I have been working on a web application for about a month now that uses ElasticSearch. I'm now starting to get issues with connecting to a ES node (my knowledge around ES is not great so forgive me if the terminology is wrong)
An error message I get is: failed to send ping to [[#zen_unicast_4#][inet[/xxx.xx.xxx.xxx:9301]]]
I then get a MasterNotDiscoveredException and the entire thing breaks down and doesn't let me connect to the ES server.
Could anyone please guide me on what could be wrong?
Many thanks.