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Merge pull request #42780 from Random-Liu/handle-npd-in-cluster-upgrade

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Automatic merge from submit-queue (batch tested with PRs 42024, 42780, 42808, 42640)

Handle NPD during cluster upgrade.

Generate NPD token during upgrade.

I could not fully verify this change because of https://github.com/kubernetes/kubernetes/issues/42199. However, at least I tried upgrade master, and the corresponding environment variables are correctly generated.
```
...
ENABLE_NODE_PROBLEM_DETECTOR: 'standalone'
...
KUBELET_TOKEN: 'PKNgAaVXeL3VojND2s0KMleELjzGK0oW'
```

@maisem @dchen1107
This commit is contained in:
Kubernetes Submit Queue 2017-03-09 16:41:50 -08:00 committed by GitHub
commit dcdf11a914
3 changed files with 24 additions and 2 deletions
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1
cluster/gce/config-default.sh
View File

@ -148,7 +148,6 @@ ENABLE_CLUSTER_UI="${KUBE_ENABLE_CLUSTER_UI:-true}"
# standalone - Run node problem detector as standalone system daemon.
if [[ "${NODE_OS_DISTRIBUTION}" == "gci" ]]; then
# Enable standalone mode by default for gci.
# TODO: Consider upgrade test.
ENABLE_NODE_PROBLEM_DETECTOR="${KUBE_ENABLE_NODE_PROBLEM_DETECTOR:-standalone}"
else
ENABLE_NODE_PROBLEM_DETECTOR="${KUBE_ENABLE_NODE_PROBLEM_DETECTOR:-daemonset}"

1
cluster/gce/config-test.sh
View File

@ -173,7 +173,6 @@ ENABLE_CLUSTER_UI="${KUBE_ENABLE_CLUSTER_UI:-true}"
# standalone - Run node problem detector as standalone system daemon.
if [[ "${NODE_OS_DISTRIBUTION}" == "gci" ]]; then
# Enable standalone mode by default for gci.
# TODO: Consider upgrade test.
ENABLE_NODE_PROBLEM_DETECTOR="${KUBE_ENABLE_NODE_PROBLEM_DETECTOR:-standalone}"
else
ENABLE_NODE_PROBLEM_DETECTOR="${KUBE_ENABLE_NODE_PROBLEM_DETECTOR:-daemonset}"

24
cluster/gce/upgrade.sh
View File

@ -88,6 +88,8 @@ function upgrade-master() {
detect-master
parse-master-env
upgrade-master-env
backfile-kubeletauth-certs
# Delete the master instance. Note that the master-pd is created
@ -102,6 +104,15 @@ function upgrade-master() {
wait-for-master
}
function upgrade-master-env() {
echo "== Upgrading master environment variables. =="
# Generate the node problem detector token if it isn't present on the original
# master.
if [[ "${ENABLE_NODE_PROBLEM_DETECTOR:-}" == "standalone" && "${NODE_PROBLEM_DETECTOR_TOKEN:-}" == "" ]]; then
NODE_PROBLEM_DETECTOR_TOKEN=$(dd if=/dev/urandom bs=128 count=1 2>/dev/null | base64 | tr -d "=+/" | dd bs=32 count=1 2>/dev/null)
fi
}
# TODO(mikedanese): delete when we don't support < 1.6
function backfile-kubeletauth-certs() {
if [[ ! -z "${KUBEAPISERVER_CERT_BASE64:-}" && ! -z "${KUBEAPISERVER_CERT_BASE64:-}" ]]; then
@ -282,6 +293,8 @@ function prepare-node-upgrade() {
KUBELET_CERT_BASE64=$(get-env-val "${node_env}" "KUBELET_CERT")
KUBELET_KEY_BASE64=$(get-env-val "${node_env}" "KUBELET_KEY")
upgrade-node-env
# TODO(zmerlynn): How do we ensure kube-env is written in a ${version}-
# compatible way?
write-node-env
@ -295,6 +308,17 @@ function prepare-node-upgrade() {
echo "== Finished preparing node upgrade (to ${KUBE_VERSION}). ==" >&2
}
function upgrade-node-env() {
echo "== Upgrading node environment variables. =="
# Get the node problem detector token from master if it isn't present on
# the original node.
if [[ "${ENABLE_NODE_PROBLEM_DETECTOR:-}" == "standalone" && "${NODE_PROBLEM_DETECTOR_TOKEN:-}" == "" ]]; then
detect-master
local master_env=$(get-master-env)
NODE_PROBLEM_DETECTOR_TOKEN=$(get-env-val "${master_env}" "NODE_PROBLEM_DETECTOR_TOKEN")
fi
}
# Prereqs:
# - prepare-node-upgrade should have been called successfully
function do-node-upgrade() {