RedHat 5.6_x86_64 + ASM + RAW+ Oracle 10g RAC （七） 添加节点―初始化环境

1.创建账户

在所有节点上创建所需账户

#groupadd �Cg 500 dba

#useradd -u 1001 -g oinstall -G dba oracle

#password oracle

nobody用户一般操作系统安装往后就存在，如果没有必须创建，该用户在安装完clusterware或RAC后执行一些扩展任务（extjob）

#id nobody

uid=99(nobody) gid=99(nobody) groups=99(nobody)

2.创建目录

在所有节点上创建所需目录并赋予对应权限

#mkdir �Cp /home/oracle/orabase

#mkdir �Cp /home/oracle/orahome/product/10.2.0/db_1

#mkdir �Cp /home/oracle/orahome/product/10.2.0/crs

#mkdir �Cp /home/oracle/orahome/product/10.2.0/asm

#cd /home/oracle

#chmod �CR 775 *

3、设置三个节点/etc/hosts文件内容相同，如下：

127.0.0.1       localhost.localdomain localhost

::1             localhost6.localdomain6 localhost6

192.168.12.241  jason1

192.168.12.242  jason2

192.168.12.193  jason3

10.10.10.241    jason1-priv

10.10.10.242    jason2-priv

10.10.10.193    jason3-priv

192.168.12.243  jason1-vip

192.168.12.244  jason2-vip

192.168.12.194  jason3-vip

4、配置ssh认证

节点jason3上执行如下操作

[oracle@jason3 ~]$ mkdir .ssh

[oracle@jason3 ~]$ chmod 700 .ssh

[oracle@jason3 ~]$ cd .ssh

[oracle@jason3 .ssh]$ ssh-keygen -t rsa

Generating public/private rsa key pair.

Enter file in which to save the key (/home/oracle/.ssh/id_rsa):

Enter passphrase (empty for no passphrase):

Enter same passphrase again:

Your identification has been saved in /home/oracle/.ssh/id_rsa.

Your public key has been saved in /home/oracle/.ssh/id_rsa.pub.

The key fingerprint is:

a5:dd:4b:79:b7:74:0a:b4:e2:26:36:98:f5:de:95:99 oracle@jason3

[oracle@jason3 .ssh]$ ssh-keygen -t dsa

Generating public/private dsa key pair.

Enter file in which to save the key (/home/oracle/.ssh/id_dsa):

Enter passphrase (empty for no passphrase):

Enter same passphrase again:

Your identification has been saved in /home/oracle/.ssh/id_dsa.

Your public key has been saved in /home/oracle/.ssh/id_dsa.pub.

The key fingerprint is:

b2:b8:bd:61:9c:c7:f2:ae:eb:99:36:dd:b5:fd:0a:9e oracle@jason3

节点jason1同步authorized_keys到jason2、jason3

[oracle@jason1 .ssh]$ ssh jason3 cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys

oracle@jason3's password:

[oracle@jason1 .ssh]$ scp authorized_keys jason2:/home/oracle/.ssh/

authorized_keys               100% 2990     2.9KB/s   00:00                                                                                                                                                            100% 2990     2.9KB/s   00:00    

[oracle@jason1 .ssh]$ scp authorized_keys jason3:/home/oracle/.ssh/

authorized_keys               100% 2990     2.9KB/s   00:00    

[oracle@jason1 .ssh]$

在三个节点分别执行下列命令，确保jason1、jason2、jason3三个节点彼此互通，无需输入密码。

ssh jason1 date

ssh jason2 date

ssh jason3 date

ssh jason1-priv date

ssh jason2-privdate

ssh jason3-priv date

如节点jason1上执行如下：

[oracle@jason1 admin]$ cd

[oracle@jason1 ~]$ ssh jason1 date

Wed Dec 11 17:47:30 CST 2013

[oracle@jason1 ~]$ ssh jason1-priv date

Wed Dec 11 17:47:34 CST 2013

[oracle@jason1 ~]$ ssh jason2 date

Wed Dec 11 17:47:38 CST 2013

[oracle@jason1 ~]$ ssh jason2-priv date

Wed Dec 11 17:47:42 CST 2013

[oracle@jason1 ~]$ ssh jason3 date

Wed Dec 11 17:47:45 CST 2013

[oracle@jason1 ~]$ ssh jason3-priv date

Wed Dec 11 17:47:49 CST 2013

[oracle@jason1 ~]$

5、建立hangcheck模块加载

在所有节点上检测是否安装了hangcheck模块。

[root@jason3 ~]# find /lib/modules -name "hangcheck-timer.ko"

/lib/modules/2.6.18-238.el5/kernel/drivers/char/hangcheck-timer.ko

方法1：设置模块为自动加载

echo“options hangcheck-timer hangcheck_tick=30 hangcheck_margin=180”>> /etc/modprobe.conf

echo “modprobe hangcheck” >> /etc/rc.local

方法2：在/etc/rc.local增加以下内容：

[root@jason3 ~]# insmod /lib/modules/2.6.18-238.el5/kernel/drivers/char/hangcheck-timer.ko  hangcheck_tick=30  hangcheck_margin=180

检测模块是否运行

[root@jason3 ~]# lsmod |grep hangcheck

hangcheck_timer        37465  0

6.配置内核参数

在所有节点编辑sysctl.conf文件，添加如下内容：

#vi /etc/sysctl.conf

kernel.sem = 250  32000  100 128

kernel.shmmni = 4096

fs.file-max = 101365

net.ipv4.ip_local_port_range = 9000 65500

net.core.rmem_default = 1048576

net.core.rmem_max = 1048576

net.core.wmem_default = 262144

net.core.wmem_max = 262144

要使配置立即生效，执行sysctl  �Cp

7.设置Shell对Oracle用户的限制

在每个节点上执行相同的操作，编辑/etc/security/limits.conf，添加如下内容：

#For Oracle

oracle          soft    nproc           2047

oracle          hard    nproc           16384

oracle          soft    nofile          1024

oracle          hard    nofile          65536

oracle          soft    memlock         3145728

oracle          hard    memlock         3145728

编辑/etc/pam.d/login，添加如下内容：

#For Oracle

session    required     /lib/security/pam_limits.so

8.配置用户资源限制

在每个节点上执行相同的操作,编辑/etc/profile增加以下内容：

if [ $USER = "oracle" ]; then  

  if [ $SHELL = "/bin/ksh" ]; then

      ulimit -p 16384

      ulimit -n 65536

  else

      ulimit -u 16384 -n 65536

  fi

  umask 022

fi

9.安装配置ASM

[root@jason3 mnt]# rpm -ivh oracleasm-support-2.1.8-1.el5.x86_64.rpm

warning: oracleasm-support-2.1.8-1.el5.x86_64.rpm: Header V3 DSA signature: NOKEY, key ID 1e5e0159

Preparing...                ########################################### [100%]

  1:oracleasm-support      ########################################### [100%]

[root@jason3 mnt]# rpm -ivh oracleasm-2.6.18-238.el5-2.0.5-1.el5.x86_64.rpm

warning: oracleasm-2.6.18-238.el5-2.0.5-1.el5.x86_64.rpm: Header V3 DSA signature: NOKEY, key ID 1e5e0159

Preparing...                ########################################### [100%]

  1:oracleasm-2.6.18-238.el########################################### [100%]

[root@jason3 mnt]# rpm -ivh oracleasmlib-2.0.4-1.el5.x86_64.rpm

warning: oracleasmlib-2.0.4-1.el5.x86_64.rpm: Header V3 DSA signature: NOKEY, key ID 1e5e0159

Preparing...                ########################################### [100%]

  1:oracleasmlib           ########################################### [100%]

[root@jason3 mnt]#  /etc/init.d/oracleasm configure

Configuring the Oracle ASM library driver.

This will configure the on-boot properties of the Oracle ASM library

driver.  The following questions will determine whether the driver is

loaded on boot and what permissions it will have.  The current values

will be shown in brackets ('[]').  Hitting <ENTER> without typing an

answer will keep that current value.  Ctrl-C will abort.

Default user to own the driver interface []: oracle

Default group to own the driver interface []: dba

Start Oracle ASM library driver on boot (y/n) [n]: y

Scan for Oracle ASM disks on boot (y/n) [y]: y

Writing Oracle ASM library driver configuration: done

Initializing the Oracle ASMLib driver:                     [  OK  ]

Scanning the system for Oracle ASMLib disks:               [  OK  ]

[root@jason3 mnt]# cd /etc/init.d/

[root@jason3 init.d]# oracleasm scandisks

Reloading disk partitions: done

Cleaning any stale ASM disks...

Scanning system for ASM disks...

[root@jason3 init.d]# oracleasm listdisks

VOL1

VOL2

VOL3

[root@jason3 init.d]#