[INS-30132] Initial setup required for the execution of installer validations failed on nodes: racflex2
Solution: Setup passwordless ssh or ssh equivalency on all the RAC nodes and give permissions to oracle user and oinstall group.Give rwx permissions to /tmp directory.
Refer this post for setting up user equivalence https://wordpress.com/block-editor/post/alphaoragroup.com/90
[root@RACFLEX2 /]# chmod -R 777 /tmp/
[root@RACFLEX2 /]# su - oracle
[oracle@RACFLEX2 ~]$
[oracle@RACFLEX2 ~]$
[oracle@RACFLEX2 ~]$ cd /
[oracle@RACFLEX2 /]$ ls -lrt /tmp/
total 32
drwxrwxrwx 3 501 oinstall 4096 Oct 13 13:36 OraInstall2020-10-13_01-15-27PM
drwxrwxrwx 3 501 oinstall 4096 Oct 13 15:40 OraInstall2020-10-13_03-36-40PM
drwxrwxrwx 3 501 oinstall 4096 Oct 13 17:45 OraInstall2020-10-13_05-42-34PM
drwxrwxrwx 3 501 oinstall 4096 Oct 13 21:43 OraInstall2020-10-13_09-41-04PM
drwxr-xr-x 3 oracle oinstall 4096 Oct 14 14:46 CVU_12.1.0.2.0_oracle
drwxr-xr-x 3 oracle oinstall 4096 Oct 14 14:46 OraInstall2020-10-14_01-46-46PM
Once we grant permission,we can solve this error during grid installation!!