手把手教你用VMware在linux下安裝oracle10g RAC(6)-配置Clusterware安裝環境

1、設定ssh

在clusterware (CRS) 和 Rac Database安裝過程中，Oracle Universal Installer (OUI) 必須能夠以 oracle 的身份自動將軟體複製到所有 RAC 節點。這裡我們通過配置ssh 讓oracle使用者擁有不輸入密碼即可訪問各節點的能力。

首先兩個節點間互ping，要確保都是通的

[root@node1 ~]# ping 192.168.100.102

[root@node1 ~]# ping 10.10.17.222

要建立使用者等效性，需要在兩個節點上以 oracle 使用者身份生成使用者的公鑰和私鑰，首先在node1執行：

[root@node1 opt]# su - oracle

[oracle@node1 ~]$ mkdir ~/.ssh

[oracle@node1 ~]$ chmod 700 ~/.ssh

[oracle@node1 ~]$ 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:

d2:69:eb:ac:86:62:27:50:99:ff:e8:1e:a2:e6:5d:7f oracle@node1

[oracle@node1 ~]$ 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:

0a:9a:20:46:a2:28:ec:72:23:82:f2:9d:f8:62:9b:d1 oracle@node1

然後換node2執行

[root@node2 ~]# ping 192.168.100.102

[root@node2 ~]# ping 10.10.17.222

[root@node2 opt]# su - oracle

[oracle@node2 ~]$ mkdir ~/.ssh

[oracle@node2 ~]$ chmod 700 ~/.ssh

[oracle@node2 ~]$ 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:

dd:be:7a:37:e4:b5:f0:b2:24:95:50:61:ea:a1:61:07 oracle@node2

[oracle@node2 ~]$ 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:

bc:b5:cb:43:c7:19:53:d6:f7:16:69:85:12:7f:aa:be oracle@node2

切換回node1，接著執行：

[oracle@node1 ~]$ cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys

[oracle@node1 ~]$ cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys

提示：下列命令會提示你輸入node2的oracle密碼，按照提示輸入即可，如果失敗可重新嘗試執行命令。

[oracle@node1 ~]$ ssh node2 cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys

The authenticity of host 'node2 (192.168.100.102)' can't be established.

RSA key fingerprint is 92:d1:ce:5b:c8:a1:52:d5:ac:00:5f:48:5d:12:06:e4.

Are you sure you want to continue connecting (yes/no)? yes

Warning: Permanently added 'node2,192.168.100.102' (RSA) to the list of known hosts.

oracle@node2's password:

[oracle@node1 ~]$ ssh node2 cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys

oracle@node2's password:

[oracle@node1 ~]$ scp ~/.ssh/authorized_keys node2:~/.ssh/authorized_keys

oracle@node2's password:

authorized_keys 100% 1992 2.0KB/s 00:00

兩機相互執行，看看是否還需要輸入密碼

[oracle@node1 ~]$ ssh node1 date

[oracle@node1 ~]$ ssh node2 date

[oracle@node1 ~]$ ssh node1-priv date

[oracle@node1 ~]$ ssh node2-priv date

切換至node2執行

[oracle@node2 ~]$ ssh node1 date

[oracle@node2 ~]$ ssh node2 date

[oracle@node2 ~]$ ssh node1-priv date

[oracle@node2 ~]$ ssh node2-priv date

提示：

注意命令的返回資訊，由於rac對節點間時間較敏感，因此如果此處顯示節點單時間不一至，建議同步(一般相隔超過20秒就需要同步時間了)。

2、配置asm

注意：必須以root身份進行

首先在node1執行：

[root@node1 ~]# /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 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

Fix permissions of Oracle ASM disks on boot (y/n) [y]: y

Writing Oracle ASM library driver configuration: [ OK ]

Loading module "oracleasm": [ OK ]

Mounting ASMlib driver filesystem: [ OK ]

Scanning system for ASM disks: [ OK ]

提示：如果本步執行出錯(可能出錯機率最高的是在Scanning system for ASM)，不妨將轉換一下命令列的執行方式，改成:

[root@node1 ~]# sh /etc/init.d/oracleasm configure

有可能解決你的問題！

然後切換至node2執行

[root@node2 ~]# /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 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

Fix permissions of Oracle ASM disks on boot (y/n) [y]: y

Writing Oracle ASM library driver configuration: [ OK ]

Loading module "oracleasm": [ OK ]

Mounting ASMlib driver filesystem: [ OK ]

Scanning system for ASM disks: [ OK ]

再切換回node1執行

[root@node1 ~]# /etc/init.d/oracleasm createdisk VOL1 /dev/sdd1

Marking disk "/dev/sdd1" as an ASM disk: [ OK ]

[root@node1 ~]# /etc/init.d/oracleasm createdisk VOL2 /dev/sde1

Marking disk "/dev/sde1" as an ASM disk: [ OK ]

[root@node1 linux-patch]# /etc/init.d/oracleasm scandisks

Scanning system for ASM disks: [ OK ]

檢視一下當前的磁碟組：

Scanning system for ASM disks: [ OK ]

[root@node1 ~]# /etc/init.d/oracleasm listdisks

VOL1

VOL2

Node2上也檢視一下當前磁碟組：

[root@node2 ~]# /etc/init.d/oracleasm scandisks

Scanning system for ASM disks: [ OK ]

[root@node2 ~]# /etc/init.d/oracleasm listdisks

VOL1

VOL2

Ok,配置完成，準備進入到crs的安裝階段

=============================================

檢視前面的連載：

來自 “ ITPUB部落格 ” ，連結：http://blog.itpub.net/7607759/viewspace-351954/，如需轉載，請註明出處，否則將追究法律責任。

手把手教你用VMware在linux下安裝oracle10g RAC(6)-配置Clusterware安裝環境

相關文章