11g两节点RAC添加第三个节点

Posted 2020-07-05 H18010484010

在三个节点，配置hosts文件,新增节点和原有节点都配置为相同的

12.16.10.5  rac1
12.16.10.6  rac2
12.16.10.4  rac3


12.16.10.7  rac1-vip
12.16.10.8  rac2-vip
12.16.10.5  rac3-vip


12.16.12.5  rac1-priv
12.16.12.6  rac2-priv
12.16.12.4  rac3-priv


12.16.10.9  scan

查到1节点和2节点的uid和gid  （在对应用户下输入id敲回车就能查看或者是id <username>）

uid=1200(oracle) gid=1000(oinstall)groups=1000(oinstall),1200(dba),1201(oper),1300(asmdba)

uid=1100(grid)

gid=1000(oinstall)groups=1000(oinstall),1100(asmadmin),1300(asmdba),1301(asmoper)

 

/usr/sbin/groupadd -g 1000 oinstall

/usr/sbin/groupadd -g 1100 asmadmin

/usr/sbin/groupadd -g 1200 dba

/usr/sbin/groupadd -g 1201 oper

/usr/sbin/groupadd -g 1300 asmdba

/usr/sbin/groupadd -g 1301 asmoper

 

useradd -u 1100 -g oinstall -Gasmadmin,asmdba,asmoper grid

useradd -u 1200 -g oinstall -Gdba,oper,asmdba oracle

修改grid、oracle 用户密码

 

#如果发现user的uid不一样 使用usermod -u<uid><user>

 

使添加的节点能够访问共享存储

 

配置grid及oracle的ORACLE_BASE和ORACLE_HOME目录和权限（查看现有rac节点两个用户的ORACLE_BASE和ORACLE_HOME目录，并建立相应的文件夹）

创建grid目录

mkdir -p /u01/app/11.2.0/grid

chown grid:oinstall /u01/  -R

chmod 775 /u01/ -R

创建oracle目录

mkdir -p /u02/app/oracle/product/11.2.0/dbhome_1

chown oracle:oinstall /u02/ -R

chmod 775 /u02/ -R

 

和安装rac时一样，配置操作系统参数（参考1节点和2节点）

 

vi /etc/security/limits.conf

vi /etc/sysctl.conf

vi /etc/pam.d/login

去除时间同步选项

chkconfig ntpd off

service ntpd stop

mv /etc/ntp.conf   /etc/ntp.conf.bak

 

修改grid和oracle的环境变量

 

配置互信关系

                   首先在grid，oracle用户下生成publickey

su - grid

[[email protected] ~]$ /usr/bin/ssh-keygen -t rsa

[[email protected] ~]$ cd .ssh/

[[email protected] .ssh]$ ls

id_rsa id_rsa.pub

su - oracle

[[email protected] ~]$ /usr/bin/ssh-keygen -t rsa

[[email protected] ~]$ cd .ssh/

[[email protected] .ssh]$ ll

-rw------- 1 oracle oinstall 1675 Mar 2521:40 id_rsa

-rw-r--r-- 1 oracle oinstall  404 Mar 25 21:40 id_rsa.pub

grid用户的SSH(11grac2<--->，11grac1<--->rac3两两配置即可）

[[email protected] .ssh]$ scp id_rsa.pubrac3:/home/grid/.ssh/id_rsa1.pub

[[email protected] .ssh]$ scp id_rsa.pub11grac1:/home/grid/.ssh/id_rsa2.pub

[[email protected] .ssh]$ cat *.pub>>authorized_keys

[[email protected] .ssh]$ cat *.pub>>authorized_keys

[[email protected] .ssh]$ scp id_rsa.pubrac3:/home/grid/.ssh/id_rsa2.pub

[[email protected] .ssh]$ scp id_rsa.pub11grac2:/home/grid/.ssh/id_rsa1.pub

[[email protected] .ssh]$ cat *.pub>>authorized_keys

[[email protected] .ssh]$ cat *.pub>>authorized_keys

oracle用户的配置也是一样的。不再赘述。

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

其实Oracle11g已经帮我提供了自动化的脚本sshUserSetup.sh

/g01/11201_install/grid/sshsetup (grid软件包解压之后的目录)

[[email protected] sshsetup]# ls

sshUserSetup.sh

[[email protected] sshsetup]$ pwd

/u01/11201_install/database/sshsetup(oracle软件包解压之后的目录)

[[email protected] sshsetup]$ ls

sshUserSetup.sh

执行如下命令即可。

./sshUserSetup.sh -user grid -hosts"rac1 rac2 rac3" -advanced -noPromptPassphrase

./sshUserSetup.sh -user oracle -hosts"rac1 rac2 rac3" -advanced -noPromptPassphrase

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

老节点oracle及grid用户下检查：
cluvfy stage -pre nodeadd -n rac3 –verbose

 

在节点1上执行添加操作

以grid用户进入到ORACLE_HOME下的oui/bin目录执行如下命令：

export IGNORE_PREADDNODE_CHECKS=Y

./addNode.sh -silent"CLUSTER_NEW_NODES={rac3}" “CLUSTER_NEW_VIRTUAL_HOSTNAMES={rac3-vip}”

在rac3上用root用户执行脚本：

/u01/app/oraInventory/orainstRoot.sh

/u01/app/11.2.0/grid/root.sh

 

如果执行/u01/app/11.2.0/grid/root.sh不成功可执行下面这条删除配置，找到原因后重新执行root.sh脚本

[[email protected] ~]#/u01/app/11.2.0/grid/crs/install/roothas.pl -deconfig –force

遇到下面的错

解决方法：

cd /lib64

[[email protected] lib64]# ls -lrt libcap

libcap-ng.so.0      libcap-ng.so.0.0.0  libcap.so.2         libcap.so.2.16     

[[email protected] lib64]# ls -lrt libcap.so.2

lrwxrwxrwx. 1 root root 14 12月 23 21:21libcap.so.2 -> libcap.so.2.16

[[email protected] lib64]# ln -s libcap.so.2.16libcap.so.1

 

重新执行即可

 

添加数据库软件：

在节点1上以oracle用户执行如下命令：

[[email protected] sshsetup]# su – oracle

[[email protected] ~]$ cd $ORACLE_HOME/oui/bin

./addNode.sh -silent"CLUSTER_NEW_NODES={rac3}"

/u02/app/oracle/product/11.2.0/dbhome_1/root.sh#On nodes rac3

To execute the configuration scripts:

   1. Open a terminal window

   2. Log in as "root"

3. Run thescripts in each cluster node

 

添加数据库实例

在节点1上运行dbca命令，图形化界面添加instance

sys/oracle

如果此步骤中点击下一步出现service name or instance name is not specified 错误提示，请先以grid用户运行netca建立监听可，问题可解决

添加节点后确认信息

1，[[email protected] ~]$crsctl stat res –t

2，[[email protected] ~]$ cd$ORACLE_HOME /OPatch/

   [[email protected]]$ ./opatch lsinventory

3，[[email protected] ~]$ olsnodes–s

   [[email protected]~]$ olsnodes –n

用户等效性

[[email protected] ~]$ cluvfy comp admprv -odb_config -d /u02/app/oracle/product/11.2.0/dbhome_1 -n rac3 –verbose

检查集群的完整性

[[email protected] ~]$ cluvfy stage -post nodeadd-n rac3 –verbose