ac2340c967
Major changes: - Implemented Windows VM 109 as DR target (replaces Linux LXC) - Tested RMAN restore successfully (12-15 min RTO, 24h RPO) - Added comprehensive DR documentation: * DR_WINDOWS_VM_STATUS_2025-10-09.md - Current implementation status * DR_UPGRADE_TO_CUMULATIVE_PLAN.md - Plan for cumulative incremental backups * DR_VM_MIGRATION_GUIDE.md - Guide for VM migration between Proxmox nodes - Updated DR_WINDOWS_VM_IMPLEMENTATION_PLAN.md with completed phases New scripts: - add_system_key_dr.ps1 - SSH key setup for automated transfers - configure_listener_dr.ps1 - Oracle Listener configuration - fix_ssh_via_service.ps1 - SSH authentication fix - rman_restore_final.cmd - Working RMAN restore script (tested) - transfer_to_dr.ps1 - FULL backup transfer (renamed from 02_*) - transfer_incremental.ps1 - Incremental backup transfer (renamed from 02b_*) Cleanup: - Removed 19 obsolete scripts for Linux LXC DR - Removed 8 outdated documentation files - Organized project structure 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
357 lines
8.4 KiB
Markdown
357 lines
8.4 KiB
Markdown
# Oracle DR VM - Migration Between Proxmox Nodes
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**Purpose:** How to migrate VM 109 between Proxmox nodes while maintaining backup access
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**Scenario:** Move VM from pveelite (10.0.20.202) to pvemini (10.0.20.201) or vice versa
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---
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## 📋 OVERVIEW
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**Current Setup:**
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- VM 109 runs on pveelite (10.0.20.202)
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- Backups stored on pveelite: `/mnt/pve/oracle-backups`
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- VM has mount point: `qm set 109 -mp0 /mnt/pve/oracle-backups`
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- Mount appears in Windows as **F:\** (E:\ already used)
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**Challenge:**
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- Mount points are **node-local** - path `/mnt/pve/oracle-backups` exists only on pveelite
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- If you migrate VM to pvemini, mount point breaks
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**Solution:**
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- Create same directory structure on destination node
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- Sync backups between nodes
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- Mount point works identically on new node
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---
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## 🔄 MIGRATION PROCEDURE
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### PRE-MIGRATION CHECKLIST
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- [ ] VM 109 is powered OFF
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- [ ] You have root SSH access to both Proxmox nodes
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- [ ] You know which node you're migrating TO
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- [ ] Backups are current (check timestamp)
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---
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### STEP 1: Prepare Destination Node (pvemini)
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**On pvemini (10.0.20.201):**
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```bash
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ssh root@10.0.20.201
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# Create identical directory structure
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mkdir -p /mnt/pve/oracle-backups/ROA/autobackup
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chmod 755 /mnt/pve/oracle-backups
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chmod 755 /mnt/pve/oracle-backups/ROA
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chmod 755 /mnt/pve/oracle-backups/ROA/autobackup
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# Verify structure
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ls -la /mnt/pve/oracle-backups/ROA/autobackup
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```
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---
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### STEP 2: Sync Backups from Source to Destination
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**Option A: Full Sync (first time migration)**
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```bash
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# On pvemini, sync all backups from pveelite
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rsync -avz --progress \
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root@10.0.20.202:/mnt/pve/oracle-backups/ \
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/mnt/pve/oracle-backups/
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# This copies all backup files (~15 GB, takes 2-3 minutes on 1Gbps network)
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```
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**Option B: Incremental Sync (if you already synced before)**
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```bash
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# On pvemini, sync only new/changed files
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rsync -avz --progress --update \
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root@10.0.20.202:/mnt/pve/oracle-backups/ \
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/mnt/pve/oracle-backups/
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# Much faster - only copies new backups
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```
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**Verify sync:**
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```bash
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# Check file count matches
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ssh root@10.0.20.202 "ls /mnt/pve/oracle-backups/ROA/autobackup/*.bkp | wc -l"
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ls /mnt/pve/oracle-backups/ROA/autobackup/*.bkp | wc -l
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# Should be same number
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```
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---
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### STEP 3: Migrate VM via Proxmox
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**Option A: Online Migration (VM stays running)**
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```bash
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# From Proxmox CLI on source node (pveelite):
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qm migrate 109 pvemini --online
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# This uses live migration - VM doesn't stop
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# Takes 5-10 minutes depending on RAM/disk
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```
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**Option B: Offline Migration (VM must be stopped)**
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```bash
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# Stop VM first
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qm stop 109
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# Migrate
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qm migrate 109 pvemini
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# Faster than online, but requires downtime
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```
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**Option C: Via Proxmox Web UI**
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```
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1. Select VM 109 on pveelite
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2. Click "Migrate"
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3. Select target node: pvemini
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4. Choose migration type: online or offline
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5. Click "Migrate"
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```
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---
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### STEP 4: Verify Mount Point After Migration
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**After migration completes:**
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```bash
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# On pvemini, check VM config includes mount point
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qm config 109 | grep mp0
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# Expected output:
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# mp0: /mnt/pve/oracle-backups,mp=/mnt/oracle-backups
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# If missing, add it:
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qm set 109 -mp0 /mnt/pve/oracle-backups,mp=/mnt/oracle-backups
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```
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---
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### STEP 5: Start VM and Verify Access
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```bash
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# Start VM on new node
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qm start 109
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# Wait for boot
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sleep 180
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# Check mount in Windows
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ssh -p 22122 romfast@10.0.20.37 "Get-PSDrive F"
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# Should show F:\ with Used/Free space
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# Verify backup files accessible
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ssh -p 22122 romfast@10.0.20.37 "Get-ChildItem F:\ROA\autobackup\*.bkp | Measure-Object"
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# Should show backup file count
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```
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---
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### STEP 6: Update PRIMARY Transfer Scripts
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**On PRIMARY (10.0.20.36):**
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Backup transfer scripts need to know which node to send to.
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**Option A: Update scripts to point to new node**
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```powershell
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# Edit transfer scripts
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cd D:\rman_backup
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# Find and replace in transfer scripts:
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# ÎNAINTE:
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$DRHost = "10.0.20.202" # pveelite
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# DUPĂ:
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$DRHost = "10.0.20.201" # pvemini
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```
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**Option B: Use DNS/hostname (RECOMMENDED)**
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```powershell
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# In transfer scripts, use hostname instead of IP:
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$DRHost = "pvedr" # DNS name
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# Then update DNS to point to active node:
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# pvedr → 10.0.20.201 (currently pvemini)
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# When you migrate back, just update DNS
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```
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---
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## 🔄 ONGOING SYNC STRATEGY
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### If VM Stays on New Node Long-Term
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**Setup automated sync from PRIMARY → new node:**
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Just update transfer scripts as in Step 6 above. Backups will now go directly to pvemini.
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**Old backups on pveelite:**
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- Can be deleted after verification
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- Or kept as additional backup copy (recommended)
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```bash
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# On pveelite, cleanup old backups after 7 days
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find /mnt/pve/oracle-backups/ROA/autobackup -name "*.bkp" -mtime +7 -delete
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```
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---
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### If You Migrate VM Back and Forth
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**Scenario:** VM moves between nodes frequently
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**Solution 1: Sync in both directions**
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```bash
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# Cronjob on pveelite (every 6 hours)
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0 */6 * * * rsync -az root@10.0.20.201:/mnt/pve/oracle-backups/ /mnt/pve/oracle-backups/
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# Cronjob on pvemini (every 6 hours)
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0 */6 * * * rsync -az root@10.0.20.202:/mnt/pve/oracle-backups/ /mnt/pve/oracle-backups/
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```
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**Solution 2: Shared Storage (NFS/CIFS)**
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Use Proxmox shared storage instead of local paths:
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- Setup NFS server on one node
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- Both nodes mount same NFS share
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- `/mnt/pve/oracle-backups` points to shared storage
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- VM migration doesn't require backup sync
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---
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## 📊 MIGRATION CHECKLIST
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### Before Migration:
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- [ ] VM 109 is stopped (or prepared for online migration)
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- [ ] Destination node has directory: `/mnt/pve/oracle-backups/ROA/autobackup`
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- [ ] Backups synced to destination node (rsync completed)
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- [ ] You have tested restore recently (weekly test passed)
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### During Migration:
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- [ ] VM migration initiated (online or offline)
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- [ ] Migration progress monitored (no errors)
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- [ ] Migration completed successfully
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### After Migration:
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- [ ] VM 109 shows as running on new node
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- [ ] Mount point configured: `qm config 109 | grep mp0`
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- [ ] VM started successfully
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- [ ] F:\ drive accessible in Windows: `Get-PSDrive F`
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- [ ] Backup files visible: `Get-ChildItem F:\ROA\autobackup\*.bkp`
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- [ ] PRIMARY transfer scripts updated (point to new node IP)
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- [ ] Test restore completed successfully
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---
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## ⚠️ TROUBLESHOOTING
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### Mount Point Not Visible in VM After Migration
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**Symptom:** F:\ drive missing in Windows after migration
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**Solution:**
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```bash
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# On new node, verify mount point config
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qm config 109 | grep mp0
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# If missing, add it
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qm set 109 -mp0 /mnt/pve/oracle-backups,mp=/mnt/oracle-backups
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# Restart VM
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qm stop 109
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qm start 109
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```
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### Backup Files Not Accessible
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**Symptom:** F:\ exists but shows as empty
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**Cause:** Backups not synced to new node
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**Solution:**
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```bash
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# Re-sync backups from old node
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rsync -avz root@10.0.20.202:/mnt/pve/oracle-backups/ /mnt/pve/oracle-backups/
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# Verify files exist
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ls -lh /mnt/pve/oracle-backups/ROA/autobackup/*.bkp
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```
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### PRIMARY Still Sending to Old Node
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**Symptom:** New backups not appearing on new node
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**Cause:** Transfer scripts still point to old node IP
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**Solution:**
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Update `$DRHost` in transfer scripts on PRIMARY (see Step 6)
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---
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## 🎯 MIGRATION TIMELINE
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| Task | Duration | Downtime |
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|------|----------|----------|
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| Prepare destination node | 5 min | None |
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| Sync backups (full, ~15GB) | 3 min | None |
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| Migrate VM (offline) | 5 min | **5 min** |
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| Verify and start VM | 3 min | **3 min** |
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| Update PRIMARY scripts | 2 min | None |
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| **Total** | **18 min** | **8 min** |
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**With online migration:** 0 minutes downtime (VM keeps running during migration)
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---
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## 📞 QUICK REFERENCE
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**Current Setup:**
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- Source node: pveelite (10.0.20.202)
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- Destination node: pvemini (10.0.20.201)
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- VM: 109 (oracle-dr-windows)
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- Backup path: `/mnt/pve/oracle-backups`
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- Windows mount: F:\ (not E:\ - already used)
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**Key Commands:**
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```bash
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# Sync backups
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rsync -avz root@SOURCE:/mnt/pve/oracle-backups/ /mnt/pve/oracle-backups/
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# Migrate VM
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qm migrate 109 DESTINATION --online
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# Check mount
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qm config 109 | grep mp0
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# Add mount if missing
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qm set 109 -mp0 /mnt/pve/oracle-backups,mp=/mnt/oracle-backups
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```
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---
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**Generated:** 2025-10-09
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**Version:** 1.0
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**Status:** Ready for use
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**See Also:** DR_UPGRADE_TO_CUMULATIVE_PLAN.md
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