二、配置本地yum源
--把安装盘mount到media mount -t iso9660 /dev/cdrom /media
--配置repos添加以下内容 vi /etc/yum.repos.d/oel5.repos [oel5] name = oel 5 DVD basurl = file:///media/Server gpgcheck =0 enabled = 1 --为1表示启用这个repos
三、配置信任关系(oracle用户)
--节点1和节点2分别执行： ssh-keygen -t rsa ssh-keygen -t dsa
--节点1执行： cat ~/.ssh/*.pub >> ~/.ssh/authorized_keys ssh rac2 cat ~/.ssh/*.pub >> ~/.ssh/authorized_keys scp ~/.ssh/authorized_keys rac2:~/.ssh/authorized_keys
总之就是把2边节点的信息写到公钥文件中去，然后互相ssh就不再需要密码了，因为RAC安装时需要在节点之间复制文件
--验证 节点1执行： ssh rac1 date ssh rac2 date ssh rac1-priv date ssh rac2-priv date
节点2执行： ssh rac1 date ssh rac2 date ssh rac1-priv date ssh rac2-priv date
多验证几次，直到不需要输入密码为止，这里要注意authorized_keys中不要漏掉s，我曾经试了半天也没有成功，最后发现是公钥文件名错了，少了个s导致的
四、配置共享磁盘
--添加若干块磁盘并分区 fdisk -l fdisk /dev/sdb fdisk /dev/sdc fdisk /dev/sdd fdisk /dev/sde
如果碰到需要重启后才能识别分区信息，可以使用linux自带的partporbe命令，执行一下就可以在不重启的情况下让kernel识别新的分区 也可以执行partprobe -s进行查看
[root@rac1 ~]# fdisk /dev/sdc
Command (m for help): w The partition table has been altered!
Calling ioctl() to re-read partition table.
WARNING: Re-reading the partition table failed with error 16: Device or resource busy. The kernel still uses the old table. The new table will be used at the next reboot. Syncing disks. [root@rac1 ~]# partprobe -s /dev/sda: msdos partitions 1 2 /dev/sdb: msdos partitions 1 /dev/sdc: msdos partitions 1 /dev/sdd: msdos partitions 1 /dev/sde: msdos partitions 1 [root@rac2 install]#
--绑定磁盘 对于4.x和5.x的系统，绑定方法是不同的
4.x: # vi /etc/sysconfig/rawdevices
/dev/raw/raw1 /dev/sdc1 /dev/raw/raw2 /dev/sdd1 /dev/raw/raw3 /dev/sde1
# vi /etc/udev/permissions.d/50-udev.permissions # raw devices ram*:root:disk:0660 #raw/*:root:disk:0660 raw/*:oracle:dba:0660
5.x: # vi /etc/udev/rules.d/60-raw.rules ACTION=="add",KERNEL=="/dev/sdb1",RUN+="/bin/raw /dev/raw/raw1 %N" ACTION=="add",ENV{MAJOR}=="8",ENV{MINOR}=="17",RUN+="/bin/raw /dev/raw/raw1 %M %m" ACTION=="add",KERNEL=="/dev/sdc1",RUN+="/bin/raw /dev/raw/raw2 %N" ACTION=="add",ENV{MAJOR}=="8",ENV{MINOR}=="33",RUN+="/bin/raw /dev/raw/raw2 %M %m" ACTION=="add",KERNEL=="/dev/sdd1",RUN+="/bin/raw /dev/raw/raw3 %N" ACTION=="add",ENV{MAJOR}=="8",ENV{MINOR}=="49",RUN+="/bin/raw /dev/raw/raw3 %M %m" ACTION=="add",KERNEL=="/dev/sde1",RUN+="/bin/raw /dev/raw/raw4 %N" ACTION=="add",ENV{MAJOR}=="8",ENV{MINOR}=="65",RUN+="/bin/raw /dev/raw/raw4 %M %m" ACTION=="add",KERNEL=="raw*",OWNER="oracle",GROUP="oinstall",MODE="660"
只需要添加红色部分就可以了，然后重启udev，配置正常就会显示如下内容：
[root@rac1 ~]$ ll /dev/raw
total 0 crw-rw---- 1 oracle oinstall 162, 1 Jan 15 22:54 raw1 crw-rw---- 1 oracle oinstall 162, 2 Jan 15 22:24 raw2 crw-rw---- 1 oracle oinstall 162, 3 Jan 15 22:56 raw3 crw-rw---- 1 oracle oinstall 162, 4 Jan 15 22:54 raw4
五、添加环境变量
节点1： [oracle@rac1 ~]$vi .bash_profile export ORACLE_SID=RAC1 export ORACLE_HOME=/u01/oracle/10.2.0/db_1 export ORA_CRS_HOME=/u01/oracle/10.2.0/crs_1 export PATH=$ORACLE_HOME/bin:$ORA_CRS_HOME/bin:$ORACLE_HOME/jdk/bin:$PATH
节点2： [oracle@rac1 ~]$vi .bash_profile export OR