Prvf-7593:crs is isn't found to being installed on node "RAC2"

An error was reported during node information update:
[[email protected] bin] $ ./runInstaller -updateNodeList ORACLE_HOME = / u01 / app / 11.2.0.1 / grid / "CLUSTER_NODES = {rac2}" CRS = TRUE -silent
Starting Oracle Universal Installer ...

Checking swap space: must be greater than 500 MB. Actual 1858 MB Passed
The inventory pointer is located at /etc/oraInst.loc
The inventory is located at / u01 / app / oraInventory
The Oracle home '/u01/app/11.2.0.1/grid/' could not be updated as it does not exist.
'UpdateNodeList' failed.


[[email protected] ~] $ echo $ ORACLE_HOME
/u01/app/11.2.0.1/grid
[[email protected] ~] $ cd /u01/app/11.2.0.1/grid
[[email protected] grid] $ pwd
/u01/app/11.2.0.1/grid
[[email protected] grid] $

And this ORACLE_HOME exists.

Because the reason could not be found, proceed to the next step to check the Add node:

cluvfy stage -pre nodeadd -n rac1 -verbose

The result is wrong:
ERROR:
PRVF-7593: CRS is not found to be installed on node "rac2"
Verification cannot proceed

But check:
Cluster status:
[[email protected] grid] $ crsctl status res -t
-------------------------------------------------- ------------------------------
NAME TARGET STATE SERVER STATE_DETAILS
-------------------------------------------------- ------------------------------
Local Resources
-------------------------------------------------- ------------------------------
ora.DATA.dg
               ONLINE ONLINE rac2
ora.FRA.dg
               ONLINE ONLINE rac2
ora.LISTENER.lsnr
               ONLINE ONLINE rac2
ora.OCR.dg
               ONLINE ONLINE rac2
ora.asm
               ONLINE ONLINE rac2 Started
ora.gsd
               OFFLINE OFFLINE rac2
ora.net1.network
               ONLINE ONLINE rac2
ora.ons
               ONLINE ONLINE rac2
ora.registry.acfs
               ONLINE ONLINE rac2
-------------------------------------------------- ------------------------------
Cluster Resources
-------------------------------------------------- ------------------------------
ora.LISTENER_SCAN1.lsnr
      1 ONLINE ONLINE rac2
ora.cvu
      1 ONLINE ONLINE rac2
ora.lmorcl.db
      2 ONLINE ONLINE rac2 Open
ora.oc4j
      1 ONLINE ONLINE rac2
ora.rac2.vip
      1 ONLINE ONLINE rac2
ora.scan1.vip
      1 ONLINE ONLINE rac2


Clusterware status:
[[email protected] grid] $ crsctl check crs
CRS-4638: Oracle High Availability Services is online
CRS-4537: Cluster Ready Services is online
CRS-4529: Cluster Synchronization Services is online
CRS-4533: Event Manager is online

Explanation of error message:
<dl> <dt> <span class = "msg"> PRVF-07593: CRS is not found to be installed on node "{0}" </ span> </ dt> <dd> <div class = "msgexplan" > <span class = "msgexplankw"> Cause: </ span> Could not identify CRS installation on the specified node. </ div> </ dd> <dd> <div class = "msgaction"> <span class = "msgactionkw "> Action: </ span> Ensure that CRS is installed on the specified node. </ Div> </ dd> </ dl> 

Prvf-7593:crs is isn't found to being installed on node "RAC2"