Add airgap-push script

This script can be used to push images and Helm charts needed for an
airgapped ManagedCluster deployment to a given image registry and chart
repository.

Signed-off-by: Kyle Squizzato <[email protected]>

scripts/airgap-push.sh

@@ -0,0 +1,152 @@
+#!/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.
+#
+# This script can be used to help users re-tag and push images and Helm charts
+# into a private registry for use when deploying HMC ManagedClusters into an
+# air-gapped environment.  This script is packaged as part of the airgap bundle
+# for convenience.
+# Usage:
+#  airgap-push.sh [OPTIONS]
+# Options:
+#  -h, --help
+#    Print this help message
+#  -r, --repo
+#    The repository to push the images to
+#  -c, --chart-repo
+#    The repository to push the Helm charts to
+#  -a, --airgap-bundle
+#    The path to the airgap bundle
+#!/bin/bash
+
+REPO=""
+CHART_REPO=""
+AIRGAP_BUNDLE=""
+HELP=""
+
+# Parse the options
+while [[ $# -gt 0 ]]; do
+    key="$1"
+    case $key in
+        -h|--help)
+            HELP="true"
+            shift
+            ;;
+        -r|--image-repo)
+            REPO="$2"
+            shift
+            shift
+            ;;
+        -c|--chart-repo)
+            CHART_REPO="$2"
+            shift
+            shift
+            ;;
+        -u|--username)
+            USERNAME="$2"
+            shift
+            shift
+            ;;
+        -p|--password)
+            PASSWORD="$2"
+            shift
+            shift
+            ;;
+        -a|--airgap-bundle)
+            AIRGAP_BUNDLE="$2"
+            shift
+            shift
+            ;;
+        *)
+            echo "Unknown option: $1"
+            exit 1
+            ;;
+    esac
+done
+
+# Print the help message
+print_help() {
+    echo "Usage:"
+    echo "  airgap-push.sh [OPTIONS]"
+    echo "Options:"
+    echo "  -h, --help"
+    echo "    Print this help message"
+    echo "  -r, --image-repo (required)"
+    echo "    The image repo to push the images to, if you do not wish to push the images to a specific repo, set this value to your registry URL"
+    echo "  -c, --chart-repo (required)"
+    echo "    The repository to push the Helm charts to, for OCI prefix with oci://"
+    echo "  -u, --username (required)"
+    echo "    The username to use for the registry"
+    echo "  -p, --password (required)"
+    echo "    The password to use for the registry"
+    echo "  -a, --airgap-bundle (required)"
+    echo "    The path to the airgap bundle"
+}
+
+if [ ! -z "$HELP" ]; then
+    print_help
+    exit 0
+fi
+
+if [ -z "$NEW_REPO" ]; then
+    echo "The repository must be set"
+    print_help
+    exit 1
+fi
+
+if [ -z "$CHART_REPO" ]; then
+    echo "The chart repository must be set"
+    print_help
+    exit 1
+fi
+
+if [ -z "$AIRGAP_BUNDLE" ]; then
+    echo "The airgap bundle must be set"
+    exit 1
+else
+    # Validate the airgap bundle
+    if [ ! -d "$AIRGAP_BUNDLE" ]; then
+        echo "The provided airgap bundle: $AIRGAP_BUNDLE does not exist"
+        exit 1
+    fi
+fi
+
+# Load the images into the local Docker daemon.
+docker load -i $AIRGAP_BUNDLE
+
+# Extract the repositories json file from the airgap bundle.
+tar xf $AIRGAP_BUNDLE "repositories"
+
+# Iterate over the images in the repositories json file and retag and push them
+# to the given repository.
+docker login $REPO -u $USERNAME -p $PASSWORD
+
+for IMAGE in $(cat repositories | jq -r 'to_entries[] | .key'); do
+    IMAGE_NAME=$(echo $IMAGE | grep -o '[^/]*$')
+    OLD_IMAGE=$(docker images -a | grep $IMAGE | awk '{print $1":"$2}')
+    TAG=$OLD_IMAGE | awk -F ":" '{print $2}'
+
+    docker tag $OLD_IMAGE $REPO/$IMAGE_NAME:$TAG
+    docker push $REPO/$IMAGE_NAME:$TAG
+done
+
+# Next, use Helm to push the charts to the given chart repository.
+mkdir -p hmc_charts
+tar xf $AIRGAP_BUNDLE "charts/extensions" -C hmc_charts/
+
+helm registry login $CHART_REPO -u $USERNAME -p $PASSWORD
+
+for CHART in $(ls hmc_charts/extensions); do
+    helm push hmc_charts/extensions/$CHART $CHART_REPO
+done