Troubleshooting CloudStack Virtual Routers

Cloudstack’s multi-tenant virtualised networking model is one of its strongest features. Abstracting complex networking concepts and allowing simple UI/API configuration of networks is something loved by users of Cloudstack clouds. But, as an operator/administrator of a Cloudstack cloud you’ll almost certainly have had to troubleshoot network  problems  – and that means troubleshooting CloudStack’s Virtual Routers […]

European Cloud Infrastructure and CloudStack User Day Roundup

Blog by Ivet Petrova, StorPool. On June 13th, StorPool had the honour and privilege to host and organize the European Cloud Infrastructure and CloudStack User Group together with its partner ShapeBlue. The event was a get together of the local IT infrastructure experts and CloudStack users. Main focus were talks presenting best practices and useful information […]

CloudStack European User Group roundup – London, December 2018

There was a definite feel of Christmas in the air in London as we made our way to last Thursday’s (December 13) winter meetup of the Cloudstack European User Group (CSEUG), and that only increased as we arrived at the BT Centre near St. Paul’s and saw the big Christmas tree in reception! A great […]

Openvswitch with DPDK support on CloudStack

Introduction This blog describes a new feature to be introduced in the CloudStack 4.12 release (already in the current master branch of the CloudStack repository). This feature will provide support for the Data Plane Development Kit (DPDK) in conjunction with Open vSwitch (OVS) for guest VMs and is targeted at the KVM hypervisor. The Data […]

Networking KVM for CloudStack – a 2018 revisit for CentOS7 and Ubuntu 18.04

Introduction We published the original blog post on KVM networking in 2016 – but in the meantime we have moved on a generation in CentOS and Ubuntu operating systems, and some of the original information is therefore out of date. In this revisit of the original blog post we cover new configuration options for CentOS 7.x […]

Working towards CloudStack zero downtime upgrades

As most people know, Apache CloudStack has gained a reputation as a solid, low maintenance dependable cloud orchestration platform. That’s why in last year’s Gartner Magic Quadrant so many leaders and challengers were organisations underpinning their services with Apache CloudStack. However, version upgrades – whilst being much simpler than many competing technologies – have always been […]

A Beginners Guide To CloudStack Networking

Many people find it challenging to get started with CloudStack’s networking. There are some basic concepts, which although not overly complicated, are not especially obvious either. This blog will try to explain these underlying concepts, in order to make getting started with CloudStack networking models much easier.

ShapeBlue Security Advisory – DNSMasq Vulnerabilities

A number of security flaws were recently found in the DNSMasq tool. This tool is used by many systems to provide DNS and DHCP services, including by the CloudStack System VMs.
This advisory explains their affect on CloudStack and how to patch CloudStack against these flaws.

VPC to VPC VPN configuration in CloudStack

Introduction Configuring connectivity between CloudStack hosted VPCs can be done by either using private gateways – which has to be configured by CloudStack root administrators to use dedicated network segments – or by using VPC-to-VPC connections, which can be configured by the CloudStack end user without admin input. In this blog post we will cover how to […]