Is there a way to disable Marvel plugin index but keep its report for monitoring? Thanks.
plugin:marvel Marvel index ready seems to be too much resource occupied sometimes.
No you can't, it's either enabled or not.
The marvel plugin needs to be installed on each elastic node you want to report on. However you can have the marvel index and processing be stored in a different cluster from the node that is being monitored.
e.g. add something like this to your elasticsearch.yml file:
marvel.agent.exporter.es.hosts: ["monitoring-node"]
In version 2.0 the dashboard is actually supplied by a separate kibana installation, and the marvel dashboard is a plugin for that. The elastic plugin is simply the agent part (called marvel-agent now) and I assume much smaller.