fix: route CNB images through launcher on scheduler-k3s

Mirror the docker-local fix in #8525 for the k3s scheduler. CNB images default to a `/cnb/process/web` entrypoint that ignores incoming args, so non-web deployments, scheduled cron jobs, and ad-hoc `dokku run` / `cron:run` commands all need an explicit `launcher` entrypoint. The deployment and cron-job helm templates now set `command: [launcher]` when `image.type` is `pack`, and `TriggerSchedulerRun` sets the entrypoint to `launcher` for pack images while finishing the previously stubbed Procfile lookup branch so the resolved command is actually scheduled.
This commit is contained in:
Jose Diaz-Gonzalez
2026-04-30 21:29:11 -04:00
parent 3ddce21aef
commit 3a845f4d14
4 changed files with 245 additions and 5 deletions

View File

@@ -0,0 +1,226 @@
#!/usr/bin/env bats
load test_helper
TEST_APP="rdmtestapp"
setup_file() {
install_pack
}
setup() {
uninstall_k3s || true
global_setup
dokku nginx:stop
export KUBECONFIG="/etc/rancher/k3s/k3s.yaml"
}
teardown() {
global_teardown
dokku nginx:start
uninstall_k3s || true
}
@test "(scheduler-k3s) cnb deployment sets command launcher for non-web process" {
if [[ -z "$DOCKERHUB_USERNAME" ]] || [[ -z "$DOCKERHUB_TOKEN" ]]; then
skip "skipping due to missing docker.io credentials DOCKERHUB_USERNAME:DOCKERHUB_TOKEN"
fi
INGRESS_CLASS=nginx install_k3s
run /bin/bash -c "dokku apps:create $TEST_APP"
echo "output: $output"
echo "status: $status"
assert_success
run /bin/bash -c "dokku builder:set $TEST_APP selected pack"
echo "output: $output"
echo "status: $status"
assert_success
run /bin/bash -c "dokku ps:scale $TEST_APP web=1 worker=1"
echo "output: $output"
echo "status: $status"
assert_success
run deploy_app python dokku@$DOKKU_DOMAIN:$TEST_APP add_requirements_txt_cnb
echo "output: $output"
echo "status: $status"
assert_success
assert_output_contains 'from cnb stack'
run /bin/bash -c "kubectl get deployment $TEST_APP-worker -o=jsonpath='{.spec.template.spec.containers[0].command[0]}'"
echo "output: $output"
echo "status: $status"
assert_success
assert_output "launcher"
run /bin/bash -c "kubectl get deployment $TEST_APP-worker -o=jsonpath='{.spec.template.spec.containers[0].args[0]}'"
echo "output: $output"
echo "status: $status"
assert_success
assert_output "python3"
run /bin/bash -c "kubectl get deployment $TEST_APP-web -o=jsonpath='{.spec.template.spec.containers[0].command}'"
echo "output: $output"
echo "status: $status"
assert_success
assert_output ""
}
@test "(scheduler-k3s) cnb cronjob manifest sets command launcher" {
if [[ -z "$DOCKERHUB_USERNAME" ]] || [[ -z "$DOCKERHUB_TOKEN" ]]; then
skip "skipping due to missing docker.io credentials DOCKERHUB_USERNAME:DOCKERHUB_TOKEN"
fi
INGRESS_CLASS=nginx install_k3s
run /bin/bash -c "dokku apps:create $TEST_APP"
echo "output: $output"
echo "status: $status"
assert_success
run /bin/bash -c "dokku config:set $TEST_APP SECRET_KEY=fjdkslafjdk"
echo "output: $output"
echo "status: $status"
assert_success
run /bin/bash -c "dokku builder:set $TEST_APP selected pack"
echo "output: $output"
echo "status: $status"
assert_success
run deploy_app python dokku@$DOKKU_DOMAIN:$TEST_APP cron_run_wrapper
echo "output: $output"
echo "status: $status"
assert_success
assert_output_contains 'from cnb stack'
run /bin/bash -c "kubectl get cronjob -o=jsonpath='{.items[0].spec.jobTemplate.spec.template.spec.containers[0].command[0]}'"
echo "output: $output"
echo "status: $status"
assert_success
assert_output "launcher"
cron_id="$(dokku cron:list $TEST_APP --format json | jq -r '.[0].id')"
run /bin/bash -c "echo $cron_id"
echo "output: $output"
echo "status: $status"
assert_success
assert_output_exists
run /bin/bash -c "dokku --quiet cron:run $TEST_APP $cron_id"
echo "output: $output"
echo "status: $status"
assert_success
assert_output "['task.py', 'some', 'cron', 'task']"
}
@test "(scheduler-k3s) cnb dokku run uses launcher entrypoint" {
if [[ -z "$DOCKERHUB_USERNAME" ]] || [[ -z "$DOCKERHUB_TOKEN" ]]; then
skip "skipping due to missing docker.io credentials DOCKERHUB_USERNAME:DOCKERHUB_TOKEN"
fi
INGRESS_CLASS=nginx install_k3s
run /bin/bash -c "dokku apps:create $TEST_APP"
echo "output: $output"
echo "status: $status"
assert_success
run /bin/bash -c "dokku config:set $TEST_APP SECRET_KEY=fjdkslafjdk"
echo "output: $output"
echo "status: $status"
assert_success
run /bin/bash -c "dokku builder:set $TEST_APP selected pack"
echo "output: $output"
echo "status: $status"
assert_success
run deploy_app python dokku@$DOKKU_DOMAIN:$TEST_APP add_requirements_txt_cnb
echo "output: $output"
echo "status: $status"
assert_success
assert_output_contains 'from cnb stack'
run /bin/bash -c "dokku --quiet run $TEST_APP python3 task.py test"
echo "output: $output"
echo "status: $status"
assert_success
assert_output "['task.py', 'test']"
run /bin/bash -c "dokku --quiet run $TEST_APP env"
echo "output: $output"
echo "status: $status"
assert_success
assert_output_contains "SECRET_KEY=fjdkslafjdk"
}
@test "(scheduler-k3s) cnb dokku run resolves Procfile key" {
if [[ -z "$DOCKERHUB_USERNAME" ]] || [[ -z "$DOCKERHUB_TOKEN" ]]; then
skip "skipping due to missing docker.io credentials DOCKERHUB_USERNAME:DOCKERHUB_TOKEN"
fi
INGRESS_CLASS=nginx install_k3s
run /bin/bash -c "dokku apps:create $TEST_APP"
echo "output: $output"
echo "status: $status"
assert_success
run /bin/bash -c "dokku config:set $TEST_APP SECRET_KEY=fjdkslafjdk"
echo "output: $output"
echo "status: $status"
assert_success
run /bin/bash -c "dokku builder:set $TEST_APP selected pack"
echo "output: $output"
echo "status: $status"
assert_success
run deploy_app python dokku@$DOKKU_DOMAIN:$TEST_APP cron_run_procfile_wrapper
echo "output: $output"
echo "status: $status"
assert_success
assert_output_contains 'from cnb stack'
run /bin/bash -c "dokku --quiet run $TEST_APP task"
echo "output: $output"
echo "status: $status"
assert_success
assert_output "['task.py', 'test']"
cron_id="$(dokku cron:list $TEST_APP --format json | jq -r '.[0].id')"
run /bin/bash -c "echo $cron_id"
echo "output: $output"
echo "status: $status"
assert_success
assert_output_exists
run /bin/bash -c "dokku --quiet cron:run $TEST_APP $cron_id"
echo "output: $output"
echo "status: $status"
assert_success
assert_output "['task.py', 'test']"
}
cron_run_wrapper() {
local APP="$1"
local APP_REPO_DIR="$2"
[[ -z "$APP" ]] && local APP="$TEST_APP"
APP_REPO_DIR="$(realpath "$APP_REPO_DIR")"
add_requirements_txt "$APP" "$APP_REPO_DIR"
mv -f "$APP_REPO_DIR/app-cnb-cron.json" "$APP_REPO_DIR/app.json"
}
cron_run_procfile_wrapper() {
local APP="$1"
local APP_REPO_DIR="$2"
[[ -z "$APP" ]] && local APP="$TEST_APP"
APP_REPO_DIR="$(realpath "$APP_REPO_DIR")"
add_requirements_txt "$APP" "$APP_REPO_DIR"
mv -f "$APP_REPO_DIR/app-cnb-cron-procfile.json" "$APP_REPO_DIR/app.json"
}