Look back at our Pushing Keystone over the Edge presentation from the OpenStack Summit. Many of the points we make are problems faced by any application trying to scale across multiple datacenters. Cassandra is a database designed to deal with this level of scale. So Cassandra may well be a better choice than MySQL or other RDBMS as a datastore to Keystone. What would it take to enable Cassandra support for Keystone?
Continue readingTheJulia was kind enough to update the docs for Ironic to show me how to include IPMI information when creating nodes.
Continue reading“I can do any thing. I can’t do everything.”
The sheer number of projects and problem domains covered by OpenStack was overwhelming. I never learned several of the other projects under the big tent. One project that is getting relevant to my day job is Ironic, the bare metal provisioning service. Here are my notes from spelunking the code.
Continue readingI finally got a right-sized flavor for an OpenShift deployment: 25 GB Disk, 4 VCPU, 16 GB Ram. With that, I tore down the old cluster and tried to redeploy. Right now, the deploy is failing at the stage of the controller nodes querying the API port. What is going on?
Read moreThe OpenShift installer is fairly specific in what it requires, and will not install into a virtual machine that does not have sufficient resources. These limits are:
Now that I can run the TripleO version of Keystone via podman, I want to try running it in OpenShift.
Continue readingMy recent forays into running containerized Keystone images have been based on a Centos base image with RPMs installed on top of it. But TripleO does not run this way; it runs via containers. Some notes as I look into them.
Continue readingBefore I can run Keystone in a container, I need to initialize the database. This is as true for running in Kubernetes as it was using podman. Here’s how I got keystone-db-init to work.
Continue readingStep 3 of the 12 Factor app is to store config in the environment. For Keystone, the set of configuration options is controlled by the keystone.conf file. In an earlier attempt at containerizing the scripts used to configure Keystone, I had passed an environment variable in to the script that would then be written to the configuration file. I realize now that I want the whole keystone.conf external to the application. This allow me to set any of the configuration options without changing the code in the container. More importantly, it allows me to make the configuration information immutable inside the container, so that the applications cannot be hacked to change their own configuration options.
Continue readingBuildah is a valuable tool in the container ecosystem. As an effort to get more familiar with it, and to finally get my hand-rolled version of Keystone to deploy on Kubernetes, I decided to work through building a couple of Keystone based containers with Buildah.
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