(x86_64) expat-1.95.7 (x86_64) passed
node1 expat-1.95.8-8.3.el5_5.3 (x86_64) expat-1.95.7 (x86_64) passed
Result: Package existence check passed for "expat-1.95.7 (x86_64)"
Checking for multiple users with UID value 0
Result: Check for multiple users with UID value 0 passed
Check: Current group ID
Result: Current group ID check passed
Checking Core file name pattern consistency...
Core file name pattern consistency check passed.
Checking to make sure user "grid" is not in "root" group
Node Name Status Comment
------------ ------------------------ ------------------------
node2 does not exist passed
node1 does not exist passed
Result: User "grid" is not part of "root" group. Check passed
Check default user file creation mask
Node Name Available Required Comment
------------ ------------------------ ------------------------ ----------
node2 0022 0022 passed
node1 0022 0022 passed
Result: Default user file creation mask check passed
Starting Clock synchronization checks using Network Time Protocol(NTP)...
NTP Configuration file check started...
Network Time Protocol(NTP) configuration file not found on any of the nodes. Oracle Cluster Time Synchronization Service(CTSS) can be used instead of NTP for time synchronization on the cluster nodes
Result: Clock synchronization check using Network Time Protocol(NTP) passed
Pre-check for cluster services setup was successful.
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小结
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其实这次错误非常低级，于是借此机会想了下无法安装包可能出现的几种情况：
1、rpm安装时缺少依赖关系；
2、安装包版本不对；
3、yum路径配置不正确；
4、yum配置的路径没有mount上光盘信息；
5、使用yum时注意包名的书写格式：例如：# yum install libaio* -y。
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