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Merge pull request #11024 from microsoft/danmihai1/empty-exec-output

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tests: k8s: retry "kubectl exec" on empty output
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Dan Mihai 2025-03-20 11:03:08 -07:00 committed by GitHub
commit f79fabab24
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1 changed files with 18 additions and 3 deletions
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21
tests/integration/kubernetes/tests_common.sh
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@ -378,6 +378,9 @@ teardown_common() {
# Invoke "kubectl exec", log its output, and check that a grep pattern is present in the output.
#
# Retry "kubectl exec" several times in case it unexpectedly returns an empty output string,
# in an attempt to work around issues similar to https://github.com/kubernetes/kubernetes/issues/124571.
#
# Parameters:
# $1 - pod name
# $2 - the grep pattern
@ -388,8 +391,20 @@ grep_pod_exec_output() {
shift
local -r grep_arg="$1"
shift
local grep_out=""
local cmd_out=""
local -r pod_env=$(kubectl exec "${pod_name}" -- "$@")
info "pod_env: ${pod_env}"
echo "${pod_env}" | grep "${grep_arg}"
for _ in {1..10}; do
info "Executing in pod ${pod_name}: $*"
cmd_out=$(kubectl exec "${pod_name}" -- "$@")
if [[ -n "${cmd_out}" ]]; then
info "command output: ${cmd_out}"
grep_out=$(echo "${cmd_out}" | grep "${grep_arg}")
info "grep output: ${grep_out}"
break
fi
warn "Empty output from kubectl exec"
sleep 1
done
[[ -n "${grep_out}" ]]
}