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Merge pull request #67639 from mborsz/validate-cluster

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Automatic merge from submit-queue (batch tested with PRs 67655, 67639). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Fix validate-cluster.sh for clusters with more than 500 nodes.

**What this PR does / why we need it**:

Without the change, validate-cluster.sh counts nodes using 'wc -l' minus one (header).
kubectl repeats header every 500 rows, so for bigger clusters this doesn't work.

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #67597

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```
This commit is contained in:
Kubernetes Submit Queue 2018-08-22 04:25:03 -07:00 committed by GitHub
commit 0e31372b2f
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1 changed files with 10 additions and 3 deletions
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13
cluster/validate-cluster.sh
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@ -98,7 +98,13 @@ while true; do
#
# We are assigning the result of kubectl_retry get nodes operation to the res
# variable in that way, to prevent stopping the whole script on an error.
node=$(kubectl_retry get nodes) && res="$?" || res="$?"
#
# Bash command substitution $(kubectl_...) removes all trailing whitespaces
# which are important for line counting.
# Use trick from https://unix.stackexchange.com/a/383411 to avoid
# newline truncation.
node=$(kubectl_retry get nodes --no-headers; ret=$?; echo .; exit "$ret") && res="$?" || res="$?"
node="${node%.}"
if [ "${res}" -ne "0" ]; then
if [[ "${attempt}" -gt "${last_run:-$MAX_ATTEMPTS}" ]]; then
echo -e "${color_red} Failed to get nodes.${color_norm}"
@ -107,8 +113,9 @@ while true; do
continue
fi
fi
found=$(($(echo "${node}" | wc -l) - 1))
ready=$(($(echo "${node}" | grep -v "NotReady" | wc -l ) - 1))
found=$(echo -n "${node}" | wc -l)
# Use grep || true so that empty result doesn't return nonzero exit code.
ready=$(echo -n "${node}" | grep -c -v "NotReady" || true)
if (( "${found}" == "${EXPECTED_NUM_NODES}" )) && (( "${ready}" == "${EXPECTED_NUM_NODES}")); then
break