RAC環境下修改IP —— 10G

 由於種種原因，可能會遇到需要改服務器IP的情況，完全屬於吃飽了撐着的事情，DBA就慘了，單實例如果有用dbconsole，還得重新刪掉重建才能使用，rac環境就更悲催了！想想任某人對IT行業的評價，笑而不語…

修改前：這裏用DNS解析就改DNS，沒用DNS就改各個節點的hosts文件

[root@rac1 ~]# cat /etc/hosts
127.0.0.1               localhost.localdomain localhost
192.168.1.41            rac1.yang.com      rac1
192.168.122.41          rac1-priv.yang.com rac1-priv
192.168.1.141           rac1-vip.yang.com  rac1-vip

192.168.1.42            rac2.yang.com      rac2
192.168.122.42          rac2-priv.yang.com rac2-priv
192.168.1.142           rac2-vip.yang.com  rac2-vip 

修改後：

 [root@rac1 ~]# cat /etc/hosts
127.0.0.1               localhost.localdomain localhost
192.168.2.41            rac1.yang.com      rac1
192.168.123.41          rac1-priv.yang.com rac1-priv
192.168.2.141           rac1-vip.yang.com  rac1-vip

192.168.2.42            rac2.yang.com      rac2
192.168.123.42          rac2-priv.yang.com rac2-priv
192.168.2.142           rac2-vip.yang.com  rac2-vip

1：關閉數據庫實例，asm實例，nodeapps

[oracle@rac2 ~]$ crs_stat -t -v
Name           Type           R/RA   F/FT   Target    State     Host
----------------------------------------------------------------------
ora.rac.db     application    0/0    0/1    ONLINE    ONLINE    rac1
ora....c1.inst application    0/5    0/0    ONLINE    ONLINE    rac1
ora....c2.inst application    0/5    0/0    ONLINE    ONLINE    rac2
ora....SM1.asm application    0/5    0/0    ONLINE    ONLINE    rac1
ora....C1.lsnr application    0/5    0/0    ONLINE    ONLINE    rac1
ora.rac1.gsd   application    0/5    0/0    ONLINE    ONLINE    rac1
ora.rac1.ons   application    0/3    0/0    ONLINE    ONLINE    rac1
ora.rac1.vip   application    0/0    0/0    ONLINE    ONLINE    rac1
ora....SM2.asm application    0/5    0/0    ONLINE    ONLINE    rac2
ora....C2.lsnr application    0/5    0/0    ONLINE    ONLINE    rac2
ora.rac2.gsd   application    0/5    0/0    ONLINE    ONLINE    rac2
ora.rac2.ons   application    0/3    0/0    ONLINE    ONLINE    rac2
ora.rac2.vip   application    0/0    0/0    ONLINE    ONLINE    rac2
[oracle@rac2 ~]$ srvctl stop database -d rac -o immediate
[oracle@rac2 ~]$ crs_stop -all

2:操作系統級別修改ip地址，重啓2個節點，發現VIP和listener不正常

[oracle@rac1 ~]$ ip a |grep inet |grep -v 'inet6'
    inet 127.0.0.1/8 scope host lo
    inet 192.168.2.41/24 brd 192.168.2.255 scope global eth0
    inet 192.168.123.41/24 brd 192.168.123.255 scope global eth1

[oracle@rac2 ~]$ ip a |grep inet |grep -v 'inet6'
    inet 127.0.0.1/8 scope host lo
    inet 192.168.2.42/24 brd 192.168.2.255 scope global eth0
    inet 192.168.123.42/24 brd 192.168.123.255 scope global eth1

[oracle@rac1 ~]$ crs_stat -t -v
Name           Type           R/RA   F/FT   Target    State     Host
----------------------------------------------------------------------
ora.rac.db     application    0/0    0/1    ONLINE    ONLINE    rac1
ora....c1.inst application    0/5    0/0    ONLINE    ONLINE    rac1
ora....c2.inst application    0/5    0/0    ONLINE    ONLINE    rac2
ora....SM1.asm application    0/5    0/0    ONLINE    ONLINE    rac1
ora....C1.lsnr application    0/5    0/0    ONLINE    OFFLINE
ora.rac1.gsd   application    0/5    0/0    ONLINE    ONLINE    rac1
ora.rac1.ons   application    0/3    0/0    ONLINE    ONLINE    rac1
ora.rac1.vip   application    0/0    0/0    ONLINE    OFFLINE
ora....SM2.asm application    0/5    0/0    ONLINE    ONLINE    rac2
ora....C2.lsnr application    0/5    0/0    ONLINE    OFFLINE
ora.rac2.gsd   application    0/5    0/0    ONLINE    ONLINE    rac2
ora.rac2.ons   application    0/3    0/0    ONLINE    ONLINE    rac2
ora.rac2.vip   application    0/0    0/0    ONLINE    OFFLINE

3：修改2個節點的listener.ora文件，重啓監聽器，發現一切正常，難道這樣就ok了？

[oracle@rac1 ~]$ cd $ORACLE_HOME/network/admin
[oracle@rac1 admin]$ grep -v '^#' listener.ora
LISTENER_RAC1 =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = rac1-vip.yang.com)(PORT = 1521)(IP = FIRST))
      (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.2.41)(PORT = 1521)(IP = FIRST))
    )
  )

SID_LIST_LISTENER_RAC1 =
  (SID_LIST =
    (SID_DESC =
      (ORACLE_HOME = /u01/app/oracle/product/10.2.0/db_1)
      (SID_NAME = rac1)
    )
    (SID_DESC =
      (SID_NAME = PLSExtProc)
      (ORACLE_HOME = /u01/app/oracle/product/10.2.0/db_1)
      (PROGRAM = extproc)
    )
  )

[oracle@rac1 ~]$ srvctl stop listener -n rac1
[oracle@rac1 ~]$ srvctl stop listener -n rac2
[oracle@rac1 ~]$ srvctl start listener -n rac1
[oracle@rac1 ~]$ srvctl start listener -n rac2

[oracle@rac1 ~]$ crs_stat -t -v
Name           Type           R/RA   F/FT   Target    State     Host
----------------------------------------------------------------------
ora.rac.db     application    0/0    0/1    ONLINE    ONLINE    rac1
ora....c1.inst application    0/5    0/0    ONLINE    ONLINE    rac1
ora....c2.inst application    0/5    0/0    ONLINE    ONLINE    rac2
ora....SM1.asm application    0/5    0/0    ONLINE    ONLINE    rac1
ora....C1.lsnr application    0/5    0/0    ONLINE    ONLINE    rac1
ora.rac1.gsd   application    0/5    0/0    ONLINE    ONLINE    rac1
ora.rac1.ons   application    0/3    0/0    ONLINE    ONLINE    rac1
ora.rac1.vip   application    0/0    0/0    ONLINE    ONLINE    rac1
ora....SM2.asm application    0/5    0/0    ONLINE    ONLINE    rac2
ora....C2.lsnr application    0/5    0/0    ONLINE    ONLINE    rac2
ora.rac2.gsd   application    0/5    0/0    ONLINE    ONLINE    rac2
ora.rac2.ons   application    0/3    0/0    ONLINE    ONLINE    rac2
ora.rac2.vip   application    0/0    0/0    ONLINE    ONLINE    rac2

4：查看下VIP，發現依然是舊的，在2個節點上使用oifcfg改(使用root用戶)，這裏估計也可以使用vipca工具改

[oracle@rac1 ~]$ ip a |grep inet |grep -v 'inet6'
    inet 127.0.0.1/8 scope host lo
    inet 192.168.2.41/24 brd 192.168.2.255 scope global eth0
    inet 192.168.1.141/24 brd 192.168.1.255 scope global eth0:1
    inet 192.168.123.41/24 brd 192.168.123.255 scope global eth1

[root@rac1 ~]# cd /u01/app/oracle/product/10.2.0/crs_1/bin/
[root@rac1 bin]# ./oifcfg iflist
eth0  192.168.2.0
eth0  192.168.1.0
eth1  192.168.123.0

[root@rac1 bin]# ./oifcfg getif
[root@rac1 bin]# ./oifcfg setif -global eth0/192.168.2.0:public
[root@rac1 bin]# ./oifcfg setif -global eth1/192.168.123.0:cluster_interconnect
[root@rac1 bin]# ./oifcfg getif
eth0  192.168.2.0  global  public
eth1  192.168.123.0  global  cluster_interconnect

[root@rac2 bin]# ./oifcfg iflist
eth0  192.168.2.0
eth0  192.168.1.0
eth1  192.168.123.0

[root@rac2 bin]# ./oifcfg getif
eth0  192.168.2.0  global  public
eth1  192.168.123.0  global  cluster_interconnect

[oracle@rac1 ~]$ srvctl stop database -d rac -o immediate
[oracle@rac1 ~]$ srvctl stop listener -n rac1
[oracle@rac1 ~]$ srvctl stop listener -n rac2

[root@rac1 bin]# ./srvctl modify nodeapps -n rac1  -A 192.168.2.141/255.255.255.0/eth0
[root@rac2 bin]# ./srvctl modify nodeapps -n rac2  -A 192.168.2.142/255.255.255.0/eth0

5:修改完，發現新的VIP和舊的VIP都綁定在網卡上，於是重啓2個節點，重啓後只綁定了新的VIP，nodeapps，asm和數據庫實例都隨着crs的啓動而自動online!(這裏忘記使用service network restart命令測試，失敗！)

[oracle@rac1 ~]$ crs_start -all
[oracle@rac1 ~]$ ip a |grep 'inet' |grep -v 'inet6'
    inet 127.0.0.1/8 scope host lo
    inet 192.168.2.41/24 brd 192.168.2.255 scope global eth0
    inet 192.168.1.141/24 brd 192.168.1.255 scope global eth0:1
    inet 192.168.2.141/24 brd 192.168.2.255 scope global secondary eth0:2
    inet 192.168.123.41/24 brd 192.168.123.255 scope global eth1

[root@rac1 ~]# uptime
 20:24:25 up 6 min,  1 user,  load average: 2.80, 3.15, 1.50
[root@rac1 ~]# ip a |grep inet |grep -v inet6
    inet 127.0.0.1/8 scope host lo
    inet 192.168.2.41/24 brd 192.168.2.255 scope global eth0
    inet 192.168.2.141/24 brd 192.168.2.255 scope global secondary eth0:1
    inet 192.168.123.41/24 brd 192.168.123.255 scope global eth1

[root@rac1 ~]# cd /u01/app/oracle/product/10.2.0/crs_1/bin/
[root@rac1 bin]# ./oifcfg iflist
eth0  192.168.2.0
eth1  192.168.123.0
[root@rac1 bin]# ./oifcfg getif
eth0  192.168.2.0  global  public
eth1  192.168.123.0  global  cluster_interconnect

[root@rac1 bin]# su - oracle
[oracle@rac1 ~]$ crs_stat -t -v
Name           Type           R/RA   F/FT   Target    State     Host
----------------------------------------------------------------------
ora.rac.db     application    0/0    0/1    ONLINE    ONLINE    rac2
ora....c1.inst application    0/5    0/0    ONLINE    ONLINE    rac1
ora....c2.inst application    0/5    0/0    ONLINE    ONLINE    rac2
ora....SM1.asm application    0/5    0/0    ONLINE    ONLINE    rac1
ora....C1.lsnr application    0/5    0/0    ONLINE    ONLINE    rac1
ora.rac1.gsd   application    0/5    0/0    ONLINE    ONLINE    rac1
ora.rac1.ons   application    0/3    0/0    ONLINE    ONLINE    rac1
ora.rac1.vip   application    0/0    0/0    ONLINE    ONLINE    rac1
ora....SM2.asm application    0/5    0/0    ONLINE    ONLINE    rac2
ora....C2.lsnr application    0/5    0/0    ONLINE    ONLINE    rac2
ora.rac2.gsd   application    0/5    0/0    ONLINE    ONLINE    rac2
ora.rac2.ons   application    0/3    0/0    ONLINE    ONLINE    rac2
ora.rac2.vip   application    0/0    0/0    ONLINE    ONLINE    rac2

6：測試下，發現正常！

[oracle@rhel6 admin]$ tail -17 tnsnames.ora
RAC =
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.2.141)(PORT = 1521))
      (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.2.142)(PORT = 1521))
    )
    (LOAD_BALANCE=YES)
    (FAILOVER=YES)
    (CONNECT_DATA =
      (SERVICE_NAME = rac.yang.com)
      (FAILOVER_MODE =
       (TYPE = SELECT)
       (METHOD = BASIC)
       (RETRIES = 180)
       (DELAY = 5))
    )
  )

[oracle@rhel6 admin]$ sqlplus sys/123456@rac as sysdba
SQL*Plus: Release 10.2.0.1.0 - Production on Mon Mar 26 20:28:02 2012
Copyright (c) 1982, 2005, Oracle.  All rights reserved.

Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.5.0 - 64bit Production
With the Partitioning, Real Application Clusters, OLAP, Data Mining
and Real Application Testing options

SQL> select instance_name from v$instance;

INSTANCE_NAME
----------------
rac1

備註：這裏rac未使用網格控制器管理，後期可以研究下，修改完IP後，如何向網格控制器重新註冊！數據庫版本是10.2.0.5，稍後也將測試下11g的rac,另外修改前還是備份下OCR比較保險點，有閒功夫的話，數據庫也備份一次吧！