mDNS, or multicast DNS, is a way to discover devices on your network at .local domain without any central DNS configuration (also known as ZeroConf and Bonjour, etc). Fedora Magazine […]
Part of the process when updating Red Hat’s TripleO based OpenStack is to apply the package and container updates, viaupdate run step, to the nodes in each Role (like Controller, […]
TripleO based OpenStack deployments use an OpenStack all-in-one node (undercloud) to automate the build and management of the actual cloud (overcloud) using native services such as Heat and Ironic. Roles […]
Sets of virtual machines are connected to a virtual bridges (e.g. virbr0 and virbr1) and as they are isolated, can use the same subnet range and set of IPs. However, […]
I wanted a way to quickly spin different VMs up and down on my KVM dev box, to help with testing things like OpenStack, Swift, Ceph and Kubernetes. Some of […]
CloudForms is Red Hat’s supported version of upstream ManageIQ, an infrastructure management platform. It lets you see, manage and deploy to various platforms like OpenStack, VMWare, RHEV, OpenShift and public […]
Sometimes when you’re using KVM guests to test something, perhaps like a Ceph or OpenStack Swift cluster, it can be useful to have SSD and NVMe drives. I’m not talking […]
Running something in a container using Docker or Podman is cool, but maybe you want an automated way to always run the latest container? Using the :latest tag alone does […]
OwnTracks Recorder is a web application which maps locations over time. Generally, it connects to an MQTT server and subscribes to owntracks/+ topics for any location updates, but it also […]
Fedora has switched to cgroups v2 by default now, but Docker doesn’t yet support it and so fails to start. If you want to use Docker then you need to […]