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validate.sh
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validate.sh
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#!/usr/bin/env bash
# This script downloads the Flux OpenAPI schemas, then it validates the
# Flux custom resources and the kustomize overlays using kubeval.
# This script is meant to be run locally and in CI before the changes
# are merged on the main branch that's synced by Flux.
# Copyright 2020 The Flux authors. All rights reserved.
#
# 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 is meant to be run locally and in CI to validate the Kubernetes
# manifests (including Flux custom resources) before changes are merged into
# the branch synced by Flux in-cluster.
# Prerequisites
# - yq v4.6
# - kustomize v4.1
# - kubeval v0.15
set -o errexit
echo "INFO - Downloading Flux OpenAPI schemas"
mkdir -p /tmp/flux-crd-schemas/master-standalone-strict
curl -sL https://github.com/fluxcd/flux2/releases/latest/download/crd-schemas.tar.gz | tar zxf - -C /tmp/flux-crd-schemas/master-standalone-strict
find . -type f -name '*.yaml' -print0 | while IFS= read -r -d $'\0' file;
do
echo "INFO - Validating $file"
yq e 'true' "$file" > /dev/null
done
echo "INFO - Validating clusters"
find ./clusters -maxdepth 2 -type f -name '*.yaml' -print0 | while IFS= read -r -d $'\0' file;
do
kubeval ${file} --strict --ignore-missing-schemas --additional-schema-locations=file:///tmp/flux-crd-schemas
if [[ ${PIPESTATUS[0]} != 0 ]]; then
exit 1
fi
done
# mirror kustomize-controller build options
kustomize_flags="--load-restrictor=LoadRestrictionsNone --reorder=legacy"
kustomize_config="kustomization.yaml"
echo "INFO - Validating kustomize overlays"
find . -type f -name $kustomize_config -print0 | while IFS= read -r -d $'\0' file;
do
echo "INFO - Validating kustomization ${file/%$kustomize_config}"
kustomize build "${file/%$kustomize_config}" $kustomize_flags | \
kubeval --ignore-missing-schemas --strict --additional-schema-locations=file:///tmp/flux-crd-schemas
if [[ ${PIPESTATUS[0]} != 0 ]]; then
exit 1
fi
done