dt-obs-hosts

# Infrastructure Hosts Skill Monitor and manage host and process infrastructure including CPU, memory, disk, network, and technology inventory. ## When to Use This Skill Use this skill when the user needs to: - **Inventory:** "Show me all Linux hosts in AWS us-east-1" - **Monitor:** "What hosts have high CPU usage?" - **Troubleshoot:** "Which processes are consuming the most memory?" - **Discover:** "What databases are running in production?" - **Plan:** "Track Kubernetes version distribution for upgrade planning" - **Cost:** "Calculate infrastructure costs by cost center" - **Security:** "Find all processes listening on port 22" - **Compliance:** "Identify hosts running EOL Java versions" - **Quality:** "Check data completeness for AWS hosts" - **Optimize:** "Find rightsizing candidates based on utilization" --- > **Cross-source join required:** If the query must combine host data with logs or other > telemetry sources (e.g. "show logs from Linux hosts with their IP addresses") → also read > `dt-dql-essentials/references/smartscape-topology-navigation.md` before writing the query. --- ## Core Concepts ### Entities - **HOST** - Physical or virtual machines (cloud or on-premise) - **PROCESS** - Running processes and process groups - **CONTAINER** - Kubernetes containers - **NETWORK_INTERFACE** - Host network interfaces - **DISK** - Host disk volumes ### Metrics Categories 1. **Host Metrics** - `dt.host.cpu.*`, `dt.host.memory.*`, `dt.host.disk.*`, `dt.host.net.*` 2. **...