centos 5 _x86_64
oracle 11.2
安装grid之前检查配置 ，报错如下 ：
./runcluvfy.sh stage -pre crsinst -n rac1,rac2 -fixup -verbose
Performing pre-checks for cluster services setup
Checking node reachability...
Check: Node reachability from node "rac1"
Destination Node Reachable?
------------------------------------ ------------------------
rac2 yes
rac1 yes
Result: Node reachability check passed from node "rac1"
Checking user equivalence...
Check: User equivalence for user "grid"
Node Name Comment
------------------------------------ ------------------------
rac2 failed
rac1 failed
Result: PRVF-4007 : User equivalence check failed for user "grid"
ERROR:
User equivalence unavailable on all the specified nodes
Verification cannot proceed
Pre-check for cluster services setup was unsuccessful on all the nodes.
解决方法：
后来发现用ssh rac2 date的时候需要输入密码,于是手工建立SSH用户等效性配置:
rac1:
$ mkdir ~/.ssh
$ chmod 700 ~/.ssh
$ ssh-keygen -t rsa
$ ssh-keygen -t dsa
rac2:
$ mkdir ~/.ssh
$ chmod 700 ~/.ssh
$ ssh-keygen -t rsa
$ ssh-keygen -t dsa
rac1:
$ cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys
$ cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys
$ ssh rac2 cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys
$ ssh rac2 cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys
$ scp ~/.ssh/authorized_keys rac2:~/.ssh/authorized_keys