From December 2011 until December 2016, my professional life was driven by OpenStack Keystone development. As I’ve made an effort to diversify myself a bit since then, I’ve also had the opportunity to reflect on our approach, and perhaps see somethings I would like to do differently in the future.
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While trying to launch kubevirt containers in OpenShift, I continually tripped over problems regarding authorization.
In my last post on the subject, I mentioned that I was able to use kubectl to get the same information as oc describe clusterPolicy. Here are some more details.
Last time I walked through the process of merging two sets of Kubernetest client configurations into one. For more ephemeral data, you might not want to munge it all into your main configuration. The KUBECONFIG environment variables lets you specify muiltiple configuration files and merge them into a single set of configuration data.
I have two distinct Kubernetes clusters I work with on a daily basis. One is a local vagrant bases set of VM built by the Kubevirt code base. The other is a “baremetal” install of OpenShift Origin on a pair of Fedora workstation in my office. I want to be able to switch back and forth between them.
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After attending in on a helm based lab at the OpenStack summit, I decided I wanted to try it out for myself on my OpenShift cluster.
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OK, since I did it wrong last time, I’m going to try creating an user in OpenShift, and grant that user permissions to do various things.Â
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Once I got the Ansible playbook to run, I was able to poke at the openshift setup.
The install creates a default configuration in the Ansible users home directory on the master node.
Lets say you have a RESTful Web Service. For any given URL, you might support one or more of the HTTP verbs: GET, PUT, POST, DELETE and so on. A user might wonder what they mean, and which you actually support. One way of reporting that is by using the OPTION Verb. While this is a relatively unusual verb, using it to describe a resource is a fairly well known mechanism. I want to take it one step further.
Continue readingThe JSON file format is used for marshalling data in lots of different applications. If you are new to an application, and don’t know the data, it might be hard to visually parse the JSON and understand what you are seeing. The jq command line utility can help make it easier to scope in to a section of the file. This is a starting point.
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