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.
OpenShift Origin Default Auth
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Installing OpenShift Origin via Ansible on Fedora 25
While many people referred me to run one of the virtualized setups of OpenShift, I wanted something on baremetal in order to eventually test out KubeVirt. Just running
oc cluster up
As some people suggested did not work, as it assumes prerequisites are properly set up; the docker registry was one that I tripped over. So, I decided to give openshift-ansible a test run. Here are my notes.
Why Quotas are Hard
A quota is a numerical limit on a group of resources. Quotas have to be both recorded and enforced.
We had a session at the summit this past week about hierarchical quotas and, if I took anything away from it, it is that quotas are hard.
Keystone supports a project hierarchy. Here’s a sample one for you:
Using the OPTIONS Verb for RBAC
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 readingInstalling R Packages in Fedora as a user
When I was trying to run R code that required additional packages, I got the error message:
Installing packages into ‘/usr/lib64/R/library’ (as ‘lib’ is unspecified) Warning in install.packages(new.pkg, dependencies = TRUE) : 'lib = "/usr/lib64/R/library"' is not writable
Mapping from iSCSI session to device.
I was monitoring my system, so I knew the file was /dev/sdb was the new iSCSI target I was trying to turn into a file system. TO provide it, I ran:
iscsiadm -m session --print=3
And saw:
... scsi4 Channel 00 Id 0 Lun: 0 scsi4 Channel 00 Id 0 Lun: 1 Attached scsi disk sdb State: running
But what did that do? Using Strace helped me sort it a little. I worked backwards.
Installing and Running Ansible on Fedora 25
I have two machines beyond the Laptop on which I am currently typing this article. I want to manage them from my workstation using Ansible. All three machines are running Fedora 25 Workstation.
Barely Functional Keystone Deployment with Docker
My eventual goal is to deploy Keystone using Kubernetes. However, I want to understand things from the lowest level on up. Since Kubernetes will be driving Docker for my deployment, I wanted to get things working for a single node Docker deployment before I move on to Kubernetes. As such, you’ll notice I took a few short cuts. Mostly, these involve configuration changes. Since I will need to use Kubernetes for deployment and configuration, I’ll postpone doing it right until I get to that layer. With that caveat, let’s begin.
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Connecting to MariaDB with a network configuration Docker
Since the “link” directive has been deprecated, I was wondering how to connect to a mariadb instance on a non-default network when both the database and the monitor are running is separate networks. Here is what I got:
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Running GUI Applications in a container with SELinux
As I work more and more with containers, I find myself wanting to make more use of them to segregate running third party apps. Taking the lead of Jessie Frazelle I figured I would try to run the Minecraft client in a Container on Fedora 25. As expected, it was a learning experience, but I got it. Here’s the summary:
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