OpenShift 4: Query Prometheus API for Firing Alert
Introduction Prometheus is a robust, efficient and cloud native monitoring tools, graduated from CNCF incubator. It was part of the OpenShift since OpenShift 3.11. In...
Author: Muhammad Aizuddin Zali
OpenShift 4.5 KNI Labs (Step-by-step)
KNI, Kubernetes Native Infrastructure is one of the method deploying OpenShift baremetal with IPI (Installer Provided Infrastructure), yes you read it right, a baremetal automated...
OpenShift 4.5 : NooBaa S3 Bucket for internal image registry
Image registry storage is best and recommended to run on S3 storage endpoint(then filesystem storage, then block). In this blog context, we are going to...
OpenShift 4: OSSM Jaeger`s External ElasticSearch
One of the features provided by Red Hat OpenShift Service Mesh(OSSM) is tracing capability. This capability is provided by Jaeger, an OpenTracing compliant component. In...
OpenShift 4: EgressIP for egress(outbound) connection
Introduction By default, all namespace egress networking will be using host IP where the pod sits as SNAT rule, similar to how our home router...
OpenShift 4: AlertManager + Slack Configuration
Objective Sending alert to Slack and defined proper channel for each alert type. Pre-Requisites: Three channels created in slack #watchdog #clusterwatch Incoming webhook configured for...
OpenShift 4: Installation Bonding Setup
Objective Setting up 2 x LACP bonding using boot params options. For guidance on the boot params available look here. (Cover image : https://unsplash.com/@thomasjsn) 2...
OpenShift 4: DHCPD High Availability
Objective One of the support component to install OpenShift 4 is the DHCP. We need to ensure this DHCP is resilient and highly available hence...
OpenShift 4: Custom API URL Endpoint
Objective On top of the standard api.<cluster_name>.<subdomain> as external API endpoint, we are going to serve this endpoint using custom URL as below: Custom API...
Certificate & TLS: Becoming Custom(or Own) Root Certificate Authority
Objective Becoming organization/private PKI provider Shared rootCA certificate to be trusted by client. Creating a Root Certificate Authority 1. Create your root CA RSA key...
