Oracle12.2 RAC集群管理之修改IP地址
该章节实验是基于此章节基础上操作：
Oracle LinuxR7安装Oracle 12.2 RAC集群实施（DNS解析）-CSDN博客
环境
改前IP：
172.30.21.101 hefei1 hefei1.hefeidb.com
172.30.21.102 hefei2 hefei2.hefeidb.com
10.10.1.101 hefei1prv hefei1prv.hefeidb.com
10.10.1.102 hefei2prv hefei2prv.hefeidb.com
172.30.21.103 hefei1vip hefei1vip.hefeidb.com
172.30.21.104 hefei2vip hefei2vip.hefeidb.com
172.30.21.105 hefeiscan hefeiscan.hefeidb.com
172.30.21.106 hefeiscan hefeiscan.hefeidb.com
172.30.21.107 hefeiscan hefeiscan.hefeidb.com
172.30.21.112 hefeidns hefeidb.com hefeidns.hefeidb.com
改后IP：
172.30.21.121 hefei1 hefei1.hefeidb.com
172.30.21.122 hefei2 hefei2.hefeidb.com
10.10.1.101 hefei1prv hefei1prv.hefeidb.com
10.10.1.102 hefei2prv hefei2prv.hefeidb.com
172.30.21.123 hefei1vip hefei1vip.hefeidb.com
172.30.21.124 hefei2vip hefei2vip.hefeidb.com
172.30.21.125 hefeiscan hefeiscan.hefeidb.com
172.30.21.126 hefeiscan hefeiscan.hefeidb.com
172.30.21.127 hefeiscan hefeiscan.hefeidb.com
172.30.21.112 hefeidns hefeidb.com hefeidns.hefeidb.com停止RAC
先停数据库停监听
grid@hefei1:/home/grid\]$srvctl stop database -d hefeidb -o immediate \[grid@hefei1:/home/grid\]$srvctl stop listener #### 再停crs集群 \[root@hefei1 \~\]# crsctl stop crs \[root@hefei2 \~\]# crsctl stop crs ### 配置/etc/hosts文件 **先不要修改私网IP，后面再修改** \[root@hefei1 \~\]# vi /etc/hosts \[root@hefei2 \~\]# vi /etc/hosts ```sql 172.30.21.121 hefei1 hefei1.hefeidb.com 172.30.21.122 hefei2 hefei2.hefeidb.com 10.10.1.101 hefei1prv hefei1prv.hefeidb.com 10.10.1.102 hefei2prv hefei2prv.hefeidb.com 172.30.21.123 hefei1vip hefei1vip.hefeidb.com 172.30.21.124 hefei2vip hefei2vip.hefeidb.com 172.30.21.125 hefeiscan hefeiscan.hefeidb.com 172.30.21.126 hefeiscan hefeiscan.hefeidb.com 172.30.21.127 hefeiscan hefeiscan.hefeidb.com 172.30.21.112 hefeidns hefeidb.com hefeidns.hefeidb.com ``` ### 修改主机的IP地址 只修改public IP，开始不能修改私网IP \[root@hefei1 \~\]# vi /etc/sysconfig/network-scripts/ifcfg-enp0s3 \[root@hefei2 \~\]# vi /etc/sysconfig/network-scripts/ifcfg-enp0s3 \[root@hefei1 \~\]# service network restart \[root@hefei2 \~\]# service network restart 重新连接 ### 配置DNS   #### 测试dns客户端  #### 清理DNS  ### 修改public ip-vip ip-scan #### 修改pubilc ip su - root crsctl start crs ctsctl check crs crs_stat -t  root 用户查看并修改共享盘网络配置： oifcfg getif  ### 删除旧值并设定新值 oifcfg delif -global enp0s3 oifcfg setif -global enp0s3/172.30.21.0:public  #### 修改vip ip vip 地址没有修改 \[root@hefei1 \~\]# srvctl config vip -n hefei1 \[root@hefei1 \~\]# srvctl config vip -n hefei2 --如果没有自动变成新的ip ，需要以下操作 --【都在一个节点1执行】 srvctl stop listener -n hefei1 srvctl stop listener -n hefei2 srvctl stop vip -n hefei1 --\[报错：srvctl stop vip -n hefei1 -force
srvctl stop vip -n hefei2
修改 VIP 设置：
srvctl modify nodeapps -n hefei1 -A 172.30.21.123/255.255.255.0/enp0s3
srvctl modify nodeapps -n hefei2 -A 172.30.21.124/255.255.255.0/enp0s3
srvctl start vip -n hefei1
srvctl start vip -n hefei2
srvctl start listener -n hefei1
srvctl start listener -n hefei2
再次验证 VIP 修改完成：
修改scan ip
su -root
srvctl config scan
srvctl modify scan -scanname hefeiscan.hefeidb.com
修改private ip
--crs集群是打开的
olsnodes -s
oifcfg getif
--相同的网段不用修改
修改网卡ip地址及hosts的地址
root@hefei1 \~\]# vi /etc/hosts \[root@hefei2 \~\]# vi /etc/hosts \[root@hefei1 \~\]# vi /etc/sysconfig/network-scripts/ifcfg-enp0s8 \[root@hefei2 \~\]# vi /etc/sysconfig/network-scripts/ifcfg-enp0s8 速度要快，不然集群会down，重启网卡service network restart #### 重启主机 \[root@hefei1 \~\]# crsctl stop crs \[root@hefei2\~\]# crsctl stop crs reboot ### Oracle 修改private ip及相关测试  启动数据库\[root@hefei2 \~\]# srvctl start database -d hefeidb  