Ranger node should be capable of taking workload. Let me repeat this ranger node has to be resource full. Ranger means audit. “Security Administrator” is a business function where as “Hadoop Administrator’ is a technical role.
Node High availability requires minimum number of host to be commissioned in a cluster. Another significant pre requisite is with respect to ‘ZK’ service enabled on host. Node high availability activity involves some manual steps to be performed.
How to do – Hadoop local bits setup for hadoop core components and service? addressing the challenge to plant enterprise class software through internet. As a best practice it is advisable to have local bits ready for software install. Local bits on any server help you to go,,,,,
Commissioning a new Node or set of node are planned in advance to ensure cluster availability. It’s recommended to have some extra resources available. Majority of the time job troubleshooting is not in scope of admin team. Hot fix, trouble shoot, bug fix, change, enhancement, development need to be scoped carefully.