Before You Begin

Perform the following initial checks before starting your installation:

Login as user ranger.
If user ranger is not found, create it using the useradd command, for example, su -ranger.
Use the kinit command to check for HTTP principal:
```
kinit -kt <HTTP keytab path> HTTP/<FQDN_OF_Ranger_Admin_Cluster>@<REALM>
```
After running the kinit command, there should not be any errors. You can use the klist command to verify that your kinit command was successful.
Use the kdestroy command to destroy your active Kerberos authorization tickets by overwriting and deleting the credentials cache that contains them:
```
kdestroy
```