Chapter 1. Postinstallation configuration overview
Chapter 1. Postinstallation configuration overview After installing OpenShift Container Platform, a cluster administrator can configure and customize the following components: Machine Bare metal Cluster Node Network Storage Users Alerts and notifications 1.1. Post-installation configuration tasks You can perform the post-installation configuration tasks to configure your environment to meet your need. The following lists details these configurations: Configure operating system features : The Machine Config Operator (MCO) manages MachineConfig objects. By using the MCO, you can configure nodes and custom resources. Configure cluster features . You can modify the following features of an OpenShift Container Platform cluster: Image registry Networking configuration Image build behavior Identity provider The etcd configuration Machine set creation to handle the workloads Cloud provider credential management Configuring a private cluster : By default, the installation program provisions OpenShift Container Platform by using a publicly accessible DNS and endpoints. To make your cluster accessible only from within an internal network, configure the following components to make them private: DNS Ingress Controller API server Perform node operations : By default, OpenShift Container Platform uses Red Hat Enterprise Linux CoreOS (RHCOS) compute machines. You can perform the following node operations: Add and remove compute machines. Add and remove taints and tolerations. Configure the maximum number of pods per node. Enable Device Manager. Configure users : OAuth access tokens allow users to authenticate themselves to the API. You can configure OAuth to perform the following tasks: Specify an identity provider Use role-based access control to define and supply permissions to users Install an Operator from OperatorHub Configuring alert notifications : By default, firing alerts are displayed on the Alerting UI of the web console. You can also configure OpenShift Container Platform to send alert notifications to external systems.