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Set Kubelet image via kubelet.service KUBELET_IMAGE

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* Write the systemd kubelet.service to use `KUBELET_IMAGE`
as the Kubelet. This provides a nice way to use systemd
dropins to temporarily override the image (e.g. during a
registry outage)

Note: Only Typhoon Kubelet images and registries are supported.
This commit is contained in:
Dalton Hubble
2020-05-19 22:39:53 -07:00
parent 09eb208b4e
commit 4760543356
20 changed files with 40 additions and 20 deletions
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3
digital-ocean/container-linux/kubernetes/cl/controller.yaml
View File

@ -62,6 +62,7 @@ systemd:
After=coreos-metadata.service
Wants=rpc-statd.service
[Service]
Environment=KUBELET_IMAGE=docker://quay.io/poseidon/kubelet:v1.18.2
EnvironmentFile=/run/metadata/coreos
ExecStartPre=/bin/mkdir -p /etc/kubernetes/cni/net.d
ExecStartPre=/bin/mkdir -p /etc/kubernetes/manifests
@ -101,7 +102,7 @@ systemd:
--mount volume=var-log,target=/var/log \
--volume opt-cni-bin,kind=host,source=/opt/cni/bin \
--mount volume=opt-cni-bin,target=/opt/cni/bin \
docker://quay.io/poseidon/kubelet:v1.18.2 -- \
$${KUBELET_IMAGE} -- \
--anonymous-auth=false \
--authentication-token-webhook \
--authorization-mode=Webhook \

3
digital-ocean/container-linux/kubernetes/cl/worker.yaml
View File

@ -35,6 +35,7 @@ systemd:
After=coreos-metadata.service
Wants=rpc-statd.service
[Service]
Environment=KUBELET_IMAGE=docker://quay.io/poseidon/kubelet:v1.18.2
EnvironmentFile=/run/metadata/coreos
ExecStartPre=/bin/mkdir -p /etc/kubernetes/cni/net.d
ExecStartPre=/bin/mkdir -p /etc/kubernetes/manifests
@ -74,7 +75,7 @@ systemd:
--mount volume=var-log,target=/var/log \
--volume opt-cni-bin,kind=host,source=/opt/cni/bin \
--mount volume=opt-cni-bin,target=/opt/cni/bin \
docker://quay.io/poseidon/kubelet:v1.18.2 -- \
$${KUBELET_IMAGE} -- \
--anonymous-auth=false \
--authentication-token-webhook \
--authorization-mode=Webhook \