Changelog

• Improved the retry logic on task pod startup to prevent errors.
• Release of the Linux machine runner 3.0 preview. For more information see, Installing Machine Runner 3.0 on Linux.

• Reduce claiming interval from 10 seconds to 5 seconds
• Improve robustness when starting tasks on newly created nodes
• Default to a non-root user in the container runner Docker image

What’s New

• CircleCI built in environment variables set as labels on task pods
• Task pod garbage collection improvements
• Improve task-agent task pod injection reliability
• Improve task-agent download reliability

What’s New

• Add circleci symlink to the circleci-agent binary within tasks
• Retry loading resource class token secrets on retryable errors
• Update various dependencies

What’s New

• Upgrade to Go 1.20
• Migrate Helm chart to new image repository: https://hub.docker.com/r/circleci/runner-agent/
• Improve error handling and increase reliability in the task worker loop
• Sample low-value health check logs when using the informational logging level

What’s New

• Bugfixes and package updates

What’s New

• Add lifecycle pre-stop command to gracefully terminate task agent on shutdown
• Ensure all Task lifecycle step events can be sent, even on shutdown of the agent and the context is cancelled
• Don’t delete the task pod if task agent is still running
  • This is related to issue https://github.com/kubernetes/client-go/issues/724. The remotecommand package may not always handle network disconnects on the exec command, returning a nil error. Therefore, we don’t delete the task pod in this case, giving a chance for the task to complete in an “orphaned” state.
• Prevent Task lifecycle step output from being lost during long-running jobs
• Improve task cleanup liveness check robustness and add extra logging
• Fix draining and cleanup of a task on shutdown of the runner agent
• Use stricter task pod config parsing with more helpful error messaging

What’s New

• Various dependency updates
• Fix for task liveness probe retries not being respected
• Fix for task pods not being cleaned up when exiting with a run error

What’s New

• Fix Kubernetes cleanup panic when pod allocation fails
• Fix incorrect liveness probe failures if the task agent PID file is deleted
• Log platform info to the Task lifecycle step
• Make user agent header driver specific

What’s New

• Log errors from calls to Kubernetes API when loading token secrets on Kubernetes driver startup
• Set reasonable resource requests and limits for logging containers
• Add a liveness probe to check the health of the task-agent process
• Respect node RBAC permission setting in K8s GC
• Fix for custom Docker registry names
• Fix for broken pipes while copying task agent when using Alpine-based images on MicroK8s
• Fix for the task token from being able to be exposed in a job
• Support Bash parameter expansion syntax in the job config file
• Improve logging container configuration:
  • Only mount the service account token if there are service containers and therefore a logging container
  • Make the logging container respect the image pull policy of the task pod config, if set. This matches the behaviour of the primary and secondary containers in the task pod.
• Improve task pod event logging in the Task lifecycle step