Liam Hurst

Liam Hurst

1559965014

A Complete Guide on Deploying a Node app to AWS with Docker

In this guide, I’ll walk you through the steps on how to dockerize a Node.js application and then deploy it to Amazon Web Services (AWS) using Amazon Elastic Container Registry (ECR) and Amazon Elastic Container Service (ECS).

Once you’ve got a web application running locally on your machine, if you want to access it on the internet, you’ve got to deploy it. And instead of just deploying it manually on a virtual machine in the cloud, let’s dockerize the app and then deploy it to the cloud.

Table of Contents

1. Introduction

2. Prerequisites

3. A quick primer on Docker and AWS

4. What we’ll be deploying

5. Creating a Dockerfile

6. Building a docker image

7. Running a docker container

8. Creating the Registry (ECR) and uploading the app image to it

9. Creating a new task definition

10. Creating a cluster

11. Creating a service to run it

12. Conclusion

1. Introduction

Writing code that does stuff is something most developers are familiar with. Sometimes, we need to take the responsibility of a SysAdmin or DevOps engineer and deploy our codebase to production where it will help a business solve problems for customers.

In this tutorial, I’ll show you how to dockerize a Node.js application and deploy it to Amazon Web Service (AWS) using Amazon ECR (Elastic Container Registry) and ECS (Elastic container service).

2. Prerequisites

To follow through this tutorial, you’ll need the following:

  1. Node and Npm: Follow this link to install the latest versions.
  2. Basic knowledge of Node.js.
  3. Docker: The installation provides Docker Engine, Docker CLI client, and other cool stuff. Follow the instructions for your operating system. To check if the installation worked, fire this on the terminal:
docker --version

The command above should display the version number. If it doesn’t, the installation didn’t complete properly.

4. AWS account: Sign up for a free tier. There is a waiting period to verify your phone number and bank card. After this, you will have access to the console.

5. AWS CLI: Follow the instructions for your OS. You need Python installed.

3. A quick primer on Docker and AWS

Docker is an open source software that allows you to pack an application together with the required dependencies and environment in a ‘Container’ that you can ship and run anywhere. It is independent of platforms or hardware, and therefore the containerized application can run in any environment in an isolated fashion.

Docker containers solve many issues, such as when an app works on a co-worker’s computer but doesn’t run on yours, or it works in the local development environment but doesn’t work when you deploy it to a server.

A Complete Guide on Deploying a Node app to AWS with Docker

Amazon Web Services (AWS) offers a reliable, scalable, and inexpensive cloud computing service for businesses. As I mentioned before, this tutorial will focus on using the ECR and ECS services.

4. What we’ll be deploying

Let’s quickly build a sample app that we’ll use for the purpose of this tutorial. It going to be very simple Node.js app.

Enter the following in your terminal:

// create a new directory
mkdir sample-nodejs-app
// change to new directory
cd sample-nodejs-app
// Initialize npm
npm init -y
// install express
npm install express
// create an server.js file
touch server.js

Open server.js and paste the code below into it:

// server.js
const express = require('express')const app = express()
app.get('/', (req, res) => {    res.send('Hello world from a Node.js app!')})
app.listen(3000, () => {    console.log('Server is up on 3000')})

Start the app with:

node server.js

Access it on http://localhost:3000. You should get Hello world from a Node.js app! displayed in your browser. The complete code is available on GitHub.

Now let’s take our very important app to production 😄.

5. Creating a Dockerfile

We are going to start dockerizing the app by creating a single file called a Dockerfile in the base of our project directory.

The Dockerfile is the blueprint from which our images are built. And then images turn into containers, in which we run our apps.

Every Dockerfile starts with a base image as its foundation. There are two ways to approach creating your Dockerfile:

  1. Use a plain OS base image (For example, Ubuntu OS, Debian, CentOS etc.) and install an application environment in it such as Node.js OR
  2. Use an environment-ready base image to get an OS image with an application environment already installed.

We will proceed with the second approach. We can use the official Node.js image hosted on Dockerhub which is based on Alpine Linux.

Write this in the Dockerfile:

FROM node:8-alpine
RUN mkdir -p /usr/src/app
WORKDIR /usr/src/app
COPY . .
RUN npm install
EXPOSE 3000
CMD [ "node", "server.js" ]

Let’s walk through this line by line to see what is happening here, and why.

FROM node:8-alpine

Here, we are building our Docker image using the official Node.js image from Dockerhub (a repository for base images).

  • Start our Dockerfile with a [**FROM**](https://docs.docker.com/reference/builder/#from) statement. This is where you specify your base image.
  • The [**RUN**](https://docs.docker.com/reference/builder/#run) statement will allow us to execute a command for anything you want to do. We created a subdirectory /usr/src/app that will hold our application code within the docker image.
  • [**WORKDIR**](https://docs.docker.com/engine/reference/builder/#workdir) instruction establishes the subdirectory we created as the working directory for any RUN, CMD, ENTRYPOINT, COPY and ADD instructions that follow it in the Dockerfile. /usr/src/app is our working directory.
  • [**COPY**](https://docs.docker.com/engine/reference/builder/#copy) lets us copy files from a source to a destination. We copied the contents of our node application code ( server.js and package.json) from our current directory to the working directory in our docker image.
  • The [**EXPOSE**](https://docs.docker.com/engine/reference/builder/#expose) instruction informs Docker that the container listens on the specified network ports at runtime. We specified port 3000.
  • Last but not least, the[**CMD**](https://docs.docker.com/reference/builder/#cmd) statement specifies the command to start our application. This tells Docker how to run your application. Here we use node server.js which is typically how files are run in Node.js.

With this completed file, we are now ready to build a new Docker image.

6. Building a docker image

Make sure you have Docker up and running. Now that we have defined our Dockerfile, let’s build the image with a title using -t:

docker build -t sample-nodejs-app .

This will output hashes, and alphanumeric strings that identify containers and images saying “Successfully built” on the last line:

Sending build context to Docker daemon  1.966MB
Step 1/7 : FROM node:6-alpine
 ---> 998971a692ca
Step 2/7 : RUN mkdir -p /usr/src/app
 ---> Using cache
 ---> f1aa1c112188
Step 3/7 : WORKDIR /usr/src/app
 ---> Using cache
 ---> b4421b83357b
Step 4/7 : COPY . .
 ---> 836112e1d526
Step 5/7 : RUN npm install
 ---> Running in 1c6b36b5381c
npm WARN sample-nodejs-app@1.0.0 No description
npm WARN sample-nodejs-app@1.0.0 No repository field.
Removing intermediate container 1c6b36b5381c
 ---> 93999e6c807f
Step 6/7 : EXPOSE 3000
 ---> Running in 7419020927f1
Removing intermediate container 7419020927f1
 ---> ed4ac8a31f83
Step 7/7 : CMD [ "node", "server.js" ]
 ---> Running in c77d34f4c873
Removing intermediate container c77d34f4c873
 ---> eaf97859f909
Successfully built eaf97859f909

// dont expect the same values from your terminal.

7. Running a Docker Container

We’ve built the docker image. To see previously created images, run:

docker images

You should see the image we just created as the most recent based on time:

A Complete Guide on Deploying a Node app to AWS with Docker

Copy the image Id. To run the container, we write on the terminal:

docker run -p 80:3000 {image-id}

// fill with your image-id


By default, Docker containers can make connections to the outside world, but the outside world cannot connect to containers. -p publishes all exposed ports to the host interfaces. Here we publish the app to port 80:3000. Because we are running Docker locally, go to http://localhost to view.

A Complete Guide on Deploying a Node app to AWS with Docker

At any moment, you can check running Docker containers by typing:

docker container ls

Finally, you can stop the container from running by:

docker stop {image-id}

Leave the Docker daemon running.

8. Create Registry (ECR) and upload the app image to it

Amazon Elastic Container Registry (ECR) is a fully-managed Docker container registry that makes it easy for developers to store, manage, and deploy Docker container images. Amazon ECR is integrated with Amazon Elastic Container Service (ECS), simplifying your development to production workflow.

The keyword “Elastic” means you can scale the capacity or reduce it as desired.

Steps:

  1. Go to the AWS console and sign in.
  2. Select the EC2 container service and Get started

3. The first run page shows, scroll down and click cancel > enter ECS dashboard.

4. To ensure your CLI can connect with your AWS account, run on the terminal:

aws configure

If your AWS CLI was properly installed, aws configure will ask for the following:

$ aws configure
AWS Access Key ID [None]: accesskey
AWS Secret Access Key [None]: secretkey
Default region name [None]: us-west-2
Default output format [None]:

Get the security credentials from your AWS account under your username > Access keys. Run aws configure again and fill correctly.

4. Create a new repository and enter a name (preferably with the same container name as in your local dev environment for consistency).

For example, use sample-nodejs-app.

A Complete Guide on Deploying a Node app to AWS with Docker

Follow the 5 instructions from the AWS console for building, tagging, and pushing Docker images:

Note: The arguments of the following are mine and will differ from yours, so just follow the steps outlined on your console.

  1. Retrieve the Docker login command that you can use to authenticate your Docker client to your registry:
  2. Note: If you receive an “Unknown options: - no-include-email” error, install the latest version of the AWS CLI. Learn more here.
aws ecr get-login --no-include-email --region us-east-2

2. Run the docker login command that was returned in the previous step (just copy and paste). Note: If you are using Windows PowerShell, run the following command instead:

Invoke-Expression -Command (aws ecr get-login --no-include-email --region us-east-2)

It should output: Login Succeeded.

3. Build your Docker image using the following command. For information on building a Docker file from scratch, see the instructions here. You can skip this step since our image is already built:

docker build -t sample-nodejs-app .

4. With a completed build, tag your image with a keyword (For example, latest) so you can push the image to this repository:

docker tag sample-nodejs-app:latest 559908478199.dkr.ecr.us-east-2.amazonaws.com/sample-nodejs-app:latest

5. Run the following command to push this image to your newly created AWS repository:

docker push 559908478199.dkr.ecr.us-east-2.amazonaws.com/sample-nodejs-app:latest

9. Create a new task definition

Tasks function like the docker run command of the Docker CLI but for multiple containers. They define:

  • Container images (to use)
  • Volumes (if any)
  • Networks Environment variables
  • Port mappings

From Task Definitions in the ECS dashboard, press on the Create new Task Definition (ECS) button:

A Complete Guide on Deploying a Node app to AWS with Docker

Set a task name and use the following steps:

  • Add Container: sample-nodejs-app (the one we pushed).
  • Image: the URL to your container. Mine is 559908478199.dkr.ecr.us-east-2.amazonaws.com/sample-nodejs-app
  • Soft limit: 512
  • Map 80 (host) to 3000 (container) for sample-nodejs-app
  • Env Variables:

NODE_ENV: production

10. Create a Cluster

A cluster is the place where AWS containers run. They use configurations similar to EC2 instances. Define the following:

  • Cluster name: demo-nodejs-app-cluster
  • EC2 instance type: t2.micro

(Note: you select the instances based on the size of your application. Here we’ve selected the smallest. Your selection affects how much money you are billed at the end of the month. Visit here for more information). Thank you Nicholas Kolatsis for pointing out that the previous selection of m4.large was expensive for this tutorial.

  • Number of instances: 1
  • EBS storage: 22
  • Key pair: None
  • VPC: New

When the process is complete, you may choose to click on “View cluster.”

11. Create a service to run it

Go to Task Definition > click demo-nodejs-app > click on the latest revision.

A Complete Guide on Deploying a Node app to AWS with Docker

Inside of the task definition, click on the actions dropdown and select Create servcie

Use the following:

  • Launch type: EC2
  • Service name: demo-nodejs-app-service
  • Number of tasks: 1

Skip through options and click Create service and View service.

A Complete Guide on Deploying a Node app to AWS with Docker

You’ll see its status as PENDING. Give it a little time and it will indicate RUNNING.

Go to Cluster (through a link from the service we just created) > EC2 instances > Click on the container instance to reveal the public DNS.

A Complete Guide on Deploying a Node app to AWS with Docker

A Complete Guide on Deploying a Node app to AWS with Docker

Visit the public DNS to view our app! Mine is [ec2–18–219–113–111.us-east-2.compute.amazonaws.com](http://ec2-18-219-113-111.us-east-2.compute.amazonaws.com/)

12. Conclusion.

Congrats on finishing this post! Grab the code for the Docker part from Github.

#docker #aws #node-js

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A Complete Guide on Deploying a Node app to AWS with Docker
Carmen  Grimes

Carmen Grimes

1595494844

How to start an electric scooter facility/fleet in a university campus/IT park

Are you leading an organization that has a large campus, e.g., a large university? You are probably thinking of introducing an electric scooter/bicycle fleet on the campus, and why wouldn’t you?

Introducing micro-mobility in your campus with the help of such a fleet would help the people on the campus significantly. People would save money since they don’t need to use a car for a short distance. Your campus will see a drastic reduction in congestion, moreover, its carbon footprint will reduce.

Micro-mobility is relatively new though and you would need help. You would need to select an appropriate fleet of vehicles. The people on your campus would need to find electric scooters or electric bikes for commuting, and you need to provide a solution for this.

To be more specific, you need a short-term electric bike rental app. With such an app, you will be able to easily offer micro-mobility to the people on the campus. We at Devathon have built Autorent exactly for this.

What does Autorent do and how can it help you? How does it enable you to introduce micro-mobility on your campus? We explain these in this article, however, we will touch upon a few basics first.

Micro-mobility: What it is

micro-mobility

You are probably thinking about micro-mobility relatively recently, aren’t you? A few relevant insights about it could help you to better appreciate its importance.

Micro-mobility is a new trend in transportation, and it uses vehicles that are considerably smaller than cars. Electric scooters (e-scooters) and electric bikes (e-bikes) are the most popular forms of micro-mobility, however, there are also e-unicycles and e-skateboards.

You might have already seen e-scooters, which are kick scooters that come with a motor. Thanks to its motor, an e-scooter can achieve a speed of up to 20 km/h. On the other hand, e-bikes are popular in China and Japan, and they come with a motor, and you can reach a speed of 40 km/h.

You obviously can’t use these vehicles for very long commutes, however, what if you need to travel a short distance? Even if you have a reasonable public transport facility in the city, it might not cover the route you need to take. Take the example of a large university campus. Such a campus is often at a considerable distance from the central business district of the city where it’s located. While public transport facilities may serve the central business district, they wouldn’t serve this large campus. Currently, many people drive their cars even for short distances.

As you know, that brings its own set of challenges. Vehicular traffic adds significantly to pollution, moreover, finding a parking spot can be hard in crowded urban districts.

Well, you can reduce your carbon footprint if you use an electric car. However, electric cars are still new, and many countries are still building the necessary infrastructure for them. Your large campus might not have the necessary infrastructure for them either. Presently, electric cars don’t represent a viable option in most geographies.

As a result, you need to buy and maintain a car even if your commute is short. In addition to dealing with parking problems, you need to spend significantly on your car.

All of these factors have combined to make people sit up and think seriously about cars. Many people are now seriously considering whether a car is really the best option even if they have to commute only a short distance.

This is where micro-mobility enters the picture. When you commute a short distance regularly, e-scooters or e-bikes are viable options. You limit your carbon footprints and you cut costs!

Businesses have seen this shift in thinking, and e-scooter companies like Lime and Bird have entered this field in a big way. They let you rent e-scooters by the minute. On the other hand, start-ups like Jump and Lyft have entered the e-bike market.

Think of your campus now! The people there might need to travel short distances within the campus, and e-scooters can really help them.

How micro-mobility can benefit you

benefits-micromobility

What advantages can you get from micro-mobility? Let’s take a deeper look into this question.

Micro-mobility can offer several advantages to the people on your campus, e.g.:

  • Affordability: Shared e-scooters are cheaper than other mass transportation options. Remember that the people on your campus will use them on a shared basis, and they will pay for their short commutes only. Well, depending on your operating model, you might even let them use shared e-scooters or e-bikes for free!
  • Convenience: Users don’t need to worry about finding parking spots for shared e-scooters since these are small. They can easily travel from point A to point B on your campus with the help of these e-scooters.
  • Environmentally sustainable: Shared e-scooters reduce the carbon footprint, moreover, they decongest the roads. Statistics from the pilot programs in cities like Portland and Denver showimpressive gains around this key aspect.
  • Safety: This one’s obvious, isn’t it? When people on your campus use small e-scooters or e-bikes instead of cars, the problem of overspeeding will disappear. you will see fewer accidents.

#android app #autorent #ios app #mobile app development #app like bird #app like bounce #app like lime #autorent #bird scooter business model #bird scooter rental #bird scooter rental cost #bird scooter rental price #clone app like bird #clone app like bounce #clone app like lime #electric rental scooters #electric scooter company #electric scooter rental business #how do you start a moped #how to start a moped #how to start a scooter rental business #how to start an electric company #how to start electric scooterrental business #lime scooter business model #scooter franchise #scooter rental business #scooter rental business for sale #scooter rental business insurance #scooters franchise cost #white label app like bird #white label app like bounce #white label app like lime

Carmen  Grimes

Carmen Grimes

1595491178

Best Electric Bikes and Scooters for Rental Business or Campus Facility

The electric scooter revolution has caught on super-fast taking many cities across the globe by storm. eScooters, a renovated version of old-school scooters now turned into electric vehicles are an environmentally friendly solution to current on-demand commute problems. They work on engines, like cars, enabling short traveling distances without hassle. The result is that these groundbreaking electric machines can now provide faster transport for less — cheaper than Uber and faster than Metro.

Since they are durable, fast, easy to operate and maintain, and are more convenient to park compared to four-wheelers, the eScooters trend has and continues to spike interest as a promising growth area. Several companies and universities are increasingly setting up shop to provide eScooter services realizing a would-be profitable business model and a ready customer base that is university students or residents in need of faster and cheap travel going about their business in school, town, and other surrounding areas.

Electric Scooters Trends and Statistics

In many countries including the U.S., Canada, Mexico, U.K., Germany, France, China, Japan, India, Brazil and Mexico and more, a growing number of eScooter users both locals and tourists can now be seen effortlessly passing lines of drivers stuck in the endless and unmoving traffic.

A recent report by McKinsey revealed that the E-Scooter industry will be worth― $200 billion to $300 billion in the United States, $100 billion to $150 billion in Europe, and $30 billion to $50 billion in China in 2030. The e-Scooter revenue model will also spike and is projected to rise by more than 20% amounting to approximately $5 billion.

And, with a necessity to move people away from high carbon prints, traffic and congestion issues brought about by car-centric transport systems in cities, more and more city planners are developing more bike/scooter lanes and adopting zero-emission plans. This is the force behind the booming electric scooter market and the numbers will only go higher and higher.

Companies that have taken advantage of the growing eScooter trend develop an appthat allows them to provide efficient eScooter services. Such an app enables them to be able to locate bike pick-up and drop points through fully integrated google maps.

List of Best Electric Bikes for Rental Business or Campus Facility 2020:

It’s clear that e scooters will increasingly become more common and the e-scooter business model will continue to grab the attention of manufacturers, investors, entrepreneurs. All this should go ahead with a quest to know what are some of the best electric bikes in the market especially for anyone who would want to get started in the electric bikes/scooters rental business.

We have done a comprehensive list of the best electric bikes! Each bike has been reviewed in depth and includes a full list of specs and a photo.

Billy eBike

mobile-best-electric-bikes-scooters https://www.kickstarter.com/projects/enkicycles/billy-were-redefining-joyrides

To start us off is the Billy eBike, a powerful go-anywhere urban electric bike that’s specially designed to offer an exciting ride like no other whether you want to ride to the grocery store, cafe, work or school. The Billy eBike comes in 4 color options – Billy Blue, Polished aluminium, Artic white, and Stealth black.

Price: $2490

Available countries

Available in the USA, Europe, Asia, South Africa and Australia.This item ships from the USA. Buyers are therefore responsible for any taxes and/or customs duties incurred once it arrives in your country.

Features

  • Control – Ride with confidence with our ultra-wide BMX bars and a hyper-responsive twist throttle.
  • Stealth- Ride like a ninja with our Gates carbon drive that’s as smooth as butter and maintenance-free.
  • Drive – Ride further with our high torque fat bike motor, giving a better climbing performance.
  • Accelerate – Ride quicker with our 20-inch lightweight cutout rims for improved acceleration.
  • Customize – Ride your own way with 5 levels of power control. Each level determines power and speed.
  • Flickable – Ride harder with our BMX /MotoX inspired geometry and lightweight aluminum package

Specifications

  • Maximum speed: 20 mph (32 km/h)
  • Range per charge: 41 miles (66 km)
  • Maximum Power: 500W
  • Motor type: Fat Bike Motor: Bafang RM G060.500.DC
  • Load capacity: 300lbs (136kg)
  • Battery type: 13.6Ah Samsung lithium-ion,
  • Battery capacity: On/off-bike charging available
  • Weight: w/o batt. 48.5lbs (22kg), w/ batt. 54lbs (24.5kg)
  • Front Suspension: Fully adjustable air shock, preload/compression damping /lockout
  • Rear Suspension: spring, preload adjustment
  • Built-in GPS

Why Should You Buy This?

  • Riding fun and excitement
  • Better climbing ability and faster acceleration.
  • Ride with confidence
  • Billy folds for convenient storage and transportation.
  • Shorty levers connect to disc brakes ensuring you stop on a dime
  • belt drives are maintenance-free and clean (no oil or lubrication needed)

**Who Should Ride Billy? **

Both new and experienced riders

**Where to Buy? **Local distributors or ships from the USA.

Genze 200 series e-Bike

genze-best-electric-bikes-scooters https://www.genze.com/fleet/

Featuring a sleek and lightweight aluminum frame design, the 200-Series ebike takes your riding experience to greater heights. Available in both black and white this ebike comes with a connected app, which allows you to plan activities, map distances and routes while also allowing connections with fellow riders.

Price: $2099.00

Available countries

The Genze 200 series e-Bike is available at GenZe retail locations across the U.S or online via GenZe.com website. Customers from outside the US can ship the product while incurring the relevant charges.

Features

  • 2 Frame Options
  • 2 Sizes
  • Integrated/Removable Battery
  • Throttle and Pedal Assist Ride Modes
  • Integrated LCD Display
  • Connected App
  • 24 month warranty
  • GPS navigation
  • Bluetooth connectivity

Specifications

  • Maximum speed: 20 mph with throttle
  • Range per charge: 15-18 miles w/ throttle and 30-50 miles w/ pedal assist
  • Charging time: 3.5 hours
  • Motor type: Brushless Rear Hub Motor
  • Gears: Microshift Thumb Shifter
  • Battery type: Removable Samsung 36V, 9.6AH Li-Ion battery pack
  • Battery capacity: 36V and 350 Wh
  • Weight: 46 pounds
  • Derailleur: 8-speed Shimano
  • Brakes: Dual classic
  • Wheels: 26 x 20 inches
  • Frame: 16, and 18 inches
  • Operating Mode: Analog mode 5 levels of Pedal Assist Thrott­le Mode

Norco from eBikestore

norco-best-electric-bikes-scooters https://ebikestore.com/shop/norco-vlt-s2/

The Norco VLT S2 is a front suspension e-Bike with solid components alongside the reliable Bosch Performance Line Power systems that offer precise pedal assistance during any riding situation.

Price: $2,699.00

Available countries

This item is available via the various Norco bikes international distributors.

Features

  • VLT aluminum frame- for stiffness and wheel security.
  • Bosch e-bike system – for their reliability and performance.
  • E-bike components – for added durability.
  • Hydraulic disc brakes – offer riders more stopping power for safety and control at higher speeds.
  • Practical design features – to add convenience and versatility.

Specifications

  • Maximum speed: KMC X9 9spd
  • Motor type: Bosch Active Line
  • Gears: Shimano Altus RD-M2000, SGS, 9 Speed
  • Battery type: Power Pack 400
  • Battery capacity: 396Wh
  • Suspension: SR Suntour suspension fork
  • Frame: Norco VLT, Aluminum, 12x142mm TA Dropouts

Bodo EV

bodo-best-electric-bikes-scootershttp://www.bodoevs.com/bodoev/products_show.asp?product_id=13

Manufactured by Bodo Vehicle Group Limited, the Bodo EV is specially designed for strong power and extraordinary long service to facilitate super amazing rides. The Bodo Vehicle Company is a striking top in electric vehicles brand field in China and across the globe. Their Bodo EV will no doubt provide your riders with high-level riding satisfaction owing to its high-quality design, strength, breaking stability and speed.

Price: $799

Available countries

This item ships from China with buyers bearing the shipping costs and other variables prior to delivery.

Features

  • Reliable
  • Environment friendly
  • Comfortable riding
  • Fashionable
  • Economical
  • Durable – long service life
  • Braking stability
  • LED lighting technology

Specifications

  • Maximum speed: 45km/h
  • Range per charge: 50km per person
  • Charging time: 8 hours
  • Maximum Power: 3000W
  • Motor type: Brushless DC Motor
  • Load capacity: 100kg
  • Battery type: Lead-acid battery
  • Battery capacity: 60V 20AH
  • Weight: w/o battery 47kg

#android app #autorent #entrepreneurship #ios app #minimum viable product (mvp) #mobile app development #news #app like bird #app like bounce #app like lime #autorent #best electric bikes 2020 #best electric bikes for rental business #best electric kick scooters 2020 #best electric kickscooters for rental business #best electric scooters 2020 #best electric scooters for rental business #bird scooter business model #bird scooter rental #bird scooter rental cost #bird scooter rental price #clone app like bird #clone app like bounce #clone app like lime #electric rental scooters #electric scooter company #electric scooter rental business #how do you start a moped #how to start a moped #how to start a scooter rental business #how to start an electric company #how to start electric scooterrental business #lime scooter business model #scooter franchise #scooter rental business #scooter rental business for sale #scooter rental business insurance #scooters franchise cost #white label app like bird #white label app like bounce #white label app like lime

Fredy  Larson

Fredy Larson

1595059664

How long does it take to develop/build an app?

With more of us using smartphones, the popularity of mobile applications has exploded. In the digital era, the number of people looking for products and services online is growing rapidly. Smartphone owners look for mobile applications that give them quick access to companies’ products and services. As a result, mobile apps provide customers with a lot of benefits in just one device.

Likewise, companies use mobile apps to increase customer loyalty and improve their services. Mobile Developers are in high demand as companies use apps not only to create brand awareness but also to gather information. For that reason, mobile apps are used as tools to collect valuable data from customers to help companies improve their offer.

There are many types of mobile applications, each with its own advantages. For example, native apps perform better, while web apps don’t need to be customized for the platform or operating system (OS). Likewise, hybrid apps provide users with comfortable user experience. However, you may be wondering how long it takes to develop an app.

To give you an idea of how long the app development process takes, here’s a short guide.

App Idea & Research

app-idea-research

_Average time spent: two to five weeks _

This is the initial stage and a crucial step in setting the project in the right direction. In this stage, you brainstorm ideas and select the best one. Apart from that, you’ll need to do some research to see if your idea is viable. Remember that coming up with an idea is easy; the hard part is to make it a reality.

All your ideas may seem viable, but you still have to run some tests to keep it as real as possible. For that reason, when Web Developers are building a web app, they analyze the available ideas to see which one is the best match for the targeted audience.

Targeting the right audience is crucial when you are developing an app. It saves time when shaping the app in the right direction as you have a clear set of objectives. Likewise, analyzing how the app affects the market is essential. During the research process, App Developers must gather information about potential competitors and threats. This helps the app owners develop strategies to tackle difficulties that come up after the launch.

The research process can take several weeks, but it determines how successful your app can be. For that reason, you must take your time to know all the weaknesses and strengths of the competitors, possible app strategies, and targeted audience.

The outcomes of this stage are app prototypes and the minimum feasible product.

#android app #frontend #ios app #minimum viable product (mvp) #mobile app development #web development #android app development #app development #app development for ios and android #app development process #ios and android app development #ios app development #stages in app development

Liam Hurst

Liam Hurst

1559965014

A Complete Guide on Deploying a Node app to AWS with Docker

In this guide, I’ll walk you through the steps on how to dockerize a Node.js application and then deploy it to Amazon Web Services (AWS) using Amazon Elastic Container Registry (ECR) and Amazon Elastic Container Service (ECS).

Once you’ve got a web application running locally on your machine, if you want to access it on the internet, you’ve got to deploy it. And instead of just deploying it manually on a virtual machine in the cloud, let’s dockerize the app and then deploy it to the cloud.

Table of Contents

1. Introduction

2. Prerequisites

3. A quick primer on Docker and AWS

4. What we’ll be deploying

5. Creating a Dockerfile

6. Building a docker image

7. Running a docker container

8. Creating the Registry (ECR) and uploading the app image to it

9. Creating a new task definition

10. Creating a cluster

11. Creating a service to run it

12. Conclusion

1. Introduction

Writing code that does stuff is something most developers are familiar with. Sometimes, we need to take the responsibility of a SysAdmin or DevOps engineer and deploy our codebase to production where it will help a business solve problems for customers.

In this tutorial, I’ll show you how to dockerize a Node.js application and deploy it to Amazon Web Service (AWS) using Amazon ECR (Elastic Container Registry) and ECS (Elastic container service).

2. Prerequisites

To follow through this tutorial, you’ll need the following:

  1. Node and Npm: Follow this link to install the latest versions.
  2. Basic knowledge of Node.js.
  3. Docker: The installation provides Docker Engine, Docker CLI client, and other cool stuff. Follow the instructions for your operating system. To check if the installation worked, fire this on the terminal:
docker --version

The command above should display the version number. If it doesn’t, the installation didn’t complete properly.

4. AWS account: Sign up for a free tier. There is a waiting period to verify your phone number and bank card. After this, you will have access to the console.

5. AWS CLI: Follow the instructions for your OS. You need Python installed.

3. A quick primer on Docker and AWS

Docker is an open source software that allows you to pack an application together with the required dependencies and environment in a ‘Container’ that you can ship and run anywhere. It is independent of platforms or hardware, and therefore the containerized application can run in any environment in an isolated fashion.

Docker containers solve many issues, such as when an app works on a co-worker’s computer but doesn’t run on yours, or it works in the local development environment but doesn’t work when you deploy it to a server.

A Complete Guide on Deploying a Node app to AWS with Docker

Amazon Web Services (AWS) offers a reliable, scalable, and inexpensive cloud computing service for businesses. As I mentioned before, this tutorial will focus on using the ECR and ECS services.

4. What we’ll be deploying

Let’s quickly build a sample app that we’ll use for the purpose of this tutorial. It going to be very simple Node.js app.

Enter the following in your terminal:

// create a new directory
mkdir sample-nodejs-app
// change to new directory
cd sample-nodejs-app
// Initialize npm
npm init -y
// install express
npm install express
// create an server.js file
touch server.js

Open server.js and paste the code below into it:

// server.js
const express = require('express')const app = express()
app.get('/', (req, res) => {    res.send('Hello world from a Node.js app!')})
app.listen(3000, () => {    console.log('Server is up on 3000')})

Start the app with:

node server.js

Access it on http://localhost:3000. You should get Hello world from a Node.js app! displayed in your browser. The complete code is available on GitHub.

Now let’s take our very important app to production 😄.

5. Creating a Dockerfile

We are going to start dockerizing the app by creating a single file called a Dockerfile in the base of our project directory.

The Dockerfile is the blueprint from which our images are built. And then images turn into containers, in which we run our apps.

Every Dockerfile starts with a base image as its foundation. There are two ways to approach creating your Dockerfile:

  1. Use a plain OS base image (For example, Ubuntu OS, Debian, CentOS etc.) and install an application environment in it such as Node.js OR
  2. Use an environment-ready base image to get an OS image with an application environment already installed.

We will proceed with the second approach. We can use the official Node.js image hosted on Dockerhub which is based on Alpine Linux.

Write this in the Dockerfile:

FROM node:8-alpine
RUN mkdir -p /usr/src/app
WORKDIR /usr/src/app
COPY . .
RUN npm install
EXPOSE 3000
CMD [ "node", "server.js" ]

Let’s walk through this line by line to see what is happening here, and why.

FROM node:8-alpine

Here, we are building our Docker image using the official Node.js image from Dockerhub (a repository for base images).

  • Start our Dockerfile with a [**FROM**](https://docs.docker.com/reference/builder/#from) statement. This is where you specify your base image.
  • The [**RUN**](https://docs.docker.com/reference/builder/#run) statement will allow us to execute a command for anything you want to do. We created a subdirectory /usr/src/app that will hold our application code within the docker image.
  • [**WORKDIR**](https://docs.docker.com/engine/reference/builder/#workdir) instruction establishes the subdirectory we created as the working directory for any RUN, CMD, ENTRYPOINT, COPY and ADD instructions that follow it in the Dockerfile. /usr/src/app is our working directory.
  • [**COPY**](https://docs.docker.com/engine/reference/builder/#copy) lets us copy files from a source to a destination. We copied the contents of our node application code ( server.js and package.json) from our current directory to the working directory in our docker image.
  • The [**EXPOSE**](https://docs.docker.com/engine/reference/builder/#expose) instruction informs Docker that the container listens on the specified network ports at runtime. We specified port 3000.
  • Last but not least, the[**CMD**](https://docs.docker.com/reference/builder/#cmd) statement specifies the command to start our application. This tells Docker how to run your application. Here we use node server.js which is typically how files are run in Node.js.

With this completed file, we are now ready to build a new Docker image.

6. Building a docker image

Make sure you have Docker up and running. Now that we have defined our Dockerfile, let’s build the image with a title using -t:

docker build -t sample-nodejs-app .

This will output hashes, and alphanumeric strings that identify containers and images saying “Successfully built” on the last line:

Sending build context to Docker daemon  1.966MB
Step 1/7 : FROM node:6-alpine
 ---> 998971a692ca
Step 2/7 : RUN mkdir -p /usr/src/app
 ---> Using cache
 ---> f1aa1c112188
Step 3/7 : WORKDIR /usr/src/app
 ---> Using cache
 ---> b4421b83357b
Step 4/7 : COPY . .
 ---> 836112e1d526
Step 5/7 : RUN npm install
 ---> Running in 1c6b36b5381c
npm WARN sample-nodejs-app@1.0.0 No description
npm WARN sample-nodejs-app@1.0.0 No repository field.
Removing intermediate container 1c6b36b5381c
 ---> 93999e6c807f
Step 6/7 : EXPOSE 3000
 ---> Running in 7419020927f1
Removing intermediate container 7419020927f1
 ---> ed4ac8a31f83
Step 7/7 : CMD [ "node", "server.js" ]
 ---> Running in c77d34f4c873
Removing intermediate container c77d34f4c873
 ---> eaf97859f909
Successfully built eaf97859f909

// dont expect the same values from your terminal.

7. Running a Docker Container

We’ve built the docker image. To see previously created images, run:

docker images

You should see the image we just created as the most recent based on time:

A Complete Guide on Deploying a Node app to AWS with Docker

Copy the image Id. To run the container, we write on the terminal:

docker run -p 80:3000 {image-id}

// fill with your image-id


By default, Docker containers can make connections to the outside world, but the outside world cannot connect to containers. -p publishes all exposed ports to the host interfaces. Here we publish the app to port 80:3000. Because we are running Docker locally, go to http://localhost to view.

A Complete Guide on Deploying a Node app to AWS with Docker

At any moment, you can check running Docker containers by typing:

docker container ls

Finally, you can stop the container from running by:

docker stop {image-id}

Leave the Docker daemon running.

8. Create Registry (ECR) and upload the app image to it

Amazon Elastic Container Registry (ECR) is a fully-managed Docker container registry that makes it easy for developers to store, manage, and deploy Docker container images. Amazon ECR is integrated with Amazon Elastic Container Service (ECS), simplifying your development to production workflow.

The keyword “Elastic” means you can scale the capacity or reduce it as desired.

Steps:

  1. Go to the AWS console and sign in.
  2. Select the EC2 container service and Get started

3. The first run page shows, scroll down and click cancel > enter ECS dashboard.

4. To ensure your CLI can connect with your AWS account, run on the terminal:

aws configure

If your AWS CLI was properly installed, aws configure will ask for the following:

$ aws configure
AWS Access Key ID [None]: accesskey
AWS Secret Access Key [None]: secretkey
Default region name [None]: us-west-2
Default output format [None]:

Get the security credentials from your AWS account under your username > Access keys. Run aws configure again and fill correctly.

4. Create a new repository and enter a name (preferably with the same container name as in your local dev environment for consistency).

For example, use sample-nodejs-app.

A Complete Guide on Deploying a Node app to AWS with Docker

Follow the 5 instructions from the AWS console for building, tagging, and pushing Docker images:

Note: The arguments of the following are mine and will differ from yours, so just follow the steps outlined on your console.

  1. Retrieve the Docker login command that you can use to authenticate your Docker client to your registry:
  2. Note: If you receive an “Unknown options: - no-include-email” error, install the latest version of the AWS CLI. Learn more here.
aws ecr get-login --no-include-email --region us-east-2

2. Run the docker login command that was returned in the previous step (just copy and paste). Note: If you are using Windows PowerShell, run the following command instead:

Invoke-Expression -Command (aws ecr get-login --no-include-email --region us-east-2)

It should output: Login Succeeded.

3. Build your Docker image using the following command. For information on building a Docker file from scratch, see the instructions here. You can skip this step since our image is already built:

docker build -t sample-nodejs-app .

4. With a completed build, tag your image with a keyword (For example, latest) so you can push the image to this repository:

docker tag sample-nodejs-app:latest 559908478199.dkr.ecr.us-east-2.amazonaws.com/sample-nodejs-app:latest

5. Run the following command to push this image to your newly created AWS repository:

docker push 559908478199.dkr.ecr.us-east-2.amazonaws.com/sample-nodejs-app:latest

9. Create a new task definition

Tasks function like the docker run command of the Docker CLI but for multiple containers. They define:

  • Container images (to use)
  • Volumes (if any)
  • Networks Environment variables
  • Port mappings

From Task Definitions in the ECS dashboard, press on the Create new Task Definition (ECS) button:

A Complete Guide on Deploying a Node app to AWS with Docker

Set a task name and use the following steps:

  • Add Container: sample-nodejs-app (the one we pushed).
  • Image: the URL to your container. Mine is 559908478199.dkr.ecr.us-east-2.amazonaws.com/sample-nodejs-app
  • Soft limit: 512
  • Map 80 (host) to 3000 (container) for sample-nodejs-app
  • Env Variables:

NODE_ENV: production

10. Create a Cluster

A cluster is the place where AWS containers run. They use configurations similar to EC2 instances. Define the following:

  • Cluster name: demo-nodejs-app-cluster
  • EC2 instance type: t2.micro

(Note: you select the instances based on the size of your application. Here we’ve selected the smallest. Your selection affects how much money you are billed at the end of the month. Visit here for more information). Thank you Nicholas Kolatsis for pointing out that the previous selection of m4.large was expensive for this tutorial.

  • Number of instances: 1
  • EBS storage: 22
  • Key pair: None
  • VPC: New

When the process is complete, you may choose to click on “View cluster.”

11. Create a service to run it

Go to Task Definition > click demo-nodejs-app > click on the latest revision.

A Complete Guide on Deploying a Node app to AWS with Docker

Inside of the task definition, click on the actions dropdown and select Create servcie

Use the following:

  • Launch type: EC2
  • Service name: demo-nodejs-app-service
  • Number of tasks: 1

Skip through options and click Create service and View service.

A Complete Guide on Deploying a Node app to AWS with Docker

You’ll see its status as PENDING. Give it a little time and it will indicate RUNNING.

Go to Cluster (through a link from the service we just created) > EC2 instances > Click on the container instance to reveal the public DNS.

A Complete Guide on Deploying a Node app to AWS with Docker

A Complete Guide on Deploying a Node app to AWS with Docker

Visit the public DNS to view our app! Mine is [ec2–18–219–113–111.us-east-2.compute.amazonaws.com](http://ec2-18-219-113-111.us-east-2.compute.amazonaws.com/)

12. Conclusion.

Congrats on finishing this post! Grab the code for the Docker part from Github.

#docker #aws #node-js

Harry Patel

Harry Patel

1614145832

A Complete Process to Create an App in 2021

It’s 2021, everything is getting replaced by a technologically emerged ecosystem, and mobile apps are one of the best examples to convey this message.

Though bypassing times, the development structure of mobile app has also been changed, but if you still follow the same process to create a mobile app for your business, then you are losing a ton of opportunities by not giving top-notch mobile experience to your users, which your competitors are doing.

You are about to lose potential existing customers you have, so what’s the ideal solution to build a successful mobile app in 2021?

This article will discuss how to build a mobile app in 2021 to help out many small businesses, startups & entrepreneurs by simplifying the mobile app development process for their business.

The first thing is to EVALUATE your mobile app IDEA means how your mobile app will change your target audience’s life and why your mobile app only can be the solution to their problem.

Now you have proposed a solution to a specific audience group, now start to think about the mobile app functionalities, the features would be in it, and simple to understand user interface with impressive UI designs.

From designing to development, everything is covered at this point; now, focus on a prelaunch marketing plan to create hype for your mobile app’s targeted audience, which will help you score initial downloads.

Boom, you are about to cross a particular download to generate a specific revenue through your mobile app.

#create an app in 2021 #process to create an app in 2021 #a complete process to create an app in 2021 #complete process to create an app in 2021 #process to create an app #complete process to create an app