kubernetes/cluster/saltbase/install.sh
Zach Loafman 60e1fccc7f Regional registries: Hack the manifests!
Allow the gcr.io/google_containers registry to be overridden
regionally by just blasting a new KUBE_ADDON_REGISTRY out. Instead of
adding every addon to Salt and asking all of the other consumers
(Trusty, Juju, Mesos, etc) to change, just script the sed ourselves.

This is probably the 9th grossest thing I've ever done, but it works
well, and it works quickly. I kind of wish it didn't.
2016-03-04 20:00:54 -08:00

111 lines
3.9 KiB
Bash
Executable File

#!/bin/bash
# Copyright 2014 The Kubernetes 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 will set up the salt directory on the target server. It takes one
# argument that is a tarball with the pre-compiled kubernetes server binaries.
set -o errexit
set -o nounset
set -o pipefail
SALT_ROOT=$(dirname "${BASH_SOURCE}")
readonly SALT_ROOT
readonly KUBE_DOCKER_WRAPPED_BINARIES=(
kube-apiserver
kube-controller-manager
kube-scheduler
kube-proxy
)
readonly SERVER_BIN_TAR=${1-}
if [[ -z "$SERVER_BIN_TAR" ]]; then
echo "!!! No binaries specified"
exit 1
fi
# Create a temp dir for untaring
KUBE_TEMP=$(mktemp --tmpdir=/srv -d -t kubernetes.XXXXXX)
trap 'rm -rf "${KUBE_TEMP}"' EXIT
# This file is meant to run on the master. It will install the salt configs
# into the appropriate place on the master. We do this by creating a new set of
# salt trees and then quickly mv'ing them where the old ones were.
readonly SALTDIRS=(salt pillar reactor)
echo "+++ Installing salt files into new trees"
rm -rf /srv/salt-new
mkdir -p /srv/salt-new
# This bash voodoo will prepend $SALT_ROOT to the start of each item in the
# $SALTDIRS array
cp -v -R --preserve=mode "${SALTDIRS[@]/#/${SALT_ROOT}/}" /srv/salt-new
echo "+++ Installing salt overlay files"
for dir in "${SALTDIRS[@]}"; do
if [[ -d "/srv/salt-overlay/$dir" ]]; then
cp -v -R --preserve=mode "/srv/salt-overlay/$dir" "/srv/salt-new/"
fi
done
echo "+++ Install binaries from tar: $1"
tar -xz -C "${KUBE_TEMP}" -f "$1"
mkdir -p /srv/salt-new/salt/kube-bins
mkdir -p /srv/salt-new/salt/kube-addons-images
mkdir -p /srv/salt-new/salt/kube-docs
cp -v "${KUBE_TEMP}/kubernetes/server/bin/"* /srv/salt-new/salt/kube-bins/
cp -v "${KUBE_TEMP}/kubernetes/addons/"* /srv/salt-new/salt/kube-addons-images/
cp -v "${KUBE_TEMP}/kubernetes/LICENSES" /srv/salt-new/salt/kube-docs/
kube_bin_dir="/srv/salt-new/salt/kube-bins";
docker_images_sls_file="/srv/salt-new/pillar/docker-images.sls";
for docker_file in "${KUBE_DOCKER_WRAPPED_BINARIES[@]}"; do
docker_tag=$(cat ${kube_bin_dir}/${docker_file}.docker_tag);
if [[ ! -z "${KUBE_IMAGE_TAG:-}" ]]; then
docker_tag="${KUBE_IMAGE_TAG}"
fi
sed -i "s/#${docker_file}_docker_tag_value#/${docker_tag}/" "${docker_images_sls_file}";
done
cat <<EOF >>"${docker_images_sls_file}"
kube_docker_registry: '$(echo ${KUBE_DOCKER_REGISTRY:-gcr.io/google_containers})'
EOF
# TODO(zmerlynn): Forgive me, this is really gross. But in order to
# avoid breaking the non-Salt deployments, which already painfully
# have to templatize a couple of the add-ons anyways, manually
# templatize the addon registry for regional support. When we get
# better templating, we can fix this.
readonly kube_addon_registry="${KUBE_ADDON_REGISTRY:-gcr.io/google_containers}"
if [[ "${kube_addon_registry}" != "gcr.io/google_containers" ]]; then
find /srv/salt-new -name \*.yaml -or -name \*.yaml.in | \
xargs sed -ri "s@(image:\s.*)gcr.io/google_containers@\1${kube_addon_registry}@"
# All the legacy .manifest files with hardcoded gcr.io are JSON.
find /srv/salt-new -name \*.manifest -or -name \*.json | \
xargs sed -ri "s@(image\":\s+\")gcr.io/google_containers@\1${kube_addon_registry}@"
fi
echo "+++ Swapping in new configs"
for dir in "${SALTDIRS[@]}"; do
if [[ -d "/srv/$dir" ]]; then
rm -rf "/srv/$dir"
fi
mv -v "/srv/salt-new/$dir" "/srv/$dir"
done
rm -rf /srv/salt-new