CoreOS Units for upgrading Kubernetes Master

kube-apiserver.service

[Unit]
Description=Kubernetes API Server
Documentation=https://github.com/GoogleCloudPlatform/kubernetes
Requires=setup-network-environment.service etcd2.service generate-serviceaccount-key.service
After=setup-network-environment.service etcd2.service generate-serviceaccount-key.service

[Service]
EnvironmentFile=/etc/network-environment
ExecStartPre=-/usr/bin/mkdir -p /opt/bin
ExecStartPre=-/usr/bin/mv /opt/bin/kube-apiserver /opt/bin/kube-apiserver.backup
ExecStartPre=/usr/bin/curl -L -o /opt/bin/kube-apiserver -z /opt/bin/kube-apiserver \
                https://storage.googleapis.com/kubernetes-release/release/v0.21.1/bin/linux/amd64/kube-apiserver
ExecStartPre=/usr/bin/chmod +x /opt/bin/kube-apiserver
ExecStartPre=/opt/bin/wupiao 127.0.0.1:2379/v2/machines
ExecStart=/opt/bin/kube-apiserver \
                --service_account_key_file=/opt/bin/kube-serviceaccount.key \
                --service_account_lookup=false \
                --admission_control=NamespaceLifecycle,NamespaceAutoProvision,LimitRanger,SecurityContextDeny,ServiceAccount,ResourceQuota \
                --runtime_config=api/v1 \
                --allow_privileged=true \
                --insecure_bind_address=0.0.0.0 \
                --insecure_port=8080 \
                --kubelet_https=true \
                --secure_port=6443 \
                --service-cluster-ip-range=10.100.0.0/16 \
                --etcd_servers=http://127.0.0.1:2379 \
                --public_address_override=${DEFAULT_IPV4} \
                --logtostderr=true
Restart=always
RestartSec=10

kube-controller-manager.service

[Unit]
Description=Kubernetes Controller Manager
Documentation=https://github.com/GoogleCloudPlatform/kubernetes
Requires=kube-apiserver.service
After=kube-apiserver.service

[Service]
ExecStartPre=-/usr/bin/mv /opt/bin/kube-controller-manager /opt/bin/kube-controller-manager.backup
ExecStartPre=/usr/bin/curl -L -o /opt/bin/kube-controller-manager -z /opt/bin/kube-controller-manager \
                https://storage.googleapis.com/kubernetes-release/release/v0.21.1/bin/linux/amd64/kube-controller-manager
ExecStartPre=/usr/bin/chmod +x /opt/bin/kube-controller-manager
ExecStart=/opt/bin/kube-controller-manager \
                --service_account_private_key_file=/opt/bin/kube-serviceaccount.key \
                --master=127.0.0.1:8080 \
                --logtostderr=true
Restart=always
RestartSec=10

kube-scheduler.service

[Unit]
Description=Kubernetes Scheduler
Documentation=https://github.com/GoogleCloudPlatform/kubernetes
Requires=kube-apiserver.service
After=kube-apiserver.service

[Service]
ExecStartPre=-/usr/bin/mv /opt/bin/kube-scheduler /opt/bin/kube-scheduler.backup
ExecStartPre=/usr/bin/curl -L -o /opt/bin/kube-scheduler -z /opt/bin/kube-scheduler \
                https://storage.googleapis.com/kubernetes-release/release/v0.21.1/bin/linux/amd64/kube-scheduler
ExecStartPre=/usr/bin/chmod +x /opt/bin/kube-scheduler
ExecStart=/opt/bin/kube-scheduler --master=127.0.0.1:8080
Restart=always
RestartSec=10