Trying to change filebeat index

Apologies, not sure what's going on. I'm not getting the full thread until I reply... 7.17.

Try adding

setup.ilm.enabled: false

I think I went through a couple different methods of this and why the certain settings work here

so I think you need

setup.ilm.enabled: false
setup.template:
    enabled: true
    name: "suricata"
    pattern: "suricata-*"