Oracle11gRAC需要删除故障的节点，grid不能更新nodelist，报不存在oracle_home路径，实际是存在的？

1. Oracle11g RAC 两个节点，由于现场误删除了第一个节点的oracle 账号，及相应的文件
2. 计划删除有问题的故障节点，重新添加
3. 在有故障节点的第一个节点上 grid 更新nodelist 命令时报错：
   $ORACLE_HOME/oui/bin/runInstaller -updateNodeList ORACLE_HOME=$ORACLE_HOME "CLUSTER_NODES={rac01}" CRS=TRUE -silent -local
Starting Oracle Universal Installer...

Checking swap space: must be greater than 500 MB.   Actual 31999 MB    Passed
The inventory pointer is located at /etc/oraInst.loc
The inventory is located at /u01/app/oraInventory
The Oracle home '/u01/app/11.2.0/grid' could not be updated as it does not exist.
'UpdateNodeList' failed.
4. 核查Oracle_home 路径是存在的：
 echo $ORACLE_HOME
/u01/app/11.2.0/grid