Postgres Dead Tuples Not Being Removed: Fixes (2026)
August 27, 2026
Postgres dead tuples not being removed? VACUUM can only delete rows older than the xmin horizon. Here is how to find what holds it back, and how to fix it.
#troubleshooting
MCP Server Not Showing Up in Claude Desktop: Fixes (2026)
August 20, 2026
MCP server not showing up in Claude Desktop? Check the Connectors menu, the config's JSON, a full quit, mcp.log, and the file the app reads — in that order.
Karpenter Not Scaling Up Nodes: Causes and Fixes (2026)
August 16, 2026
Karpenter not scaling up nodes? Work through the documented causes in order — NodePool and EC2NodeClass readiness, limits, requirements, taints, and CNI IPs.