Daein Park – Medium

Daein Park

Introduction: What is the Cluster Etcd Operator ?

Aforementioned the etcd at my previous post is managed by Cluster Etcd Operator in the OpenShift v4. I’d like to show you what the Cluster…

5 min readDec 7, 2021

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Introduction: What is the Cluster Etcd Operator ?

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Daein Park

Introduction: What is the Etcd ?

This article is for the Etcd introduction. I will show you what the Etcd is in a glance.

5 min readNov 30, 2021

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Introduction: What is the Etcd ?

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Daein Park

How to trace network traffic of the OpenShift and Kubernetes in AWS

I will walk you through how to trace network traffic and how to capture the traffic in AWS for OpenShift and Kubernetes here.

3 min readApr 8, 2021

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How to trace network traffic of the OpenShift and Kubernetes in AWS

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Daein Park

Multus CNI using Ipvlan plug-in for multiple networks in OpenShift

In this article, I will show you how to configure the multiple networks in OpenShift using the Multus CNI based on ipvlan plug-in with…

2 min readFeb 16, 2021

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Multus CNI using Ipvlan plug-in for multiple networks in OpenShift

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Daein Park

Restricted network bare metal UPI installation on OpenShift v4.6

OpenShift v4.6 just has been released, it’s a first version supported Extended Update Support(EUS) on OpenShift. I walk you through bare…

6 min readNov 22, 2020

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Restricted network bare metal UPI installation on OpenShift v4.6

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Daein Park

How to restore lost one master on OCP4.6

This test is a kind of hands-on review for the Replacing an unhealthy etcd member in the docs. It show you the progress of the lost one…

3 min readNov 10, 2020

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How to restore lost one master on OCP4.6

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Daein Park

Review about the automatic expired certificates on OpenShift v4.6

It is a simple test evidence about OpenShift v4.6 automatic certification procedures, further information is here, Recovering from expired…

3 min readNov 2, 2020

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Daein Park

How to appropriately configure readiness/liveness probes for suppressing lost requests ?

I’d like to show you simple demonstration of the pod rolling update through two patterns. First pattern is configured probes based on…

4 min readNov 2, 2020

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How to appropriately configure readiness/liveness probes for suppressing lost requests ?

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Daein Park

Review SCC(Security Context Constraints) based on RBAC on OpenShift

As of OpenShift v4.5, SCC(Security Context Constraints) is managed by RBAC, so I review how to work the SCC with RBAC(Role Based Access…

4 min readOct 30, 2020

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Daein Park

How to configure AWS Network Load Balancer for an Ingress Controller on OpenShift v4

As of OpenShift 4.6, we can enable AWS Network Load Balancer(NLB) for an Ingress Controller. Until now only NLB was configured for Control…

3 min readOct 28, 2020

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Daein Park

Daein Park

Hi, I’m Daein working at Red Hat. Just do something fun :) Nothing happens, if you do nothing. #OpenShift #Kubernetes #Containers #Linux #OpenSource

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