ceph-csi/scripts/install-snapshot.sh
Humble Chirammal de2489ed7d deploy: update csi-snapshotter sidecar to v5.0.1
This release of snapshotter has a breaking change as mentioned
in the release note:

Refer#
[1]: https://github.com/kubernetes-csi/external-snapshotter/releases/tag/v5.0.0

RBAC rules are also updated with this commit.

Signed-off-by: Humble Chirammal <hchiramm@redhat.com>
2022-02-03 19:01:57 +00:00

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#!/bin/bash -e
# This script can be used to install/delete snapshotcontroller and snapshot beta CRD
SCRIPT_DIR="$(dirname "${0}")"
# shellcheck source=build.env
source "${SCRIPT_DIR}/../build.env"
SNAPSHOT_VERSION=${SNAPSHOT_VERSION:-"v5.0.1"}
TEMP_DIR="$(mktemp -d)"
SNAPSHOTTER_URL="https://raw.githubusercontent.com/kubernetes-csi/external-snapshotter/${SNAPSHOT_VERSION}"
# controller
SNAPSHOT_RBAC="${SNAPSHOTTER_URL}/deploy/kubernetes/snapshot-controller/rbac-snapshot-controller.yaml"
SNAPSHOT_CONTROLLER="${SNAPSHOTTER_URL}/deploy/kubernetes/snapshot-controller/setup-snapshot-controller.yaml"
# snapshot CRD
SNAPSHOTCLASS="${SNAPSHOTTER_URL}/client/config/crd/snapshot.storage.k8s.io_volumesnapshotclasses.yaml"
VOLUME_SNAPSHOT_CONTENT="${SNAPSHOTTER_URL}/client/config/crd/snapshot.storage.k8s.io_volumesnapshotcontents.yaml"
VOLUME_SNAPSHOT="${SNAPSHOTTER_URL}/client/config/crd/snapshot.storage.k8s.io_volumesnapshots.yaml"
function install_snapshot_controller() {
local namespace=$1
if [ -z "${namespace}" ]; then
namespace="kube-system"
fi
create_or_delete_resource "create" ${namespace}
pod_ready=$(kubectl get pods -l app=snapshot-controller -n ${namespace} -o jsonpath='{.items[0].status.containerStatuses[0].ready}')
INC=0
until [[ "${pod_ready}" == "true" || $INC -gt 20 ]]; do
sleep 10
((++INC))
pod_ready=$(kubectl get pods -l app=snapshot-controller -n ${namespace} -o jsonpath='{.items[0].status.containerStatuses[0].ready}')
echo "snapshotter pod status: ${pod_ready}"
done
if [ "${pod_ready}" != "true" ]; then
echo "snapshotter controller creation failed"
kubectl get pods -l app=snapshot-controller -n ${namespace}
kubectl describe po -l app=snapshot-controller -n ${namespace}
exit 1
fi
echo "snapshot controller creation successful"
}
function cleanup_snapshot_controller() {
local namespace=$1
if [ -z "${namespace}" ]; then
namespace="kube-system"
fi
create_or_delete_resource "delete" ${namespace}
}
function create_or_delete_resource() {
local operation=$1
local namespace=$2
temp_rbac=${TEMP_DIR}/snapshot-rbac.yaml
temp_snap_controller=${TEMP_DIR}/snapshot-controller.yaml
snapshotter_psp="${SCRIPT_DIR}/snapshot-controller-psp.yaml"
mkdir -p "${TEMP_DIR}"
curl -o "${temp_rbac}" "${SNAPSHOT_RBAC}"
curl -o "${temp_snap_controller}" "${SNAPSHOT_CONTROLLER}"
sed -i "s/namespace: kube-system/namespace: ${namespace}/g" "${temp_rbac}"
sed -i "s/namespace: kube-system/namespace: ${namespace}/g" "${temp_snap_controller}"
sed -i "s/namespace: kube-system/namespace: ${namespace}/g" "${snapshotter_psp}"
sed -i "s/canary/${SNAPSHOT_VERSION}/g" "${temp_snap_controller}"
kubectl "${operation}" -f "${temp_rbac}"
kubectl "${operation}" -f "${snapshotter_psp}"
kubectl "${operation}" -f "${temp_snap_controller}" -n "${namespace}"
kubectl "${operation}" -f "${SNAPSHOTCLASS}"
kubectl "${operation}" -f "${VOLUME_SNAPSHOT_CONTENT}"
kubectl "${operation}" -f "${VOLUME_SNAPSHOT}"
}
function delete_snapshot_crd() {
kubectl delete -f "${SNAPSHOTCLASS}" --ignore-not-found
kubectl delete -f "${VOLUME_SNAPSHOT_CONTENT}" --ignore-not-found
kubectl delete -f "${VOLUME_SNAPSHOT}" --ignore-not-found
}
# parse the kubernetes version
# v1.17.2 -> kube_version 1 -> 1 (Major)
# v1.17.2 -> kube_version 2 -> 17 (Minor)
function kube_version() {
echo "${KUBE_VERSION}" | sed 's/^v//' | cut -d'.' -f"${1}"
}
if ! get_kube_version=$(kubectl version --short) ||
[[ -z "${get_kube_version}" ]]; then
echo "could not get Kubernetes server version"
echo "hint: check if you have specified the right host or port"
exit 1
fi
KUBE_VERSION=$(echo "${get_kube_version}" | grep "^Server Version" | cut -d' ' -f3)
KUBE_MAJOR=$(kube_version 1)
KUBE_MINOR=$(kube_version 2)
# skip snapshot operation if kube version is less than 1.17.0
if [[ "${KUBE_MAJOR}" -lt 1 ]] || [[ "${KUBE_MAJOR}" -eq 1 && "${KUBE_MINOR}" -lt 17 ]]; then
echo "skipping: Kubernetes server version is < 1.17.0"
exit 1
fi
case "${1:-}" in
install)
install_snapshot_controller "$2"
;;
cleanup)
cleanup_snapshot_controller "$2"
;;
delete-crd)
delete_snapshot_crd
;;
*)
echo "usage:" >&2
echo " $0 install" >&2
echo " $0 cleanup" >&2
echo " $0 delete-crd" >&2
;;
esac