Mojaloop Setup for Linux (Ubuntu)

Local setup on a Laptop or Desktop to run the Mojaloop project.

Setup Introduction

This document will provide guidelines to a technical capable resources to setup, deploy and configure the Mojaloop applications on a local environment, utilizing Docker, Kubernetes and HELM charts.

At this point the reader/implementer should be familiar with Mojaloop's deployment guide. Imported information is contained in that document and as such a prerequisite to this document.

1. Environment recommendations

This environment setup was validated on:

  • 64-bit version of Ubuntu Bionic 18.04(LTS).
  • This guide is based on Ubuntu 18.04.2 (bionic) on a x86_64 desktop with 8 CPU's and 16GB RAM.

2. Kubernetes

Kubernetes installation for a local environment.

2.1. MicroK8S

We recommend install directly from the snap store.

Don't have the snap command? Install snapd first.

  1. Installing MicroK8s from snap.

    snap install microk8s --classic
    
  2. Verify MicroK8s is installed and available.

    microk8s.status
    
  3. During installation you can use the --wait-ready flag to wait for the kubernetes services to initialise.

    microk8s.status --wait -ready
    
  4. To avoid colliding with a kubectl already installed and to avoid overwriting any existing Kubernetes configuration file, MicroK8s adds a microk8s.kubectl command, configured to exclusively access the new MicroK8s install.

    microk8s.kubectl get services
    
  5. This step is only necessary if you require microk8s.kubectl to function as a standard kubectl command. This DOES NOT mean that you can then use kubectl to access OTHER k8s clusters.

    An example of why you would use this: You have a bash script or 3rd party tool that expects kubectl to be available. E.g. If you want to use Helm, it will not work against microk8s.kubectl, thus one MUST setup the alias for Helm to function correctly.

    snap alias microk8s.kubectl kubectl
    

    Reverting it at any time;

    snap unalias kubectl
    

    We will stick with the standard command of prefixing with microk8s. for this guide.

  6. If you already have kubectl installed and would like to use it to access the MicroK8s deployment.

    microk8s.kubectl config view --raw > $HOME/.kube/config
    
  7. View the current context.

    microk8s.kubectl config get-contexts
    
  8. Make sure the current context is microk8s. If not, set it as the current context.

    microk8s.kubectl config use-context microk8s
    

1.2. Docker

Docker is deployed as part of the MicroK8s installation. The docker daemon used by MicroK8s is listening on unix:///var/snap/microk8s/current/docker.sock. You can access it with the microk8s.docker command.

  1. If you require microk8s.docker to function as a standard docker command, you set an alias.

    sudo snap alias microk8s.docker docker
    

    Undo the alias;

    sudo snap unalias docker
    
  2. We will apply the native microK8s commands by prefix commands microk8s.

    microk8s.docker ps
    
  3. Continue setup and configuration from the Kubernetes Dashboard section in the Mojaloop's deployment guide document.

2. Useful Tips

  1. Resolve problems with VSCode and kafka on ubuntu 18.04. To make the code work with VSCode debugger, added the following into the launch.json
     "env": {
             "LD_LIBRARY_PATH": "${workspaceFolder}/node_modules/node-rdkafka/build/deps",
             "WITH_SASL": 0
           }
    

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