When are you getting this error? Is it at time on installation of Ranger KMS?
If so can you check if the Ranger service is up? ALso while configuring Ranger KMS can you make sure you have property.
Also pls check if this link can help - https://community.hortonworks.com/questions/15349/how-to-remove-ranger-kms-from-the-cluster.html
@Sagar Shimpi Ranger is started and without any warnings or errors. Ranger KMS seems to be installed because the only thing it does let me to do is Start or Stop. What do you mean by configuring Ranger KMS? I think I configured it properly but I dont know where the error is.
Can you please check the below property values -
-- 'ranger.externalurl' in 'ranger-admin-site.xml'
-- 'ranger.service.host' in 'ranger-kms-site.xml'
==>>> The value of
'ranger.externalurl' needs to include 'http://'. For example, 'http://ranger.admin.url:6080'.
While the value of 'ranger.service.host' needs to exclude 'http://'. For example, 'ranger.admin.url:6080'.