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mr-krabs

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mr-krabs

A package to lower your costs with AWS resources

  • 1.1.0
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mr-krabs

mr-krabs

:crab: :moneybag: A package to lower your AWS costs

Installation

  1. Make sure you have your AWS credentials correctly setup

  2. Install the module:

npm install --save mr-krabs

Usage

There are basically 2 ways of setting up the intended cluster and service name patterns:

1 - By providing a file called krabs.json at the root of your project:

{
  "clusterName": "demoClusterName",
  "sericeName": "demoServiceName"
}

2 - By providing the config at the function calls as the demo above

const mrKrabs = require('mr-krabs')

// DETAILS
function getDetailsOfDemoServices () {
  return mrKrabs.listClusters({ clusterName: 'demoCluster' })
    .then(([clusterName]) =>
      mrKrabs.listServices({ clusterName, serviceName: 'demoServiceName' })
        .then(servicesNames => mrKrabs.getServicesDetails(servicesNames, clusterName))
    )
}

// UPSCALE
function upscaleDemoServices () {
  return mrKrabs.listClusters({ clusterName: 'demoCluster' })
  .then(clusters =>
    Promise.all(
      clusters.map(clusterName =>
        mrKrabs.upScaleAllStoppedServices({ clusterName, serviceName: 'demoServiceName' })
      )
    )
  )
}


// DOWNSCALE
function downscaleDemoServices () {
  return mrKrabs.listClusters({ clusterName: 'demoCluster' })
    .then(clusters =>
      Promise.all(
        clusters.map(clusterName =>
          mrKrabs.downScaleAllRuningServices({ clusterName, serviceName: 'demoServiceName' })
        )
      )
    )
}

// Full flow of upscale and downscale all services of the defined clusters/services
getDetailsOfDemoServices()
  .then(before => {
    console.log('--- BEFORE ---')
    console.log(before)
    return upscaleDemoServices()
  })
  .then(getDetailsOfDemoServices)
  .then(middle => {
    console.log('--- MIDDLE ---')
    console.log(middle)
    return downscaleDemoServices()
  })
  .then(getDetailsOfDemoServices)
  .then(after => {
    console.log('--- AFTER ---')
    console.log(after)
  })

You can also mix settings by adding either the config file and supplying the config params, just keep in mind that the precendence order respectively function param and krabs.json.

License

mr-krabs is MIT licensed.

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Package last updated on 07 May 2019

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