Introduction

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

This is the first release for this blueprint, the 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, MECM and MEC Hosts will be installed. The number of nodes in MECM cluster and MEC Host cluster is configurable. 

The MECM is a K8s Cluster and MEC host 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
• MECM Node
• MEC Hosts 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 R3 - 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) MECM

3) MEC Host

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 1.12) installed in Jump Host, required for CLI.

Database Prerequisites

Schema scripts

N/A

Other Installation Requirements

Jump Host Requirements

Network Requirements

• Internet connectivity in Jump Host, MECM  and MEC Hosts.
• The MECM Master Node and MEP Master 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 > 2.5.[ https://docs.ansible.com/ansible/latest/installation_guide/intro_installation.html]
2. Install git
3. Install GoLang > 1.12
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

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

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 MECM and MEC Hosts. 

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

4. Execute the below command 
**Setup develop environment - 

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

Once the execution is completed in console will see prompt "EALTEdge Environment Installed  in unsecured mode , Components Install MECM and MEC Hosts Successfully"

**Setup Production environment

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

Once the execution is completed in console will see prompt "EALTEdge Environment Installed in secured mode , Components Install MECM and MEC Hosts Successfully"

Other Options:

To Install only MECM Node

** Install in unsecured mode - Dev mode

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

** Install in secured mode

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

To Install only MEC Host
** Install in unsecured mode

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

** Install in secured mode

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

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

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 

In non secure mode

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

or 

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

In Secure Mode (TLS Enabled)

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

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

Other CLI Commands:

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

To Install MECM node in Secure Mode

root@akraino-mec-0002:~#ealt init manager -m prod

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

Following packages will be installed in the cluster in the respective nodes:-

MECM  pkgs:  Docker, Kubernetes , Helm, Grafana, Calico, PostgresSQL and AppLCM.

MEC Host pkgs: Docker, K3S, Helm, RabbitMQ, Prometheus, CAdvisor, Kong, Vault, Cert-Manager , PostgresSQL, MEP Server and MEP Agent.

Deploying Application Packages : Using CLI

Prerequisite : The EALTEdge Environment should be installed.  One MECM and one MEC Host atleast.

Pre-configuration : Need to set the below parameters as environment variables on VM where EALTEdge CLI is being installed.

export ONBOARDPACKAGEPATH= <Path where Application CSAR Package is kept in the Node where CLI is running>
export MECMClusterIP=<IP of MECM Node> #IP of Node where MECM is installed.
export MECMClusterPort=30001 #(Node Port of applcm service running on MECM)

To enable HTTPS Mode while using CLI, additional configurations have to be done. The configurations are as follows:

export CertificateKeyFile=<Path of CA Cert>
export EALTSSLMode=1 #If need to disable https mode modify the flag to 0

export MECMClusterIP='edgegallery.org' #Map the DNS Name to the MECM IP in /etc/hosts file.

Command Supported:-

Application Package Management CLI Commands:

1. Package On Boarding : root@akraino-mec-0002:~#ealt app create -f "sample_app.csar "
2. Package Info Query: root@akraino-mec-0002:~#ealt app info -i "<package id number>"
3. Package Delete: root@akraino-mec-0002:~#ealt app delete -i "<package id number>"

Application Life Cycle Management CLI Commands:

1. Application Instance Creation on MEC Host: root@akraino-mec-0002:~#ealt applcm create -i appdid "<id>" -n "<name>" -d "<description>"
2. To start the application instance on MEC Host: root@akraino-mec-0002:~#ealt applcm start -i appid "<id>" -n "<hostname>" -o "<hostip>"
3. To get the application instance details : root@akraino-mec-0002:~#ealt applcm info -i appid "<id>"
4. To terminate the application instance: root@akraino-mec-0002:~#ealt applcm kill -i appid "<id>"
5. To delete the application on MEC Host: root@akraino-mec-0002:~#ealt applcm delete -i appid "<id>"

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 MECM Node and check whether K8S cluster is installed. 
2. Check grafana and AppLCM services are running as PODS. 
3. Login to MEC Host and check K3S is installed. 

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

Using CLI

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

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

MECM

MEC Host

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.