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Add script for bundling images for airgap
Signed-off-by: Kyle Squizzato <[email protected]>
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| #!/bin/bash | ||
| # Copyright 2024 | ||
| # | ||
| # Licensed under the Apache License, Version 2.0 (the "License"); | ||
| # you may not use this file except in compliance with the License. | ||
| # You may obtain a copy of the License at | ||
| # | ||
| # http://www.apache.org/licenses/LICENSE-2.0 | ||
| # | ||
| # Unless required by applicable law or agreed to in writing, software | ||
| # distributed under the License is distributed on an "AS IS" BASIS, | ||
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| # See the License for the specific language governing permissions and | ||
| # limitations under the License. | ||
| # | ||
| # bundle-images.sh bundles all of the images used across HMC into a single | ||
| # tarball. This is useful for deploying HMC into air-gapped environments. | ||
| # It is recommended to use this script in conjunction with the Makefile target | ||
| # `make bundle-images` which will perform some additional steps outside of | ||
| # this scripts functionality. | ||
| # Usage: make bundle-images | ||
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| if [ -z $YQ ]; then | ||
| echo "YQ must be set to the path of the yq binary" | ||
| echo "Use 'make bundle-images' instead of running this script directly to populate this value" | ||
| exit 1 | ||
| fi | ||
|
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| if [ -z $HELM ]; then | ||
| echo "HELM must be set to the path of the helm binary" | ||
| echo "Use 'make bundle-images' instead of running this script directly to populate this value" | ||
| exit 1 | ||
| fi | ||
|
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| if [ -z $KIND_CLUSTER_NAME ]; then | ||
| echo "KIND_CLUSTER_NAME must be set to the name of the kind cluster" | ||
| echo "Use 'make bundle-images' instead of running this script directly to populate this value" | ||
| exit 1 | ||
| fi | ||
|
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| if [ -z $NAMESPACE ]; then | ||
| echo "NAMESPACE must be set to the namespace where HMC is deployed" | ||
| echo "Use 'make bundle-images' instead of running this script directly to populate this value" | ||
| exit 1 | ||
| fi | ||
|
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| if [ -z $BUNDLE_TARBALL ]; then | ||
| echo "BUNDLE_TARBALL must be set to the name of the tarball to create" | ||
| echo "Use 'make bundle-images' instead of running this script directly to populate this value" | ||
| exit 1 | ||
| fi | ||
|
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| LABEL_KEY="cluster.x-k8s.io/provider" | ||
| IMAGES_BUNDLED="" | ||
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| # Verify each provider we support has deployed so we can get the images used | ||
| # across the deployments. | ||
| for TEMPLATE in | ||
| $(ls templates/provider/*/templates/provider*.yaml) | ||
| do | ||
| PROVIDER_YAML=$(grep -P '(?=.*Provider)(?=.*kind)' -A 2 $TEMPLATE | grep -v '\--') | ||
| PROVIDER_KIND=$(echo $PROVIDER | $YQ e '.kind',,) | ||
| PROVIDER_NAME=$(echo $PROVIDER | $YQ e '.metadata.name') | ||
| PROVIDER_KIND_TOLOWER=$(echo ${KIND,,}) | ||
|
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| # controlplane is a special case which needs a hyphen. | ||
| if [[ $PROVIDER_KIND_TOLOWER == "controlplane" ]]; then | ||
| PROVIDER_KIND_TOLOWER="control-plane" | ||
| fi | ||
|
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| LABEL_VALUE=$(echo $($PROVIDER_KIND_TOLOWER | sed -e 's/provider//g')-$PROVIDER_NAME) | ||
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| kubectl wait --for condition=available --timeout=2m deploy -l $LABEL_KEY=$LABEL_VALUE -n $NAMESPACE | ||
| done | ||
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| # Now that we know everything is deployed and ready, we can get all of images by | ||
| # execing into the KIND cluster. | ||
| CONTROL_PLANE=$(kubectl get nodes --no-headers -o custom-columns=":metadata.name") | ||
|
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| for IMAGE in | ||
| $(docker exec -it $CONTROL_PLANE crictl images | sed 1,1d | awk '{print $1":"$2}' | grep -v "kindest") | ||
| do | ||
| docker pull $IMAGE && docker save $IMAGE -o $BUNDLE_TARBALL_NAME | ||
| echo $IMAGE >> $IMAGES_BUNDLED | ||
| done | ||
|
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| # Next, we need to build a list of images used by k0s extensions. Walk the | ||
| # templates directory and extract the images used by the extensions. | ||
| for TEMPLATE in | ||
| $(find ./templates -name 'k0s*.yaml') | ||
| do | ||
| if [[ $TEMPLATE == *"k0smotron"* ]]; then | ||
| EXTENSIONS_PATH=".spec.k0sConfig.spec.extensions.helm" | ||
| else | ||
| EXTENSIONS_PATH=".spec.k0sConfigSpec.k0s.spec.extensions.helm" | ||
| fi | ||
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| REPOS=grep -vw "{{" $TEMPLATE | | ||
| $YQ e "${EXTENSIONS_PATH}.repositories[] | [.url, .name] | join(\";\")" | ||
| for REPO in $REPOS | ||
| do | ||
| URL=$(echo $REPO | cut -d';' -f1) | ||
| NAME=$(echo $REPO | cut -d';' -f2) | ||
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| VERSION=$(grep -vw "{{" $TEMPLATE | | ||
| $YQ e "${EXTENSIONS_PATH}.charts[] | select(.name == \"$NAME\") | .version") | ||
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| VALUES=$(grep -vw "{{" $TEMPLATE | | ||
| $YQ e "${EXTENSIONS_PATH}.charts[] | select(.name == \"$NAME\") | .values") | ||
|
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| if [[ $VALUES != "null" ]]; then | ||
| # Check to see if a custom image is being used. | ||
| CUSTOM_TAG=$(echo $VALUES | $YQ e '.image.tag') | ||
| fi | ||
|
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| # Use 'helm template' to get the images used by the extension. | ||
| for IMAGE in $(HELM) template --repo $URL --version $VERSION $NAME | grep -Eo | cut -d' ' -f2 | ||
| do | ||
| if [[ -z $CUSTOM_TAG ]]; then | ||
| IMAGE=$(echo $IMAGE | sed -e "s/:.*$/:$CUSTOM_TAG/") | ||
| fi | ||
|
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| docker pull $IMAGE && docker save $IMAGE -o $BUNDLE_TARBALL_NAME | ||
| echo $IMAGE >> $IMAGES_BUNDLED | ||
| done | ||
| done | ||
| done | ||
|
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| # Cleanup the images bundled by removing them from the local image cache. | ||
| for IMAGE in $IMAGES_BUNDLED | ||
| do | ||
| echo "Removing $IMAGE from local image cache" | ||
| docker rmi $IMAGE | ||
| done | ||
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| #grep -vw "{{" templates/cluster/aws-hosted-cp/templates/k0smotroncontrolplane.yaml | ./bin/yq-v4.44.2 -e '.spec.k0sConfig.spec.extensions.helm.charts[] | select(.name == "aws-cloud-controller-manager") | .version' | ||
| #grep -vw "{{" templates/cluster/aws-hosted-cp/templates/k0smotroncontrolplane.yaml | ./bin/yq-v4.44.2 -e '.spec.k0sConfig.spec.extensions.helm.charts[] | select(.name == "aws-cloud-controller-manager") | .values' | ./bin/yq-v4.44.2 -e '.image.tag' |