How do I use secrets in Docker Swarm?

How do I use secrets in Docker Swarm?

In Docker Swarm, secrets are used to manage sensitive data like passwords and API keys. You can create a secret using the command docker secret create <secret_name> <file>. After that, you can reference this secret in your services.

Can you show me an example of creating a secret?

Sure! First, create a file with your secret, for example, echo 'my_secret_password' > secret.txt. Then run docker secret create my_secret secret.txt to create the secret.

How do I use this secret in a service?

You can use the secret in a service by adding the --secret flag when you create or update the service. For example: docker service create --name my_service --secret my_secret my_image.

What if I want to update the secret?

To update a secret, you need to create a new version of the secret and then update the service to use the new secret. You can't directly update an existing secret.