cb2e5ac776
* Drop linux capabilities for unprivileged containerized worlkoads Kargo configures for deployments. * Configure required securityContext/user/group/groups for kube components' static manifests, etcd, calico-rr and k8s apps, like dnsmasq daemonset. * Rework cloud-init (etcd) users creation for CoreOS. * Fix nologin paths, adjust defaults for addusers role and ensure supplementary groups membership added for users. * Add netplug user for network plugins (yet unused by privileged networking containers though). * Grant the kube and netplug users read access for etcd certs via the etcd certs group. * Grant group read access to kube certs via the kube cert group. * Remove priveleged mode for calico-rr and run it under its uid/gid and supplementary etcd_cert group. * Adjust docs. * Align cpu/memory limits and dropped caps with added rkt support for control plane. Signed-off-by: Bogdan Dobrelya <bogdando@mail.ru>
65 lines
2.8 KiB
Django/Jinja
65 lines
2.8 KiB
Django/Jinja
[Unit]
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Description=Kubernetes Kubelet Server
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Documentation=https://github.com/GoogleCloudPlatform/kubernetes
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{% if kube_network_plugin is defined and kube_network_plugin == "calico" %}
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After=calico-node.service
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Wants=network.target calico-node.service
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{% else %}
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Wants=network.target
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{% endif %}
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[Service]
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Restart=on-failure
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RestartSec=10s
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TimeoutStartSec=0
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LimitNOFILE=40000
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ExecStartPre=-/usr/bin/rkt rm --uuid-file=/var/run/kubelet.uuid
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ExecStartPre=-/bin/mkdir -p /var/lib/kubelet
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EnvironmentFile={{kube_config_dir}}/kubelet.env
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# stage1-fly mounts /proc /sys /dev so no need to duplicate the mounts
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ExecStart=/usr/bin/rkt run \
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--volume dns,kind=host,source=/etc/resolv.conf \
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--volume etc-cni,kind=host,source=/etc/cni,readOnly=true \
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--volume etc-kubernetes,kind=host,source={{ kube_config_dir }},readOnly=false \
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--volume etc-ssl-certs,kind=host,source=/etc/ssl/certs,readOnly=true \
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--volume etcd-ssl,kind=host,source={{ etcd_config_dir }},readOnly=true \
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--volume opt-cni,kind=host,source=/opt/cni,readOnly=true \
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--volume run,kind=host,source=/run,readOnly=false \
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--volume usr-share-certs,kind=host,source=/usr/share/ca-certificates,readOnly=true \
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--volume var-lib-docker,kind=host,source={{ docker_daemon_graph }},readOnly=false \
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--volume var-lib-kubelet,kind=host,source=/var/lib/kubelet,readOnly=false \
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--volume var-log,kind=host,source=/var/log \
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--mount volume=dns,target=/etc/resolv.conf \
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--mount volume=etc-cni,target=/etc/cni \
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--mount volume=etc-kubernetes,target={{ kube_config_dir }} \
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--mount volume=etc-ssl-certs,target=/etc/ssl/certs \
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--mount volume=etcd-ssl,target={{ etcd_config_dir }} \
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--mount volume=opt-cni,target=/opt/cni \
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--mount volume=run,target=/run \
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--mount volume=usr-share-certs,target=/usr/share/ca-certificates \
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--mount volume=var-lib-docker,target=/var/lib/docker \
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--mount volume=var-lib-kubelet,target=/var/lib/kubelet \
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--mount volume=var-log,target=/var/log \
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--stage1-from-dir=stage1-fly.aci \
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{{ hyperkube_image_repo }}:{{ hyperkube_image_tag }} \
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--memory={{ kubelet_memory_limit }} --cpu={{ kubelet_cpu_limit }} \
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--uuid-file-save=/var/run/kubelet.uuid \
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--debug --exec=/kubelet -- \
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$KUBE_LOGTOSTDERR \
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$KUBE_LOG_LEVEL \
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$KUBELET_API_SERVER \
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$KUBELET_ADDRESS \
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$KUBELET_PORT \
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$KUBELET_HOSTNAME \
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$KUBE_ALLOW_PRIV \
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$KUBELET_ARGS \
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$DOCKER_SOCKET \
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$KUBELET_REGISTER_NODE \
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$KUBELET_NETWORK_PLUGIN
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ExecStop=-/usr/bin/rkt stop --uuid-file=/var/run/kubelet.uuid
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[Install]
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WantedBy=multi-user.target
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