mirror of
https://github.com/puppetmaster/typhoon.git
synced 2024-12-26 19:59:34 +01:00
413585681b
* Kubelet `--lock-file` and `--exit-on-lock-contention` date back to usage of bootkube and at one point running Kubelet in a "self-hosted" style whereby an on-host Kubelet (rkt) started pods, but then a Kubelet DaemonSet was scheduled and able to take over (hence self-hosted). `lock-file` and `exit-on-lock-contention` flags supported this pivot. The pattern has been out of favor (in bootkube too) for years because of dueling Kubelet complexity * Typhoon runs Kubelet as a container via an on-host systemd unit using podman (Fedora CoreOS) or rkt (Flatcar Linux). In fact, Typhoon no longer uses bootkube or control plane pivot (let alone Kubelet pivot) and uses static pods since v1.16.0 * https://github.com/poseidon/typhoon/pull/536
135 lines
5.5 KiB
YAML
135 lines
5.5 KiB
YAML
---
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systemd:
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units:
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- name: docker.service
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enabled: true
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- name: locksmithd.service
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mask: true
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- name: kubelet.path
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enabled: true
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contents: |
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[Unit]
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Description=Watch for kubeconfig
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[Path]
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PathExists=/etc/kubernetes/kubeconfig
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[Install]
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WantedBy=multi-user.target
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- name: wait-for-dns.service
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enabled: true
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contents: |
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[Unit]
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Description=Wait for DNS entries
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Wants=systemd-resolved.service
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Before=kubelet.service
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[Service]
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Type=oneshot
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RemainAfterExit=true
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ExecStart=/bin/sh -c 'while ! /usr/bin/grep '^[^#[:space:]]' /etc/resolv.conf > /dev/null; do sleep 1; done'
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[Install]
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RequiredBy=kubelet.service
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- name: kubelet.service
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contents: |
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[Unit]
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Description=Kubelet
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Wants=rpc-statd.service
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[Service]
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Environment=KUBELET_IMAGE=docker://quay.io/poseidon/kubelet:v1.18.3-4-g57fa88a
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Environment=KUBELET_CGROUP_DRIVER=${cgroup_driver}
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ExecStartPre=/bin/mkdir -p /etc/kubernetes/cni/net.d
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ExecStartPre=/bin/mkdir -p /etc/kubernetes/manifests
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ExecStartPre=/bin/mkdir -p /opt/cni/bin
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ExecStartPre=/bin/mkdir -p /var/lib/calico
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ExecStartPre=/bin/mkdir -p /var/lib/kubelet/volumeplugins
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ExecStartPre=/usr/bin/bash -c "grep 'certificate-authority-data' /etc/kubernetes/kubeconfig | awk '{print $2}' | base64 -d > /etc/kubernetes/ca.crt"
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ExecStartPre=-/usr/bin/rkt rm --uuid-file=/var/cache/kubelet-pod.uuid
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ExecStart=/usr/bin/rkt run \
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--uuid-file-save=/var/cache/kubelet-pod.uuid \
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--stage1-from-dir=stage1-fly.aci \
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--hosts-entry host \
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--insecure-options=image \
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--volume etc-kubernetes,kind=host,source=/etc/kubernetes,readOnly=true \
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--mount volume=etc-kubernetes,target=/etc/kubernetes \
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--volume etc-machine-id,kind=host,source=/etc/machine-id,readOnly=true \
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--mount volume=etc-machine-id,target=/etc/machine-id \
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--volume etc-os-release,kind=host,source=/usr/lib/os-release,readOnly=true \
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--mount volume=etc-os-release,target=/etc/os-release \
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--volume=etc-resolv,kind=host,source=/etc/resolv.conf,readOnly=true \
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--mount volume=etc-resolv,target=/etc/resolv.conf \
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--volume etc-ssl-certs,kind=host,source=/etc/ssl/certs,readOnly=true \
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--mount volume=etc-ssl-certs,target=/etc/ssl/certs \
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--volume lib-modules,kind=host,source=/lib/modules,readOnly=true \
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--mount volume=lib-modules,target=/lib/modules \
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--volume run,kind=host,source=/run \
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--mount volume=run,target=/run \
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--volume usr-share-certs,kind=host,source=/usr/share/ca-certificates,readOnly=true \
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--mount volume=usr-share-certs,target=/usr/share/ca-certificates \
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--volume var-lib-calico,kind=host,source=/var/lib/calico,readOnly=true \
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--mount volume=var-lib-calico,target=/var/lib/calico \
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--volume var-lib-docker,kind=host,source=/var/lib/docker \
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--mount volume=var-lib-docker,target=/var/lib/docker \
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--volume var-lib-kubelet,kind=host,source=/var/lib/kubelet,recursive=true \
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--mount volume=var-lib-kubelet,target=/var/lib/kubelet \
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--volume var-log,kind=host,source=/var/log \
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--mount volume=var-log,target=/var/log \
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--volume opt-cni-bin,kind=host,source=/opt/cni/bin \
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--mount volume=opt-cni-bin,target=/opt/cni/bin \
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--volume etc-iscsi,kind=host,source=/etc/iscsi \
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--mount volume=etc-iscsi,target=/etc/iscsi \
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--volume usr-sbin-iscsiadm,kind=host,source=/usr/sbin/iscsiadm \
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--mount volume=usr-sbin-iscsiadm,target=/sbin/iscsiadm \
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$${KUBELET_IMAGE} -- \
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--anonymous-auth=false \
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--authentication-token-webhook \
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--authorization-mode=Webhook \
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--bootstrap-kubeconfig=/etc/kubernetes/kubeconfig \
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--cgroup-driver=$${KUBELET_CGROUP_DRIVER} \
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--client-ca-file=/etc/kubernetes/ca.crt \
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--cluster_dns=${cluster_dns_service_ip} \
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--cluster_domain=${cluster_domain_suffix} \
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--cni-conf-dir=/etc/kubernetes/cni/net.d \
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--healthz-port=0 \
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--hostname-override=${domain_name} \
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--kubeconfig=/var/lib/kubelet/kubeconfig \
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--network-plugin=cni \
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--node-labels=node.kubernetes.io/node \
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%{~ for label in compact(split(",", node_labels)) ~}
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--node-labels=${label} \
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%{~ endfor ~}
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%{~ for taint in compact(split(",", node_taints)) ~}
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--register-with-taints=${taint} \
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%{~ endfor ~}
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--pod-manifest-path=/etc/kubernetes/manifests \
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--read-only-port=0 \
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--rotate-certificates \
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--volume-plugin-dir=/var/lib/kubelet/volumeplugins
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ExecStop=-/usr/bin/rkt stop --uuid-file=/var/cache/kubelet-pod.uuid
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Restart=always
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RestartSec=5
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[Install]
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WantedBy=multi-user.target
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storage:
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directories:
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- path: /etc/kubernetes
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filesystem: root
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mode: 0755
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files:
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- path: /etc/hostname
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filesystem: root
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mode: 0644
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contents:
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inline:
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${domain_name}
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- path: /etc/sysctl.d/max-user-watches.conf
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filesystem: root
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mode: 0644
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contents:
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inline: |
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fs.inotify.max_user_watches=16184
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passwd:
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users:
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- name: core
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ssh_authorized_keys:
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- ${ssh_authorized_key}
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