Deploy independent Stream forwarder error

[AlmahAK]

Hello everyone, 

I try to follow this manual the https://docs.splunk.com/Documentation/StreamApp/7.2.0/DeployStreamApp/InstallStreamForwarderonindepe... 

I face an issue below, once I try to ssh and run the command on my linux vm. 

[PickleRick]

You don't have your DNS properly configured so your computer doesn't know where the host named "splunk" is.

[AlmahAK]

How we can configure the DNS ? 

[PickleRick]

It's something your IT department should take care of. Basics of networking and general sysadmin work are way out of scope of this forum.