Networking and Kubernetes - Helion

ebook

Autor: James Strong, Vallery Lancey
ISBN: 9781492081609
stron: 340, Format: ebook
Data wydania: 2021-09-08
Księgarnia: Helion

Cena książki: 29,90 zł (poprzednio: 213,57 zł)
Oszczędzasz: 86% (-183,67 zł)

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Kubernetes has become an essential part of the daily work for most system, network, and cluster administrators today. But to work effectively together on a production-scale Kubernetes system, they must be able to speak the same language. This book provides a clear guide to the layers of complexity and abstraction that come with running a Kubernetes network.

Authors James Strong and Vallery Lancey bring you up to speed on the intricacies that Kubernetes has to offer for large container deployments. If you're to be effective in troubleshooting and maintaining a production cluster, you need to be well versed in the abstraction provided at each layer. This practical book shows you how.

Learn the Kubernetes networking model
Choose the best interface for your clusters from the CNCF Container Network Interface project
Explore the networking and Linux primitives that power Kubernetes
Quickly troubleshoot networking issues and prevent downtime
Examine cloud networking and Kubernetes using the three major providers: Amazon Web Services, Google Cloud, and Microsoft Azure
Learn the pros and cons of various network tools--and how to select the best ones for your stack

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Spis treści

Networking and Kubernetes eBook -- spis treści

Preface
- Just Another Packet
- Who This Book Is For
- What You Will Learn
- Conventions Used in This Book
- Using Code Examples
- OReilly Online Learning
- How to Contact Us
- Acknowledgments
1. Networking Introduction
- Networking History
- OSI Model
- TCP/IP
  - Application
    - HTTP
  - Transport
    - TCP
    - TCP handshake
    - tcpdump
    - TLS
    - UDP
  - Network
  - Internet Protocol
    - Getting round the network
    - ICMP
  - Link Layer
  - Revisiting Our Web Server
- Conclusion
2. Linux Networking
- Basics
- The Network Interface
- The Bridge Interface
- Packet Handling in the Kernel
  - Netfilter
  - Conntrack
  - Routing
- High-Level Routing
  - iptables
    - iptables tables
    - iptables chains
    - Subchains
    - iptables rules
    - Practical iptables
  - IPVS
  - eBPF
- Network Troubleshooting Tools
  - Security Warning
  - ping
  - traceroute
  - dig
  - telnet
  - nmap
  - netstat
  - netcat
  - Openssl
  - cURL
- Conclusion
3. Container Networking Basics
- Introduction to Containers
  - Applications
  - Hypervisor
  - Containers
    - OCI
    - LXC
    - runC
    - containerd
    - lmctfy
    - rkt
    - Docker
    - CRI-O
- Container Primitives
  - Control Groups
  - Namespaces
  - Setting Up Namespaces
- Container Network Basics
  - Docker Networking Model
  - Overlay Networking
  - Container Network Interface
- Container Connectivity
  - Container to Container
  - Container to Container Separate Hosts
- Conclusion
4. Kubernetes Networking Introduction
- The Kubernetes Networking Model
- Node and Pod Network Layout
  - Isolated Networks
  - Flat Networks
  - Island Networks
  - kube-controller-manager Configuration
- The Kubelet
- Pod Readiness and Probes
- The CNI Specification
- CNI Plugins
  - The IPAM Interface
  - Popular CNI Plugins
- kube-proxy
  - userspace Mode
  - iptables Mode
  - ipvs Mode
  - kernelspace Mode
- NetworkPolicy
  - NetworkPolicy Example with Cilium
  - Selecting Pods
    - The LabelSelector type
  - Rules
- DNS
- IPv4/IPv6 Dual Stack
- Conclusion
5. Kubernetes Networking Abstractions
- StatefulSets
- Endpoints
- Endpoint Slices
- Kubernetes Services
  - NodePort
  - ClusterIP
  - Headless
  - ExternalName Service
  - LoadBalancer
  - Services Conclusion
- Ingress
- Ingress Controllers and Rules
  - Deploy ingress rules
- Service Meshes
- Conclusion
6. Kubernetes and Cloud Networking
- Amazon Web Services
  - AWS Network Services
    - Virtual private cloud
    - Region and availability zones
    - Subnet
    - Routing tables
    - Elastic network interface
    - Elastic IP address
    - Security controls
      - Security groups
      - Network access control lists
    - Network address translation devices
    - Internet gateway
    - Elastic load balancers
  - Amazon Elastic Kubernetes Service
    - EKS nodes
    - EKS mode
    - eksctl
    - AWS VPC CNI
    - AWS ALB ingress controller
  - Deploying an Application on an AWS EKS Cluster
    - Deploy EKS cluster
    - Deploy test application
    - Verify LoadBalancer services for Golang web server
    - Deploy ALB ingress and verify
    - Cleanup
- Google Compute Cloud (GCP)
  - GCP Network Services
    - Regions and zones
    - Virtual private cloud
    - Subnet
    - Routes and firewall rules
    - Cloud load balancing
    - GCE instances
  - GKE
    - GCP GKE nodes
- Azure
  - Azure Networking Services
    - Azure backbone infrastructure
    - Subnets
    - Route tables
    - Public and private IPs
    - Network security groups
    - Communication outside the virtual network
    - Azure load balancer
  - Azure Kubernetes Service
    - Azure CNI
    - Application gateway ingress controller
  - Deploying an Application to Azure Kubernetes Service
    - Deploying an Azure Kubernetes Service cluster
    - Connecting to and configuring AKS
    - Deploying the Go web server
    - AKS conclusion
- Conclusion
Index