Resolving DNS Issues

Understand what DNS is in Docker, and how to resolve issues related to it.

DNS (Domain Name System) is a fundamental network protocol. It enables applications and services to communicate with each other using human-readable domain names rather than relying on IP addresses.

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An illustration of how DNS works
An illustration of how DNS works

In Docker, DNS plays a crucial role in enabling containerized applications to resolve domain names and establish network connectivity. Docker containers rely on DNS to perform various tasks, including:

  • DNS resolution: Docker containers use DNS to resolve domain names into IP addresses. When a container needs to communicate with another container or an external service, it uses DNS resolution to determine the IP address associated with the target domain name.

  • Network configuration: DNS is used to ...