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SPDX-License-Identifier: Apache-2.0
Copyright (c) 2019-2021 Intel Corporation

Harbor Registry Service in Smart Edge Open

Harbor registry is an open source cloud native registry which can support images and relevant artifacts with extended functionalities as described in Harbor. On the Smart Edge Open environment, Harbor registry service is installed on Control plane Node by Harbor Helm Chart github. Harbor registry authentication enabled with self-signed certificates as well as all nodes and control plane will have access to the Harbor registry.

Deploy Harbor registry

System Prerequisite

  • The available system disk should be reserved at least 20G for Harbor PV/PVC usage. The defaut disk PV/PVC total size is 20G. The values can be configured in the roles/harbor_registry/controlplane/defaults/main.yaml.
  • If huge pages enabled, need 1G(hugepage size 1G) or 300M(hugepage size 2M) to be reserved for Harbor usage.

Ansible Playbooks

Ansible harbor_registry roles created in Converged Edge Experience Kits. For deploying a Harbor registry on Kubernetes, control plane roles are enabled in the main network_edge.yml playbook file.

role: harbor_registry/controlplane
role: harbor_registry/node

The following steps are processed by converged-edge-experience-kits during the Harbor registry installation on the Smart Edge Open control plane node.

  • Download Harbor Helm Charts on the Kubernetes Control plane Node.
  • Check whether huge pages is enabled and templates values.yaml file accordingly.
  • Create namespace and disk PV for Harbor Services (The default disk PV/PVC total size is 20G. The values can be configured in the roles/kubernetes/harbor_registry/controlplane/defaults/main.yaml).
  • Install Harbor on the control plane node using the Helm Charts (The CA crt will be generated by Harbor itself).
  • Create the new project - intel for Smart Edge Open microservices, Kurbernetes enhanced add-on images storage.
  • Docker login the Harbor Registry, thus enable pulling, pushing and tag images with the Harbor Registry

On the Smart Edge Open edge nodes, converged-edge-experience-kits will conduct the following steps:

  • Get harbor.crt from the Smart Edge Open control plane node and save into the host location /etc/docker/certs.d/<Kubernetes_Control_Plane_IP:port>
  • Docker login the Harbor Registry, thus enable pulling, pushing and tag images with the Harbor Registry
  • After above steps, the Node and Ansible host can access the private Harbor registry.
  • The IP address of the Harbor registry will be: "Kubernetes_Control_Plane_IP"
  • The port number of the Harbor registry will be: 30003

Projects

Two Harbor projects will be created by CEEK as below:

  • library The registry project can be used by edge application developer as default images registries.
  • intel The registry project contains the registries for the Smart Edge Open microservices and relevant kubernetes addon images. Can also be used for Smart Edge Open sample application images.

Harbor login

For the nodes inside of the Smart Edge Open cluster, converged-edge-experience-kits ansible playbooks automatically login and prepare harbor CA certifications to access Harbor services.

For the external host outside of the Smart Edge Open cluster, can use following commands to access the Harbor Registry:

# create directory for harbor's CA crt
mkdir /etc/docker/certs.d/${Kubernetes_Control_Plane_IP}:${port}/

# get EMCO harbor CA.crt
set -o pipefail && echo -n | openssl s_client -showcerts -connect ${Kubernetes_Control_Plane_IP}:${port} 2>/dev/null | sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p' > /etc/docker/certs.d/${Kubernetes_Control_Plane_IP}:${port}/harbor.crt

# docker login harobr registry
docker login ${Kubernetes_Control_Plane_IP}:${port} -uadmin -p${harborAdminPassword}

The default access configuration for the Harbor Registry is:

Kubernetes_Control_Plane_IP: 30003(default)
harborAdminPassword: Harbor12345(default)

Harbor registry image push

Use the Docker tag to create an alias of the image with the fully qualified path to your Harbor registry after the tag successfully pushes the image to the Harbor registry.

 docker tag nginx:latest {Kubernetes_Control_Plane_IP}:30003/intel/nginx:latest
 docker push {Kubernetes_Control_Plane_IP}:30003/intel/nginx:latest

Now image the tag with the fully qualified path to your private registry. You can push the image to the registry using the Docker push command.

Harbor registry image pull

Use the docker pull command to pull the image from Harbor registry:

 docker pull {Kubernetes_Control_Plane_IP}:30003/intel/nginx:latest

Harbor UI

Open the https://{Kubernetes_Control_Plane_IP}:30003 with login username admin and password Harbor12345:

You could see two projects: intel and library on the Web UI. For more details about Harbor usage, can refer to Harbor docs.

Harbor CLI

Apart for Harbor UI, you can also use curl to check Harbor projects and images. The examples will be shown as below.

In the examples, 10.240.224.172 is IP address of {Kubernetes_Control_Plane_IP}
If there is proxy connection issue with ```curl``` command, can add ```--proxy``` into the command options.

CLI - List Project

Use following example commands to check projects list:

# curl -X GET "https://10.240.224.172:30003/api/v2.0/projects" -H "accept: application/json" -k --cacert /etc/docker/certs.d/10.240.224.172:30003/harbor.crt -u "admin:Harbor12345 | jq"
[
 {
   "creation_time": "2020-11-26T08:47:31.626Z",
   "current_user_role_id": 1,
   "current_user_role_ids": [
     1
   ],
   "cve_allowlist": {
     "creation_time": "2020-11-26T08:47:31.628Z",
     "id": 1,
     "items": [],
     "project_id": 2,
     "update_time": "2020-11-26T08:47:31.628Z"
   },
   "metadata": {
     "public": "true"
   },
   "name": "intel",
   "owner_id": 1,
   "owner_name": "admin",
   "project_id": 2,
   "repo_count": 3,
   "update_time": "2020-11-26T08:47:31.626Z"
 },
 {
   "creation_time": "2020-11-26T08:39:13.707Z",
   "current_user_role_id": 1,
   "current_user_role_ids": [
     1
   ],
   "cve_allowlist": {
     "creation_time": "0001-01-01T00:00:00.000Z",
     "items": [],
     "project_id": 1,
     "update_time": "0001-01-01T00:00:00.000Z"
   },
   "metadata": {
     "public": "true"
   },
   "name": "library",
   "owner_id": 1,
   "owner_name": "admin",
   "project_id": 1,
   "update_time": "2020-11-26T08:39:13.707Z"
 }
]

CLI - List Image Repositories

Use following example commands to check images repository list of project - intel:

# curl -X GET "https://10.240.224.172:30003/api/v2.0/projects/intel/repositories" -H "accept: application/json" -k --cacert /etc/docker/certs.d/10.240.224.172:30003/harbor.crt -u "admin:Harbor12345" | jq
[
 {
   "artifact_count": 1,
   "creation_time": "2020-11-26T08:57:43.690Z",
   "id": 3,
   "name": "intel/sriov-device-plugin",
   "project_id": 2,
   "pull_count": 1,
   "update_time": "2020-11-26T08:57:55.240Z"
 },
 {
   "artifact_count": 1,
   "creation_time": "2020-11-26T08:56:16.565Z",
   "id": 2,
   "name": "intel/sriov-cni",
   "project_id": 2,
   "update_time": "2020-11-26T08:56:16.565Z"
 },
 {
   "artifact_count": 1,
   "creation_time": "2020-11-26T08:49:25.453Z",
   "id": 1,
   "name": "intel/multus",
   "project_id": 2,
   "update_time": "2020-11-26T08:49:25.453Z"
 }
]

CLI - Delete Image

Use following example commands to delete the image repository of project - intel, for example:

 # curl -X DELETE "https://10.240.224.172:30003/api/v2.0/projects/intel/repositories/nginx" -H "accept: application/json" -k --cacert /etc/docker/certs.d/10.240.224.172:30003/harbor.crt -u "admin:Harbor12345"

Use following example commands to delete a specific image version:

# curl -X DELETE "https://10.240.224.172:30003/api/v2.0/projects/intel/repositories/nginx/artifacts/1.14.2" -H "accept: application/json" -k --cacert /etc/docker/certs.d/10.240.224.172:30003/harbor.crt -u "admin:Harbor12345"