github/kubernetes
1
0
Fork 0
mirror of https://github.com/k3s-io/kubernetes.git synced 2025-07-24 04:06:03 +00:00
Code Issues Projects Releases Wiki Activity

Use BootID instead of ExternalID to check for new instance

Browse Source 
PR 60692 changed the way that ExternalID is reported on GCE. Its value
is no longer the GCE instance ID. It is the instance name. So it
cannot be used to determine VM uniqueness across time. Instead,
upgrade will check that the boot ID changed.
This commit is contained in:
Kris 2018-04-20 16:27:42 -07:00
parent 214ce6572d
commit 1ed1cf6ef3
1 changed files with 19 additions and 39 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

58
cluster/gce/upgrade.sh
View File

@ -291,18 +291,17 @@ function upgrade-node-env() {
# Note: This is called multiple times from do-node-upgrade() in parallel, so should be thread-safe.
function do-single-node-upgrade() {
local -r instance="$1"
instance_id=$(gcloud compute instances describe "${instance}" \
--format='get(id)' \
--project="${PROJECT}" \
--zone="${ZONE}" 2>&1) && describe_rc=$? || describe_rc=$?
if [[ "${describe_rc}" != 0 ]]; then
echo "== FAILED to describe ${instance} =="
echo "${instance_id}"
return ${describe_rc}
local kubectl_rc
local boot_id=$("${KUBE_ROOT}/cluster/kubectl.sh" get node "${instance}" --output=jsonpath='{.status.nodeInfo.bootID}' 2>&1) && kubectl_rc=$? || kubectl_rc=$?
if [[ "${kubectl_rc}" != 0 ]]; then
echo "== FAILED to get bootID ${instance} =="
echo "${boot_id}"
return ${kubectl_rc}
fi
# Drain node
echo "== Draining ${instance}. == " >&2
local drain_rc
"${KUBE_ROOT}/cluster/kubectl.sh" drain --delete-local-data --force --ignore-daemonsets "${instance}" \
&& drain_rc=$? || drain_rc=$?
if [[ "${drain_rc}" != 0 ]]; then
@ -312,7 +311,8 @@ function do-single-node-upgrade() {
# Recreate instance
echo "== Recreating instance ${instance}. ==" >&2
recreate=$(gcloud compute instance-groups managed recreate-instances "${group}" \
local recreate_rc
local recreate=$(gcloud compute instance-groups managed recreate-instances "${group}" \
--project="${PROJECT}" \
--zone="${ZONE}" \
--instances="${instance}" 2>&1) && recreate_rc=$? || recreate_rc=$?
@ -322,42 +322,22 @@ function do-single-node-upgrade() {
return ${recreate_rc}
fi
# Wait for instance to be recreated
echo "== Waiting for instance ${instance} to be recreated. ==" >&2
while true; do
new_instance_id=$(gcloud compute instances describe "${instance}" \
--format='get(id)' \
--project="${PROJECT}" \
--zone="${ZONE}" 2>&1) && describe_rc=$? || describe_rc=$?
if [[ "${describe_rc}" != 0 ]]; then
echo "== FAILED to describe ${instance} =="
echo "${new_instance_id}"
echo " (Will retry.)"
elif [[ "${new_instance_id}" == "${instance_id}" ]]; then
echo -n .
else
echo "Instance ${instance} recreated."
break
fi
sleep 1
done
# Wait for k8s node object to reflect new instance id
# Wait for node status to reflect a new boot ID. This guarantees us
# that the node status in the API is from a different boot. This
# does not guarantee that the status is from the upgraded node, but
# it is a best effort approximation.
echo "== Waiting for new node to be added to k8s. ==" >&2
while true; do
external_id=$("${KUBE_ROOT}/cluster/kubectl.sh" get node "${instance}" --output=jsonpath='{.spec.externalID}' 2>&1) && kubectl_rc=$? || kubectl_rc=$?
local new_boot_id=$("${KUBE_ROOT}/cluster/kubectl.sh" get node "${instance}" --output=jsonpath='{.status.nodeInfo.bootID}' 2>&1) && kubectl_rc=$? || kubectl_rc=$?
if [[ "${kubectl_rc}" != 0 ]]; then
echo "== FAILED to get node ${instance} =="
echo "${external_id}"
echo "${boot_id}"
echo " (Will retry.)"
elif [[ "${external_id}" == "${new_instance_id}" ]]; then
elif [[ "${boot_id}" != "${new_boot_id}" ]]; then
echo "Node ${instance} recreated."
break
elif [[ "${external_id}" == "${instance_id}" ]]; then
echo -n .
else
echo "Unexpected external_id '${external_id}' matches neither old ('${instance_id}') nor new ('${new_instance_id}')."
echo " (Will retry.)"
echo -n .
fi
sleep 1
done
@ -366,8 +346,8 @@ function do-single-node-upgrade() {
# Ready=True.
echo "== Waiting for ${instance} to become ready. ==" >&2
while true; do
cordoned=$("${KUBE_ROOT}/cluster/kubectl.sh" get node "${instance}" --output='jsonpath={.status.conditions[?(@.type == "SchedulingDisabled")].status}')
ready=$("${KUBE_ROOT}/cluster/kubectl.sh" get node "${instance}" --output='jsonpath={.status.conditions[?(@.type == "Ready")].status}')
local cordoned=$("${KUBE_ROOT}/cluster/kubectl.sh" get node "${instance}" --output='jsonpath={.status.conditions[?(@.type == "SchedulingDisabled")].status}')
local ready=$("${KUBE_ROOT}/cluster/kubectl.sh" get node "${instance}" --output='jsonpath={.status.conditions[?(@.type == "Ready")].status}')
if [[ "${cordoned}" == 'True' ]]; then
echo "Node ${instance} is still not ready: SchedulingDisabled=${ready}"
elif [[ "${ready}" != 'True' ]]; then