diff --git a/roles/kubernetes/templates/docker.service b/roles/kubernetes/templates/docker.service new file mode 100644 index 0000000..aba631a --- /dev/null +++ b/roles/kubernetes/templates/docker.service @@ -0,0 +1,32 @@ +[Unit] +Description=Docker Application Container Engine +Documentation=https://docs.docker.com +After=network.target docker.socket +Requires=docker.socket + +[Service] +Type=notify +# the default is not to use systemd for cgroups because the delegate issues still +# exists and systemd currently does not support the cgroup feature set required +# for containers run by docker +# Extra options: +# - select overlay as file driver +# - make the cluster accessible from the outside +ExecStart=/usr/bin/dockerd -H fd:// {{ dockerd_extra_args }} -s {{ docker.storage_driver }} +ExecReload=/bin/kill -s HUP $MAINPID +# Having non-zero Limit*s causes performance problems due to accounting overhead +# in the kernel. We recommend using cgroups to do container-local accounting. +LimitNPROC=infinity +LimitCORE=infinity +LimitNOFILE=infinity +# Uncomment TasksMax if your systemd version supports it. +# Only systemd 226 and above support this version. +#TasksMax=infinity +TimeoutStartSec=0 +# set delegate yes so that systemd does not reset the cgroups of docker containers +Delegate=yes +# kill only the docker process, not all processes in the cgroup +KillMode=process + +[Install] +WantedBy=multi-user.target