Introduction

The guide covers the installation details which are related to Enterprise Applications on Lightweight 5G Telco Edge (EALTEdge) Blueprint.  

This guide covers detailed information of the various types of deployments, detailed steps and what are the various components it will install. In addition, the guide provides information on hardware requirements, prerequisite software and minimum hardware requirements. On successful deployment, Center and Edge Nodes will be installed. The number of nodes in Center cluster and Edge node in the cluster is configurable. 

The CENTER Node is a K8s Cluster and EDGE Node is a K3s Cluster. 

How to use this document

The document includes details of prerequisites /pre-installation, installation and uninstalls steps. 

The prerequisites and pre-installation software and hardware should be ready before executing the installation steps.

In BP first release Two types of installation mechanisms are provided, as below 

1. Ansible-Playbook single command
2. Command Line Interface (CLI)

Deployment Architecture

The Deployment Architecture consists of the following nodes

• One-Click Deployment Node
• Center Node
• Edge Node

Note: For Development environment two nodes  is sufficient, where one node plays a dual role of One-Click Deployment Node and MECM Node with other as MEC Host.

                                                 Figure: EALTEdge Deployment Architecture

Note: EALTEdge Blueprint Deployment has been tested on Cloud VM and is not tested on Bare-Metal Environment. Though, theoretically deployment should work  in bare metal,  provided hardware and software prerequisites are met. Kindly refer R4 - Test Documentation of Enterprise Applications on Lightweight 5G Telco Edge (EALTEdge) to get details on the tested deployment.

Pre-Installation Requirements

Hardware Requirements

The number of Hardware requirements depends mainly on the Use Case Scenario and the enterprise scale. A use case can have one MECM Cluster  with one or multiple MEC Host clusters.

The minimum number of nodes required for a complete EALTEdge Topology is three. (Bare-Metal or Virtual Machines) 

1) Deployment Node

2) Center Node

3) Edge Node

Note: The Hardware details provided are of Virtual Machine configurations.

Minimum Hardware Requirements

Note: The above specifications are given considering the EALTEdge CI / CD environment. User can try lower configuration considering lightweight components being used.

Recommended Hardware Requirements

Software Prerequisites

• Virtual Machines preinstalled with Ubuntu 16.04 /18.04 for MECM Node.
• Virtual Machines preinstalled with Ubuntu 16.04 / 18.04 or CentOS 7.X for MEC Host Nodes
• root user created in the Deployment Node, MEC Node and MEC Host Node.
• SSH Server running in all the Nodes.
• Ansible > 2.5 installed in One Click Deployment Node (Jump Host)
• git installed in Jump Host.
• Kubespray code is downloaded (https://github.com/kubernetes-sigs/kubespray.git)
• GO Lang (version greater than 1.14.2) installed in Jump Host, required for CLI.

Database Prerequisites

Schema scripts

N/A

Other Installation Requirements

Jump Host Requirements

Network Requirements

• Internet connectivity in OCD Host, CENTER  and EDGE Nodes.
• The CENTER Node and EDGE Node should be able to ping each other.

Bare Metal Node Requirements

N/A

Execution Requirements (Bare Metal Only)

N/A

Installation High-Level Overview

The blueprint provides one click deployment and command-line interface for installing the EALTEdge blueprint components.

Bare Metal Deployment Guide

Install Bare Metal Jump Host

Note: EALTEdge Blueprint Deployment has been tested on Huawei Cloud Virtual Machines and is not tested on Bare-Metal Environment. 

Though theoretically deployment should run successfully in bare metal too provided hardware and software prerequisites are met.

Creating a Node Inventory File

N/A

Creating the Settings Files

N/A

Running

N/A

Virtual Deployment Guide

For Virtual Deployment minimum three Virtual machines, following are the virtual machines and their usage

All the nodes should have internet connectivity , network interface and network connectivity between the  VM's. 

In this release providing two ways to install the EALTEdge environment. 

i)  EALTEdge Deployment using Ansible-Playbook single command.

ii) EALTEdge Deployment using CLI

Standard Deployment Overview

Jump Host Software Installations:

Login to the Jump Host and perform the below steps:

1. Install Ansible > 2.9.6 [ https://docs.ansible.com/ansible/latest/installation_guide/intro_installation.html]
2. Install git
3. Install GoLang > 1.14+
4. Git clone the Kubespray repo. [https://github.com/kubernetes-sigs/kubespray.git]
5. Install python3 and pip3
6. cd kubespray && pip install -r requirements.txt

Jump Host Pre-Configurations for MECM Components Installation  NEED TO BE MODIFIED

Login to the Jump Host and perform the below configuration steps (Steps : as below-

1. Generate public key : #ssh-keygen

2. Copy the ssh key to all the nodes in the MECM Cluster, using ssh-copy-id. (example : #ssh-copy-id root@159.178.17.16)

3. Kubespray configuration

      cd kubespray && cp -rfp inventory/sample inventory/mycluster

      Update ansible inventory file provided in kubesrpay repo with MECM Cluster node IP's 

      Example: 

       declare -a IPS=(158.176.15.55 158.176.15.56 158.176.15.57)

       CONFIG_FILE=inventory/mycluster/hosts.yaml python3 contrib/inventory_builder/inventory.py ${IPS[@]}

4. Review and Change Parameters under inventory/mycluster/group_vars

        cat inventory/mycluster/group_vars/all/all.yml
        cat inventory/mycluster/group_vars/k8s-cluster/k8s-cluster.yml

5. Alter the config.yml and change parameters under path NEED TO BE PROVIDED

Installing Mode : EALTEdge using Ansible-Playbooks

1. git clone the ealt-edge repo, to download the software to install the EALTEdge Environment.

root@akraino-mec-0002:~# git clone "https://gerrit.akraino.org/r/ealt-edge"

2. go to the below directory 

root@akraino-mec-0002:~# cd ealt/infra/playbooks

3. Modify the Configuration File : ealt-inventory.ini with the details of CENTER and EDGE Nodes. 

root@akraino-mec-0002:~# vi ealt-inventory.ini

4. Execute the below command 
**Setup environment - 

root@akraino-mec-0002:~# ansible-playbook ealt-all.yml -i ealt-inventory.ini --extra-vars "operation=install"

Once the execution is completed in console will see prompt "EALTEdge Environment Installed  , Components Install CENTER and EDGE Nodes Successfully"

Other Options:

To Install only Edge node
root@akraino-mec-0002:~# ansible-playbook ealt-all.yml -i ealt-inventory.ini --tags "edge" --extra-vars "operation=install"

Installing Mode : EALTEdge using CLI

1. git clone the ealt-edge repo, to download the software to install the EALTEdge Environment.

root@akraino-mec-0002:~# git clone "https://gerrit.akraino.org/r/ealt-edge"

2. go to CLI directory 

root@akraino-mec-0002:~#cd ealt/infra/cli/

root@akraino-mec-0002:~#chmod +x build _cli.sh

root@akraino-mec-0002:~#source build_cli.sh

root@akraino-mec-0002:~#cd ~/ealt-edge/ocd/infra/playbooks

Note: The CLI Commands to setup the environment should be executed only from above path.

3.  Edit the Configuration File : ealt-inventory.ini with the details of MECM and MEC Hosts. 

root@akraino-mec-0002:~#vi ealt-inventory.ini

4. Execute the below command to install EALTEdge Environment 

root@akraino-mec-0002:~#ealt init all 

Above command will install the various component. Refer the below table for detail information. 

Other CLI Commands:

Command to Install only Edge Node

root@akraino-mec-0002:~#ealt init edge

Snapshot Deployment Overview

Not Applicable

Special Requirements for Virtual Deployments

N/A

Install Jump Host

N/A

Verifying the Setup - VM's

N/A

Upstream Deployment Guide

Upstream Deployment Key Features

N/A

Special Requirements for Upstream Deployments

N/A

Scenarios and Deploy Settings for Upstream Deployments

N/A

Including Upstream Patches with Deployment

N/A

Running

N/A

Interacting with Containerized Overcloud

N/A

Verifying the Setup

Verifying EALTEdge Deployment

Currently the verification is manually done. 

1. Login to the Center Node and check whether K8S cluster is installed. 
2. Check the below mentioned components and services are running as Pods / Services in Kubernetes cluster
   1. PostgresSQL
   2. AppLCM
   3. Appo
   4. Inventory
   5. Apm
   6. MECM - FrontEnd
   7. Appstore
   8. Developer Portal
   9. Service Center
   10. User Management
3. Login to Edge Host and check K3S is installed. 

Components and Services running in CENTER Node 

Components and Services running EDGE Node

Developer  Guide and Troubleshooting

Uninstall Guide

Using Ansible Playbooks

root@akraino-mec-0002:~#ansible-playbook ealt-all-uninstall.yml -i ealt-inventory.ini --extra-vars "operation=uninstall"
root@akraino-mec-0002:~#ansible-playbook ealt-all-uninstall.yml -i ealt-inventory.ini --tags "edge" --extra-vars "operation=uninstall"

Using CLI

root@akraino-mec-0002:~#ealt clean all 
root@akraino-mec-0002:~#ealt clean edge

Troubleshooting

Error Message Guide

N/A

Maintenance

Blueprint Package Maintenance

Software maintenance

N/A

Hardware maintenance

N/A

Blueprint Deployment Maintenance

N/A

Frequently Asked Questions

N/A

License

Any software developed by the "Akraino Enterprise Applications on Lightweight 5G Telco Edge Project is licensed under the
Apache License, Version 2.0 (the "License");
you may not use the content of this software bundle except in compliance with the License.
You may obtain a copy of the License at <https://www.apache.org/licenses/LICENSE-2.0>

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

License information of EALTEdge Blueprint  Components

OCD Host

CENTER Node

Center Node consists of  3 components .  MECM , Appstore and Developer Portal.  

Refer:

MECM  Edge Gallery http://docs.edgegallery.org/zh_CN/latest/Projects/MECM/MECM.html#

Edge Node

References

Definitions, acronyms and abbreviations

Abbreviations

• EALTEdge - Enterprise Application on Lightweight 5G Telco Edge (EALTEdge).
• MECM - Multi Access Edge Computing Manager.
• MEC - Multi Access Edge Computing.
• MEP - Multi Access Edge Platform.