docker:tldr:57231

docker: Rotate the current CA certificate and display the new certificate.

docker

$ docker swarm ca --rotate

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The command "docker swarm ca --rotate" is used to rotate the certificate authority (CA) key used by Docker Swarm. Docker Swarm is a native clustering and orchestration solution provided by Docker, used to create and manage a swarm of Docker nodes (containers).

In a Swarm cluster, the CA key is used to verify the authenticity of the nodes that are part of the Swarm. The CA key ensures that only trusted nodes can join the Swarm and participate in the cluster.

By running "docker swarm ca --rotate" command, you are initiating the rotation of the CA key. This action generates a new CA key and updates it across the Swarm cluster. The rotation process includes updating the new CA key on all the managers and workers in the Swarm, ensuring secure communication within the cluster.

Rotating the CA key periodically enhances the security of the Swarm cluster. It prevents any unauthorized access or compromise due to a compromised or leaked key.

This explanation was created by an AI. In most cases those are correct. But please always be careful and never run a command you are not sure if it is safe.

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