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There are many different ways to bring up a Kubernetes cluster, but the simplest option I’ve found for getting up and running with a single or multi-node cluster involves a tool called kubeadm, for which the Kubernetes project maintains good installation and configuration docs. These docs include directions for hosts running Debian/Ubuntu, RHEL/CentOS and Container […]
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I just came across this Little Guide to Kubernetes Install Options, which covers a few options I’ve heard of, and a few options I haven’t heard of. It doesn’t mention the main way that I deploy Kubernetes, which is through the Ansible scripts from the kubernetes/contrib repository. The post does point to another Ansible-based option, […]
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A month or so ago I jotted down some notes on using ansible to set up a kubernetes cluster on atomic hosts with kubernetes running in regular docker containers and flannel and etcd running in system containers. I’ve been working on turning my kube containers into system containers. Three reasons jump to mind: I want […]
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A few of the projects I work with use static websites based on middleman, which you can run locally to see how your edits, or those of others, will look on the live site when they’re merged. Each of these sites defaults to port 4567 when running locally, so if I’m running more than one […]
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Version 1.4 of Kubernetes, the open-source system for automating deployment, scaling, and management of containerized applications, included an awesome new tool for bootstrapping clusters: kubeadm. Using kubeadm is as simple as installing the tool on a set of servers, running kubeadm init to initialize a master for the cluster, and running kubeadm join on some […]
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The atomic hosts from CentOS and Fedora earn their “atomic” namesake by providing for atomic, image-based system updates via rpm-ostree, and atomic, image-based application updates via docker containers. This “system” vs “application” division isn’t set in stone, however. There’s room for system components to move across from the somewhat rigid world of ostree commits to […]
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