Add azuremonitormetrics toolset & azuremonitorlogs toolset (both toolsets for CLI only)

[vishiy]

• Add azure monitor metrics toolset for CLI
• Add azuremonitor logs toolset for CLI - Note : I have disabled azuremonitorlogs toolset for now, as it requires AzureMCP (which has removed SSE based activations from last release) where as HOlmes support only SSE . Once Holmes supports stdout, i will enable azuremonitor logs toolset in CLI by default.
• Also added azuremonitoraerts for investigate flows to investigate metric based alerts in azure monitor.
• All the tools use defaultcreds that requires login from az cli
• Added unit tests for azure monitor metrics & alerts (will add azuremonitorlogs tests in subsequent PRs when azuremonitorlogs get enabled)

[CLAassistant]

All committers have signed the CLA.

[coderabbitai[bot]]

Walkthrough

This update introduces comprehensive Azure Monitor integration for AKS clusters, adding new toolsets for Azure Monitor Metrics and Logs, complete with configuration, installation, and troubleshooting documentation. It implements new plugins for fetching and investigating Azure Monitor Prometheus metric alerts, extends the CLI with alert investigation commands, and provides diagnostic runbooks for systematic alert analysis. Extensive unit tests and documentation support these additions, alongside dependency updates and configuration examples.

Changes

Cohort / File(s)	Change Summary
Azure Monitor Metrics Toolset Implementation holmes/plugins/toolsets/azuremonitor_metrics/azuremonitor_metrics_toolset.py, holmes/plugins/toolsets/azuremonitor_metrics/utils.py, holmes/plugins/toolsets/azuremonitor_metrics/azuremonitor_metrics_instructions.jinja2, holmes/plugins/toolsets/azuremonitor_metrics/install.md, holmes/plugins/toolsets/azuremonitor_metrics/__init__.py	Implements Azure Monitor Metrics toolset for querying managed Prometheus metrics on AKS clusters, including configuration, installation guide, utility functions for cluster/resource detection, LLM instructions, and module docstring.
Azure Monitor Logs Toolset Implementation holmes/plugins/toolsets/azuremonitorlogs/azuremonitorlogs_toolset.py, holmes/plugins/toolsets/azuremonitorlogs/utils.py, holmes/plugins/toolsets/azuremonitorlogs/azuremonitorlogs_instructions.jinja2, holmes/plugins/toolsets/azuremonitorlogs/install.md, holmes/plugins/toolsets/azuremonitorlogs/__init__.py	Adds Azure Monitor Logs toolset for AKS Container Insights detection and Log Analytics workspace integration, with configuration, installation, utilities for cluster/workspace detection, and instruction documentation.
Azure Monitor Alerts Source Plugin holmes/plugins/sources/azuremonitoralerts/__init__.py	Implements a new source plugin to fetch and process Azure Monitor Prometheus metric alerts for AKS clusters, converting them into Holmes issues with detailed query and description extraction.
Runbooks for Azure Monitor & Kubernetes Troubleshooting holmes/plugins/runbooks/azuremonitor-alerts.yaml, holmes/plugins/runbooks/azure_monitor_logs_cost_optimization.md, holmes/plugins/runbooks/catalog.json, holmes/plugins/runbooks/networking/dns_troubleshooting_prometheus_instructions.md, holmes/plugins/runbooks/node_troubleshooting_prometheus_instructions.md, holmes/plugins/runbooks/pod_troubleshooting_prometheus_instructions.md, examples/azuremonitor_runbooks.yaml	Adds YAML and Markdown runbooks for Azure Monitor alert diagnostics, cost optimization, and Kubernetes troubleshooting (DNS, node, pod issues), and updates the runbooks catalog.
Documentation and Guides AZURE_MONITOR_SETUP_GUIDE.md, docs/toolsets/azuremonitor-metrics.md, docs/toolsets/azuremonitor-logs.md, README.md, config.example.yaml	Introduces setup, usage, and troubleshooting guides for Azure Monitor toolsets, updates README with new integrations, and extends configuration examples.
Toolset and Core Integration holmes/plugins/toolsets/__init__.py, holmes/core/toolset_manager.py	Integrates new toolsets with conditional imports, availability checks, and special enable/disable logic for default toolsets.
CLI and Investigation Enhancements holmes/main.py, holmes/core/tool_calling_llm.py, holmes/core/runbooks.py	Adds CLI command for Azure Monitor Prometheus alert investigation, improves runbook display in investigations, and introduces a method to retrieve matched runbooks with metadata.
Dependency Updates pyproject.toml	Adds azure-mgmt-resourcegraph dependency and updates azure-mgmt-resource version.
Azure Monitor Metrics Toolset Tests tests/plugins/toolsets/azuremonitor_metrics/test_azuremonitor_metrics_tools.py, tests/plugins/toolsets/azuremonitor_metrics/README.md	Adds comprehensive unit tests and documentation for the Azure Monitor Metrics toolset, covering all tools, success/failure cases, and mocking strategies.

Sequence Diagram(s)

sequenceDiagram
    participant User
    participant CLI (holmes/main.py)
    participant AzureMonitorAlertsSource
    participant Azure API
    participant Investigator
    participant RunbookManager

    User->>CLI (holmes/main.py): Run `azuremonitormetrics --alertid=...`
    CLI (holmes/main.py)->>AzureMonitorAlertsSource: fetch_issue(alertid)
    AzureMonitorAlertsSource->>Azure API: Query Alert Management API
    Azure API-->>AzureMonitorAlertsSource: Return alert details
    AzureMonitorAlertsSource-->>CLI (holmes/main.py): Return Issue object
    CLI (holmes/main.py)->>Investigator: investigate(issue)
    Investigator->>RunbookManager: get_matched_runbooks_for_issue(issue)
    RunbookManager-->>Investigator: Return matched runbooks
    Investigator-->>CLI (holmes/main.py): Investigation result
    CLI (holmes/main.py)-->>User: Display analysis and runbook info

sequenceDiagram
    participant HolmesGPT
    participant AzureMonitorMetricsToolset
    participant Azure API
    participant AKS Cluster

    HolmesGPT->>AzureMonitorMetricsToolset: Execute PromQL query
    AzureMonitorMetricsToolset->>Azure API: Authenticate (Azure CLI/Managed Identity)
    AzureMonitorMetricsToolset->>AKS Cluster: Detect cluster resource ID
    AzureMonitorMetricsToolset->>Azure API: Query Prometheus endpoint
    Azure API-->>AzureMonitorMetricsToolset: Return metrics/alerts
    AzureMonitorMetricsToolset-->>HolmesGPT: Return results

Estimated code review effort

🎯 5 (Critical) | ⏱️ ~70 minutes

Suggested reviewers

• arikalon1

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[vishiy]

@austonli @aritraghosh @pavneeta