Dockerd

dockerd runtime for containers

/etc/default/docker (Upstart and SysVinit configurations)
/etc/docker/daemon.json (Ref: https://docs.docker.com/engine/reference/commandline/dockerd/)
/etc/docker/key.json

/var/run/docker.pid
/var/run/docker.sock

dockerd --debug

Your kernel does not sup port swap limit capabilities or the cgroup is not mounted. Memory limited without swap.

Dockerd logs

• journalctl -u docker
• systemctl status docker

Related

• containerd
• docker version
• /var/lib/docker/

See also

• Docker: dockerd, docker (command), dockerd-ce (dockerd), docker-proxy, Docker Kubernetes Service (DKS), /var/lib/docker/, /var/run/docker.sock, 9323, /etc/docker/daemon.json