d15fb7d9f4
根因: 並行 Job 的 Set up job 階段會同時寫入 RUNNER_TEMP 解法: build-api needs build-web，確保序列執行 移除: Job-level concurrency groups (不再需要) 更新: ops/runner/README.md v1.0→v2.0 Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
93 lines
2.6 KiB
Markdown
93 lines
2.6 KiB
Markdown
# GitHub Actions Runner 穩定性修復
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## 問題: `_diag/pages` 檔案衝突
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```
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Error: The file '/home/wooo/actions-runner-awoooi/_diag/pages/xxx.log' already exists.
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```
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### 根因分析 (2026-03-29 完整診斷)
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1. **發生時機**: "Set up job" 階段 (在任何自定義步驟之前)
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2. **原因**: GitHub Actions Runner 內部 bug
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- Runner 在 Job 初始化時寫入 `_diag/pages/*.log`
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- 並行執行的多個 Job 可能寫入相同的 UUID 檔案
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- 這發生在我們的清理步驟執行**之前**
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3. **次要問題**: `RUNNER_TEMP` 共享
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- `_work/_temp/_runner_file_commands` 在所有 Jobs 之間共享
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- 清理此目錄會導致 "Missing file at path" 錯誤
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### 解決方案 (v4 - 最終版 2026-03-29)
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#### 1. 序列建構 (核心修復)
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```yaml
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# build-api 必須等 build-web 完成
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build-api:
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needs: [detect-changes, build-web] # 關鍵: 依賴 build-web
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```
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**根因**: Job 並行時，"Set up job" 階段會同時寫入 `_runner_file_commands`，導致衝突
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**解法**: 改為序列執行，確保同一時間只有一個 Job 在 Runner 上
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#### 2. Workflow Concurrency (輔助)
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```yaml
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concurrency:
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group: cd-${{ github.workflow }}-${{ github.ref }}
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cancel-in-progress: true
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```
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確保同一時間只有一個 workflow 在執行
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#### 3. Job 層清理 (防禦性)
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每個 Job 開始時清理 `_diag/pages`：
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```yaml
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- name: "Clean Runner Diagnostics"
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run: |
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RUNNER_ROOT=$(dirname "$(dirname "$RUNNER_TEMP")")
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rm -rf "$RUNNER_ROOT/_diag/pages" .claude/worktrees 2>/dev/null || true
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mkdir -p "$RUNNER_ROOT/_diag/pages" 2>/dev/null || true
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```
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**警告**: 絕對不要清理 `$RUNNER_TEMP/*`，會破壞 `_runner_file_commands`
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#### 2. Systemd Timer (背景清理)
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每 5 分鐘自動清理過期的診斷檔案:
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```bash
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# 部署
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ssh wooo@192.168.0.110
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cd /path/to/awoooi/ops/runner
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bash deploy-runner-cleanup.sh
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```
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### 檔案說明
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| 檔案 | 用途 |
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|------|------|
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| `cleanup-runner-diag.sh` | 清理腳本 (安裝到 Runner 目錄) |
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| `runner-diag-cleanup.service` | Systemd service 定義 |
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| `runner-diag-cleanup.timer` | Systemd timer (每 5 分鐘) |
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| `deploy-runner-cleanup.sh` | 一鍵部署腳本 |
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### 監控
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```bash
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# 查看 timer 狀態
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sudo systemctl status runner-diag-cleanup.timer
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# 查看清理日誌
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journalctl -u runner-diag-cleanup.service -f
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# 手動觸發清理
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sudo systemctl start runner-diag-cleanup.service
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```
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### 相關文件
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- Memory: `feedback_runner_zombie_process.md`
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- ADR: 待建立 (如果問題持續)
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---
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版本: v2.0 | 更新: 2026-03-29 | 作者: Claude Code
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變更: v1.0→v2.0 序列建構取代 Job Concurrency Groups
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