Since your system is fresh, I recommend deleting the VM that is broken and re-deploying the template once more - that is likely the fastest path to resolution.
Based on the output you've displayed it looks like you have 0 indices in your system, which is an indication that the installation was improper. Try downloading the OVF template using this link: https://assets.nagios.com/downloads/nag ... 2.1-64.ova
Deploy the above, and let me know if you're still having trouble.
TwitsBlog Show me a man who lives alone and has a perpetually clean kitchen, and 8 times out of 9 I'll show you a man with detestable spiritual qualities.