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Private cloud (OpenStack)

I build and upgrade OpenStack private clouds. Production since 2016, Mitaka onward. One environment, upgraded in place release by release, never rebuilt. The receipts are public: the upgrade trail.

Migrating from AWS EC2 or VMware is technically possible.

Minimum Equipment List

  • Three controller nodes with dual Ethernet interfaces
  • Two compute nodes with dual Ethernet interfaces
  • Two VLAN-capable MC-LAG switches
  • Distributed storage for cloud images and guest block devices (or three extra nodes for Ceph)

You also need: network connectivity, power and cooling, hardware and software lifecycle management including End-of-Life planning, monitoring and alerting.

Fault tolerance

In a production-scale deployment some components are always failed or in maintenance; the system keeps operating. With a 3x-replicated database, losing one replica is not an event. A failed MC-LAG switch member is invisible to customers. Hyper-converged without redundancy is the failure case.

Questions, quotes: info@wirt.ee. How to hire.