Auto-update blog content from Obsidian: 2025-11-17 22:37:32
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@@ -151,6 +151,31 @@ None. 😎
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I'm kidding, the rollback consists of restoring the box configuration, shutdown the OPNsense VMs and plug back the Ethernet cable into the box.
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### Verification Plan
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To validate the migration, I'm drawing up a checklist:
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1. WAN DHCP lease in the VM.
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2. Ping from my PC to the VIP of the User VLAN.
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3. Ping cross VLAN.
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4. SSH into my machines.
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5. Renew DHCP lease.
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6. Check `ipconfig`
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7. Test internet website.
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8. Check firewall logs.
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9. Check my webservices.
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10. Verify if my internal webservices are not accessible from outside.
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11. Test VPN.
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12. Check all IoT devices.
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13. Check Home Assistant features.
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14. Check if the TV works.
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15. Test the Chromecast.
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16. Print something.
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17. Verify DNS blocklist.
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18. Speedtest
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19. Failover
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20. Disaster Recovery
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21. Champaign!
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Will it work? Let's find out!
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### Migration Steps
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@@ -165,76 +190,50 @@ In `Services` > `ISC DHCPv4`, and for all my interfaces, I disable the DHCP serv
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3. **Change IP addresses of the box.**
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In `Interfaces`, and for all my interfaces, I modify the IP of the firewall, from `.1` to `.253`. I want to reuse the same IP address, and have this instance still reachable if needed.
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In `Interfaces`, and for all my interfaces, I modify the IP of the firewall, from `.1` to `.253`. I want to reuse the same IP address as VIP, and have this instance still reachable if needed.
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As soon as I click on `Apply`, I lost the communication, which is expected
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As soon as I click on `Apply`, I lost the communication, which is expected.
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4. **Change VIP on the VM.**
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On my master VM, In `Interfaces` > `Virtual IPs` > `Settings`, I change the VIP address for each interface and set it to `.1`.
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5. **Disable gateway on VM.**
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In `System` > `Gateways` > `Configuration`, I disable the `LAN_GW` which is not needed anymore.
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6. **Configure DHCP on both VMs.**
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In both VM, in `Services` > `Dnsmasq DNS & DHCP`, I enable the service on my 5 interfaces.
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7. **Enable mDNS repeater on VM.**
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In `Services` > `mDNS Repeater`, I enable the service and also enable CARP Failover.
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The service does not start. I'll see that problem later.
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8. **Replicate services on VM.**
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In `System` > `High Availability` > `Status`, I click the button to `Synchronize and reconfigure all`.
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9. **Ethernet cable swap.**
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Physically in my rack, I unplug the Ethernet cable from the WAN port (`igc0`) of my physical OPNsense box and plug it into the port 15 of my UniFi switch.
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---
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## Verification
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😮💨 I take a deep breath and start the checks
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#### Change VIP on VM
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On my Master VM, In Interfaces > Virtual IPs > Settings, I change the VIP address for all interface
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Then I click Apply
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#### Remove GW on VM
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In - # System: Gateways: Configuration, I disable the LAN_GW which is not needed anymore
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#### Configure DHCP on both instance
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In both VM, in - # Services: Dnsmasq DNS & DHCP, I enable the service
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#### Enable DHCP on VM
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Enable mdns repeate
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In - # Services: mDNS Repeater, I enable and enable CARP Failover
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reboot needed for CARP
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#### Replicate configuration on VM
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In - # System: High Availability: Status, Synchronize and reconfigure all
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In my rack, I
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Unplug OPNsense box WAN
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Plug WAN on port 15
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## Verify
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Ping VIP OK
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Vérifier interface OK
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tests locaux (ssh, ping) OK
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Basic (dhcp, dns, internet)
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DHCP OK
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DNS NOK -> Restart Unbound service
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Internet OK
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Firewall -> Need some not critical opening
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All sites -> OK
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mDNS (chromecast) -> OK
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VPN -> OK
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TV -> OK
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speedtest -> -15% bandwidth (to confirm another time)
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Vérifier tous les devices -> OK
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DNS blocklist OK
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Check load (ram, cpu) -> OK
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#### Failover
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In - # System: High Availability: Status, Synchronize and reconfigure all
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In
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@@ -15,4 +15,14 @@ I'm ==testing==
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🚀💡🔧🔁⚙️📝📌✅⚠️🍒❌ℹ️⌛🚨🎉📖🔥😈😎
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[post]({{< ref "post/0-template" >}})
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[post]({{< ref "post/0-template" >}})
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List:
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- One
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- Two
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- Three
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Checklist:
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- [ ] Not Checked
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- [x] Checked
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