Azure Infrastructure

Authentication

IMPORTANT: Credentials are injected automatically by a proxy layer. Do NOT check for AZURE_CLIENT_SECRET or AZURE_TENANT_ID in environment variables - they won't be visible to you. Just run the scripts directly; authentication is handled transparently.

Configuration environment variables you CAN check (non-secret):

• AZURE_SUBSCRIPTION_ID

• Azure subscription ID

• AZURE_RESOURCE_GROUP

• Default resource group

MANDATORY: Query-First Investigation

Start with Log Analytics or Monitor metrics, then drill into resources.

LOG ANALYTICS / METRICS → IDENTIFY RESOURCE → DESCRIBE RESOURCE → CHECK ALERTS

Available Scripts

All scripts are in .claude/skills/infrastructure-azure/scripts/

query_log_analytics.py - KQL Log Queries (START HERE for log investigation)

python .claude/skills/infrastructure-azure/scripts/query_log_analytics.py --workspace-id WORKSPACE_ID --query "AzureDiagnostics | where Level == 'Error' | limit 50" python .claude/skills/infrastructure-azure/scripts/query_log_analytics.py --workspace-id WORKSPACE_ID --query "Heartbeat | summarize count() by Computer" --timespan PT1H

query_resource_graph.py - Cross-Subscription Resource Queries

python .claude/skills/infrastructure-azure/scripts/query_resource_graph.py --query "Resources | where type == 'microsoft.compute/virtualmachines' | project name, location"

get_monitor_metrics.py - Azure Monitor Metrics

python .claude/skills/infrastructure-azure/scripts/get_monitor_metrics.py --resource-id RESOURCE_ID --metrics "Percentage CPU,Network In" --interval PT5M

list_monitor_alerts.py - Alert Rules

python .claude/skills/infrastructure-azure/scripts/list_monitor_alerts.py [--resource-group RG]

list_vms.py / describe_vm.py - Virtual Machines

python .claude/skills/infrastructure-azure/scripts/list_vms.py [--resource-group RG] python .claude/skills/infrastructure-azure/scripts/describe_vm.py --resource-group RG --vm-name VM

list_aks_clusters.py / describe_aks_cluster.py - AKS Clusters

python .claude/skills/infrastructure-azure/scripts/list_aks_clusters.py [--resource-group RG] python .claude/skills/infrastructure-azure/scripts/describe_aks_cluster.py --resource-group RG --cluster-name CLUSTER

query_costs.py - Cost Management

python .claude/skills/infrastructure-azure/scripts/query_costs.py --start 2026-01-01 --end 2026-02-01 [--granularity Monthly] [--group-by ResourceGroup,ServiceName]

get_nsg_rules.py - Network Security Group Rules

python .claude/skills/infrastructure-azure/scripts/get_nsg_rules.py --resource-group RG --nsg-name NSG

KQL Query Reference

// Errors in last hour AzureDiagnostics | where Level == "Error" | where TimeGenerated > ago(1h) | limit 50

// CPU usage Perf | where CounterName == "% Processor Time" | summarize avg(CounterValue) by bin(TimeGenerated, 5m), Computer

// Heartbeat (availability) Heartbeat | summarize count() by Computer, bin(TimeGenerated, 1h)

// Resource Graph - find VMs Resources | where type == "microsoft.compute/virtualmachines" | project name, location, properties.hardwareProfile.vmSize

Investigation Workflow

VM Performance Issue

1. get_monitor_metrics.py --resource-id <vm-id> --metrics "Percentage CPU,Network In"
2. query_log_analytics.py --query "Perf | where Computer == '<vm>' | where CounterName == '% Processor Time'"
3. describe_vm.py --resource-group <rg> --vm-name <vm>

Cost Spike

1. query_costs.py --start <start> --end <end> --group-by ResourceGroup,ServiceName
2. query_resource_graph.py --query "Resources | summarize count() by type, location"