安装好漫长
NAT
vim /etc/hosts
#PUBLIC
192.168.56.11 rac1.lihao.com rac1
192.168.56.12 rac2.lihao.com rac2
#VIP
192.168.56.21 rac1-vip.lihao.com rac1-vip
192.168.56.22 rac2-vip.lihao.com rac2-vip
#PRIVATE
10.10.10.11 rac1-priv.lihao.com rac1-priv
10.10.10.12 rac2-priv.lihao.com rac2-priv
vim /etc/racdns
#SCAN
192.168.56.10 rac-scan.lihao.com rac-scan
192.168.56.20 rac-scan.lihao.com rac-scan
192.168.56.30 rac-scan.lihao.com rac-scan
rpm -qa | grep dnsmasq
vim /etc/dnsmasq.conf
增加一行
addn-hosts=/etc/racdns
vim /etc/resolv.conf
nameserver 127.0.0.1
锁定，禁止修改
chattr +i /etc/resolv.conf
nslookup rac-scan
systemctl enable dnsmasq.service
systemctl stop dnsmasq.service
systemctl start dnsmasq.service
systemctl status dnsmasq.service
netstat -tupln
kill -9 1752
nslookup rac-scan
netstat -tupln
systemctl stop firewalld.service
systemctl disable firewalld.service
vi /etc/selinux/config
yum search oracle
yum install oracle-database-preinstall-19c.x86_64
id oracle
groupadd -g 54327 asmdba
groupadd -g 54328 asmoper
groupadd -g 54329 asmadmin
把上面创建的三个组，加入ORACLE用户
usermod -G oinstall,dba,oper,backupdba,kmdba,racdba,asmdba,asmoper,asmadmin oracle
passwd oracle
yum search oracleasm
yum install oracleasm-support.x86_64
https://www.oracle.com/linux/downloads/linux-asmlib-v7-downloads.html
yum install https://download.oracle.com/otn_software/asmlib/oracleasmlib-2.0.12-1.el7.x86_64.rpm
oracleasm configure
oracleasm configure -i
oracleasm configure
ls -l /dev/orcleasm
oracleasm init
mkdir -p /u01/app/19/grid
创建RAC2
修改IP
修改主机名
Hostname
vim /etc/hostname
systemctl restart systemd-hostnamed.service
hostname
退出这个终端，在进去看，兔子就改好了
nslookup rac-scan
创建ASM磁盘
所有的都改成，可共享
在RAC2导入刚才创建的磁盘
对所有磁盘进行格式化
oracleasm createdisk ASM_DATA_01 /dev/sdb1
oracleasm createdisk ASM_DATA_02 /dev/sdc1
oracleasm createdisk ASM_DATA_03 /dev/sdd1
oracleasm createdisk ASM_FRA_01 /dev/sde1
oracleasm createdisk ASM_FRA_02 /dev/sdf1
oracleasm createdisk ASM_FRA_03 /dev/sdg1
oracleasm listdisks
ls -l /dev/oracleasm/disks/
修改RAC2
oracleasm listdisks
oracleasm scandisks
oracleasm listdisks
chown -R oracle:oinstall /u01
chmod -R 775 /u01/
mkdir /u01/soft
unzip LINUX.X64_193000_grid_home.zip -d /u01/app/19/grid/
./gridSetup.sh
/tmp/GridSetupActions2020-06-26_06-40-16PM/CVU_19.0.0.0.0_oracle/runfixup.sh
./crsctl check crs
./crsctl check cluster -all
./crsctl stat res -t
./srvctl status mgmtdb
ps -ef | grep pmon
安装数据库
安装时间可长了，只能等
