Oracle-rac 修改scanip

Oracle_rac 在实时恢复后--实际应用中往往需要修改sacnip对外提供之前的连接ip。

一、修改IP前后对照

前：

public

192.168.0.141

192.168.0.142

vip

192.168.0.143

192.168.0.144

scanip

192.168.0.145

后：

publicip

192.168.0.231

192.168.0.232

vip

192.168.0.233

192.168.0.234

scanip

192.168.0.235

二、停止crs及相关资源

2.1禁止所有节点自动启动并关闭两边节点数据库、监听

[grid@rac01~]srvctl disable listener

[grid@rac01~]srvctl stop listener //关监听

[grid@rac01~]srvctl disable database -d racdb //racdb是数据库名

[grid@rac01~]srvctl stop database -d racdb -o immediate //关数据库

2.2 禁止所有节点自动启动并停止VIP（名字要对应hosts）

[root@rac01~]/u01/app/11.2.0/grid/bin/srvctl disable vip -i "rac01-vip"

[root@rac01~]/u01/app/11.2.0/grid/bin/srvctl disable vip -i "rac02-vip"

[grid@rac01~]$ srvctl stop vip -n rac01

[grid@rac01~]$ srvctl stop vip -n rac02

2.3 禁止所有节点的SCAN_LISTENER的启动，停止所有节点的SCAN_LISTENER

[grid@rac01~]$ srvctl disable scan_listener

[grid@rac01~]$ srvctl stop scan_listener

2.4 禁止所有节点的SCAN的启动，停止所有节点的SCAN

[root@rac01 ~]#/u01/app/11.2.0/grid/bin/srvctl disable scan

[grid@rac01~]$ srvctl stop scan

2.5 停止crs //两个节点都要执行

[root@rac01 ~]#/u01/app/11.2.0/grid/bin/crsctl stop crs

[root@rac02 ~]#/u01/app/11.2.0/grid/bin/crsctl stop crs

三、修改publicip, vip,scan ip

3.1 修改两边的/etc/hosts文件

修改前最好做个备份

修改后如下

#PublicNetwork - (eth0)

192.168.0.231 rac01

192.168.0.232 rac02

#Private Network - (eth1)

5.1.1.1 rac01-priv rac01-priv

5.1.1.2 rac02-priv rac02-priv

#Public Virtual IP - (eth0:1)

192.168.0.233 rac01-vip rac01-vip

192.168.0.234 rac02-vip rac02-vip

# Single Client Access Name (SCAN)

192.168.0.235 rac-scan rac-scan

3.2 修改rac01及rac02网卡配置

(1)rac01：vi /etc/sysconfig/network-scripts/ifcfg-eth0

修改ip为192.168.0.231掩码255.255.255.0

service network restart//重启网卡

(2)rac02：vi/etc/sysconfig/network-scripts/ifcfg-eth0

修改ip为192.168.0.232掩码 255.255.255.0

service network restart//重启网卡

3.3 两边节点启动crs

[root@rac01 ~]#/u01/app/11.2.0/grid/bin/crsctl start crs

[root@rac02 ~]#/u01/app/11.2.0/grid/bin/crsctl start crs

3.4 集群的public IP 设置（如果属于同一网段，可不修改）

start crs后，请稍等一会儿再执行

[root@rac01bin]# ./oifcfg getif //查看下集群的VIP

eth0 192.168.0.0 global public

eth1 5.1.1.0 global cluster_interconnect

[root@rac01bin]# ./oifcfg delif -global eth0

[root@rac01bin]# ./oifcfg setif -global eth0/192.168.5.0:public

[root@rac01/2bin]# ./oifcfg getif //两边查看下集群的VIP

如果需要修改private ip 则需要先用

[root@rac01bin]# ./oifcfg delif -global eth1

[root@rac01bin]#./oifcfg setif -global
eth1/x.x.x.0:cluster_interconnect(注意，我前面修改网卡可没有修改private，private是要在这步先修改后，才可以修改的）

3.5 集群的VIP设置

[root@rac01bin]#./srvctl config vip -n rac01 //先查看集群的VIP

VIPexists.:rac01

VIP exists.:/rac01-vip/192.168.0.233/255.255.255.0/eth0

[root@rac01 bin]# ./srvctl modify nodeapps -n rac01 -A192.168.0.233/255.255.255.0/eth0

[root@rac01 bin]# ./srvctl modify nodeapps -n rac02 -A192.168.0.234/255.255.255.0/eth0

[root@rac01/2bin]#./srvctl config vip -n rac01 //两边检查集群的VIP

3.6 集群的SCANIP设置

[root@rac01bin]# ./srvctl config scan //先查看集群的SCAN IP

SCAN name:rac-scan, Network: 1/192.168.0.0/255.255.255.0/eth0

SCAN VIP name: scan1, IP: /192.168.0.145/192.168.0.145

[root@rac01 bin]# ./srvctl modify scan -n 192.168.0.235

3.6.1如果需要修改private

(1)rac01：vi /etc/sysconfig/network-scripts/ifcfg-eth0

修改ip为15.1.1.1掩码255.255.255.0

service network restart//重启网卡

(2)rac02：vi/etc/sysconfig/network-scripts/ifcfg-eth0

修改ip为15.1.1.2掩码 255.255.255.0

service network restart//重启网卡

3.7 启动VIP、监听、scan和scan_listener、数据库

[root@rac01 bin]#./srvctl enable listener

[root@rac01 bin]#./srvctl enable vip -i "rac01-vip"

[root@rac01 bin]# ./srvctl enable vip -i "rac02-vip"

[root@rac01 bin]# ./srvctl enable scan_listener

[root@rac01 bin]# ./srvctl enable scan

[root@rac01 bin]# ./srvctl enable database -d racdb

[root@rac01 bin]# ./srvctl start listener

[root@rac01bin]# ./srvctl start vip -n rac01,rac02

[root@rac01 bin]# ./srvctl start scan_listener

[root@rac01 bin]# ./srvctl start scan

[root@rac01 bin]# ./srvctl start database -d racdb