Did anything go wrong during the installation? I'd give reinstalling a try and if there's any suspicious logs we can dig in. Alternatively if you just need to get things working, manually creating the kibana user and group and and chown -R kibana:kibana /usr/share/kibana and /var/log/kibana should help.
I did not see any errors during the installation. What is the best way to clean uninstall and install? I tried rpm -e <file.rpm>, but it says it's not installed.
[lnx]~/workspace/elk% sudo rpm -e kibana-6.3.0-x86_64.rpm
error: package kibana-6.3.0-x86_64.rpm is not installed
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