳定第一。
在做之前，要手动的OCR 进行一个备份，这样即使修改失败，也能还原回来。 OCR的备份，参考Blog：
Oracle 10g RAC OCR 和 VotingDisk 的备份与恢复
http://blog.csdn.net/tianlesoftware/archive/2010/04/09/5467273.aspx
另外，Public/Private对应的的主机名不能更改，如果确实需要更改主机名，需要重新安装CRS。
实验对IP 地址做如下修改：
Public IP 10.85.10.119/121-- >10.85.10.219/221
Privite IP 192.168.1.119/121-- >192.168.1.219/221
Virtual IP 10.85.10.122/123-- >10.85.10.222/223
实验平台： redhat 4.7 + ORACLE 10G + raw +ASM
一． 停止oracle相关的所有进程, 包括数据库, asm, node application, crs本身.
1.1 查看当前系统上crs运行的状态
[root@raw1 bin]# pwd
/u01/app/oracle/product/crs/bin
[root@raw1 bin]# ./crs_stat -t
NameTypeTargetStateHost
------------------------------------------------------------
ora.raw.dbapplicationOFFLINEOFFLINE
ora.raw.dmm.cs applicationOFFLINEOFFLINE
ora....aw2.srv applicationOFFLINEOFFLINE
ora....w1.inst applicationOFFLINEOFFLINE
ora....w2.inst applicationOFFLINEOFFLINE
ora....SM1.asm applicationOFFLINEOFFLINE
ora....W1.lsnr applicationOFFLINEOFFLINE
ora.raw1.gsdapplicationOFFLINEOFFLINE
ora.raw1.onsapplicationOFFLINEOFFLINE
ora.raw1.vipapplicationOFFLINEOFFLINE
ora....SM2.asm applicationOFFLINEOFFLINE
ora....W2.lsnr applicationOFFLINEOFFLINE
ora.raw2.gsdapplicationOFFLINEOFFLINE
ora.raw2.onsapplicationOFFLINEOFFLINE
ora.raw2.vipapplicationOFFLINEOFFLINE
1.2 关闭数据库
[root@raw1 bin]# ./srvctl stop database -d raw
1.3 关闭asm实例
[root@raw1 bin]# ./srvctl stop asm -n raw1
[root@raw1 bin]# ./srvctl stop asm -n raw2
1.4 关闭其他应用程序
[root@raw1 bin]# ./srvctl stop nodeapps -n raw1
[root@raw1 bin]# ./srvctl stop nodeapps -n raw2
1.5 关闭crs后台进程, 在操作系统一级中止运行的crs后台进程, 必须在所有节点上运行.
[root@raw1 bin]# /etc/init.d/init.crs stop
Shutting down Oracle Cluster Ready Services (CRS):
Stopping resources.
Successfully stopped CRS resources
Stopping CSSD.
Shutting down CSS daemon.
Shutdown request successfully issued.
Shutdown has begun. The daemons should exit soon.
[root@raw2 ~]# /etc/init.d/init.crs stop
Shutting down Oracle Cluster Ready Services (CRS):
Stopping resources.
Successfully stopped CRS resources
Stopping CSSD.
Shutting down CSS daemon.
Shutdown request successfully issued.
Shutdown has begun. The daemons should exit soon.
二 修改操作系统的ip设置
2.1 修改 /etc/hosts 文件。 保持2个节点的一致
[root@raw1 bin]# vi /etc/hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 localhost
10.85.10.219 raw1
10.85.10.221 raw2
192.168.1.219 raw1-priv
192.168.1.221 raw2-priv
10.85.10.222 raw1-vip
10.85.10.223 raw2-vip
2.2 在两个节点上分别修改eth0和eth1地址：
[root@raw1 etc]# more /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
BOOTPROTO=static
IPADDR=10.85.10.219
NETMASK=255.255.255.0
ONBOOT=yes
GATEWAY=10.85.10.253
[root@raw2 ~]# more /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
BOOTPROTO=static
IPADDR=10.85.10.221
NETMASK=255.255.255.0
ONBOOT=yes
GATEWAY=10.85.10.253
[root@raw1 etc]# more /etc/sysconfig/network-scripts/ifcfg-eth1
DEVICE=eth1
BOOTPROTO=static
IPADDR=192.168.1.219
NETMASK=255.255.255.0
ONBOOT=yes
GATEWAY=192.168.1.1
[root@raw2 ~]# more /etc/sysconfig/network-scripts/ifcfg-eth1
DEVICE=eth1
BOOTPROTO=static
IPADDR=192.168.1.221
NETMASK=255.255.255.0
ONBOOT=yes
GATEWAY=192.168.1.1
2.3 在两个节点上分别重启网络服务，是修改的IP生效。
[root@raw1 ~]# service network restart
[root@raw2 ~]# service network restart
三． 启动crs, 设置oracle中ip地址相关的设置.
3.1 在两个节点启动crs, 并关闭随crs启动的应用程序
[root@raw1 ~]# /etc/init.d/init.crs start
Startup will be queued to init within 90 seconds.
[root@raw2 ~]#/etc/init.d/init.crs start
Startup will be queued to init within 90 seconds.
由于oracle所有应用设置为自动启动, 所以在crs启动时会试图启动所有的服务, 但是在对oracle相关的ip地址进行设置时需要crs处于运行状态. 但是数据库, asm和node application处于停止状态, 在一个节点执行以下命令：
[root@raw1 bin]# ./srvctl stop database -d raw
[root@raw1 bin]# ./srvctl stop asm -n raw1
[root@raw1 bin]# ./srvctl stop asm -n raw2
[root@raw1 bin]# ./srvctl stop nodeapps -n raw1
[root@raw1 bin]# ./srvctl stop nodeapps -n raw2
[root@raw1 bin]# ./crs_stat -t
NameTypeTargetStateHost
------------------------------------------------------------
ora.raw.dbapplicationOFFLINEOFFLINE
ora.raw.dmm.cs applicationOFFLINEOFFLINE
ora....aw2.srv applicationOFFLINEOFFLINE
ora....w1.inst applicationOFFLINEOFFLINE
ora....w2.inst applicationOFFLINEOFFLINE
ora....SM1.asm applicationOFFLINEOFFLINE
ora....W1.lsnr applicationOFFLINEOFFLINE
ora.raw1.gsdapplicationOFFLINEOFFLINE
ora.raw1.onsapplicationOFFLINEOFFLINE
ora.raw1.vipapplicationOFFLINEOFFLINE
ora....SM2.asm applicationOFFLINEOFFLINE
ora....W2.lsnr applicationOFFLINEOFFLINE
ora.raw2.gsdapplicationOFFLINEOFFLINE
ora.raw2.onsapplicationOFFLINEOFFLINE
ora.raw2.vipapplicationOFFLINEOFFLINE
3.2 使用oifcfg修改网卡设置, oifconfig可以用来设置和查看网卡使用的方式.
注： 如果修改的网段相同，可以不做这一步。
-- 查看当前配置：
[root@raw1 bin]# ./oifcfg getif -global
eth010.85.10.0globalpublic
eth1192.168.1.0globalcluster_interconnect
-- 删除当前配置
[root@raw1 bin]# ./oifcfg delif -global eth0
[root@raw1 bin]# ./oifcfg delif -global eth1
[root@raw1 bin]# ./oifcfg getif
-- 重新添加
[root@raw1 bin]# ./oifcfg setif -global eth0/10.85.10.0:public
[root@raw1 bin]# ./oifcfg setif -global eth1/192.168.1.0:cluster_interconnect
[root@raw1 bin]#./oifcfg getif
eth010.85.10.0globalpublic
eth1192.168.1.0globalcluster_interconnect
[root@racnode2 bin]# ./oifcfg iflist
eth0192.168.86.0
eth1192.168.0.0
eth2192.168.200.0
eth3192.168.200.0
eth4192.168.200.0
eth5192.168.200.0
注意：这里IP 地址最一个为0. 代表的是一个网段。修改的时候要切记。否在在启动OCR 时会报如下错误：
[ CRSOCR][4054413904] OCR context init failure. Error: PROC-44: 网络地址和网络接口操作中出错网络地址和网络接口操作错误 [7]
3.3 修改VIP
[root@raw1 bin]# ./srvctl modify nodeapps -n raw1 -A 10.85.10.222/255.255.255.0/eth0
[root@raw1 bin]# ./srvctl modify nodeapps -n raw2 -A 10.85.10.223/255.255.255.0/eth0
3.4 设置listener.ora和tnsnames.ora, 检查这些文件中是否有指定原来ip的地方, 修改为更改后的ip地址。
[root@raw1 bin]# vi/u01/app/oracle/product/10.2.0/db_1/network/admin/listener.ora
# listener.ora.raw1 Network Configuration File:
/u01/app/oracle/product/10.2.0/db_1/network/admin/listener.ora.raw1
# Generated by Oracle configuration tools.
LISTENER_RAW1 =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = raw1-vip)(PORT = 1521)(IP = FIRST))
(ADDRESS = (PROTOCOL = TCP)(HOST = 10.85.10.219)(PORT = 1521)(IP = FIRST))
)
)
注意：如果你使用了ocfs，修改ocfs配置文件(/etc/ocfs/cluster.conf),验证修改后是否可用。
3.5 启动node applications, asm, 数据库
[root@raw1 bin]# ./srvctl start nodeapps -n raw1
[root@raw1 bin]# ./srvctl start nodeapps -n raw2
[root@raw1 bin]# ./srvctl start asm -n raw1
[root@raw1 bin]# ./srvctl start asm -n raw2
[root@raw1 bin]# ./srvctl start instance -d raw -i raw1
[root@raw1 bin]# ./srvctl start instance -d raw -i raw2
[root@raw1 bin]# ./crs_stat -t
NameTypeTargetStateHost
------------------------------------------------------------
ora.raw.dbapplicationONLINEONLINEraw2
ora.raw.dmm.cs applicationONLINEONLINEraw2
ora....aw2.srv applicationONLINEONLINEraw2
ora....w1.inst applicationONLINEONLINEraw1
ora....w2.inst applicationONLINEONLINEraw2
ora....SM1.asm applicationONLINEONLINEraw1
ora....W1.lsnr applicationONLINEONLINEraw1
ora.raw1.gsdapplicationONLINEONLINEraw1
ora.raw1.onsapplicationONLINEONLINEraw1
ora.raw1.vipapplicationONLINEONLINEraw1
ora....SM2.asm applicationONLINEONLINEraw2
ora....W2.lsnr applicationONLINEONLINEraw2
ora.raw2.gsdapplicationONLINEONLINEraw2
ora.raw2.onsapplicationONLINEONLINEraw2
ora.raw2.vipapplicationONLINEONLINEraw2
若启动出现问题，参考我的blog：
Oracle RAC 启动与关闭
http://blog.csdn.net/tianlesoftware/archive/2010/03/05/5349003.aspx
3.6 确认IP, 修改完成。
[root@raw1 bin]# ifconfig
eth0Link encap:EthernetHWaddr 00:0C:29:55:28:FD
inet addr:10.85.10.219Bcast:10.85.10.255Mask:255.255.255.0
... ...
eth0:1Link encap:EthernetHWaddr 00:0C:29:55:28:FD
inet addr:10.85.10.222Bcast:10.85.10.255Mask:255.255.255.0
... ...
eth1Link encap:EthernetHWaddr 00:0C:29:55:28:07
inet addr:192.168.1.219Bcast:192.168.1.255Mask:255.255.255.0
... ...
loLink encap:Local Loopback
inet addr:127.0.0.1Mask:255.0.0.0
[root@raw2 ~]# ifconfig
eth0Link encap:EthernetHWaddr 00:0C:29:2E:28:EE
inet addr:10.85.10.221Bcast:10.85.10.255Mask:255.255.255.0
... ...
eth0:1Link encap:EthernetHWaddr 00:0C:29:2E:28:EE
inet addr:10.85.10.223Bcast:10.85.10.255Mask:255.255.255.0
... ...
eth1Link encap:EthernetHWaddr 00:0C:29:2E:28:F8
inet addr:192.168.1.221Bcast:192.168.1.255Mask:255.255.255.0
... ...
loLink encap:Local Loopback
inet addr:127.0.0.1Mask:255.0.0.0
... ...
