Rewrite Get Started for Infra #2414
Description
Write a new Get Started for Infrastructure and Hosts. Reconsider content in https://www.elastic.co/docs/solutions/observability/infra-and-hosts/get-started-with-system-metrics
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Write a new Get Started for Infrastructure and Hosts. Reconsider content in https://www.elastic.co/docs/solutions/observability/infra-and-hosts/get-started-with-system-metrics