Questions tagged [openshift]

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OpenShift - Docker Rate Limit and Regular Pulls

I am learning how to use OpenShift but I have a problem with my cluster that I haven't found an answer to. Every hour one of the nodes from the cluster makes about 8 pull requests to Docker Hub. I can'...
0 votes
2 answers
81 views

kubernetes: how to check pod IP range allocated to node

Every node in a kubernetes cluster has a dedicated range of IP addresses that it can allocate to the pods. How can one check what that IP range is?
0 votes
0 answers
508 views

Reset kubeadmin password in OKD 4.7

I tried to find password in .openshift_install.log file and I found something but it didn't work. I tried to oc get secrets kubeadmin -n kube-system -ojsonpath='{.data.kubeadmin}' | base64 --decode &...
-1 votes
1 answer
17 views

Where do I find detailed instructions on installing the community version of Openshift?

Most of the instructions online are either for the full/trial version of Openshift. I was looking for recent instructions and downloads that would allow me to install the Openshift community version.
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Remove default docker registry and put prefix to pull images in Openshift 4.7

I know we can add registry name before image name. like docker pull my_registry/myimage:latest. But by default it looks in docker hub. Is there anyway to remove docker hub from default or add a prefix ...
0 votes
0 answers
115 views

Change default docker registry in Openshift 4.7

How can I change default docker image registry in Openshift ? I already modified /etc/containers/registries.conf in workers and master nodes and put something like this but it didn't work. [[registry]]...
1 vote
1 answer
104 views

Is there an "initial memory allocation" different from the "limit" in Openshift/Kubernetes?

In java, you have min heap space (-Xms) and max heap space (-Xmx). Min heap space is allocated to the JVM from start, "max heap space" is the limit where the JVM will say "out of heap ...
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0 votes
2 answers
1k views

How to enable local image registry on OpenShift Single Node Cluster installation

I've recently completed an installation of a Single Node Cluster using OpenShift 4 but I'm running into issues when trying to spin up some of the example container / projects they have available. I ...
0 votes
1 answer
3k views

how openshift service loadbalance between pods?

This is a pretty basic question so I figure I must be missing something obvious, Does openshift service uses round-robin to load balance between pods? Or does it forward requests to the pod with the ...
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0 answers
44 views

OpenShift/OKD cluster - Use with external/outside domain

I have an OpenShift/OKD cluster already up and running and using the following domain... certain.domain Within this domain I have these (among others) features working... console-openshift-console....
1 vote
0 answers
2k views

UPI/Bare Metal - The master node cannot finish the installation ("config/master", "timeout awaiting response headers"/"EOF")

Simple question, but so far very difficult to answer... =-[ I am trying to deploy OpenShift (OKD) 4.5 or 4.7 as directed here Guide: Installing an OKD 4.5 Cluster. Look at the "Starting the ...
2 votes
3 answers
737 views

Any point in running containers as non-root on openshift

The openshift documentation reads : To further protect RHCOS systems in OpenShift Container Platform clusters, most containers, except those managing or monitoring the host system itself, should run ...
-1 votes
1 answer
329 views

OpenShift internal docker registry inaccessible

I am trying to connect with the internal docker registry of an openshift cluster with /bin/docker login -u user -p password` `oc get svc -n default | grep docker-registry `:5000 Getting the following ...
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1 vote
0 answers
58 views

Open shift internal registry lost connection with the cluster

As a result getting image pull error while submitting the deployment to the kube API. Even the docker registry pod IP is in connection but VIRTUAL IP of docker registry lost connection with the ...
0 votes
0 answers
125 views

Openshift Route - Cookie specification - Istio Routing

I have requirement to pass cookie or headers in openshift route to istio virtual service and decide the traffic routing based on cookie or header passed from route to virtualservice. Please share ...
0 votes
1 answer
784 views

Is there a way to copy an Openshift project?

I want to have an entire copy of my Openshift project (with all builds, pods, secrets, etc.) for testing purposes (second independent testing environment). Is there a way to copy a project?
1 vote
1 answer
358 views

401 Unauthorized when trying to log on to Openshift 4.5 with Google identity provider

I recently deployed a version 4.5 OKD cluster and everything seems fine, but I can't get the Google identity provider to work for signing in. I followed the instructions here, but with no success. ...
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5 votes
1 answer
5k views

What is the difference between objects project and namespace in Openshift 4.x

In openshift 4.x, you have an API for project which seems to be totally similar to namespace in the sense that when you create a project there a namespace created and the other way around. I know ...