Oracle 11gR2构建RAC之（3）--安装grid前环境检测

系统环境：

操作系统：RedHat EL5

Cluster： Oracle GI(Grid Infrastructure)

Oracle：  Oracle 11.2.0.1.0

如图所示：RAC 系统架构

三、安装GI之前，可以以grid用户的身份对环境进行检测。

以grid 用户的身份校验安装环境（在grid的安装软件包目录下）

[grid@node1 grid]$ ./runcluvfy.sh stage -pre crsinst -n node1,node2 -fixup -verbose---在检测中会提示，“failed”的位置，需要fixup.
1、需要安装的软件包（all nodes）
配置yum安装环境：
[root@node1 yum.repos.d]# cp rhel-debuginfo.repo yum.repo
[root@node1 yum.repos.d]# ls
rhel-debuginfo.repo  yum.repo
[root@node1 yum.repos.d]# cat yum.repo
[Base]
name=Red Hat Enterprise Linux
baseurl=file:///media/Server
enabled=1
gpgcheck=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
挂载linux ISO 光盘：
[root@node1 yum.repos.d]#mount /dev/hdc  /media
安装软件：
libaio-devel.i386 0:0.3.106-5
sysstat.i386 0:7.0.2-3.el5
unixODBC-2.2.11-7.1
unixODBC-devel-2.2.11-7.1
unixODBC-kde-2.2.11-7.1
2、配置用户之间的信任关系（oracle和grid）
建立节点之间oracle 、grid 用户之间的信任（通过ssh 建立公钥和私钥）
=====Oracle==========
1）生成密钥对（all nodes）
[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:
64:a6:4a:77:db:33:a4:aa:6e:ca:8f:5f:2f:77:0f:40 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:
7c:41:b5:0f:81:06:ad:30:07:4f:8b:1a:9b:94:68:14 oracle@node1
2）配置信任关系
[oracle@node1 ~]$ ls .ssh
id_dsa  id_dsa.pub  id_rsa  id_rsa.pub  known_hosts
[oracle@node1 ~]$ cat .ssh/id_rsa.pub >>.ssh/authorized_keys
[oracle@node1 ~]$ cat .ssh/id_dsa.pub >>.ssh/authorized_keys
[oracle@node1 ~]$ ssh node2 cat .ssh/id_rsa.pub >>.ssh/authorized_keys
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
oracle@node2's password:
authorized_keys                             100% 1992     2.0KB/s   00:00
3）验证信任关系  （all nodes）
[oracle@node1 ~]$ ssh node2 date
Thu May  2 14:46:30 CST 2013
[oracle@node1 ~]$ ssh node2-priv date
The authenticity of host 'node2-priv (10.10.10.2)' can't be established.
RSA key fingerprint is 16:28:88:50:27:30:92:cb:49:be:55:61:f6:c2:a1:3f.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added 'node2-priv,10.10.10.2' (RSA) to the list of known hosts.
Thu May  2 14:47:03 CST 2013
[oracle@node1 ~]$ ssh node1 date
Thu May  2 14:48:19 CST 2013
[oracle@node1 ~]$ ssh node1-priv date
The authenticity of host 'node1-priv (10.10.10.1)' can't be established.
RSA key fingerprint is 39:04:88:3b:54:34:3c:34:d2:df:74:37:fe:5f:92:2d.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added 'node1-priv,10.10.10.1' (RSA) to the list of known hosts.
Thu May  2 14:48:35 CST 2013
=========grid===========
步骤同oracle 一样
@至此，GI安装之前的准备工作基本完成。