# Runbook — Operations

> Tác vụ vận hành thường gặp. Copy-paste command khi cần.

## 1. Daily operations

### 1.1 Check health
```powershell
Invoke-WebRequest https://api.solutionerp.local/health/ready -SkipCertificateCheck
# → Status 200 "Healthy"
```

### 1.2 Check logs
```powershell
# Tail log hôm nay
Get-Content "C:\inetpub\solution-erp\api\logs\solution-erp-$(Get-Date -Format 'yyyyMMdd').log" -Tail 50 -Wait

# Grep error
Select-String -Path "C:\inetpub\solution-erp\api\logs\*.log" -Pattern "ERR|FTL" -Context 2
```

### 1.3 Check recent failed logins
```sql
-- Nếu có audit log (Phase 5.1). Hiện chỉ có ContractApprovals → check Serilog file.
```

## 2. Restart / rollback

### 2.1 Restart Api app pool
```powershell
Restart-WebAppPool -Name SolutionErpApi
```

### 2.2 Restart toàn bộ IIS (nặng, chỉ khi cần)
```powershell
iisreset /noforce
```

### 2.3 Rollback deploy
```powershell
# Deploy script auto-backup vào C:\inetpub\solution-erp\backups\api-{timestamp}
Stop-WebAppPool SolutionErpApi
$latest = Get-ChildItem "C:\inetpub\solution-erp\backups" | Sort-Object Name -Descending | Select-Object -First 1
Copy-Item "$($latest.FullName)\*" -Destination "C:\inetpub\solution-erp\api\" -Recurse -Force
Start-WebAppPool SolutionErpApi
Invoke-WebRequest https://api.solutionerp.local/health/ready -SkipCertificateCheck  # verify
```

## 3. Database

### 3.1 Manual backup (ngoài daily job)
```powershell
.\scripts\backup-sql.ps1 -Server "." -Database "SolutionErp" -BackupDir "C:\Backups\SolutionErp-manual"
```

### 3.2 Restore từ backup
```sql
-- WARNING: Destructive. Stop app trước.
USE master;
ALTER DATABASE SolutionErp SET SINGLE_USER WITH ROLLBACK IMMEDIATE;
RESTORE DATABASE SolutionErp
FROM DISK = N'C:\Backups\SolutionErp\SolutionErp_20260421-020000.bak'
WITH REPLACE, RECOVERY;
ALTER DATABASE SolutionErp SET MULTI_USER;
```

### 3.3 Rollback migration
```powershell
# List migrations đã apply
cd C:\Deploy\staging  # nơi có .NET SDK
dotnet ef migrations list --project src\Backend\SolutionErp.Infrastructure --startup-project src\Backend\SolutionErp.Api

# Rollback về migration cụ thể
dotnet ef database update <PreviousMigrationName> --project ... --startup-project ...
```

### 3.4 Clear test data (dev)
```sql
-- Clear toàn bộ Contracts + related (giữ master data)
DELETE FROM ContractApprovals;
DELETE FROM ContractComments;
DELETE FROM ContractAttachments;
DELETE FROM Contracts;
DELETE FROM ContractCodeSequences;
```

## 4. User management

### 4.1 Tạo user mới
```sql
-- Phase 5.1 có FE, hiện manual qua SQL (không khuyến khích — password hash phải đúng format)
-- Recommend: tạo qua UserManager trong 1 script .NET, hoặc API `POST /api/users` (chưa implement)
```

### 4.2 Reset password admin (emergency)
```powershell
# Run script one-off trên server
cd C:\inetpub\solution-erp\api
dotnet SolutionErp.Api.dll --reset-password admin@solutions.com.vn NewPassword@2026
# (Feature chưa có — Phase 5.1)
```

Temporary workaround: update `PasswordHash` qua Identity `UserManager` trong code, redeploy.

### 4.3 Unlock account bị lock
```sql
UPDATE Users SET LockoutEnd = NULL, AccessFailedCount = 0 WHERE Email = 'user@example.com';
```

### 4.4 Disable user
```sql
UPDATE Users SET IsActive = 0 WHERE Email = 'user@example.com';
-- Note: JWT hiện tại vẫn valid tới hết expiry (1h) — Phase 5.1 cần check IsActive trong middleware
```

## 5. Monitoring + incident

### 5.1 High CPU app pool
```powershell
# Identify worker process
Get-Process w3wp | Select-Object Id, CPU, WorkingSet64, StartTime
# Kill nếu stuck (IIS tự restart)
Stop-Process -Id <pid> -Force
```

### 5.2 Out of disk
```powershell
# Check logs folder
Get-ChildItem "C:\inetpub\solution-erp\api\logs" | Sort-Object LastWriteTime | Select -First 20
# Delete logs cũ hơn 30 ngày (đã config retention nhưng check)
Get-ChildItem "C:\inetpub\solution-erp\api\logs" -Filter "*.log" |
    Where-Object LastWriteTime -lt (Get-Date).AddDays(-30) | Remove-Item
```

### 5.3 Suspected brute-force attack
```powershell
# Grep 401 qua IIS log
Get-Content C:\inetpub\logs\LogFiles\W3SVC1\*.log -Tail 5000 |
    Select-String " 401 " | Group-Object { ($_ -split ' ')[8] } |
    Sort-Object Count -Descending | Select -First 10
# Nếu thấy IP suspicious → block IIS IP Restriction hoặc firewall rule
```

### 5.4 DB connection pool exhausted
```sql
-- Check active connections
SELECT DB_NAME(dbid) AS DB, COUNT(*) AS Connections, loginame AS Login
FROM sys.sysprocesses
WHERE dbid > 0
GROUP BY dbid, loginame
ORDER BY 2 DESC;

-- Kill connection cụ thể nếu stuck
KILL <spid>;
```

## 6. Deployment checklist

Trước khi deploy:
- [ ] Backup DB (manual nếu chưa auto chạy)
- [ ] Note commit SHA đang live
- [ ] Check CI/CD passed all checks
- [ ] Notify team trong Slack/Teams (nếu có downtime)

Sau deploy:
- [ ] Health check `/health/ready` → 200
- [ ] Smoke test: login + list HĐ + export Excel
- [ ] Check log 5 phút đầu không có ERR
- [ ] Monitor CPU/RAM 15 phút

## 7. Common "gotcha" vận hành

| Symptom | Fix |
|---|---|
| App pool crash rapid fail sau deploy | Disable temp: `Set-ItemProperty IIS:\AppPools\SolutionErpApi -Name failure.rapidFailProtection -Value false` — debug log → enable lại |
| User bị logout mass sau deploy | Check Jwt:Secret có đổi không — rotate secret → buộc mọi user login lại (expected nếu intentional) |
| Migration fail "connection string" | Check user secrets / env var chưa set trong app pool advanced settings |
| FE trắng trang | F12 console check path — thường do `base` trong vite.config.ts khác env, hoặc missing web.config SPA rewrite |
| Export Excel 500 | Check `wwwroot/templates` có đủ 5 file .docx/.xlsx không — ClosedXML fail khi template missing |

## 8. Escalation contacts

| Role | Name | Contact |
|---|---|---|
| Dev lead | pqhuy@solutions.local | pqhuy1987@gmail.com |
| DBA | TBD | — |
| On-call 24/7 | TBD | — |

## 9. Liên quan

- [`deployment-iis.md`](deployment-iis.md) — setup chi tiết
- [`cicd.md`](cicd.md) — CI/CD pipeline
- [`security-checklist.md`](security-checklist.md) — incident response
- [`../gotchas.md`](../gotchas.md) — bẫy dev + ops
- [`../database/database-guide.md`](../database/database-guide.md) — backup/restore detail
