codemasta / azure-cost-cli

CLI tool to perform cost analysis on your Azure subscription

Azure Cost CLI

This is a simple command line tool to get the cost of your Azure subscription. It uses the Azure Cost Management API to get the cost and output the results to the console or JSON. E.g. so it can be used in a workflow to get the cost of your subscription and use it in subsequent steps.

Installation

You can install this tool globally, using the dotnet tool command:

dotnet tool install --global azure-cost-cli 

Upgrading

When there is a new version available on NuGet, you can use the dotnet tool update command to upgrade:

dotnet tool update --global azure-cost-cli 

With a --version parameter, you can specify a specific version to install. Use the --no-cache parameter to force a re-download of the package if it cannot find the latest version.

Usage

You can invoke the tool using the azure-cost command. You can use the --help parameter to get a list of all available options.

azure-cost --help

Which will show:

USAGE:
    azure-cost [OPTIONS]

EXAMPLES:
    azure-cost accumulatedCost -s 00000000-0000-0000-0000-000000000000
    azure-cost accumulatedCost -s 00000000-0000-0000-0000-000000000000 -o json
    azure-cost costByResource -s 00000000-0000-0000-0000-000000000000 -o text

OPTIONS:
    -h, --help            Prints help information
        --debug           Increase logging verbosity to show all debug logs  
    -s, --subscription    The subscription id to use
    -o, --output          The output format to use. Defaults to Console (Console, Json, JsonC, Markdown, Text, Csv)
    -t, --timeframe       The timeframe to use for the costs. Defaults to BillingMonthToDate. When set to Custom, specify the from and to dates using the --from and --to options
        --from            The start date to use for the costs. Defaults to the first day of the previous month
        --to              The end date to use for the costs. Defaults to the current date
        --others-cutoff    10         The number of items to show before collapsing the rest into an 'Others' item                                                                
        --query           JMESPath query string. See http://jmespath.org/ for more information and examples     

COMMANDS:
    accumulatedCost    Show the accumulated cost details
    costByResource     Show the cost details by resource

When you do not specify a subscription id, it will fetch the actively selected one of the az cli instead.

If the application is not working properly, you can use the --debug parameter to increase the logging verbosity and see more details.

This tool uses the Azure Cost Management API to get the cost. Not all subscriptions have access to this API. To check if your subscription has access, you can use the az account subscription show --subscription-id yourid --query '[subscriptionPolicies.quotaId]' -o tsv command. Validate the resulting quota id with the ones on the Microsoft list to see if it is supported. Running the tool with the --debug parameter will also show the quota id that is used.

There is a pretty strict rate limit on the cost api; the calls are retried after a 429 is received, but it might take a while before the call succeeds as it honors the retry time out.

Authentication

To make the call to the Azure cost API, you do need to run this from a user account with permissions to access the cost overview of the subscription. Further more, it needs to find the active credentials and it does so by using the ChainedTokenCredential provider which will look for the az cli token first. Make sure to run az login (with optionally the --tenant parameter) to make sure you have an active session.

Use in a GitHub workflow

You can use this tool in a GitHub workflow to get the cost of your subscription and store the results in markdown as a Job Summary. This can be used to get a quick overview of the cost of your subscription.

name: Azure Cost CLI Workflow

on:
  workflow_dispatch:
    inputs:
      az-subscription-id:
        description: 'Azure Subscription ID'
        required: true
jobs:
  run-azure-cost-cli:
    runs-on: ubuntu-latest
    steps:
      - name: Azure Login
        uses: azure/login@v1
        with:
          creds: ${{ secrets.AZURE_CREDENTIALS }}

      - name: Install Azure Cost CLI
        run: dotnet tool install -g azure-cost-cli

      - name: Run Azure Cost CLI
        run: azure-cost accumulatedCost -o markdown --subscription ${{ github.event.inputs.az-subscription-id }} >> $GITHUB_STEP_SUMMARY

The last step output the markdown to the Job Summary. This can be used to show the cost of the subscription in the workflow summary. Use it on a schedule to get for example a daily overview. Alternatively you can use the -o json parameter to get the results in JSON format and use it for further processing.

Commands

Accumulated Cost

This will retrieve the accumulated cost of the subscription. This is the total cost of the subscription since the beginning of the period specified. We will try to fetch the forecast as well and organise by location, type and resource group. You can use the different formatters to get the results in different formats.

This is the default command when you do not specify a command.

azure-cost accumulatedCost -s 574385a9-08e9-49fe-91a2-27660d92b8f5

Cost By Resource

This will retrieve the cost of the subscription by resource. This will fetch the resource details including the meter information. It is up to the formatter how this is returned. Use the json formatter to get the full details.

azure-cost costByResource -s 574385a9-08e9-49fe-91a2-27660d92b8f5 -o json

Query

Use the --query to specify a JMESPath expression. This allows you to filter the results. For example, to get the yesterday cost of the subscription, you can use the following query:

azure-cost -s 574385a9-08e9-49fe-91a2-27660d92b8f5 -o json --query "totals.yesterdayCost"

Or to list only the resource groups:

azure-cost -s 574385a9-08e9-49fe-91a2-27660d92b8f5 -o json --query "ByResourceGroup[*].[ResourceGroup, Cost]"

will output:

[["mindbyte-sand-api",28.94824],["rg-test",16.457219149662315],["rg-weu",0.252499694771765],["cloud-storage-westeu",0.183537445632]]

For the JMESPath parsing, it uses the JMESPath.Net library. Not all constructions might be implemented yet. If you find a query that does not work, please open an issue with a reproducable path at their repo.

Output formats

The tool supports multiple output formats. The default is Console which will output the results to the console. You can specify a different format using the --output parameter. The following formats are supported:

Console

The default output format. It will output the results to the console in a graphical way.

Json / JsonC

The Json format is great for further processing of the data. It will output the results in a JSON format to the console. Using the > operator, you can redirect the output to a file. Use jsonc to get a colorized output.

azure-cost accumulatedCost -s 00000000-0000-0000-0000-000000000000 -o json > cost.json

{
  "totals": {
    "todaysCost": 0.521266170218092,
    "yesterdayCost": 2.367501588413211,
    "lastSevenDaysCost": 17.089367673307038,
    "lastThirtyDaysCost": 30.887236456720686
  },
  "cost": [
    {
      "Date": "2023-04-01",
      "Cost": 2.365348403419757,
      "Currency": "EUR"
    },
    // snip
  ],
  "forecastedCosts": [
    {
      "Date": "2023-04-13",
      "Cost": 0,
      "Currency": "EUR"
    },
    // snip
  ],
  "byServiceNames": [
    {
      "ServiceName": "API Management",
      "Cost": 19.524664,
      "Currency": "EUR"
    },
    // snip
  ],
  "ByLocation": [
    {
      "Location": "EU West",
      "Cost": 30.68711937543843,
      "Currency": "EUR"
    },
    // snip
  ],
   "ByResourceGroup": [
    {
      "ResourceGroup": "rg-west-eu",
      "Cost": 30.68711937543843,
      "Currency": "EUR"
    },
    // snip
  ]
}

Text

A simple textual format. It will output the results in a simple text format.

Azure Cost Overview for 574385a9-08e9-49fe-91a2-27660d92b8f5 from 01/04/2023 to 14/04/2023                                                                    

Totals:
  Today: 0,52 EUR
  Yesterday: 2,37 EUR
  Last 7 days: 17,09 EUR
  Last 30 days: 30,89 EUR

By Service Name:
  API Management: 19,52 EUR
  Azure App Service: 5,32 EUR
  Azure Monitor: 3,67 EUR
  Container Registry: 2,06 EUR
  Log Analytics: 0,17 EUR
  Storage: 0,13 EUR
  Key Vault: 0,00 EUR
  Bandwidth: 0,00 EUR

By Location:
  EU West: 30,69 EUR
  Unknown: 0,20 EUR
  US West: 0,00 EUR
  US West 2: 0,00 EUR

Csv

A CSV format. It will output the results in a CSV format which can be used in Excel or other tools. It will use the default culture of your system to format the numbers.

azure-cost accumulatedCost -s 574385a9-08e9-49fe-91a2-27660d92b8f5 -o csv > cost.csv

Date,Cost,CostUsd,Currencycost
01/05/2023,"2,366588585885843","2,563252097372957",EUR
02/05/2023,"2,36675103555328","2,563428046607759",EUR
03/05/2023,"2,366643737168579","2,563311831727289",EUR
04/05/2023,"2,366407861778791","2,563056355092609",EUR
05/05/2023,"2,367958990965315","2,564736383114534",EUR
06/05/2023,"1,904236728129323","2,06247880023687",EUR
07/05/2023,"2,36694351092248","2,613934066287242",EUR
08/05/2023,"0,521257579853968","0,575650808311731",EUR

Markdown

A markdown format. It will output the results in a series of simple tables.

azure-cost accumulatedCost -s 574385a9-08e9-49fe-91a2-27660d92b8f5 -o markdown > cost.md

# Azure Cost Overview

> Details for subscription id `574385a9-08e9-49fe-91a2-27660d92b8f5` from **01/04/2023** to **20/04/2023**

## Totals

|Period|Amount|
|---|---:|
|Today|0,00 EUR|
|Yesterday|1,27 EUR|
|Last 7 days|15,48 EUR|
|Last 30 days|45,84 EUR|

## By Service Name

|Service|Amount|
|---|---:|
|API Management|28,95 EUR|
|Azure App Service|7,89 EUR|
|Azure Monitor|5,51 EUR|
|Container Registry|3,06 EUR|
|Log Analytics|0,25 EUR|
|Storage|0,19 EUR|
|Key Vault|0,00 EUR|
|Bandwidth|0,00 EUR|

## By Location

|Location|Amount|
|---|---:|
|EU West|45,55 EUR|
|Unknown|0,30 EUR|
|US West|0,00 EUR|
|US North Central|0,00 EUR|
|US West 2|0,00 EUR|

## By Resource Group

|Resource Group|Amount|
|---|---:|
|mindbyte-sand-api|28,95 EUR|
|mindbyte-sand-azuremonitor|5,51 EUR|
|mindbyte-sand-registry|3,06 EUR|

<sup>Generated at 2023-04-21 07:40:23</sup>

Excluded in the above sample, but it will also include mermaidjs diagrams as well.