English Study - Red Hat OpenShift 4.18 expands cloud-native networking

# My Thoughts - User-Defined Network (UDN) - Open Virtual Networking (OVN) - Container Networking Interface (CNI) - Virtual Routing and Forwarding (VRF) #### Why? (목적 - 왜 기록하는가?) - 영어 스터디 진행 상황을 트래킹 #### How? (방법 - 어떻게 활용할까?) - 학습 인증을 통해 지속적인 추진력을 얻는다. #### What? (결과 - 무엇을 창조할까?) - 눈에 띄는 표현을 외우고 활용한다. # Summary - Speak aloud - 08:59 ## Highlights - OpenShift is Red Hat’s commercially supported Kubernetes distribution. The open-source Kubernetes technology in recent years has become the de facto standard for cloud-native deployments, running on all major cloud hyperscalers and supported by a long list of vendors, including Red Hat. With OpenShift 4.18, Red Hat is integrating a series of enhanced networking capabilities, virtualization features, and improved security mechanisms for container and VM environments. - In particular, OpenShift 4.18 integrates what Red Hat refers to as VM-friendly networking. - “VM-friendly networking refers to Kubernetes networking enhancements that provide data center networking capabilities that are common in virtual machine (VM) deployments, that are already familiar to network administrators,” said Ju Lim, senior manager, OpenShift product management, and distinguished engineer at Red Hat, in an interview with *Network World*. - The custom UDNs are being integrated into the open virtual networking (OVN) Kubernetes container networking interface (CNI). CNI is an open-source network plugin for Kubernetes that enables different networking drivers to be easily implemented. Custom UDNs also benefit from the addition of Virtual Routing and Forwarding (VRF) support. - OpenShift 4.18 also debuts enhanced user-defined networks with [Border Gateway Protocol (BGP](https://www.networkworld.com/article/969572/bgp-what-is-border-gateway-protocol-and-how-does-it-work.html)). BGP support is being added to UDN as a routing protocol for pod/VM addressability and VPN support. - “This is particularly useful for integration with third-party load balancers needing direct access to backend OpenShift pods or VMs,” she said. - The new Secret Store CSI Driver bridges the gap between external secret management solutions and Kubernetes native workloads. Lim explained that instead of relying solely on OpenShift’s built-in Secret objects, which store sensitive data as base64-encoded values within the etcd key-value store, the Secret Store CSI Driver creates a seamless integration with enterprise-grade external secret management systems like AWS Secrets Manager, Azure Key Vault, CyberArk Conjur and HashiCorp Vault. ## Words and Idioms ### User-Defined Network (UDN) 사용자가 직접 정의한 네트워크로, 일반적으로 클라우드나 가상 환경에서 가상 머신이나 컨테이너 간의 네트워크 분리를 위해 구성됩니다. 네트워크 정책이나 토폴로지를 사용자가 원하는 대로 설정할 수 있습니다. ### Open Virtual Networking (OVN) Open vSwitch 기반의 네트워크 가상화 솔루션으로, 가상화 환경에서 네트워크 오버레이를 구현하고 관리합니다. 분산 환경에서 스위치 기능을 확장하여 컨테이너나 가상 머신 간의 효율적인 통신을 지원합니다. ### Container Networking Interface (CNI) 컨테이너 런타임에서 네트워크 인터페이스를 설정하기 위한 표준 인터페이스입니다. 다양한 네트워크 플러그인과 함께 동작하여, 컨테이너의 네트워크 구성을 일관되게 관리할 수 있도록 도와줍니다. ### Virtual Routing and Forwarding (VRF) 하나의 물리적 라우터에서 여러 개의 독립된 라우팅 테이블을 운영할 수 있게 하는 기술입니다. 이를 통해 네트워크 세분화 및 트래픽 격리가 가능해지며, 보안 및 관리 효율성을 높일 수 있습니다. # References [Red Hat OpenShift 4.18 expands cloud-native networking \| Network World](https://www.networkworld.com/article/3833169/red-hat-openshift-4-18-expands-cloud-native-networking.html) # Links [[_MOC_2_English]] # Tags #english #study #redhat # Aliases #영어 #공부 #레드햇