Crater agents
- Source code: rust-lang/crater
- Hosted on:
crater-aws-1.infra.rust-lang.org(behind the bastion – how to connect)crater-azure-1.infra.rust-lang.org(behind the bastion – how to connect)
- Maintainers: pietroalbini
- Application metrics (only available to infra team members).
- Instance metrics (only available to infra team members):
Service configuration
Crater agents are servers with our standard configuration running a Docker container hosting the agent. A timer checks for updates every 5 minutes, and if a newer Docker image is present the container will automatically be updated and restarted. This service is managed with Ansible.
Common maintenance procedures
Starting and stopping the agent
The agent is managed by the container-crater-agent.service systemd unit. That
means it’s possible to start, stop and restart it with the usual systemctl
commands:
systemctl stop container-crater-agent.service
systemctl start container-crater-agent.service
systemctl restart container-crater-agent.service
Inspecting the logs of the agent
Logs of the agents are forwarded and collected by journald. To see them you can use journalctl:
journalctl -u container-crater-agent.service
Manually updating the container image
The container is updated automatically every 5 minutes (provided a newer image is present). If you need to update them sooner you can manually start the updater service by running this command:
systemctl start docker-images-update.service