System VMs (Secondary Storage VM and Console Proxy VM) and Virtual Routers play key role in Apache CloudStack. If user want to apply a change on the system vms and VRs, they do not need to wait for next release with the fix, they can patch the VMs. This article describes the steps how to apply a patch to a system vm or a VR.

Recently I was asked by CloudStack users how to apply a patch (or patches) to their environments. It is very useful when the patch fixes a critical issue for them. So, this article describes the steps how to compile Apache CloudStack project using Ubuntu 22.04 docker container, and how to apply the patch to management servers and hosts.

The article CloudStack - Create Windows 11 VM instance on Ubuntu 22.04 introduces how to create a VM with vTPM and UEFI on Ubuntu hosts. There are some changes with it, see CloudStack - Create Windows 11 VM instance on Ubuntu (Update 2025.03).

This blog introduces how to create Window 11 VMs on RHEL/RockyLinux/AlmaLinux step by step. Rocky 8.6 will be used as an example.

In the article CloudStack - Create Windows 11 VM instance on Ubuntu 22.04 I have introduced how to create a Windows 11 VM instance on Ubuntu 22.04.

In the past year, there are some related changes. This article introduces what has been changed and what we need to update. Here we go !

This blog post introduces how to configure Destination NAT (DNAT, or Static NAT) and port forwarding in a Linux router, using iptables.