typhoon/aws/flatcar-linux/kubernetes/cl/controller.yaml
Dalton Hubble 136107b448 Set Kubelet resolver config to /run/systemd/resolve/resolv.conf
* Both Flatcar Linux and Fedora CoreOS use systemd-resolved,
but they setup /etc/resolv.conf symlinks differently
* Prefer using /run/systemd/resolve/resolv.conf directly, which
also updates to reflect runtime changes (e.g. resolvectl)
2021-12-10 08:22:30 -08:00

217 lines
7.9 KiB
YAML

---
systemd:
units:
- name: etcd-member.service
enabled: true
contents: |
[Unit]
Description=etcd (System Container)
Documentation=https://github.com/etcd-io/etcd
Requires=docker.service
After=docker.service
[Service]
Environment=ETCD_IMAGE=quay.io/coreos/etcd:v3.5.1
ExecStartPre=/usr/bin/docker run -d \
--name etcd \
--network host \
--env-file /etc/etcd/etcd.env \
--user 232:232 \
--volume /etc/ssl/etcd:/etc/ssl/certs:ro \
--volume /var/lib/etcd:/var/lib/etcd:rw \
$${ETCD_IMAGE}
ExecStart=docker logs -f etcd
ExecStop=docker stop etcd
ExecStopPost=docker rm etcd
Restart=always
RestartSec=10s
TimeoutStartSec=0
LimitNOFILE=40000
[Install]
WantedBy=multi-user.target
- name: docker.service
enabled: true
- name: locksmithd.service
mask: true
- name: wait-for-dns.service
enabled: true
contents: |
[Unit]
Description=Wait for DNS entries
Wants=systemd-resolved.service
Before=kubelet.service
[Service]
Type=oneshot
RemainAfterExit=true
ExecStart=/bin/sh -c 'while ! /usr/bin/grep '^[^#[:space:]]' /etc/resolv.conf > /dev/null; do sleep 1; done'
[Install]
RequiredBy=kubelet.service
RequiredBy=etcd-member.service
- name: kubelet.service
enabled: true
contents: |
[Unit]
Description=Kubelet (System Container)
Requires=docker.service
After=docker.service
Requires=coreos-metadata.service
After=coreos-metadata.service
Wants=rpc-statd.service
[Service]
Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.23.0
EnvironmentFile=/run/metadata/coreos
ExecStartPre=/bin/mkdir -p /etc/cni/net.d
ExecStartPre=/bin/mkdir -p /etc/kubernetes/manifests
ExecStartPre=/bin/mkdir -p /opt/cni/bin
ExecStartPre=/bin/mkdir -p /var/lib/calico
ExecStartPre=/bin/mkdir -p /var/lib/kubelet/volumeplugins
ExecStartPre=/usr/bin/bash -c "grep 'certificate-authority-data' /etc/kubernetes/kubeconfig | awk '{print $2}' | base64 -d > /etc/kubernetes/ca.crt"
ExecStartPre=/usr/bin/docker run -d \
--name kubelet \
--privileged \
--pid host \
--network host \
-v /etc/cni/net.d:/etc/cni/net.d:ro \
-v /etc/kubernetes:/etc/kubernetes:ro \
-v /etc/machine-id:/etc/machine-id:ro \
-v /usr/lib/os-release:/etc/os-release:ro \
-v /lib/modules:/lib/modules:ro \
-v /run:/run \
-v /sys/fs/cgroup:/sys/fs/cgroup \
-v /var/lib/calico:/var/lib/calico:ro \
-v /var/lib/docker:/var/lib/docker \
-v /var/lib/kubelet:/var/lib/kubelet:rshared \
-v /var/log:/var/log \
-v /opt/cni/bin:/opt/cni/bin \
$${KUBELET_IMAGE} \
--anonymous-auth=false \
--authentication-token-webhook \
--authorization-mode=Webhook \
--bootstrap-kubeconfig=/etc/kubernetes/kubeconfig \
--cgroup-driver=systemd \
--client-ca-file=/etc/kubernetes/ca.crt \
--cluster_dns=${cluster_dns_service_ip} \
--cluster_domain=${cluster_domain_suffix} \
--healthz-port=0 \
--kubeconfig=/var/lib/kubelet/kubeconfig \
--network-plugin=cni \
--node-labels=node.kubernetes.io/controller="true" \
--pod-manifest-path=/etc/kubernetes/manifests \
--provider-id=aws:///$${COREOS_EC2_AVAILABILITY_ZONE}/$${COREOS_EC2_INSTANCE_ID} \
--read-only-port=0 \
--resolv-conf=/run/systemd/resolve/resolv.conf \
--register-with-taints=node-role.kubernetes.io/controller=:NoSchedule \
--rotate-certificates \
--volume-plugin-dir=/var/lib/kubelet/volumeplugins
ExecStart=docker logs -f kubelet
ExecStop=docker stop kubelet
ExecStopPost=docker rm kubelet
Restart=always
RestartSec=10
[Install]
WantedBy=multi-user.target
- name: bootstrap.service
contents: |
[Unit]
Description=Kubernetes control plane
Wants=docker.service
After=docker.service
ConditionPathExists=!/opt/bootstrap/bootstrap.done
[Service]
Type=oneshot
RemainAfterExit=true
WorkingDirectory=/opt/bootstrap
Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.23.0
ExecStart=/usr/bin/docker run \
-v /etc/kubernetes/pki:/etc/kubernetes/pki:ro \
-v /opt/bootstrap/assets:/assets:ro \
-v /opt/bootstrap/apply:/apply:ro \
--entrypoint=/apply \
$${KUBELET_IMAGE}
ExecStartPost=/bin/touch /opt/bootstrap/bootstrap.done
[Install]
WantedBy=multi-user.target
storage:
directories:
- path: /var/lib/etcd
filesystem: root
mode: 0700
overwrite: true
files:
- path: /etc/kubernetes/kubeconfig
filesystem: root
mode: 0644
contents:
inline: |
${kubeconfig}
- path: /opt/bootstrap/layout
filesystem: root
mode: 0544
contents:
inline: |
#!/bin/bash -e
mkdir -p -- auth tls/etcd tls/k8s static-manifests manifests/coredns manifests-networking
awk '/#####/ {filename=$2; next} {print > filename}' assets
mkdir -p /etc/ssl/etcd/etcd
mkdir -p /etc/kubernetes/pki
mv tls/etcd/{peer*,server*} /etc/ssl/etcd/etcd/
mv tls/etcd/etcd-client* /etc/kubernetes/pki/
chown -R etcd:etcd /etc/ssl/etcd
chmod -R 500 /etc/ssl/etcd
chmod -R 700 /var/lib/etcd
mv auth/* /etc/kubernetes/pki/
mv tls/k8s/* /etc/kubernetes/pki/
mkdir -p /etc/kubernetes/manifests
mv static-manifests/* /etc/kubernetes/manifests/
mkdir -p /opt/bootstrap/assets
mv manifests /opt/bootstrap/assets/manifests
mv manifests-networking/* /opt/bootstrap/assets/manifests/
rm -rf assets auth static-manifests tls manifests-networking
- path: /opt/bootstrap/apply
filesystem: root
mode: 0544
contents:
inline: |
#!/bin/bash -e
export KUBECONFIG=/etc/kubernetes/pki/admin.conf
until kubectl version; do
echo "Waiting for static pod control plane"
sleep 5
done
until kubectl apply -f /assets/manifests -R; do
echo "Retry applying manifests"
sleep 5
done
- path: /etc/sysctl.d/max-user-watches.conf
filesystem: root
mode: 0644
contents:
inline: |
fs.inotify.max_user_watches=16184
- path: /etc/etcd/etcd.env
filesystem: root
mode: 0644
contents:
inline: |
ETCD_NAME=${etcd_name}
ETCD_DATA_DIR=/var/lib/etcd
ETCD_ADVERTISE_CLIENT_URLS=https://${etcd_domain}:2379
ETCD_INITIAL_ADVERTISE_PEER_URLS=https://${etcd_domain}:2380
ETCD_LISTEN_CLIENT_URLS=https://0.0.0.0:2379
ETCD_LISTEN_PEER_URLS=https://0.0.0.0:2380
ETCD_LISTEN_METRICS_URLS=http://0.0.0.0:2381
ETCD_INITIAL_CLUSTER=${etcd_initial_cluster}
ETCD_STRICT_RECONFIG_CHECK=true
ETCD_TRUSTED_CA_FILE=/etc/ssl/certs/etcd/server-ca.crt
ETCD_CERT_FILE=/etc/ssl/certs/etcd/server.crt
ETCD_KEY_FILE=/etc/ssl/certs/etcd/server.key
ETCD_CLIENT_CERT_AUTH=true
ETCD_PEER_TRUSTED_CA_FILE=/etc/ssl/certs/etcd/peer-ca.crt
ETCD_PEER_CERT_FILE=/etc/ssl/certs/etcd/peer.crt
ETCD_PEER_KEY_FILE=/etc/ssl/certs/etcd/peer.key
ETCD_PEER_CLIENT_CERT_AUTH=true
passwd:
users:
- name: core
ssh_authorized_keys:
- "${ssh_authorized_key}"