I was able to change the IP of the Cent OS. It seems there are centOS usernames and Splunk usernames. I was able to change the root password for cent from the command prompt using passwd and following the prompts. I can then change the splunkadmin password same way. Using the command in the documentation I could change the admin password for splunk.. All that being said I still can not connect to the app and it seems that there may be another place the network settings may need to be changed. Documnetation is not very clear.
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