458 lines
18 KiB
Markdown
458 lines
18 KiB
Markdown
# CI System Runbook
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Triage guide for the local CI/CD system. Each entry: symptom → triage commands → fix → escalation.
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---
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## 1. Runner offline in Gitea UI
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**Symptom**: `http://10.10.20.11:3100/admin/runners` shows `local-windows-runner` as offline.
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Queued jobs stay pending indefinitely.
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**Triage**:
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```powershell
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# Check service state
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Get-Service act_runner
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# Last 50 lines of runner log
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Get-Content 'F:\CI\act_runner\logs\act_runner.log' -Tail 50
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# Check registration file is intact
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Test-Path 'F:\CI\act_runner\.runner'
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```
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**Fix**:
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```powershell
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# Restart the service
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Restart-Service act_runner
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# Verify it came back online (wait ~10s then check Gitea UI)
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Get-Service act_runner | Select-Object Status, StartType
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# If service won't start, check NSSM log
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& 'C:\nssm\nssm.exe' status act_runner
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```
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If the `.runner` registration file is missing or corrupt, re-register:
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```powershell
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cd F:\CI\act_runner
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.\act_runner.exe register --no-interactive `
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--instance http://10.10.20.11:3100 `
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--token <token-from-gitea-admin> `
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--name local-windows-runner `
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--labels "windows-build:host,dotnet:host,msbuild:host"
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```
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**Escalation**: If the runner restarts but goes offline again within minutes, check Event Viewer → Application for `act_runner` errors and inspect `F:\CI\act_runner\logs\`.
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---
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## 2. All builds fail in Phase 2 (VM clone / start)
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**Symptom**: `Invoke-CIJob.ps1` fails at Phase 2 with errors like:
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- `vmrun clone failed`
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- `vmrun start failed`
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- `Template VMX not found`
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- `Could not detect VM IP address`
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**Triage**:
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```powershell
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# List all running VMs
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& 'C:\Program Files (x86)\VMware\VMware Workstation\vmrun.exe' -T ws list
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# Check template VMX exists and is accessible
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Test-Path 'F:\CI\Templates\WinBuild2025\WinBuild2025.vmx'
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# Check for orphaned clones that may be consuming disk
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Get-ChildItem 'F:\CI\BuildVMs\' -Directory | Select-Object Name, LastWriteTime
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# Check disk free space
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Get-PSDrive F | Select-Object Name, Free, Used
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# Check for a stuck vm-start lock from a crashed job
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Test-Path 'F:\CI\State\vm-start.lock'
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```
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**Fix** — by root cause:
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*Template VMX missing/moved*: check `GITEA_CI_TEMPLATE_PATH` in `F:\CI\act_runner\config.yaml`.
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*Parent VMDK locked* (VMware left a lock file after host crash):
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```powershell
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# Stop all VMs
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& vmrun.exe -T ws stop 'F:\CI\Templates\WinBuild2025\WinBuild2025.vmx' hard
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# Delete lock files
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Remove-Item 'F:\CI\Templates\WinBuild2025\*.lck' -Recurse -Force -ErrorAction SilentlyContinue
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```
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*Snapshot missing* (`BaseClean` was deleted or renamed):
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```powershell
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# List snapshots on template VM
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& vmrun.exe -T ws listSnapshots 'F:\CI\Templates\WinBuild2025\WinBuild2025.vmx'
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# Update GITEA_CI_SNAPSHOT_NAME in config.yaml to match the available snapshot name
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```
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*Disk full* (clone delta files need space):
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```powershell
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# Emergency cleanup — remove all orphaned clones
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& 'N:\Code\Workspace\Local-CI-CD-System\scripts\Cleanup-OrphanedBuildVMs.ps1' -MaxAgeHours 0
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# Then run retention
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& 'N:\Code\Workspace\Local-CI-CD-System\scripts\Invoke-RetentionPolicy.ps1' -AggressiveRetentionDays 3
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```
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*Stale vm-start lock* (from a job that crashed without cleanup):
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```powershell
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Remove-Item 'F:\CI\State\vm-start.lock' -Force
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Remove-Item 'F:\CI\State\ip-leases\*.lease' -Force
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```
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**Escalation**: If `vmrun clone` fails with exit code -1 even after clearing locks and confirming disk space, re-open VMware Workstation UI and check the template VM is intact and the snapshot is listed.
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---
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## 3. Builds are slow
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**Symptom**: jobs that previously completed in ~3 min now take 8+ min.
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Phase durations visible in `F:\CI\Logs\<jobId>\invoke-ci.jsonl`.
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**Triage**:
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```powershell
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# Check disk free space (below 50 GB = fragmented writes)
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Get-PSDrive F | Select-Object @{n='FreeGB';e={[math]::Round($_.Free/1GB,1)}}
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# Check active VM CPU usage (Task Manager or:)
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Get-Process vmware-vmx | Select-Object CPU, WorkingSet | Sort-Object CPU -Descending
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# Check VMnet8 NAT adapter status
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Get-NetAdapter | Where-Object { $_.Name -like 'VMware*' }
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# Parse JSONL for per-phase durations (requires jq or manual inspection)
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# Each phase has a 'start' and 'success' event — diff the 'ts' fields.
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Get-Content 'F:\CI\Logs\<jobId>\invoke-ci.jsonl' | ConvertFrom-Json | Format-Table ts,phase,status
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```
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**Fix** — by root cause:
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*Low disk space → fragmented VMDKs*: run retention policy, then consider `vmware-vdiskmanager -d` to defragment the template VMDK.
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*High vmware-vmx CPU with many VMs*: reduce `capacity` in `config.yaml` from 4 to 2.
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*VMnet8 NAT bottleneck* (slow pip/nuget downloads inside VM): check `Services.msc` → `VMware NAT Service` is running.
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*NVMe saturation*: if the host NVMe is at 100% I/O (Task Manager → Performance → Disk), all four concurrent VMs are competing. Reduce `capacity: 2`.
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**Escalation**: Use `invoke-ci.jsonl` to identify which phase is slow across multiple jobs. Phase 1 slow = host git or network. Phase 2-3b slow = disk I/O. Phase 5 slow = build itself (not a CI infra problem).
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---
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## 4. Template VMX corrupt after host crash
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**Symptom**: After an unclean host shutdown, `vmrun clone` or `vmrun start` on the template fails. VMware Workstation shows the template in an error state.
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**Triage**:
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```powershell
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# Try starting the template directly in VMware Workstation UI
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# If it reports "configuration file error" or "disk lock", proceed below.
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# Check for lock files
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Get-ChildItem 'F:\CI\Templates\WinBuild2025\' -Recurse -Filter '*.lck'
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# Check if backup exists
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Get-ChildItem 'F:\CI\Backups\' -Directory | Sort-Object LastWriteTime -Descending | Select-Object -First 5
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```
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**Fix**:
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*Lock files only* (common after hard shutdown):
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```powershell
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# Ensure no VMware processes are running
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Get-Process vmware*, vmrun -ErrorAction SilentlyContinue | Stop-Process -Force
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# Remove locks
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Remove-Item 'F:\CI\Templates\WinBuild2025\*.lck' -Recurse -Force
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# Test clone
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& vmrun.exe -T ws listSnapshots 'F:\CI\Templates\WinBuild2025\WinBuild2025.vmx'
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```
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*VMX or VMDK truly corrupt — restore from backup*:
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```powershell
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# Stop all CI activity first
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Stop-Service act_runner
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# Identify latest backup
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$latest = Get-ChildItem 'F:\CI\Backups\' -Directory | Sort-Object LastWriteTime -Descending | Select-Object -First 1
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Write-Host "Restoring from: $($latest.FullName)"
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# Replace template directory
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Remove-Item 'F:\CI\Templates\WinBuild2025\' -Recurse -Force
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Copy-Item $latest.FullName 'F:\CI\Templates\WinBuild2025\' -Recurse
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# Restart runner
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Start-Service act_runner
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```
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*No backup exists*: must re-provision the template from scratch.
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Follow `docs/WINDOWS-TEMPLATE-SETUP.md` → Fase A (Deploy) → Fase B (Prepare).
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Estimated time: 2-4 hours including Windows Update.
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**Escalation**: If VMware Workstation itself is damaged (rare), reinstall VMware and re-import the template VMX. The VMDK files survive a VMware reinstall as long as the disk is intact.
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---
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## Quick Reference
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| Symptom | First command |
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| ------------------- | ------------------------------------------------------------------ |
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| Runner offline | `Get-Service act_runner`, then `Restart-Service act_runner` |
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| Phase 2 clone fails | `Test-Path F:\CI\Templates\WinBuild2025\WinBuild2025.vmx` |
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| Disk full | `Get-PSDrive F \| Select Free`; run `Invoke-RetentionPolicy.ps1` |
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| Stale lock | `Remove-Item F:\CI\State\vm-start.lock` |
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| Slow builds | Check `invoke-ci.jsonl` phase timestamps; check disk I/O |
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| Template corrupt | Remove `*.lck` files; if persistent, restore from `F:\CI\Backups\` |
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| Snapshot missing | `vmrun listSnapshots <vmx>`; update `GITEA_CI_SNAPSHOT_NAME` |
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| IP collision | `Remove-Item F:\CI\State\ip-leases\*.lease`; lower `capacity` |
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---
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## 5. Template Refresh Procedure
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Use this procedure when the template OS needs updated packages, toolchain upgrades, or
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a new snapshot. Run on the **host** with an elevated PowerShell 5.1 session.
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### 5.1 Pre-flight
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```powershell
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# Stop the runner so no CI jobs start during the refresh
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Stop-Service act_runner
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# Verify no clone VMs are running
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& 'C:\Program Files (x86)\VMware\VMware Workstation\vmrun.exe' list
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# Expected: "Total running VMs: 0"
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# Backup the existing template (keeps last 3 by default)
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& 'N:\Code\Workspace\Local-CI-CD-System\scripts\Backup-CITemplate.ps1' -AllTemplates
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```
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### 5.2 Boot the template
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**Windows (WinBuild2025)**:
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```powershell
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$vmx = 'F:\CI\Templates\WinBuild2025\WinBuild2025.vmx'
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& 'C:\Program Files (x86)\VMware\VMware Workstation\vmrun.exe' start $vmx gui
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```
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**Linux (LinuxBuild2404)**:
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```powershell
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$vmx = 'F:\CI\Templates\LinuxBuild2404\LinuxBuild2404.vmx'
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& 'C:\Program Files (x86)\VMware\VMware Workstation\vmrun.exe' start $vmx gui
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```
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### 5.3 Apply updates inside the template
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**Windows** — connect via WinRM or open the VMware console, then run the Prepare
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script from the host:
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```powershell
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$vmxWin = 'F:\CI\Templates\WinBuild2025\WinBuild2025.vmx'
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$credTgt = 'BuildVMGuest' # Windows Credential Manager target
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$cred = Get-StoredCredential -Target $credTgt # requires CredentialManager module
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& 'N:\Code\Workspace\Local-CI-CD-System\template\Prepare-WinBuild2025.ps1' `
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-VMXPath $vmxWin `
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-Credential $cred
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```
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**Linux** — SSH into the template and run the toolchain script:
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```powershell
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$vmxLin = 'F:\CI\Templates\LinuxBuild2404\LinuxBuild2404.vmx'
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# Get IP (wait for VMware Tools if needed)
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$ip = & 'C:\Program Files (x86)\VMware\VMware Workstation\vmrun.exe' getGuestIPAddress $vmxLin -wait
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# Apply updates
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& 'N:\Code\Workspace\Local-CI-CD-System\template\Prepare-LinuxBuild2404.ps1' `
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-VMXPath $vmxLin `
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-SshKeyPath 'F:\CI\keys\ci_linux'
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```
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Alternatively, run `Install-CIToolchain-WinBuild2025.ps1` / `Install-CIToolchain-Linux2404.sh`
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manually inside the guest to apply only toolchain changes without the full Prepare script.
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### 5.4 Shut down and snapshot
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```powershell
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# Shut down gracefully (wait up to 120 s)
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$vmx = 'F:\CI\Templates\WinBuild2025\WinBuild2025.vmx' # or Linux vmx
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& 'C:\Program Files (x86)\VMware\VMware Workstation\vmrun.exe' stop $vmx soft
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# Name: BaseClean_yyyyMMdd (keeps old name for rollback reference)
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$snapshotName = "BaseClean_$(Get-Date -Format 'yyyyMMdd')"
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& 'C:\Program Files (x86)\VMware\VMware Workstation\vmrun.exe' snapshot $vmx $snapshotName
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Write-Host "Snapshot created: $snapshotName"
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```
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Confirm no `.vmem` / `.vmsn` files exist before snapshotting (see AGENTS.md item 9):
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```powershell
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Get-ChildItem (Split-Path $vmx) -Filter '*.vmem' # must be empty
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```
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### 5.5 Validate
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```powershell
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# Run the validation script
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& 'N:\Code\Workspace\Local-CI-CD-System\template\Validate-DeployState.ps1' `
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-VMXPath $vmx -SnapshotName $snapshotName
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```
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For Linux, also run a quick SSH smoke-test from the host:
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```powershell
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Import-Module 'N:\Code\Workspace\Local-CI-CD-System\scripts\_Transport.psm1' -Force
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$result = Invoke-SshCommand -IP $ip -KeyPath 'F:\CI\keys\ci_linux' `
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-Command 'gcc --version && cmake --version' -PassThru
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$result.Output
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```
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### 5.6 Run a smoke workflow
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Push a trivial commit to a test repo or trigger a manual workflow run via Gitea UI.
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Confirm the job uses the new snapshot and completes successfully.
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### 5.7 Promote the new snapshot
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Update `GITEA_CI_SNAPSHOT_NAME` in `runner/config.yaml` and redeploy:
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```powershell
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# Edit runner/config.yaml: set GITEA_CI_SNAPSHOT_NAME to $snapshotName
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notepad 'N:\Code\Workspace\Local-CI-CD-System\runner\config.yaml'
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# Deploy config and restart runner
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Copy-Item 'N:\Code\Workspace\Local-CI-CD-System\runner\config.yaml' `
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'F:\CI\act_runner\config.yaml' -Force
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Restart-Service act_runner
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```
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### 5.8 Retain old snapshot 7 days, then delete
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Keep the previous `BaseClean_*` snapshot for 7 days as a rollback point:
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```powershell
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# List existing snapshots
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& 'C:\Program Files (x86)\VMware\VMware Workstation\vmrun.exe' listSnapshots $vmx
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# After 7 days, delete the old snapshot (replace OLDNAME with actual name)
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# & 'C:\Program Files (x86)\VMware\VMware Workstation\vmrun.exe' deleteSnapshot $vmx OLDNAME
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```
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### 5.9 Rollback procedure
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If a smoke-test failure is discovered after promotion:
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```powershell
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# Revert runner/config.yaml to prior GITEA_CI_SNAPSHOT_NAME
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# (or set it back to 'BaseClean' for the permanent base)
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Copy-Item 'N:\Code\Workspace\Local-CI-CD-System\runner\config.yaml' `
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'F:\CI\act_runner\config.yaml' -Force
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Restart-Service act_runner
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# The prior snapshot is still in the template — jobs will use it immediately.
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```
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---
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## 6. Windows host pre-migration baseline (reference for B7)
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Recorded 2026-05-17 — `Measure-CIBenchmark.ps1 × 4 iterations`, Python
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orchestrator post-Phase-A, Windows 11 + VMware Workstation Pro,
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template `WinBuild2025` / snapshot `BaseClean`.
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| Iter | Clone (s) | Start (s) | IP acquire (s) | WinRM (s) | Destroy (s) | Boot total (s) |
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| ------- | --------- | --------- | -------------- | --------- | ----------- | -------------- |
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| 1 | 0.63 | 1.75 | 66.57 | 0.01 | 4.81 | 68.96 |
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| 2 | 0.63 | 1.89 | 20.21 | 0.01 | 6.39 | 22.74 |
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| 3 | 0.62 | 1.72 | 85.07 | 0.01 | 4.50 | 87.42 |
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| 4 | 0.61 | 1.72 | 60.97 | 0.01 | 4.20 | 63.31 |
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| **avg** | **0.62** | **1.77** | **58.20** | **0.01** | **4.98** | **60.61** |
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**Key finding**: IP-acquire phase dominates total time and is highly variable
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(20–85 s) due to VMware Tools guest IP detection latency. Clone/Start/WinRM
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are negligible and stable.
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**B7 comparison guidance** (tolerance ±20%):
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| Metric | Windows baseline | ±20% range |
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| ---------------- | ---------------- | ----------- |
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| Clone | 0.62 s | 0.50–0.74 s |
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| Start | 1.77 s | 1.42–2.12 s |
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| Destroy | 4.98 s | 3.98–5.98 s |
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| Boot total (avg) | 60.6 s | 48.5–72.7 s |
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IP-acquire variance on Windows (σ ≈ 26 s) means boot-total comparison
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requires ≥10 samples on Linux to be meaningful. If Linux avg boot total
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exceeds 72.7 s, open an issue in `TODO.md` with per-phase breakdown before
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declaring B7 failed — check whether IP-acquire increased or non-IP phases
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regressed.
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---
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## 7. Linux host post-migration baseline (B7 result)
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Recorded 2026-05-24 — `Measure-CIBenchmark.ps1 × 4 iterations`, Linux Mint
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host + VMware Workstation Pro Linux, template `WinBuild2025` / snapshot
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`BaseClean`. Ready column = WinRM/5986 TCP probe.
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| Iter | Clone (s) | Start (s) | IP acquire (s) | Ready (s) | Destroy (s) | Boot total (s) |
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| ------- | --------- | --------- | -------------- | --------- | ----------- | -------------- |
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| 1 | 0.42 | 1.89 | 53.06 | 0.03 | 4.55 | 55.40 |
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| 2 | 0.40 | 1.89 | 129.76 | 0.00 | 4.96 | 132.05 |
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| 3 | 0.52 | 2.81 | 176.83 | 0.00 | 5.67 | 180.16 |
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| 4 | 0.40 | 1.90 | 39.17 | 0.00 | 4.51 | 41.47 |
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| **avg** | **0.44** | **2.12** | **99.71** | **0.01** | **4.92** | **102.27** |
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**Phase verdict vs Windows baseline (±20%):**
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| Metric | Windows | Linux avg | In range? |
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| ------- | ------- | --------- | ---------------------------------- |
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| Clone | 0.62 s | 0.44 s | ✓ (faster) |
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| Start | 1.77 s | 2.12 s | ✓ (at upper edge) |
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| Destroy | 4.98 s | 4.92 s | ✓ |
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| IP avg | 58.2 s | 99.7 s | ✗ outside — IP variance (39–177 s) |
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| Ready | 0.01 s | 0.01 s | ✓ |
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**Key finding**: Clone/Start/Ready/Destroy within ±20%. IP-acquire dominates
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and is highly variable on Linux host (σ ≈ 57 s, range 39–177 s) — wider than
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Windows (σ ≈ 26 s). This is VMware Tools DHCP/guestinfo reporting latency,
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not a regression in orchestrator logic. With 4 samples the avg is not stable;
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additional runs may close the gap. No non-IP phase regressed.
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---
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## 8. Static IP baseline — WinBuild2025 with ip_pool (B8 result)
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Recorded 2026-05-25 — `Measure-CIBenchmark.ps1 -StaticIP 192.168.79.200 -Iterations 4`,
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Linux Mint host, template `WinBuild2025` / snapshot `BaseClean`.
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`guestinfo.ip-assignment` injected into cloned VMX before start;
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`ci-static-ip.ps1` scheduled task applies IP at boot and writes back
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`guestinfo.ci-ip`. IP column = time until `guestinfo.ci-ip` readable via
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`vmrun readVariable` (`-GuestInfoOnly` mode — DHCP fallback disabled).
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Ready column = WinRM/5986 TCP probe after IP known.
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| Iter | Clone (s) | Start (s) | IP acquire (s) | Ready (s) | Destroy (s) | Boot total (s) |
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| ------- | --------- | --------- | -------------- | --------- | ----------- | -------------- |
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| 1 | 0.41 | 1.86 | 21.80 | 0.00 | 9.75 | 24.07 |
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| 2 | 0.40 | 1.88 | 21.74 | 0.00 | 9.81 | 24.02 |
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| 3 | 0.40 | 1.90 | 21.75 | 0.00 | 12.26 | 24.05 |
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| 4 | 0.40 | 1.89 | 21.77 | 0.00 | 9.77 | 24.06 |
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| **avg** | **0.40** | **1.88** | **21.77** | **0.00** | **10.40** | **24.05** |
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|
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**Comparison vs B7 DHCP baseline (WinBuild2025, same host):**
|
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|
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| Metric | B7 DHCP avg | B8 static avg | Delta |
|
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| ----------- | ----------- | ------------- | ------------- |
|
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| IP acquire | 99.7 s | 21.8 s | **−78 s (−78%)** |
|
||
| Boot total | 102.3 s | 24.1 s | **−78 s (−76%)** |
|
||
| Clone | 0.44 s | 0.40 s | ≈ same |
|
||
| Start | 2.12 s | 1.88 s | ≈ same |
|
||
| Ready | 0.01 s | 0.00 s | ≈ same |
|
||
|
||
**Key findings**:
|
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- Static IP reduces boot-to-ready from ~102 s to ~24 s — **4× faster**.
|
||
- IP acquire is now deterministic: σ < 0.03 s (vs σ ≈ 57 s with DHCP).
|
||
- Ready = 0 s: WinRM is already listening on the static IP by the time
|
||
`guestinfo.ci-ip` is written — no additional TCP probe wait.
|
||
- `ci-static-ip.ps1` startup latency (~21.8 s) is the new floor; it reflects
|
||
Windows boot + Task Scheduler + NIC reconfiguration time.
|
||
- Destroy is slower than B7 (~10 s vs ~5 s) despite same template —
|
||
likely due to different clone state or disk pressure at test time.
|
||
|