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Airgapped install support #175

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Airgapped install support #175

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fceba58
capi-operator example for airgapped installation
nbykov0 Jun 19, 2024
1af8b85
Add scripts for dockerfile update and docker image build/push
nbykov0 Jun 19, 2024
cffb825
mv scripts to /hack
nbykov0 Jun 20, 2024
b4ad5f8
dynamic targets for images
nbykov0 Jun 24, 2024
dceff77
Update values.yaml with image metadata after build
nbykov0 Jun 24, 2024
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12 changes: 11 additions & 1 deletion packages/system/capi-operator/Makefile
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Original file line number Diff line number Diff line change
@@ -1,11 +1,21 @@
NAME=capi-operator
NAMESPACE=cozy-cluster-api
TYPE=system

include ../../../scripts/common-envs.mk
include ../../../scripts/package-system.mk

update:
update: update-charts update-dockerfiles

update-charts:
rm -rf charts
helm repo add capi-operator https://kubernetes-sigs.github.io/cluster-api-operator
helm repo update capi-operator
helm pull capi-operator/cluster-api-operator --untar --untardir charts
rm -rf charts/cluster-api-operator/charts

update-dockerfiles:
../../../scripts/update-dockerfiles.sh with_helm
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image:
../../../scripts/build-images.sh $(REGISTRY) $(NAME) $(TYPE) $(PUSH) $(LOAD)
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1 change: 1 addition & 0 deletions packages/system/capi-operator/images/cluster-api-operator/Dockerfile
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@@ -0,0 +1 @@
FROM registry.k8s.io/capi-operator/cluster-api-operator:v0.8.1
28 changes: 28 additions & 0 deletions scripts/build-images.sh
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@@ -0,0 +1,28 @@
#!/usr/bin/env bash

set -o pipefail
set -e

REGISTRY=$1
NAME=$2
TYPE=$3
PUSH=$4
LOAD=$5

# an example for packages/system/capi-operator, native image and transformed one
# registry.k8s.io/capi-operator/cluster-api-operator:v0.8.1
# ghcr.io/aenix-io/cozystack/system/capi-operator/cluster-api-operator:v0.8.1

find images -mindepth 1 -maxdepth 1 -type d | \
while read dockerfile_path; do
image_name=$(echo $dockerfile_path | awk -F/ '{print $2}')
tag=$(egrep -o "FROM .*$image_name.*" $dockerfile_path/Dockerfile | awk -F: '{print $NF}')
docker buildx build $dockerfile_path \
--provenance=false \
--tag=$REGISTRY/$TYPE/$image_name:$tag \
--cache-from=type=registry,ref=$REGISTRY/$TYPE/$image_name:latest \
--cache-to=type=inline \
--push=$PUSH \
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--load=$LOAD
done

32 changes: 32 additions & 0 deletions scripts/update-dockerfiles.sh
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@@ -0,0 +1,32 @@
#!/usr/bin/env bash

set -o pipefail
set -e

function update_dockerfile() {
local image=$1
local image_name=$(echo $image | awk -F/ '{print $NF}' | awk -F: '{print $1}')

[[ -z $image_name ]] && { echo "image_name is empty for image: $image">&2; exit 1; }
mkdir -p images/$image_name
if [[ ! -f images/$image_name/Dockerfile ]];
then
echo "FROM $image" > images/$image_name/Dockerfile
else
sed -i "s|FROM .*$image_name.*|FROM $image|" images/$image_name/Dockerfile
fi
}


function with_helm() {
helm template . | awk '/^[ \t"-]*image["]*: [a-zA-Z0-9/:@"\.-]+$/{print $NF}' | sed 's/"//g' | \
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This wont work, because we have to replace all the images with ours in the helm chart, the output of helm template . will always return our values. Try parsing upstream helm chart instead

while read image; do
update_dockerfile $image
done
}

function with_grep() {
}

[[ -z $1 ]] && with_helm || $1