containerd docker hub registry mirror support (#6962)

* containerd docker hub registry mirror support

* add docs

* fix typo

* fix yamllint

* fix indent in sample
and ansible-playbook param in testcases_run

* fix md

* mv common vars to tests/common/_docker_hub_registry_mirror.yml

* checkout vars to upgrade tests

.gitlab-ci.yml

@@ -15,6 +15,7 @@ variables:
   MAGIC: "ci check this"
   TEST_ID: "$CI_PIPELINE_ID-$CI_BUILD_ID"
   CI_TEST_VARS: "./tests/files/${CI_JOB_NAME}.yml"
+  CI_TEST_REGISTRY_MIRROR: "./tests/common/_docker_hub_registry_mirror.yml"
   GS_ACCESS_KEY_ID: $GS_KEY
   GS_SECRET_ACCESS_KEY: $GS_SECRET
   CONTAINER_ENGINE: docker

docs/containerd.md

@@ -0,0 +1,31 @@
+# conrainerd
+
+[containerd] An industry-standard container runtime with an emphasis on simplicity, robustness and portability
+Kubespray supports basic functionality for using containerd as the default container runtime in a cluster.
+
+_To use the containerd container runtime set the following variables:_
+
+## k8s-cluster.yml
+
+```yaml
+container_manager: containerd
+```
+
+## Containerd config
+
+Example: define registry mirror for docker hub
+
+```yaml
+containerd_config:
+  grpc:
+    max_recv_message_size: 16777216
+    max_send_message_size: 16777216
+  debug:
+    level: ""
+  registries:
+    "docker.io":
+      - "https://mirror.gcr.io"
+      - "https://registry-1.docker.io"
+```
+
+[containerd]: https://containerd.io/

inventory/sample/group_vars/all/containerd.yml

@@ -1,14 +1,18 @@
 ---
 # Please see roles/container-engine/containerd/defaults/main.yml for more configuration options
 
+# Example: define registry mirror for docker hub
+
 # containerd_config:
 #   grpc:
 #     max_recv_message_size: 16777216
 #     max_send_message_size: 16777216
 #   debug:
 #     level: ""
 #   registries:
-#     "docker.io": "https://registry-1.docker.io"
+#     "docker.io":
+#       - "https://mirror.gcr.io"
+#       - "https://registry-1.docker.io"
 #   max_container_log_line_size: -1
 #   metrics:
 #     address: ""

roles/container-engine/containerd/templates/config.toml.j2

@@ -62,7 +62,7 @@ disabled_plugins = ["restart"]
 [plugins.cri.registry.mirrors]
 {% for registry, addr in containerd_config.registries.items() %}
 [plugins.cri.registry.mirrors."{{ registry }}"]
-  endpoint = ["{{ addr }}"]
+  endpoint = ["{{ ([ addr ] | flatten ) | join('","') }}"]
 {% endfor %}
 {% endif %}
 

tests/common/_docker_hub_registry_mirror.yml

@@ -0,0 +1,15 @@
+---
+docker_registry_mirrors:
+  - "https://mirror.gcr.io"
+
+containerd_config:
+  grpc:
+    max_recv_message_size: 16777216
+    max_send_message_size: 16777216
+  debug:
+    level: ""
+  registries:
+    "docker.io":
+      - "https://mirror.gcr.io"
+      - "https://registry-1.docker.io"
+  max_container_log_line_size: -1

tests/scripts/testcases_run.sh

@@ -42,6 +42,7 @@ fi
 test "${UPGRADE_TEST}" != "false" && git fetch --all && git checkout "$KUBESPRAY_VERSION"
 # Checkout the CI vars file so it is available
 test "${UPGRADE_TEST}" != "false" && git checkout "${CI_BUILD_REF}" tests/files/${CI_JOB_NAME}.yml
+test "${UPGRADE_TEST}" != "false" && git checkout "${CI_BUILD_REF}" ${CI_TEST_REGISTRY_MIRROR}
 
 # Install mitogen ansible plugin
 if [ "${MITOGEN_ENABLE}" = "true" ]; then
@@ -51,20 +52,20 @@ if [ "${MITOGEN_ENABLE}" = "true" ]; then
 fi
 
 # Create cluster
-ansible-playbook ${ANSIBLE_LOG_LEVEL} -e @${CI_TEST_VARS} -e local_release_dir=${PWD}/downloads -e '{"docker_registry_mirrors":["https://mirror.gcr.io"]}' --limit "all:!fake_hosts" cluster.yml
+ansible-playbook ${ANSIBLE_LOG_LEVEL} -e @${CI_TEST_REGISTRY_MIRROR} -e @${CI_TEST_VARS} -e local_release_dir=${PWD}/downloads --limit "all:!fake_hosts" cluster.yml
 
 # Repeat deployment if testing upgrade
 if [ "${UPGRADE_TEST}" != "false" ]; then
   test "${UPGRADE_TEST}" == "basic" && PLAYBOOK="cluster.yml"
   test "${UPGRADE_TEST}" == "graceful" && PLAYBOOK="upgrade-cluster.yml"
   git checkout "${CI_BUILD_REF}"
-  ansible-playbook ${ANSIBLE_LOG_LEVEL} -e @${CI_TEST_VARS} -e local_release_dir=${PWD}/downloads -e '{"docker_registry_mirrors":["https://mirror.gcr.io"]}' --limit "all:!fake_hosts" $PLAYBOOK
+  ansible-playbook ${ANSIBLE_LOG_LEVEL} -e @${CI_TEST_REGISTRY_MIRROR} -e @${CI_TEST_VARS} -e local_release_dir=${PWD}/downloads --limit "all:!fake_hosts" $PLAYBOOK
 fi
 
 # Test control plane recovery
 if [ "${RECOVER_CONTROL_PLANE_TEST}" != "false" ]; then
-  ansible-playbook ${ANSIBLE_LOG_LEVEL} -e @${CI_TEST_VARS} -e local_release_dir=${PWD}/downloads -e '{"docker_registry_mirrors":["https://mirror.gcr.io"]}' --limit "${RECOVER_CONTROL_PLANE_TEST_GROUPS}:!fake_hosts" -e reset_confirmation=yes reset.yml
-  ansible-playbook ${ANSIBLE_LOG_LEVEL} -e @${CI_TEST_VARS} -e local_release_dir=${PWD}/downloads -e '{"docker_registry_mirrors":["https://mirror.gcr.io"]}' -e etcd_retries=10 --limit etcd,kube-master:!fake_hosts recover-control-plane.yml
+  ansible-playbook ${ANSIBLE_LOG_LEVEL} -e @${CI_TEST_REGISTRY_MIRROR} -e @${CI_TEST_VARS} -e local_release_dir=${PWD}/downloads --limit "${RECOVER_CONTROL_PLANE_TEST_GROUPS}:!fake_hosts" -e reset_confirmation=yes reset.yml
+  ansible-playbook ${ANSIBLE_LOG_LEVEL} -e @${CI_TEST_REGISTRY_MIRROR} -e @${CI_TEST_VARS} -e local_release_dir=${PWD}/downloads -e etcd_retries=10 --limit etcd,kube-master:!fake_hosts recover-control-plane.yml
 fi
 
 # Tests Cases
@@ -88,7 +89,7 @@ ansible-playbook -i ${ANSIBLE_INVENTORY} -e @${CI_TEST_VARS} --limit "all:!fake_
 
 ## Idempotency checks 1/5 (repeat deployment)
 if [ "${IDEMPOT_CHECK}" = "true" ]; then
-  ansible-playbook ${ANSIBLE_LOG_LEVEL} -e @${CI_TEST_VARS} -e local_release_dir=${PWD}/downloads -e '{"docker_registry_mirrors":["https://mirror.gcr.io"]}' --limit "all:!fake_hosts" cluster.yml
+  ansible-playbook ${ANSIBLE_LOG_LEVEL} -e @${CI_TEST_REGISTRY_MIRROR} -e @${CI_TEST_VARS} -e local_release_dir=${PWD}/downloads --limit "all:!fake_hosts" cluster.yml
 fi
 
 ## Idempotency checks 2/5 (Advanced DNS checks)
@@ -98,12 +99,12 @@ fi
 
 ## Idempotency checks 3/5 (reset deployment)
 if [ "${IDEMPOT_CHECK}" = "true" -a "${RESET_CHECK}" = "true" ]; then
-  ansible-playbook ${ANSIBLE_LOG_LEVEL} -e @${CI_TEST_VARS} -e reset_confirmation=yes -e '{"docker_registry_mirrors":["https://mirror.gcr.io"]}' --limit "all:!fake_hosts" reset.yml
+  ansible-playbook ${ANSIBLE_LOG_LEVEL} -e @${CI_TEST_REGISTRY_MIRROR} -e @${CI_TEST_VARS} -e reset_confirmation=yes --limit "all:!fake_hosts" reset.yml
 fi
 
 ## Idempotency checks 4/5 (redeploy after reset)
 if [ "${IDEMPOT_CHECK}" = "true" -a "${RESET_CHECK}" = "true" ]; then
-  ansible-playbook ${ANSIBLE_LOG_LEVEL} -e @${CI_TEST_VARS} -e local_release_dir=${PWD}/downloads -e '{"docker_registry_mirrors":["https://mirror.gcr.io"]}' --limit "all:!fake_hosts" cluster.yml
+  ansible-playbook ${ANSIBLE_LOG_LEVEL} -e @${CI_TEST_REGISTRY_MIRROR} -e @${CI_TEST_VARS} -e local_release_dir=${PWD}/downloads --limit "all:!fake_hosts" cluster.yml
 fi
 
 ## Idempotency checks 5/5 (Advanced DNS checks)