After I deleted the index pattern from kibana, a new index came up in my elastic search when I ran, curl -XGET localhost:9200/_cat/indices
yellow open %{[@metadata][beat]}-2016.12.21 GqdmtZmhS4mZ5zyfTCNH2g 5 1 183613 0 67.9mb 67.9mb
I can't seem to delete this index since there's curly brackets in the name of the index.
UPDATE: Managed to delete the index with curl -XDELETE localhost:9200/*metadata* but, I'm still getting blank pages on Kibana. The pages I get blank are, Discover, Visualize, Dashboard, Dev Tools, Management.
UPDATE 2: Deleting packetbeat-* and *metadata* using curl didn't fix the issue, but running curl -XDELETE localhost:9200/_all fixed the blank screens. Will be trying to get data back in again.