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Tommer Amber
Tommer Amber

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Dec 22, 2022

HowTo deploy custom-made Helm Charts on Multi Openshift Clusters w/ Advanced Cluster Management (Including in disconnected environments)

Intro Ya I know that’s a long title but I must tell you I didn’t find anything remotely close to this solution so I want everyone to be able to find it easily. I’m working in Red Hat for 3 years now and my customers are becoming really educated on microservices…

Multi Cloud

6 min read

HowTo deploy custom-made Helm Charts on Multi Openshift Clusters w/ Advanced Cluster Management…
HowTo deploy custom-made Helm Charts on Multi Openshift Clusters w/ Advanced Cluster Management…
Multi Cloud

6 min read


Dec 20, 2022

Mini HowTo — Run `oc-mirror` inside a container for importing k8s operators into internal networks

Credits first! Before you read this article I highly recommend reading my dear friend and colleague Hillay Amir two incredibly well-written articles about the new Red Hat utility tool oc-mirror. They are referenced in the next section. My added-value oc-mirror and skopeo are binaries made by Red Hat to work with imported images; The…

Automation

6 min read

Mini HowTo — Run `oc-mirror` inside a container for importing k8s operators into internal networks
Mini HowTo — Run `oc-mirror` inside a container for importing k8s operators into internal networks
Automation

6 min read


Dec 7, 2022

PoC! — Kyverno & Policy Reporter UI on Openshift 4.x

Hi everyone! I must say I’m very excited about this one; Recently I got promoted to a Cloud Security Principle Consultant at Red Hat; As part of my advancing process, I’ve been working on multiple PoCs and demos around making Kubernetes & Openshift clusters more secure. So far I’ve had multiple opportunities…

Kubernetes

3 min read

PoC! — Kyverno & Policy Reporter UI on Openshift 4.x
PoC! — Kyverno & Policy Reporter UI on Openshift 4.x
Kubernetes

3 min read


Aug 24, 2022

Build Container Images Securely on Openshift 4 using Sandboxed Containers Operator

Preface — The problem You would think that building container images is a pretty simple matter, you’ll be right, but not always secure. The build process alternatives There are two main options when it comes to building container images: Build the images inside the cluster directly (using Openshift S2i [Source-to-Image] feature) Note! This option includes building images with…

Kubernetes

3 min read

Build Container Images Securely on Openshift 4 using Sandboxed Containers Operator
Build Container Images Securely on Openshift 4 using Sandboxed Containers Operator
Kubernetes

3 min read


Jul 27, 2022

Chaos Engineering With Service Mesh (Istio)

WHAT? Just by reading the headline you probably ask “What does Service Mesh has to do with Chaos Engineering?”; …

Service Mesh

5 min read

Chaos Engineering With Service Mesh (Istio)
Chaos Engineering With Service Mesh (Istio)
Service Mesh

5 min read


Apr 30, 2022

Solution!! Avoid Kubernetes/Openshift Node Drain Failure due to active PodDisruptionBudget

Why am I even writing this? You have absolutely no idea how many times I’ve come to a customer’s site, had been asked to do something that required me to drain a worker node, or to rollout all of the nodes (like adding a new Operator to the OLM/Operator Hub), just to figure out that this…

Solutions

6 min read

Solution!! Avoid Kubernetes/Openshift Node Drain Failure due to active PodDisruptionBudget
Solution!! Avoid Kubernetes/Openshift Node Drain Failure due to active PodDisruptionBudget
Solutions

6 min read


Apr 20, 2022

Delete rebellious Namespaces that are stuck in “Terminating” mode (Openshift/Kubernetes)

Is it happen to you as well? When you just run the innocent command: oc delete project X OR kubectl delete ns X And it just does not want to go along with your wishes? …

Kubernetes

5 min read

Delete rebellious Namespaces that are stuck in “Terminating” mode (Openshift/Kubernetes)
Delete rebellious Namespaces that are stuck in “Terminating” mode (Openshift/Kubernetes)
Kubernetes

5 min read


Dec 27, 2021

Single/Multi Cloud-Native “Security Center” — RH ACS — Red Hat Advanced Cluster Security— Overview

Well well, I missed it. Schedule a blocker on my calendar, notify everyone not to bother me for the next couple of hours, put on my favorite music and just write about technology.

Security

11 min read

Multi-Cloud (Native) “Security Center” — RH ACS — Red Hat Advanced Cluster Security— Overview
Multi-Cloud (Native) “Security Center” — RH ACS — Red Hat Advanced Cluster Security— Overview
Security

11 min read


Published in Geek Culture

·Aug 31, 2021

Ansible Automation - Importing Operators into OCP OLM in Restricted Networks — Part 1

Automation is key I have to admit, I did this procedure manually way too many times; Until this one time that I forgot a command along the way, and troubleshooting it was just time (and motivation) consuming. Eventually, inevitably, an (obvious) solution will appear; So I sat myself down and wrote a “little”…

Ansible

9 min read

Ansible Automation - Importing Operators into OCP OLM in Restricted Networks — Part 1
Ansible Automation - Importing Operators into OCP OLM in Restricted Networks — Part 1
Ansible

9 min read


Aug 11, 2021

2 Mini HOW-TO guides for Prometheus on Openshift- Federation & Custom Infrastructure Alerting

Let’s start with the problem Recently as part of my work at Red Hat, a customer reached out to me and asked for my help in editing monitoring related configurations; The customer wanted to do pretty simple things like generating new alerting rules that are related to the infrastructure, fetch infrastructure-related metrics, rename/relabel some of…

Prometheus

8 min read

2 Mini HOW-TO guides for Prometheus on Openshift- Federation & Custom Infrastructure Alerting
2 Mini HOW-TO guides for Prometheus on Openshift- Federation & Custom Infrastructure Alerting
Prometheus

8 min read

Tommer Amber

Tommer Amber

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