Azure Data Explorer Skill

This skill provides expert guidance for Azure Data Explorer. Covers troubleshooting, best practices, decision making, architecture & design patterns, limits & quotas, security, configuration, integrations & coding patterns, and deployment. It combines local quick-reference content with remote documentation fetching capabilities.

How to Use This Skill

> IMPORTANT for Agent: Use the Category Index below to locate relevant sections. For categories with line ranges (e.g., L35-L120), use read_file with the specified lines. For categories with file links (e.g., [security.md](security.md)), use read_file on the linked reference file

> IMPORTANT for Agent: If metadata.generated_at is more than 3 months old, suggest the user pull the latest version from the repository. If mcp_microsoftdocs tools are not available, suggest the user install it: Installation Guide

This skill requires network access to fetch documentation content:

• Preferred: Use mcp_microsoftdocs:microsoft_docs_fetch with query string from=learn-agent-skill. Returns Markdown.
• Fallback: Use fetch_webpage with query string from=learn-agent-skill&accept=text/markdown. Returns Markdown.

Category Index

| Category | Lines | Description | |----------|-------|-------------| | Troubleshooting | L37-L49 | Diagnosing and fixing ADX cluster health, creation, connection, private endpoint, ingestion, and DB/table operation errors, including interpreting ingestion error codes and using Resource Health. | | Best Practices | L50-L61 | Guidance on optimizing ADX clusters and schemas, handling duplicates and JSON ingestion, tuning for high concurrency, monitoring queued ingestion, using hot windows, and applying Power BI best practices. | | Decision Making | L62-L76 | Guidance on ADX capacity planning, SKU and compute choices, scaling, cost optimization, reservations, business continuity, confidential compute, streaming ingestion, and Elasticsearch migration. | | Architecture & Design Patterns | L77-L83 | Designing ADX architectures for DR/BCP, cross-cluster access via follower DBs, and multitenant patterns (isolation, scaling, and resource sharing). | | Limits & Quotas | L84-L93 | Cluster limits and behaviors: free cluster quotas, auto-stop, safe delete/recover, ingestion file size and invalid data handling, and supported data/compression formats. | | Security | L94-L121 | Securing Azure Data Explorer: authn/z (RBAC, principals, Entra apps, Conditional Access), encryption, managed identities, network isolation, policies, data purging, and outbound/public access control. | | Configuration | L122-L136 | Configuring ADX environments: database/table policies, retention/cache, cross-tenant Event Hubs, Kusto emulator, plugins, monitoring, schema sync, T-SQL, and web UI settings/shortcuts. | | Integrations & Coding Patterns | L137-L171 | Integrating Azure Data Explorer with tools and platforms (SQL, ODBC/JDBC, Power Automate/Apps, Functions, Grafana, Splunk, OpenTelemetry, etc.) and coding patterns for querying, ingestion, and automation. | | Deployment | L172-L178 | Automating ADX cluster provisioning and schema deployment, plus guidance for migrating clusters to availability zones and from VNet injection to private endpoints. |

Troubleshooting

| Topic | URL | |-------|-----| | Monitor and troubleshoot Azure Data Explorer cluster health | https://learn.microsoft.com/en-us/azure/data-explorer/check-cluster-health | | Diagnose and fix Azure Data Explorer dashboard tile errors | https://learn.microsoft.com/en-us/azure/data-explorer/dashboard-troubleshoot-tile-errors | | Interpret ADX ingestion error codes and failures | https://learn.microsoft.com/en-us/azure/data-explorer/error-codes | | Resolve common Azure Data Explorer ingestion issues | https://learn.microsoft.com/en-us/azure/data-explorer/ingestion-faq | | Use Resource Health to diagnose ADX issues | https://learn.microsoft.com/en-us/azure/data-explorer/monitor-with-resource-health | | Troubleshoot Azure Data Explorer private endpoint issues | https://learn.microsoft.com/en-us/azure/data-explorer/security-network-private-endpoint-troubleshoot | | Fix Azure Data Explorer cluster connection issues | https://learn.microsoft.com/en-us/azure/data-explorer/troubleshoot-connect-cluster | | Troubleshoot Azure Data Explorer cluster creation failures | https://learn.microsoft.com/en-us/azure/data-explorer/troubleshoot-create-cluster | | Resolve Azure Data Explorer DB and table operation failures | https://learn.microsoft.com/en-us/azure/data-explorer/troubleshoot-database-table |

Best Practices

| Topic | URL | |-------|-----| | Apply Azure Advisor recommendations to optimize Data Explorer clusters | https://learn.microsoft.com/en-us/azure/data-explorer/azure-advisor | | Handle duplicate data in Azure Data Explorer | https://learn.microsoft.com/en-us/azure/data-explorer/dealing-with-duplicates | | Optimize Azure Data Explorer clusters for high-concurrency workloads | https://learn.microsoft.com/en-us/azure/data-explorer/high-concurrency | | Use hot windows to efficiently query cold data in Azure Data Explorer | https://learn.microsoft.com/en-us/azure/data-explorer/hot-windows | | Ingest JSON into Azure Data Explorer with KQL, C#, and Python | https://learn.microsoft.com/en-us/azure/data-explorer/ingest-json-formats | | Monitor queued ingestion metrics in ADX | https://learn.microsoft.com/en-us/azure/data-explorer/monitor-queued-ingestion | | Apply Power BI best practices for Azure Data Explorer | https://learn.microsoft.com/en-us/azure/data-explorer/power-bi-best-practices | | Optimize Azure Data Explorer table schema design | https://learn.microsoft.com/en-us/azure/data-explorer/schema-best-practice |

Decision Making

| Topic | URL | |-------|-----| | Choose Azure Data Explorer business continuity options | https://learn.microsoft.com/en-us/azure/data-explorer/business-continuity-overview | | Deploy Azure Data Explorer with confidential compute | https://learn.microsoft.com/en-us/azure/data-explorer/confidential-compute | | Decide when to use streaming ingestion in Azure Data Explorer | https://learn.microsoft.com/en-us/azure/data-explorer/ingest-data-streaming | | Select isolated compute SKUs for Data Explorer clusters | https://learn.microsoft.com/en-us/azure/data-explorer/isolated-compute | | Choose optimal Azure Data Explorer compute SKU | https://learn.microsoft.com/en-us/azure/data-explorer/manage-cluster-choose-sku | | Plan vertical scaling and SKU changes for clusters | https://learn.microsoft.com/en-us/azure/data-explorer/manage-cluster-vertical-scaling | | Migrate Elasticsearch workloads to Azure Data Explorer | https://learn.microsoft.com/en-us/azure/data-explorer/migrate-elasticsearch-to-azure-data-explorer | | Use ADX pricing calculator for cluster planning | https://learn.microsoft.com/en-us/azure/data-explorer/pricing-calculator | | Optimize ADX cost per GB ingested | https://learn.microsoft.com/en-us/azure/data-explorer/pricing-cost-drivers | | Understand ADX reservation discount application | https://learn.microsoft.com/en-us/azure/data-explorer/pricing-reservation-discount | | Choose and purchase Azure Data Explorer reserved capacity | https://learn.microsoft.com/en-us/azure/data-explorer/pricing-reserved-capacity |

Architecture & Design Patterns

| Topic | URL | |-------|-----| | Design Azure Data Explorer business continuity and DR | https://learn.microsoft.com/en-us/azure/data-explorer/business-continuity-create-solution | | Use follower databases for cross-cluster ADX access | https://learn.microsoft.com/en-us/azure/data-explorer/follower | | Choose multitenant architectures for Azure Data Explorer | https://learn.microsoft.com/en-us/azure/data-explorer/multi-tenant |

Limits & Quotas

| Topic | URL | |-------|-----| | Understand automatic stop behavior for inactive clusters | https://learn.microsoft.com/en-us/azure/data-explorer/auto-stop-clusters | | Apply Event Grid ingestion file size limits in Azure Data Explorer | https://learn.microsoft.com/en-us/azure/data-explorer/create-event-grid-connection | | Delete and recover Azure Data Explorer clusters safely | https://learn.microsoft.com/en-us/azure/data-explorer/delete-cluster | | Understand invalid data behavior during ADX ingestion | https://learn.microsoft.com/en-us/azure/data-explorer/ingest-invalid-data | | Supported data and compression formats for Azure Data Explorer ingestion | https://learn.microsoft.com/en-us/azure/data-explorer/ingestion-supported-formats | | Upgrade free Azure Data Explorer clusters and remove limits | https://learn.microsoft.com/en-us/azure/data-explorer/start-for-free-upgrade |

Security

| Topic | URL | |-------|-----| | Programmatically add Azure Data Explorer cluster principals | https://learn.microsoft.com/en-us/azure/data-explorer/add-cluster-principal | | Programmatically add Azure Data Explorer database principals | https://learn.microsoft.com/en-us/azure/data-explorer/add-database-principal | | Enable disk encryption for Azure Data Explorer clusters | https://learn.microsoft.com/en-us/azure/data-explorer/cluster-encryption-disk | | Configure encryption options for Azure Data Explorer clusters | https://learn.microsoft.com/en-us/azure/data-explorer/cluster-encryption-overview | | Configure managed identities on Azure Data Explorer clusters | https://learn.microsoft.com/en-us/azure/data-explorer/configure-managed-identities-cluster | | Configure cross-tenant access for Azure Data Explorer | https://learn.microsoft.com/en-us/azure/data-explorer/cross-tenant-query-and-commands | | Configure customer-managed keys for Azure Data Explorer | https://learn.microsoft.com/en-us/azure/data-explorer/customer-managed-keys | | Purge personal data from Azure Data Explorer | https://learn.microsoft.com/en-us/azure/data-explorer/data-purge-portal | | Authenticate Azure Data Explorer external tables with managed identities | https://learn.microsoft.com/en-us/azure/data-explorer/external-tables-managed-identities | | Ingest data using managed identity authentication | https://learn.microsoft.com/en-us/azure/data-explorer/ingest-data-managed-identity | | Configure and manage Azure Data Explorer cluster locks | https://learn.microsoft.com/en-us/azure/data-explorer/manage-cluster-locks | | Configure Azure Data Explorer cluster RBAC permissions | https://learn.microsoft.com/en-us/azure/data-explorer/manage-cluster-permissions | | Configure database RBAC permissions in Azure Data Explorer | https://learn.microsoft.com/en-us/azure/data-explorer/manage-database-permissions | | Use managed identities with Azure Data Explorer | https://learn.microsoft.com/en-us/azure/data-explorer/managed-identities-overview | | Apply built-in Azure Policy definitions to ADX | https://learn.microsoft.com/en-us/azure/data-explorer/policy-reference | | Securely connect private-endpoint clusters to Power BI | https://learn.microsoft.com/en-us/azure/data-explorer/power-bi-private-endpoint | | Create and authorize Microsoft Entra apps for Data Explorer | https://learn.microsoft.com/en-us/azure/data-explorer/provision-entra-id-app | | Configure Conditional Access for Azure Data Explorer | https://learn.microsoft.com/en-us/azure/data-explorer/security-conditional-access | | Apply Azure Policy compliance controls to Data Explorer | https://learn.microsoft.com/en-us/azure/data-explorer/security-controls-policy | | Configure managed private endpoints for Data Explorer | https://learn.microsoft.com/en-us/azure/data-explorer/security-network-managed-private-endpoint-create | | Plan network security for Azure Data Explorer clusters | https://learn.microsoft.com/en-us/azure/data-explorer/security-network-overview | | Secure Azure Data Explorer with private endpoints | https://learn.microsoft.com/en-us/azure/data-explorer/security-network-private-endpoint | | Restrict outbound access from Azure Data Explorer clusters | https://learn.microsoft.com/en-us/azure/data-explorer/security-network-restrict-outbound-access | | Control public network access to Data Explorer clusters | https://learn.microsoft.com/en-us/azure/data-explorer/security-network-restrict-public-access |

Configuration

| Topic | URL | |-------|-----| | Use KQL database scripts in ARM deployments | https://learn.microsoft.com/en-us/azure/data-explorer/database-script | | Programmatically create Azure Data Explorer database and table policies | https://learn.microsoft.com/en-us/azure/data-explorer/database-table-policies | | Create cross-tenant Event Hubs data connections for Azure Data Explorer | https://learn.microsoft.com/en-us/azure/data-explorer/ingest-data-cross-tenant | | Install and configure Azure Data Explorer Kusto emulator | https://learn.microsoft.com/en-us/azure/data-explorer/kusto-emulator-install | | Manage language extension plugins in Azure Data Explorer | https://learn.microsoft.com/en-us/azure/data-explorer/language-extensions | | Configure Azure Data Explorer monitoring reference settings | https://learn.microsoft.com/en-us/azure/data-explorer/monitor-data-explorer-reference | | Synchronize ADX schema with Sync Kusto tool | https://learn.microsoft.com/en-us/azure/data-explorer/sync-kusto | | Use T-SQL queries against Azure Data Explorer | https://learn.microsoft.com/en-us/azure/data-explorer/t-sql | | Configure Azure Data Explorer table retention and cache | https://learn.microsoft.com/en-us/azure/data-explorer/table-retention-policy-wizard | | Customize Azure Data Explorer web UI environment settings | https://learn.microsoft.com/en-us/azure/data-explorer/web-customize-settings | | Use Azure Data Explorer web UI query keyboard shortcuts | https://learn.microsoft.com/en-us/azure/data-explorer/web-ui-query-keyboard-shortcuts |

Integrations & Coding Patterns

| Topic | URL | |-------|-----| | Manage ADX with Azure PowerShell Kusto cmdlets | https://learn.microsoft.com/en-us/azure/data-explorer/azure-powershell | | Clone Azure Data Explorer database schema via commands | https://learn.microsoft.com/en-us/azure/data-explorer/clone-database-schema | | Connect common SQL tools to Azure Data Explorer via emulation | https://learn.microsoft.com/en-us/azure/data-explorer/connect-common-apps | | Configure JDBC connectivity to Azure Data Explorer | https://learn.microsoft.com/en-us/azure/data-explorer/connect-jdbc | | Set up ODBC connections to Azure Data Explorer | https://learn.microsoft.com/en-us/azure/data-explorer/connect-odbc | | Query Azure Storage external tables from Azure Data Explorer | https://learn.microsoft.com/en-us/azure/data-explorer/external-azure-storage-tables-query | | Use ADX connector in Power Automate flows | https://learn.microsoft.com/en-us/azure/data-explorer/flow | | Automate ADX queries with Power Automate examples | https://learn.microsoft.com/en-us/azure/data-explorer/flow-usage | | Configure Grafana integration with Azure Data Explorer | https://learn.microsoft.com/en-us/azure/data-explorer/grafana | | Configure Event Grid ingestion from storage to Azure Data Explorer | https://learn.microsoft.com/en-us/azure/data-explorer/ingest-data-event-grid-overview | | Ingest Splunk Enterprise data into Azure Data Explorer | https://learn.microsoft.com/en-us/azure/data-explorer/ingest-data-splunk | | Ingest data from Splunk Universal Forwarder into Azure Data Explorer | https://learn.microsoft.com/en-us/azure/data-explorer/ingest-data-splunk-uf | | Configure Telegraf Azure Data Explorer output plugin | https://learn.microsoft.com/en-us/azure/data-explorer/ingest-data-telegraf | | Use ADX input/output bindings in Azure Functions | https://learn.microsoft.com/en-us/azure/data-explorer/integrate-azure-functions | | Integrate MCP servers with Azure Data Explorer | https://learn.microsoft.com/en-us/azure/data-explorer/integrate-mcp-servers | | Connect Azure Data Explorer to Kibana via K2Bridge | https://learn.microsoft.com/en-us/azure/data-explorer/k2bridge | | Query ADX from Jupyter using Kqlmagic | https://learn.microsoft.com/en-us/azure/data-explorer/kqlmagic | | Query ADX as a linked server from SQL Server | https://learn.microsoft.com/en-us/azure/data-explorer/linked-server | | Run ADX queries via Logic Apps connector | https://learn.microsoft.com/en-us/azure/data-explorer/logic-apps | | Configure OpenTelemetry collector to ingest into Azure Data Explorer | https://learn.microsoft.com/en-us/azure/data-explorer/open-telemetry-connector | | Build Power Apps that query Azure Data Explorer via connector | https://learn.microsoft.com/en-us/azure/data-explorer/power-apps-connector | | Integrate Azure Data Explorer with Microsoft Purview | https://learn.microsoft.com/en-us/azure/data-explorer/purview | | Query Azure Data Explorer using the Python data client library | https://learn.microsoft.com/en-us/azure/data-explorer/python-query-data | | Query Azure Data Explorer from MATLAB using authorization tokens | https://learn.microsoft.com/en-us/azure/data-explorer/query-matlab | | Use Redash native connector with Azure Data Explorer | https://learn.microsoft.com/en-us/azure/data-explorer/redash | | Use Serilog sink to stream logs into Azure Data Explorer | https://learn.microsoft.com/en-us/azure/data-explorer/serilog-sink | | Set up Sisense integration with Azure Data Explorer | https://learn.microsoft.com/en-us/azure/data-explorer/sisense | | Run KQL queries and stored functions over TDS from SQL clients | https://learn.microsoft.com/en-us/azure/data-explorer/sql-kql-queries-and-stored-functions | | Connect to Azure Data Explorer using SQL Server emulation (TDS endpoint) | https://learn.microsoft.com/en-us/azure/data-explorer/sql-server-emulation-overview | | Connect Azure Data Explorer to Tableau via ODBC | https://learn.microsoft.com/en-us/azure/data-explorer/tableau | | Debug KQL inline Python plugin code using Visual Studio Code | https://learn.microsoft.com/en-us/kusto/debug-inline-python?view=microsoft-fabric |

Deployment

| Topic | URL | |-------|-----| | Automate provisioning of Azure Data Explorer environments | https://learn.microsoft.com/en-us/azure/data-explorer/automated-deploy-overview | | Use Azure DevOps pipelines for Azure Data Explorer schema deployment | https://learn.microsoft.com/en-us/azure/data-explorer/devops | | Migrate Azure Data Explorer clusters to multiple availability zones | https://learn.microsoft.com/en-us/azure/data-explorer/migrate-cluster-to-multiple-availability-zone | | Migrate Azure Data Explorer VNet injection to private endpoints | https://learn.microsoft.com/en-us/azure/data-explorer/security-network-migrate-vnet-to-private-endpoint |