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
