Decrease tests resource footprint on CI minion

Due to constrained CI minion resources docker volumes
need to be pruned after each test invocation to prevent
false negative which occurs in case when multiple playbook
level tests are run.

Heavy VNC Server image (1GB) needs to be mocked with
lightweight alpine image in play-infrastructure test
for same reasons.

Change-Id: I1026593a375853575cf210aefe29bc320d4e5c64
Signed-off-by: Bartek Grzybowski <b.grzybowski@partner.samsung.com>
Issue-ID: OOM-1907

diff --git a/ansible/test/bin/ci-molecule.sh b/ansible/test/bin/ci-molecule.sh
index 7859c8d..7429681 100755 (executable)
--- a/ansible/test/bin/ci-molecule.sh
+++ b/ansible/test/bin/ci-molecule.sh
@@ -2,7 +2,7 @@
 
 #   COPYRIGHT NOTICE STARTS HERE
 
-#   Copyright 2019 © Samsung Electronics Co., Ltd.
+#   Copyright 2019-2020 © Samsung Electronics Co., Ltd.
 #
 #   Licensed under the Apache License, Version 2.0 (the "License");
 #   you may not use this file except in compliance with the License.
@@ -19,8 +19,8 @@
 #   COPYRIGHT NOTICE ENDS HERE
 
 #
-# This is a main wrapper script to run Molecule tests
-# Main usage is for the CI usage to keep interface stable and the way to call
+# This is a main wrapper script to run Molecule tests.
+# Main usage is for the CI to keep interface stable and the way to call
 # Molecule can be adjusted in this script independently.
 #
 
@@ -40,7 +40,6 @@ if [ "${MOLECULE_CONTAINER}" == "true" ]; then
     echo "Build Molecule-dev docker container"
     ${LOCAL_PATH}/../molecule-docker/build.sh
     MOLECULE_BINARY=${LOCAL_PATH}/../bin/molecule.sh
-
 else # Install Molecule natively in the target platform
     echo "Install Molecule with virtualenv"
     source ${LOCAL_PATH}/../bin/install-molecule.sh
@@ -50,5 +49,5 @@ fi
 cd ${ROLE_PATH}
 ${MOLECULE_BINARY} --version
 ${MOLECULE_BINARY} test --all
+docker volume prune --force
 cd -
-

diff --git a/ansible/test/play-infrastructure/molecule/default/vars.yml b/ansible/test/play-infrastructure/molecule/default/vars.yml
index 8aa774b..2ae49d9 100644 (file)
--- a/ansible/test/play-infrastructure/molecule/default/vars.yml
+++ b/ansible/test/play-infrastructure/molecule/default/vars.yml
@@ -1,5 +1,4 @@
 ---
-vnc_passwd: molecule
 certificates:
   organization_name: Molecule Testers
   state_or_province_name: Finland
@@ -22,3 +21,4 @@ runtime_images:
     registry: "{{ molecule_test_registry }}"
     path: "/library/alpine"
     tag: "latest"
+vnc_server_image: alpine:latest