k3s-ansible/.github/scripts/test-unique-hostname-preche...

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#!/usr/bin/env bash
set -Eeuo pipefail
repo_root="$(git rev-parse --show-toplevel)"
site_play="$repo_root/site.yml"
# #636: verify the "Pre tasks" play asserts that all k3s_cluster hosts have
# unique hostnames, so a duplicate-hostname inventory fails fast instead of
# silently breaking node registration/joining.
grep -Fq -- 'Verify all cluster nodes have unique hostnames' "$site_play" || {
printf 'site.yml is missing the unique-hostname preflight check\n' >&2
exit 1
}
# The check must deduplicate the cluster hostname list via the `unique` filter
# and compare lengths, i.e. groups['k3s_cluster'] must be referenced.
grep -Fq -- "groups['k3s_cluster']" "$site_play" || {
printf 'unique-hostname check does not iterate the k3s_cluster group\n' >&2
exit 1
}
if ! grep -Eq -- 'cluster_hostnames.*\|.*unique|\| unique' "$site_play"; then
printf 'unique-hostname check does not deduplicate the hostname list\n' >&2
exit 1
fi
printf 'Unique hostname preflight regression test passed\n'