These are more flexible because their secrets can be used with services other than CircleCI. Using third-party secret storesĪnother option is to use third-party secret stores such as SecretHub, AWS Secrets Manager, or Hashicorp Vault. You could then have your template rendering engine insert the data from these environment variables into your config file templates to render a config file appropriate for the target deployment environment. The secrets in these contexts will then be made available as environment variables for the duration of that job. In the configuration for a CircleCI pipeline job, you can specify one or more contexts to load. Tip: If your secrets will exclusively be used within CircleCI, use CircleCI’s contexts. Their values cannot be revealed outside of a CircleCI pipeline job.Their keys and values cannot be modified after creation.They can be automatically rotated using the CircleCI CLI.They are stored in Hashicorp Vault, encrypted using AES256-GCM96, and cannot be accessed by CircleCI employees (link).Secrets recorded in contexts have the following attributes: The challenge here is twofold: First, how can you store your secrets securely? Second, how can you make them accessible to the processes in your CI/CD pipeline that will render the templates? Managing secrets with CircleCI contextsĬircleCI has a built-in secret store accessible via our contexts feature. We’ll go over some solutions to each of these challenges in the next sections of this post. How to inject the templates once rendered.How to dynamically render the config templates.How to securely store and access the secrets.But this introduces several new challenges: A better solution would be to generate the config file with the correct token on the fly and inject it into the CI/CD pipeline job. First, because checking secrets into source control is poor security practice, and second, because you don’t want to maintain separate “prod” and “dev” versions of this config file. Now, you don’t want to hardcode these tokens into a config file and check it into your version control system (VCS), for two reasons. To keep your production and nonproduction environments isolated, you have created a “prod” API token for your production servers and a “dev” API token for your non-production servers. That VM needs a secret API token embedded in a configuration file to communicate with a third-party service. Say you have a virtual machine (VM) that is part of your application. When deploying to multiple environments, though, you might need to dynamically inject different secrets depending on the environment to which you’re deploying. This can be straightforward if you’re only deploying to a single environment. To do this, we'll use the Official Orb from CircleCI.It’s often necessary to inject secrets into your build or deployment process so that the deployed service can interact with other services. Thankfully, the official Orb can be trusted to be fairly secure, and we can use it to install SAM and move on with how we'd normally manually deploy the code. The docs are inconsistent (even on the official orb, damn it!), and commands and such just flat broke sometimes. The CircleCI Orbs ProblemĬircleCI has three or so AWS SAM orbs, none of which worked all that well for me. Sam abstracts away a few of the annoying boilerplate things that you have to do to run with cloudformation, and I built an app a while back that used it! Until yesterday, I had survived without CI/CD. (Verbose, normal) cloudformation is a pain in the ass, and CDK never scratched that itch for me. I just don't think there's an easier way to ship code straight to Lambda. run : sam deploy -config -env $ A SAM Love Letter sam/install : aws-access-key-id : AWS_ACCESS_KEY Yaml jobs : build_and_deploy : executor : sam/default
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