mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-09-20 07:29:50 +00:00
181 lines
6.8 KiB
Bash
Executable File
181 lines
6.8 KiB
Bash
Executable File
#!/bin/bash
|
|
|
|
# Copyright 2014 The Kubernetes Authors.
|
|
#
|
|
# 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.
|
|
|
|
# Validates that the cluster is healthy.
|
|
# Error codes are:
|
|
# 0 - success
|
|
# 1 - fatal (cluster is unlikely to work)
|
|
# 2 - non-fatal (encountered some errors, but cluster should be working correctly)
|
|
|
|
set -o errexit
|
|
set -o nounset
|
|
set -o pipefail
|
|
|
|
KUBE_ROOT=$(dirname "${BASH_SOURCE}")/..
|
|
|
|
if [ -f "${KUBE_ROOT}/cluster/env.sh" ]; then
|
|
source "${KUBE_ROOT}/cluster/env.sh"
|
|
fi
|
|
|
|
source "${KUBE_ROOT}/hack/lib/util.sh"
|
|
source "${KUBE_ROOT}/cluster/kube-util.sh"
|
|
|
|
# Run kubectl and retry upon failure.
|
|
function kubectl_retry() {
|
|
tries=3
|
|
while ! "${KUBE_ROOT}/cluster/kubectl.sh" "$@"; do
|
|
tries=$((tries-1))
|
|
if [[ ${tries} -le 0 ]]; then
|
|
echo "('kubectl $@' failed, giving up)" >&2
|
|
return 1
|
|
fi
|
|
echo "(kubectl failed, will retry ${tries} times)" >&2
|
|
sleep 1
|
|
done
|
|
}
|
|
|
|
ALLOWED_NOTREADY_NODES="${ALLOWED_NOTREADY_NODES:-0}"
|
|
CLUSTER_READY_ADDITIONAL_TIME_SECONDS="${CLUSTER_READY_ADDITIONAL_TIME_SECONDS:-30}"
|
|
|
|
EXPECTED_NUM_NODES="${NUM_NODES}"
|
|
|
|
if [[ "${KUBERNETES_PROVIDER:-}" == "gce" ]]; then
|
|
echo "Validating gce cluster, MULTIZONE=${MULTIZONE:-}"
|
|
# In multizone mode we need to add instances for all nodes in the region.
|
|
if [[ "${MULTIZONE:-}" == "true" ]]; then
|
|
EXPECTED_NUM_NODES=$(gcloud -q compute instances list --project="${PROJECT}" --format=[no-heading] \
|
|
--filter="name ~ '${NODE_INSTANCE_PREFIX}.*' AND zone:($(gcloud -q compute zones list --project="${PROJECT}" --filter=region=${REGION} --format=csv[no-heading]\(name\) | tr "\n" "," | sed "s/,$//"))" | wc -l)
|
|
echo "Computing number of nodes, NODE_INSTANCE_PREFIX=${NODE_INSTANCE_PREFIX}, REGION=${REGION}, EXPECTED_NUM_NODES=${EXPECTED_NUM_NODES}"
|
|
fi
|
|
fi
|
|
|
|
if [[ "${REGISTER_MASTER_KUBELET:-}" == "true" ]]; then
|
|
if [[ "${KUBERNETES_PROVIDER:-}" == "gce" ]]; then
|
|
NUM_MASTERS=$(get-master-replicas-count)
|
|
else
|
|
NUM_MASTERS=1
|
|
fi
|
|
EXPECTED_NUM_NODES=$((EXPECTED_NUM_NODES+NUM_MASTERS))
|
|
fi
|
|
|
|
REQUIRED_NUM_NODES=$((EXPECTED_NUM_NODES - ALLOWED_NOTREADY_NODES))
|
|
# Make several attempts to deal with slow cluster birth.
|
|
return_value=0
|
|
attempt=0
|
|
# Set the timeout to ~25minutes (100 x 15 second) to avoid timeouts for 1000-node clusters.
|
|
PAUSE_BETWEEN_ITERATIONS_SECONDS=15
|
|
MAX_ATTEMPTS=100
|
|
ADDITIONAL_ITERATIONS=$(((CLUSTER_READY_ADDITIONAL_TIME_SECONDS + PAUSE_BETWEEN_ITERATIONS_SECONDS - 1)/PAUSE_BETWEEN_ITERATIONS_SECONDS))
|
|
while true; do
|
|
# Pause between iterations of this large outer loop.
|
|
if [[ ${attempt} -gt 0 ]]; then
|
|
sleep 15
|
|
fi
|
|
attempt=$((attempt+1))
|
|
|
|
# The "kubectl get nodes -o template" exports node information.
|
|
#
|
|
# Echo the output and gather 2 counts:
|
|
# - Total number of nodes.
|
|
# - Number of "ready" nodes.
|
|
#
|
|
# Suppress errors from kubectl output because during cluster bootstrapping
|
|
# for clusters where the master node is registered, the apiserver will become
|
|
# available and then get restarted as the kubelet configures the docker bridge.
|
|
#
|
|
# We are assigning the result of kubectl_retry get nodes operation to the res
|
|
# varaible in that way, to prevent stopping the whole script on an error.
|
|
node=$(kubectl_retry get nodes) && res="$?" || res="$?"
|
|
if [ "${res}" -ne "0" ]; then
|
|
if [[ "${attempt}" -gt "${last_run:-$MAX_ATTEMPTS}" ]]; then
|
|
echo -e "${color_red} Failed to get nodes.${color_norm}"
|
|
exit 1
|
|
else
|
|
continue
|
|
fi
|
|
fi
|
|
found=$(($(echo "${node}" | wc -l) - 1))
|
|
ready=$(($(echo "${node}" | grep -v "NotReady" | wc -l ) - 1))
|
|
|
|
if (( "${found}" == "${EXPECTED_NUM_NODES}" )) && (( "${ready}" == "${EXPECTED_NUM_NODES}")); then
|
|
break
|
|
elif (( "${found}" > "${EXPECTED_NUM_NODES}" )); then
|
|
if [[ "${KUBE_USE_EXISTING_MASTER:-}" != "true" ]]; then
|
|
echo -e "${color_red}Found ${found} nodes, but expected ${EXPECTED_NUM_NODES}. Your cluster may not behave correctly.${color_norm}"
|
|
fi
|
|
break
|
|
elif (( "${ready}" > "${EXPECTED_NUM_NODES}")); then
|
|
echo -e "${color_red}Found ${ready} ready nodes, but expected ${EXPECTED_NUM_NODES}. Your cluster may not behave correctly.${color_norm}"
|
|
break
|
|
else
|
|
if [[ "${REQUIRED_NUM_NODES}" -le "${ready}" ]]; then
|
|
echo -e "${color_green}Found ${REQUIRED_NUM_NODES} Nodes, allowing additional ${ADDITIONAL_ITERATIONS} iterations for other Nodes to join.${color_norm}"
|
|
last_run="${last_run:-$((attempt + ADDITIONAL_ITERATIONS - 1))}"
|
|
fi
|
|
if [[ "${attempt}" -gt "${last_run:-$MAX_ATTEMPTS}" ]]; then
|
|
echo -e "${color_yellow}Detected ${ready} ready nodes, found ${found} nodes out of expected ${EXPECTED_NUM_NODES}. Your cluster may not be fully functional.${color_norm}"
|
|
kubectl_retry get nodes
|
|
if [[ "${REQUIRED_NUM_NODES}" -gt "${ready}" ]]; then
|
|
exit 1
|
|
else
|
|
return_value=2
|
|
break
|
|
fi
|
|
else
|
|
echo -e "${color_yellow}Waiting for ${EXPECTED_NUM_NODES} ready nodes. ${ready} ready nodes, ${found} registered. Retrying.${color_norm}"
|
|
fi
|
|
fi
|
|
done
|
|
echo "Found ${found} node(s)."
|
|
kubectl_retry get nodes
|
|
|
|
attempt=0
|
|
while true; do
|
|
# The "kubectl componentstatuses -o template" exports components health information.
|
|
#
|
|
# Echo the output and gather 2 counts:
|
|
# - Total number of componentstatuses.
|
|
# - Number of "healthy" components.
|
|
cs_status=$(kubectl_retry get componentstatuses -o template --template='{{range .items}}{{with index .conditions 0}}{{.type}}:{{.status}}{{end}}{{"\n"}}{{end}}') || true
|
|
componentstatuses=$(echo "${cs_status}" | grep -c 'Healthy:') || true
|
|
healthy=$(echo "${cs_status}" | grep -c 'Healthy:True') || true
|
|
|
|
if ((componentstatuses > healthy)) || ((componentstatuses == 0)); then
|
|
if ((attempt < 5)); then
|
|
echo -e "${color_yellow}Cluster not working yet.${color_norm}"
|
|
attempt=$((attempt+1))
|
|
sleep 30
|
|
else
|
|
echo -e " ${color_yellow}Validate output:${color_norm}"
|
|
kubectl_retry get cs
|
|
echo -e "${color_red}Validation returned one or more failed components. Cluster is probably broken.${color_norm}"
|
|
exit 1
|
|
fi
|
|
else
|
|
break
|
|
fi
|
|
done
|
|
|
|
echo "Validate output:"
|
|
kubectl_retry get cs || true
|
|
if [ "${return_value}" == "0" ]; then
|
|
echo -e "${color_green}Cluster validation succeeded${color_norm}"
|
|
else
|
|
echo -e "${color_yellow}Cluster validation encountered some problems, but cluster should be in working order${color_norm}"
|
|
fi
|
|
|
|
exit "${return_value}"
|