Error while installing Data Services

[#1]

We have Cloudera Private Cloud 7.1.9

When trying to install Data Services, we get this error:

    "unable to resolve either the CM url, CDP console, or localhost"

We verified DNS settings and the hostname is resolved correctly. 

What can the issue be? where can we find logs with additional details?

[#2]

this is how the hosts file looks:
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6

[#3]

Can you please fix the localhost thing

nslookup localhost should resolve

[#4]

we have passed  all pre-requisistes, still facint the same issue

[#5]

Hello @Rafiy 

Can you please which issue are you facing now?

Same one 

    "unable to resolve either the CM url, CDP console, or localhost"

[#6]

Hello @shaihavivqlik 

Can you also verify if the wildcard dns is set up correctly 

*.apps.myhostname.com

https://docs.cloudera.com/cdp-private-cloud-data-services/1.5.4/installation-ecs/topics/cdppvc-insta...

I faced the same error as you this time, and I had the above mentioned problem so please double check this as well