I created a csv file that has two columns, name and ip. I've uploaded the csv and I want to use the name column as list of host to search instead of doing a long list of host in the search and that way I can just update the csv to update all of my searches.
when I run something like:
index=web | lookup computers.csv name AS host
I get a ton of results from host that are not in the csv.
The lookup command just enriches the existing data (adds column from lookup based on matched fields) and doesn't do any filter. You'd need to use that lookup table as subsearch filter as well to get data for only matched hosts
index=web [| inputlookup computers.csv | table name | rename name as host ] | ...rest of the search
index=web | lookup computers.csv name AS lkhost | where host==lkhost
You can use subsearches but they have a lot of caviat
index=web NOT [| inputlookup computers.csv | table name | rename name as host ]