infra | cloud | opensource
INTRODUCTION Just like an RPM signing, container image singing can be used to verify authenticity of a container image created by users/developers throughout image life-cycle. The concept of verification are similar to RPM gpgcheck...
by Muhammad Aizuddin Zali · Published February 14, 2019 · Last modified February 19, 2019
Introduction Enforcing strong and modern cipher is critical to ensure our deployment are well protected from old and weak cipher. Enforcing only strong and modern cipher will significantly reduced or not too bold to...
Labeling an object in OpenShift or Kubernetes is an awesome method to organize, group, or select API objects. Labels can be used to group arbitrarily-related objects; for example, all of the object like pods,...
Automation / Cloud / Kubernetes / OpenShift
by Gini Gangadharan · Published January 24, 2019 · Last modified January 25, 2019
There might be situations where you have already deleted pods (or already removed dc aka deployment configuration) but pods are stuck in Terminating state. There are few suggestions if you google around (Red Hat...
Ansible / Automation / Infrastructre & Hardware / Online Events / OpenShift / Technical Events
by Gini Gangadharan · Published January 23, 2019
Join this Red Hat webinar to see how to use Jenkins pipelines to deploy simple applications using Ansible Tower. Here see the quick overview of agenda. Configure and create a new Ansible Tower project....
There are several cases a PV (PhysicalVolume) appear as Failed in OpenShift or Kubernetes cluster. Once of the reason is wrong ClaimRef by which PV will mark as claimed but actually not in use....
Automation / Cloud / Infrastructre & Hardware / OpenShift
by Gini Gangadharan · Published November 7, 2018
As we know OpenShift clusters are bundled with multiple compute nodes, master nodes, infra nodes etc, it’s not a big deal to manage node maintenance for OS patching kind of activities. But we need...
Automation / Cloud / Infrastructre & Hardware / OpenShift
by Gini Gangadharan · Published November 5, 2018
Since OCP 3.11 is available now, you may refer below documents for OpenShift Container Platform 3.11 Installation on different infrastructure or platforms. Those are very quick documents but already included all details including installation...
Automation / Cloud / Infrastructre & Hardware / OpenShift
by Gini Gangadharan · Published November 1, 2018 · Last modified November 2, 2018
Usually application owner or project owner will specify the quota settings (Memory and CPU) during project creation. But sometimes, they realize that the requested resource is not enough to run their applications. Usually we...
Automation / Cloud / Infrastructre & Hardware / OpenShift
by Gini Gangadharan · Published October 4, 2018
When we have issue with container and we are not sure which pod the container belongs to; we can find the pods details as below. Use case : we have some zombie process running...
