OpenShift Morsels: oc rsh – exploring the pod
On Day #7 lets see how to explore the contents of the container. How does ssh work in the containerized world?
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OpenShift
OpenShift Morsels: rsync – getting files from and to a pod
On Day #6 lets step away for a moment from troubleshooting the pods and have a look at getting files from pods.
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OpenShift Morsels: troubleshooting with logs
On Day #5 a small entry about getting logs of a pod.
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OpenShift Morsels: troubleshooting with events
On Day #4 lets have a look at the events. They let you learn about changes taking place in your project in relation to OpenShift.
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OpenShift Morsels: labels vs annotations
Day #3 - When describing pods and other resources, you can see two sets of key value pairs. One is called Labels and the other Annotations.
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OpenShift Morsels: Troubleshooting pods with oc describe
Day #2 Still debugging your pod? Sometimes help comes from most unexpected place.
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OpenShift Morsels: Troubleshooting pods with oc debug
Day #1 lets talk about troubleshooting pods. Since several versions of OpenShift Client you can use a very simple and powerful command to check what is wrong with your application. (more…)
OpenShift CLI morsels: tagging images
After building a docker image, it is added to the Image Stream in OpenShift. It can be identified by a unique ID and/or a tag. Tags can be added to any existing Image Stream.
Discovering information about tags
After listing image streams, you can see a short list of tags. In my case the [crayon-69e774c1a270a810702425-i/] image stream has image tagged as [crayon-69e774c1a2712454164103-i/] .
[crayon-69e774c1a2715602531309/]
You can retrieve information about all existing tags using oc describe
[crayon-69e774c1a2717270024934/]
Tagging images
New Image Stream can be created immediately based on the existing tag. Below you can see creation of [crayon-69e774c1a2719593237992-i/] IS with [crayon-69e774c1a271b321331757-i/] tag based on [crayon-69e774c1a271d141414160-i/] image.
[crayon-6...
OpenShift CLI morsels: Building application from private git repository
Having a public repository is a great thing, but not always possible or useful. OpenShift supports git access using ssh private keys and password. Below you can find the few steps on how you can use basic authentication
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OpenShift: working with multiple accounts, projects and servers
I often find myself switching between projects or using a service account to test something. To work with multiple projects I usually create an alias per namespace to quickly execute commands.
[crayon-69e774c1a2e53516426226/]
To use multiple accounts similar aliases can be created
[crayon-69e774c1a2e5b594290493/]
To work with other clusters, you will can add --server besides the token parameter.
[crayon-69e774c1a2e5d401895610/]
The more contexts, the more fun to manage and store them. Instead of doing it in shell files it might be easier to learn about [crayon-69e774c1a2e5f955626501-i/] file.
Kubernetes config file
It contains information used during [crayon-69e774c1a2e61744011902-i/] . There are three main components: users, clusters and contexts. You can configure them individua...