Currently, CloudStack allows admins to configure the dynamic scaling of CPU and RAM for the VMs using a global or zone level setting “enable.dynamic.scale.vm” and through a “Dynamically Scalable” flag in templates. However, the global or zone setting applies to all VMs in a particular region or zone and there may be virtual hardware or […]
When upgrading Apache CloudStack (ACS) to a newer version one must manually register new SystemVM templates before upgrading the packages. Failing to do so means having to roll back the database to the previous version, register the new template and start the upgrade again. We’ve developed a process (available as of CloudStack 4.16.0) to automate […]
Apache CloudStack 4.16 is the latest release of the cloud management platform from the Apache Software Foundation and is a result of months of work from the development community. 4.16 is an LTS (Long Term Support) release so will be maintained for a period of 18 months after release. As always, the release contains a […]
CloudStack administrators are currently able to add annotations/comments on hosts, domains or virtual machines. This is useful as administrators may comment on the actions taken on those entities, allowing other administrators to know why actions were taken. This new functionality (available from CloudStack version 4.16.0 onwards) extends the scope of the comments feature to users, […]
With 16,000+ participants from 111 countries and 715 open-source organizations participating, Google Summer of Code is one of the most popular programs which helps students enter the technology world and gain new skills. GSoC pairs students with mentors from participating open-source organizations, allowing students to face the real world of software development and coding. For […]
There is currently enormous market demand for Infrastructure as a Service (IaaS), with organisations looking for the right solution to host their applications and workloads, build a high-performing test/dev environment or deploy a hybrid cloud solution. Others, like telcos and MSPs, need to offer a full range of services to their customers, and the cloud […]
A lot of work has gone into the CloudStack UI recently, and it is now a modern, role-based UI that not only gives a fresh look to CloudStack but also makes development and customisation much easier. In this blog, I provide guidance on how to customise the UI, and have classified customisation into two categories […]
The latest version of XCP-ng – the opensource hypervisor based on XenServer – XCP-ng 8.2 was released in November 2020, and is the first long term support (LTS) version. As such it will receive support and updates for the next 5 years compared to only a year for a standard XCP release. The hypervisor is […]
When a network is created in CloudStack, it is by default not provisioned until the first VM is deployed on that network, at which point a a VLAN ID is assigned. Until then, the network exists only as a database entry. If you wanted to create and provision a network without deploying any VMs, you […]
Migration of virtual machines between physical hosts or clusters is essential for cloud operators, allowing them to perform maintenance with little or no downtime, or balance compute and storage resources when necessary. CloudStack supports both live and cold migration (if supported by the hypervisor), and most hypervisors allow VM and volume migration in some form […]
