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怎么修改linux中rac上IP地址

发表于：2026-11-02 作者：千家信息网编辑

千家信息网最后更新 2026年11月02日，本篇内容主要讲解"怎么修改linux中rac上IP地址"，感兴趣的朋友不妨来看看。本文介绍的方法操作简单快捷，实用性强。下面就让小编来带大家学习"怎么修改linux中rac上IP地址"吧!修改前IP：

千家信息网最后更新 2026年11月02日怎么修改linux中rac上IP地址

本篇内容主要讲解"怎么修改linux中rac上IP地址"，感兴趣的朋友不妨来看看。本文介绍的方法操作简单快捷，实用性强。下面就让小编来带大家学习"怎么修改linux中rac上IP地址"吧!

修改前IP：

#####PUBLIC IP #####

192.168.11.100 db1

192.168.11.200 db2

##### VIP #####

192.168.11.111 db1_vip

192.168.11.222 db2_vip

#####SCAN IP #####

192.168.11.101 scanip

修改后IP：

#####PUBLIC IP #####

192.168.57.100 db1

192.168.57.200 db2

##### VIP #####

192.168.57.111 db1_vip

192.168.57.222 db2_vip

#####SCAN IP #####

192.168.57.101 scanip

修改网段11..改成57..

一准备

1 关闭数据库

[grid@db1 ~]$ srvctl status database -d orcl
Instance orcl1 is running on node db1
Instance orcl2 is running on node db2
[grid@db1 ~]$ srvctl stop database -d orcl
[grid@db1 ~]$ srvctl status database -d orcl
Instance orcl1 is not running on node db1
Instance orcl2 is not running on node db2

2 查看原scan的信息

[grid@db1 ~]$ srvctl config scan
SCAN name: scanip, Network: 1/192.168.11.0/255.255.255.0/eth0
SCAN VIP name: scan1, IP: /scanip/192.168.11.101
[grid@db1 ~]$ srvctl config listener
Name: LISTENER
Network: 1, Owner: grid
Home:
End points: TCP:1521

3 关闭listener、crs

[grid@db1 ~]$ srvctl stop listener
[grid@db1 ~]$ crsctl stop crs -f
CRS-4563: Insufficient user privileges.

CRS-4000: Command Stop failed, or completed with errors.
[grid@db1 ~]$ su root
Password:
[root@db1 grid]# crsctl stop crs -f

[root@db2 grid]# crsctl stop crs -f

4 修改/etc/hosts（两个节点）

[root@db1 ~]# vi /etc/hosts

#####PUBLIC IP #####
192.168.57.100 db1
192.168.57.200 db2

5 修改os网卡信息（两个节点）

vi /etc/sysconfig/network-scripts/ifcfg-eth0

service network restart

然后在虚拟机上重新配置网卡连接方式，（在宿主机上新建立一个虚拟网卡虚拟机桥接在该网卡上）

6 启动crs（两个节点）

[root@db1 grid]# crsctl start crs
CRS-4123: Oracle High Availability Services has been started.

[root@db2 grid]# crsctl start crs
CRS-4123: Oracle High Availability Services has been started.

1 修改public ip

--节点1

1 查看信息（原）

[root@db1 grid]# oifcfg getif
eth2 10.0.0.0 global cluster_interconnect
eth0 192.168.11.0 global public

2 删除原ip

[root@db1 grid]# oifcfg delif -global eth0/192.168.11.0

3 注册新ip

[root@db1 grid]# oifcfg setif -global eth0/192.168.57.0:public

4 验证

[root@db1 grid]# oifcfg getif
eth2 10.0.0.0 global cluster_interconnect
eth0 192.168.57.0 global public

--节点2

[root@db2 grid]# oifcfg getif
eth2 10.0.0.0 global cluster_interconnect
eth0 192.168.57.0 global public --网段已经改过来了。我感觉已经不用删除，再添加了

[root@db2 grid]# oifcfg delif -global eth0/192.168.11.0
[root@db2 grid]# oifcfg setif -global eth0/192.168.57.0:public
[root@db2 grid]# oifcfg getif
eth2 10.0.0.0 global cluster_interconnect
eth0 192.168.57.0 global public

2 修改vip

1 查看vip配置

[root@db2 admin]# srvctl config nodeapps -a
Network exists: 1/192.168.11.0/255.255.255.0/eth0, type static
VIP exists: /db1_vip/192.168.11.111/192.168.11.0/255.255.255.0/eth0, hosting node db1
VIP exists: /db2_vip/192.168.11.222/192.168.11.0/255.255.255.0/eth0, hosting node db2

2 停实例和vip

[root@db1 grid]# srvctl stop instance -d rac -n db1
[root@db1 grid]# srvctl stop vip -n db1 -f

[root@db2 grid]# srvctl stop instance -d rac -n db2
[root@db2 grid]# srvctl stop vip -n db2 -f

3 修改hosts文件（root两个节点）

vi /etc/hosts

##### VIP #####

192.168.57.111 db1_vip

192.168.57.222 db2_vip

4 修改vip的配置

--节点1

[root@db1 grid]# /grid/11.2.0/grid/bin/srvctl modify nodeapps -n db2 -A 192.168.57.111/255.255.255.0/eth0

--节点2

[root@db2 grid]# /grid/11.2.0/grid/bin/srvctl modify nodeapps -n db2 -A 192.168.57.222/255.255.255.0/eth0

5 启动

--节点1

[root@db1 grid]# srvctl start vip -n db1
PRKO-2420 : VIP is already started on node(s): db1
[root@db1 grid]# srvctl start listener -n db1
[root@db1 grid]# srvctl start instance -d rac -n db1

--节点2

[root@db2 grid]# srvctl start vip -n db2
[root@db2 grid]# srvctl start listener -n db2
[root@db2 grid]# srvctl start instance -d rac -n db2

6 验证

[root@db2 grid]# srvctl config nodeapps -a
Network exists: 1/192.168.57.0/255.255.255.0/eth0, type static
VIP exists: /db1_vip/192.168.57.111/192.168.57.0/255.255.255.0/eth0, hosting node db1
VIP exists: /192.168.57.222/192.168.57.222/192.168.57.0/255.255.255.0/eth0, hosting node db2

不知道什么原因，这里vip的名字不出现，也不太影响

3 修改scan ip（单节点执行）

1停止scan服务和scan

[root@db1 grid]# srvctl stop scan_listener
[root@db1 grid]# srvctl stop scan

2 修改host文件

vi /etc/hosts

#####SCAN IP #####

192.168.57.101 scanip

3 修改scan配置（root）
[root@db1 grid]# srvctl modify scan -n scanip --这里是自己hosts解析的scanip的名字

4 修改scan listener配置

[root@db1 grid]# srvctl modify scan_listener -u

5 启动

[root@db1 grid]# srvctl start scan_listener

6 启动数据库

[root@db1 grid]# srvctl start database -d orcl

7 验证

[root@db1 grid]# srvctl config scan
SCAN name: scanip, Network: 1/192.168.57.0/255.255.255.0/eth0
SCAN VIP name: scan1, IP: /scanip/192.168.57.101

--查看集群资源

[root@db1 grid]# crsctl stat res -t
--------------------------------------------------------------------------------
NAME TARGET STATE SERVER STATE_DETAILS
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.LISTENER.lsnr
ONLINE ONLINE db1
ONLINE ONLINE db2
ora.gsd
OFFLINE OFFLINE db1
OFFLINE OFFLINE db2
ora.net1.network
ONLINE ONLINE db1
ONLINE ONLINE db2
ora.ons
ONLINE ONLINE db1
ONLINE ONLINE db2
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.LISTENER_SCAN1.lsnr
1 ONLINE ONLINE db2
ora.db1.vip
1 ONLINE ONLINE db1
ora.db2.vip
1 ONLINE ONLINE db2
ora.orcl.db
1 ONLINE ONLINE db1 Open
2 ONLINE ONLINE db2 Open
ora.scan1.vip
1 ONLINE ONLINE db2