Public/Kubernetes/Start-TaintWatcher.ps1
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function Start-TaintWatcher { <# .SYNOPSIS Continuously monitors and logs Kubernetes node taints to a file. .DESCRIPTION The Start-TaintWatcher function continuously monitors Kubernetes nodes for taints and logs their status to a file. It runs in an infinite loop, checking for taints every 2 seconds and recording the results to 'taint_watch.log'. This is useful for troubleshooting node scheduling issues or monitoring cluster state changes over time. Requires kubectl to be installed and configured to access the target cluster. .EXAMPLE Start-TaintWatcher Starts monitoring node taints and logs them to 'taint_watch.log' in the current directory. Use Ctrl+C to stop the monitoring process. .EXAMPLE Start-Job -ScriptBlock { Start-TaintWatcher } Runs the taint monitoring as a background job. .NOTES Author: Michiel VH Requirements: Kubernetes CLI (kubectl) must be installed and configured File: taint_watch.log will be created in the current directory #> param() $logFile = "taint_watch.log" while ($true) { Add-Content $logFile "`n===== $(Get-Date) =====" $nodes = kubectl get nodes -o json | ConvertFrom-Json foreach ($node in $nodes.items) { $nodeName = $node.metadata.name $taints = $node.spec.taints if ($taints) { Add-Content $logFile "[$nodeName] has taints:" $taints | ForEach-Object { "$($_.key)=$($_.value):$($_.effect)" } | Add-Content $logFile } else { Add-Content $logFile "[$nodeName] has no taints." } } Start-Sleep -Seconds 2 } } |