VM Example - CloudStack

Enable sending of arbitrary configuration data to VMs | CloudStack Feature First Look

This feature allows the sending of arbitrary additional VM configurations to user VMs on CloudStack and is supported by KVM, XenServer and VMware hypervisors. The administrator enables or disables this feature by the global configuration  ‘enable.additional.vm.configuration’ which is disabled by default. To add a second layer of security, the administrator must explicitly set a comma-separated list of allowed VM additional configurations per hypervisor that users can use. This is achieved by the following global settings: ‘allow.additional.vm.configuration.list.kvm’ ‘allow.additional.vm.configuration.list.vmware’ ‘allow.additional.vm.configuration.list.xen’ This means that users can send additional configuration to VMs on start or update, only if: The administrator has set the feature […]

host maintenance - CloudStack

Hosts stuck in PrepareForMaintenance state | CloudStack Feature First Look

The process of setting a host into maintenance in CloudStack requires an administrator to ask for ‘prepare for maintenance’, either via API or through the UI on a host. When CloudStack receives the request to prepare the host for maintenance, the host state is set to ‘PrepareForMaintenance’ and any VM running on the host start to be migrated away. Ideally, the process lasts until there are no VMs left running on the host and it can safely enter Maintenance mode. However, in case of failure with these VM migrations, the host can stay indefinitely in the ‘PrepareForMaintenance’ state. This does […]

VR Health Checks - heart check | CloudStack Feature First Look

VR Health Checks | CloudStack Feature First Look

This feature introduces an easy and integrated way to check the health of virtual routers (VRs) within CloudStack. With the help of these checks, administrators can monitor VRs and take any necessary action when a failure is reported. These health checks can be basic or advanced. Basic health checks include: Connectivity from the management server to the virtual router Connectivity from a virtual router to its interfaces’ gateways Free disk space on virtual router CPU and memory usage VR Sanity checks: SSH/dnsmasq/haproxy/httpd services running Advanced health checks include: DHCP / DNS configuration matches management server DB IPtables port forwarding rules match […]

Direct Download png | CloudStack Feature First Look

Improvements for Template Direct Download | CloudStack Feature First Look

For some time now, CloudStack has supported the direct download of user templates for the KVM hypervisor. This basically allows user to register a template (whilst bypassing secondary storage) and directly download and install it to primary storage where it can be used for deployment: With CloudStack 4.14, this has been improved by adding direct download support for system VM templates. Previously, administrators could register new system VM templates with the direct download flag, but this flag was not honoured and there would be a failure during system VM deployment. Now, an administrator can register a new system VM template […]

Cloud Management - CloudStack

VM Ingestion | CloudStack Feature First Look

Apache CloudStack has proved itself to be a great cloud orchestrator and is probably one of the best open-source platforms available for deployment of new IaaS environments. However, until now there has been little or no support for importing an existing cloud environment with all its resources and entities into CloudStack. This is going to change with new release CloudStack 4.14 which will include a new feature allowing the import of existing virtual machines (VMs) into a cloud environment. With CloudStack 4.14 new APIs have been added to list and import unmanaged VMs. Currently, this support is only available for […]

board electronics computer data processing | Layer 2 Networks in CloudStack

Layer 2 Networks in CloudStack

Layer 2 (also known as the Data Link Layer) is the second in the seven-layer OSI reference model for network protocol design, and is equivalent to the link layer (the lowest layer) in the TCP/IP network model. Layer 2 is the network layer used to transfer data between adjacent network nodes in a wide area network, or between nodes on the same local area network. We have recently introduced a new Layer 2 network offering in CloudStack. This enables all network services to be provided from network equipment external to CloudStack. As a result, the Virtual Router is not required, […]

Cloud Concept | Inter-VPC connectivity in CloudStack

CloudStack Primary Storage

Paul Angus, Cloud Architect at ShapeBlue takes an interesting look at how to separate Cloudstack’s management traffic from its primary storage traffic. I recently  looked at physical networking in a CloudStack environment and alluded to the fact that you cannot separate primary storage traffic from management traffic from CloudStack, but that it is still possible. In this article I will discuss why this is and how to do it.  In the beginning, there was primary storage The first thing to understand is the process of provisioning primary storage. When you create a primary storage pool for any given cluster, the […]

CloudStack 4.3 – a first review

The latest release of Apache CloudStack has arrived with a raft of exciting new features. In this early review, Giles Sirett, CEO of ShapeBlue looks at the significance of some of these features and why they help to continue to position CloudStack as the IaaS orchestration platform of choice for many service providers and enterprises alike. Version 4.3 of CloudStack has been some time coming, the official release was earlier today. I count 10 headline new features, 12 improvements (not quite big enough to be called a feature) and over 160 existing issues resolved. Hyper – V Support The first, […]

Citrix CloudPlatform 4.2 – a first review

With much fanfare, Citrix yesterday formally announced the 4.2 release of their IaaS cloud orchestration technology CloudPlatform. In parallel, the Apache Software Foundation are about to announce version 4.2 of Cloudstack. In this article, Giles Sirett CEO of ShapeBlue gives his first impressions on CloudPlatform 4.2   At ShapeBlue, we’ve had both of these technologies on the bench for some time now and wanted to share our first impressions. Built on open-source success Most people are aware that CloudPlatform is based on Apache CloudStack (“powered by” is the tagline that lets the copyright lawyers sleep at night) . This came […]

CloudStack 101

What Is Apache CloudStack™ Apache CloudStack™ is an open source software platform that pools computing resources to build Public, Private, and Hybrid Infrastructure as a Service (IaaS) Clouds. Apache CloudStack manages the Network, Storage, and Compute nodes that make up a Cloud infrastructure. The Story So Far. CloudStack started life as VMOps, a company founded in 2008 with product development spearheaded by Sheng Liang, who developed the Java Virtual Machine at Sun.  Whilst early versions were very much focused on the Xen Hypervisor, the team realised the benefits of multi-hypervisor support.  In early 2010, the company achieved a massive marketing […]