Skip to main content
Community Hub

Preflight checks for ClickHouse

TL;DR

Before running the ClickHouse crawler, you can run preflight checks to perform the necessary technical validations.

Your AI can read this via Docs MCPcurl -fsSL "https://docs.atlan.com/install-docs-mcp" | bashConnect

Before running the ClickHouse crawler, you can run preflight checks to perform the necessary technical validations. The following preflight checks are completed:

Connection test​

✅ Connection test passed

❌ Connection test failed: <error message>

Validates that Atlan can establish a connection to your ClickHouse instance using the provided host, port, and credentials.

System tables access​

✅ System tables access check passed

❌ System tables access check failed: <error message>

Validates that the configured user has SELECT access to system.tables, which is required for extracting table and view metadata.

Database access​

✅ Database access check passed

❌ Database access check failed: <error message>

Validates that the configured user has SELECT access to system.databases, which is required for discovering available databases.

Column metadata access​

✅ Column metadata access check passed

❌ Column metadata access check failed: <error message>

Validates that the configured user has SELECT access to system.columns, which is required for extracting column-level metadata.