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tests: k8s: avoid deleting unrelated pods

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Delete the debugger pod created during the test, rather than already
existing debugger pods.

Also, send the output of "kubectl delete" to stderr, just in case it's
useful for debugging.

Fixes: #9069

Signed-off-by: Dan Mihai <dmihai@microsoft.com>
This commit is contained in:
Dan Mihai 2024-02-09 19:41:26 +00:00
parent e78a951e03
commit a21ca9b7c9
1 changed files with 27 additions and 2 deletions
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29
tests/integration/kubernetes/tests_common.sh
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@ -63,6 +63,19 @@ get_one_kata_node() {
echo "${resource_name/"node/"}"
}
# Deletes new_pod it wasn't present in the old_pods array.
delete_pod_if_new() {
declare -r new_pod="$1"
shift
declare -r old_pods=("$@")
for old_pod in "${old_pods[@]}"; do
[ "${old_pod}" == "${new_pod}" ] && return 0
done
kubectl delete "${new_pod}" >&2
}
# Runs a command in the host filesystem.
#
# Parameters:
@ -73,8 +86,12 @@ exec_host() {
# `kubectl debug` always returns 0, so we hack it to return the right exit code.
command="${@:2}"
command+='; echo -en \\n$?'
# Get the already existing debugger pods.
declare -a old_debugger_pods=( $(kubectl get pods -o name | grep node-debugger) )
# We're trailing the `\r` here due to: https://github.com/kata-containers/kata-containers/issues/8051
# tl;dr: When testing with CRI-O we're facing the foillowing error:
# tl;dr: When testing with CRI-O we're facing the following error:
# ```
# (from function `exec_host' in file tests_common.sh, line 51,
# in test file k8s-file-volume.bats, line 25)
@ -83,7 +100,15 @@ exec_host() {
# bash: line 1: $'\r': command not found
# ```
output="$(kubectl debug -qit "node/${node}" --image=alpine:latest -- chroot /host bash -c "${command}" | tr -d '\r')"
kubectl get pods -o name | grep node-debugger | xargs kubectl delete > /dev/null
# Get the updated list of debugger pods.
declare -a new_debugger_pods=( $(kubectl get pods -o name | grep node-debugger) )
# Delete the debugger pod created above.
for new_pod in "${new_debugger_pods[@]}"; do
delete_pod_if_new "${new_pod}" "${old_debugger_pods[@]}"
done
exit_code="$(echo "${output}" | tail -1)"
echo "$(echo "${output}" | head -n -1)"
return ${exit_code}