A record

As explained in Road to Kubernetes

A DNS A record maps a domain name to an IPv4 address.

How Road to Kubernetes covers it

How deep it goes

Defines the mapping and applies it to deployment examples, but does not detail DNS propagation or record-management procedures.

Examples

Uses Python and Node.js custom domains pointing to a managed load balancer.

What it assumes

Assumes a domain and static public IP from a managed load balancer, while defining the DNS mapping itself.

What you can do after

Apply it via a domain-hosting service to route custom domains to a load balancer’s static public IP.

How it connects

Ties DNS to IPv4 addresses, static public IPs, managed load balancers, and Kubernetes Services.

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Also explained in

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  Acing the CCNA Exam: Volume 2 Advanced Networking and SecurityAn A record is a DNS record that maps a domain name to an IPv4 address.

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Related concepts

• DNS recordkind of · A DNS record is a structured Domain Name System entry associating a domain name with information such as an address, service target, or administrative value.
• serviceproduced by · A Kubernetes Service is an API resource that provides stable network access and service discovery for a changing set of Pods or other specified destinations.
• headless serviceproduced by · A headless Service is a Kubernetes Service without a cluster IP that exposes its backing pod addresses directly through DNS.
• cname recordcontrasts with · A CNAME record is a DNS resource record that aliases one domain name to another canonical domain name.

This explainer was generated by Manning's knowledge graph from the text of Road to Kubernetes. The section links point to the parts of the book it draws on.