Getting Data In

Filtering search results with mvfilter

CaninChristellC
Explorer

I'm creating a dashboard that displays events relating to servers ("host" field in the search). I want to allow the user to specify the hosts to include via a checkbox dashboard input, however I cannot get this to work.

To simplify the development process, I've mocked up the input into a search as so:

eventtype=SomeEventType | eval servers="serverName01;serverName02;serverName03" | makemv delim=";" servers | search mvfilter(host,servers)

(In the dashboard I obviously don't need to "eval servers=" and the "servers" is referenced $servers$, again I only changed this so I could play around with it in the raw search app)

...With my understanding is that it should filter the search results based on those that return "true." The search doesn't error out, but I get no results. However, with the search instead as simply:

eventtype=SomeEventType host="serverName01"

I do get results back.

How do I filter the results, correctly?

0 Karma

knielsen
Contributor

Hi,

You are not even using the mvfilter function, you are searching for it as a string.

What is the goal, do you want to filter for events that have the host in the list of servers, or do you want to change the servers list somehow?

If it is the former question, then you could use the mvfind command, eg:

| makeresults 
| eval host="serverName02", servers="serverName01;serverName02;serverName03" 
| makemv delim=";" servers 
| where isnotnull(mvfind(servers,host))

Is that what you were looking for?

Hth,
Kai.

0 Karma
Get Updates on the Splunk Community!

Splunk Mobile: Your Brand-New Home Screen

Meet Your New Mobile Hub  Hello Splunk Community!  Staying connected to your data—no matter where you are—is ...

Introducing Value Insights (Beta): Understand the Business Impact your organization ...

Real progress on your strategic priorities starts with knowing the business outcomes your teams are delivering ...

Enterprise Security (ES) Essentials 8.3 is Now GA — Smarter Detections, Faster ...

As of today, Enterprise Security (ES) Essentials 8.3 is now generally available, helping SOC teams simplify ...