Update only kubernetes under OKD ( OpenShift ) - openshift

Latest OKD (OpenShift) version is 3.11 and it is using an older version ( 1.11 ) of Kubernetes. Is it possible to update underlying Kubernetes version to latest without upgrading ( It is not possible ) or effecting the OKD ?

Related

Does OKD version 4.6 support AWS KMS storage encryption?

We are having exactly the same issue as mentioned on this link https://access.redhat.com/solutions/4827341 but we want to use OKD version probably the latest one which is OKD 4.6. My question is does it support KMS storage encryption in AWS?
While installing openshift OKD cluster on unencrypted disk is not the solution for us so does new OKD 4.6 version support KMS encryption to encrypt disk? As far as I know the redhat document says "This RFE was accomplished for OpenShift Container Platform 4.5" which means it should support KMS encryption from onward OCP version 4.5 and I think would be same for OKD version 4.5. I may be wrong please correct me.
Thanks
Well, the feature is in the OpenShift 4.5 Release Notes:
You can now define a KMS key to encrypt EBS instance volumes. This is useful if you have explicit compliance and security guidelines when deploying to AWS. The KMS key can be configured in the install-config.yaml file by setting the optional kmsKeyARN field. For example:
apiVersion: v1
baseDomain: example.com
compute:
- architecture: amd64
hyperthreading: Enabled
name: worker
platform:
aws:
rootVolume:
kmsKeyARN: arn:aws:kms:us-east-2:563456982459:key/4f5265b4-16f7-xxxx-xxxx-xxxxxxxxxxxx
...
So yes, I would guess that the same can be used in OKD 4.6.

Can OKD (OpenShift Origin) be installed on RHEL 8?

Can OpenShift Origin (OKD) be installed on RHEL 8? The documentation states minimal RHEL 7.4 or later: https://docs.okd.io/latest/install/prerequisites.html
However, RHEL 8 seems to be a major rework going on par with the commercial OpenShift 4. So I would assume the best version of RHEL to install OKD on is RHEL 7.6. Am I correct?
OpenShift v3.11 would install on RHEL v7.7 and also on v8.0. I have installed on both of these release levels of RHEL. On RHEL v8.0 - the container technology has moved to podman, buildah, UBI and related - still you can install docker ce and get OpenShift up and running. Thanks.

can't install mysql on openshift 4 online realse

I am trying to install mysql image on openshift 4 online using developer catalog , unfortunately , no mysql image on the catalog's list.Where can i find the mysql image and how can i install it?
This is for openshift 4 online release,the process was simple with openshift 3 online .

OpenShift CLI: oc vs rhc?

What is the difference between rhc and oc CLI-tools?
As I see, they do almost the same:
oc:
The OpenShift CLI exposes commands for managing your applications, as
well as lower level tools to interact with each component of your
system.
rhc does the same, no?
What should I use to manage my containers on OpenShift platform?
The rhc tool is for OpenShift 2. The oc tool is for OpenShift 3. They are completely different versions of the package. So you need to know which version of OpenShift you are using. If you are using the existing OpenShift Online version it is version 2. If you are using the new OpenShift Online developer preview, it is version 3.

OpenShift and Restheart

I have to use Restheart APIs in an OpenShift application.
I tried to execute restheart.jar as suggested in the installation and use guide, but it produced an error, due to the difference between the installed java version (openjdk 7) and the required one (oracle java 8).
Is there any trick to get Restheart APIs working in an OpenShift app?
OpenShift does not support JDK 8 but that doesn’t mean you can’t run Java 8 applications.
You can use a DIY cartridge and install your own JDK version.