RAC 修改IP 這個操作本身也只有幾步操作，但是它涉及到OCR。所以要格外小心。一般來說，如果不是必須要修改的話，儘量不要去修改OCR 的東西。穩定第一。

在做之前，要手動的OCR 進行一個備份，這樣即使修改失敗，也能還原回來。 OCR的備份，參考Blog：

10g RAC OCR 和 VotingDisk 的備份與恢復

http://blog.csdn.net/tianlesoftware/archive/2010/04/09/5467273.aspx

另外，Public/Private對應的的主機名不能更改，如果確實需要更改主機名，需要重新安裝CRS。

實驗對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

實驗平臺： redhat 4.7 + ORACLE 10G + raw +ASM

一．停止oracle相關的所有程式, 包括, asm, node application, crs本身.

1.1 檢視當前系統上crs執行的狀態
[root@raw1 bin]# pwd

/u01/app/oracle/product/crs/bin

[root@raw1 bin]# ./crs_stat -t

Name Type Target State Host

------------------------------------------------------------

ora.raw.db application OFFLINE OFFLINE

ora.raw.dmm.cs application OFFLINE OFFLINE

ora....aw2.srv application OFFLINE OFFLINE

ora....w1.inst application OFFLINE OFFLINE

ora....w2.inst application OFFLINE OFFLINE

ora....SM1.asm application OFFLINE OFFLINE

ora....W1.lsnr application OFFLINE OFFLINE

ora.raw1.gsd application OFFLINE OFFLINE

ora.raw1.ons application OFFLINE OFFLINE

ora.raw1.vip application OFFLINE OFFLINE

ora....SM2.asm application OFFLINE OFFLINE

ora....W2.lsnr application OFFLINE OFFLINE

ora.raw2.gsd application OFFLINE OFFLINE

ora.raw2.ons application OFFLINE OFFLINE

ora.raw2.vip application OFFLINE OFFLINE

1.2 關閉資料庫
　　[root@raw1 bin]# ./srvctl stop database -d raw
1.3 關閉asm例項
[root@raw1 bin]# ./srvctl stop asm -n raw1

[root@raw1 bin]# ./srvctl stop asm -n raw2
1.4 關閉其他應用程式
[root@raw1 bin]# ./srvctl stop nodeapps -n raw1

[root@raw1 bin]# ./srvctl stop nodeapps -n raw2

1.5 關閉crs後臺程式, 在一級中止執行的crs後臺程式, 必須在所有節點上執行.
[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.

二修改作業系統的ip設定

2.1 修改 /etc/hosts 檔案。保持2個節點的一致

[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 在兩個節點上分別修改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 在兩個節點上分別重啟網路服務，是修改的IP生效。

[root@raw1 ~]# service network restart

[root@raw2 ~]# service network restart

三．啟動crs, 設定oracle中ip地址相關的設定.
　　3.1 在兩個節點啟動crs, 並關閉隨crs啟動的應用程式
[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.

由於oracle所有應用設定為自動啟動, 所以在crs啟動時會試圖啟動所有的服務, 但是在對oracle相關的ip地址進行設定時需要crs處於執行狀態. 但是資料庫, asm和node application處於停止狀態, 在一個節點執行以下命令：
　　[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

Name Type Target State Host

------------------------------------------------------------

ora.raw.db application OFFLINE OFFLINE

ora.raw.dmm.cs application OFFLINE OFFLINE

ora....aw2.srv application OFFLINE OFFLINE

ora....w1.inst application OFFLINE OFFLINE

ora....w2.inst application OFFLINE OFFLINE

ora....SM1.asm application OFFLINE OFFLINE

ora....W1.lsnr application OFFLINE OFFLINE

ora.raw1.gsd application OFFLINE OFFLINE

ora.raw1.ons application OFFLINE OFFLINE

ora.raw1.vip application OFFLINE OFFLINE

ora....SM2.asm application OFFLINE OFFLINE

ora....W2.lsnr application OFFLINE OFFLINE

ora.raw2.gsd application OFFLINE OFFLINE

ora.raw2.ons application OFFLINE OFFLINE

ora.raw2.vip application OFFLINE OFFLINE

3.2 使用oifcfg修改網路卡設定, oifconfig可以用來設定和檢視網路卡使用的方式.

注：如果修改的網段相同，可以不做這一步。

-- 檢視當前配置：

[root@raw1 bin]# ./oifcfg getif -global

eth0 10.85.10.0 global public

eth1 192.168.1.0 global cluster_interconnect

-- 刪除當前配置

[root@raw1 bin]# ./oifcfg delif -global eth0

[root@raw1 bin]# ./oifcfg delif -global eth1

[root@raw1 bin]# ./oifcfg getif

-- 重新新增

[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

eth0 10.85.10.0 global public

eth1 192.168.1.0 global cluster_interconnect

[root@racnode2 bin]# ./oifcfg iflist

eth0 192.168.86.0

eth1 192.168.0.0

eth2 192.168.200.0

eth3 192.168.200.0

eth4 192.168.200.0

eth5 192.168.200.0

注意：這裡IP 地址最一個為0. 代表的是一個網段。修改的時候要切記。否在在啟動OCR 時會報如下錯誤：

[ CRSOCR][4054413904] OCR context init failure. Error: PROC-44: 網路地址和網路介面操作中出錯網路地址和網路介面操作錯誤 [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 設定listener.ora和tnsnames.ora, 檢查這些檔案中是否有指定原來ip的地方, 修改為更改後的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配置檔案(/etc/ocfs/cluster.conf),驗證修改後是否可用。

3.5 啟動node applications, asm, 資料庫

[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

Name Type Target State Host

------------------------------------------------------------

ora.raw.db application ONLINE ONLINE raw2

ora.raw.dmm.cs application ONLINE ONLINE raw2

ora....aw2.srv application ONLINE ONLINE raw2

ora....w1.inst application ONLINE ONLINE raw1

ora....w2.inst application ONLINE ONLINE raw2

ora....SM1.asm application ONLINE ONLINE raw1

ora....W1.lsnr application ONLINE ONLINE raw1

ora.raw1.gsd application ONLINE ONLINE raw1

ora.raw1.ons application ONLINE ONLINE raw1

ora.raw1.vip application ONLINE ONLINE raw1

ora....SM2.asm application ONLINE ONLINE raw2

ora....W2.lsnr application ONLINE ONLINE raw2

ora.raw2.gsd application ONLINE ONLINE raw2

ora.raw2.ons application ONLINE ONLINE raw2

ora.raw2.vip application ONLINE ONLINE raw2

若啟動出現問題，參考我的blog：

Oracle RAC 啟動與關閉

http://blog.csdn/tianlesoftware/archive/2010/03/05/5349003.aspx

3.6 確認IP, 修改完成。
[root@raw1 bin]# ifconfig

eth0 Link encap:Ethernet HWaddr 00:0C:29:55:28:FD

inet addr:10.85.10.219 Bcast:10.85.10.255 Mask:255.255.255.0

... ...

eth0:1 Link encap:Ethernet HWaddr 00:0C:29:55:28:FD

inet addr:10.85.10.222 Bcast:10.85.10.255 Mask:255.255.255.0

... ...

eth1 Link encap:Ethernet HWaddr 00:0C:29:55:28:07

inet addr:192.168.1.219 Bcast:192.168.1.255 Mask:255.255.255.0

... ...

lo Link encap:Local Loopback

inet addr:127.0.0.1 Mask:255.0.0.0

[root@raw2 ~]# ifconfig

eth0 Link encap:Ethernet HWaddr 00:0C:29:2E:28:EE

inet addr:10.85.10.221 Bcast:10.85.10.255 Mask:255.255.255.0

... ...

eth0:1 Link encap:Ethernet HWaddr 00:0C:29:2E:28:EE

inet addr:10.85.10.223 Bcast:10.85.10.255 Mask:255.255.255.0

... ...

eth1 Link encap:Ethernet HWaddr 00:0C:29:2E:28:F8

inet addr:192.168.1.221 Bcast:192.168.1.255 Mask:255.255.255.0

... ...

lo Link encap:Local Loopback

inet addr:127.0.0.1 Mask:255.0.0.0

... ...

Oracle RAC 修改 IP 地址

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