Fairwinds Insights Documentation

# AWS Costs

The AWS Costs reports syncs your AWS billing data to Insights, so Insights can know precisely what you're spending on nodes, and use that information to infer accurate workload costs.

This requires some setup on your end:

  • Ensure nodes for different clusters are tagged in a consistent way
    • E.g. nodes in your staging cluster have tag cluster=staging, and your production cluster nodes have cluster=prod
  • Create an S3 bucket where billing data can be stored
  • Create an Athena database for querying the S3 data
  • Create a Glue crawler to populate the data
  • Finally, install the insights-agent with the aws-costs report configured

For convenience, we've provided some Terraform which can create the necessary AWS resources below.

# Agent Configuration

Once the AWS resources are in place, you'll need to configure the AWS agent to start uploading your cost data. Your values.yaml should include the section below, replacing any values with your own.

awscosts:
  enabled: true

  # The AWS credentials should come from the aws-costs-service-account created below.
  # We recommend creating the awscostssecret yourself and specify secretName, but you can
  # also pass awsAccessKeyId and awsSecretAccessKey directly to the helm chart.
  secretName: awscostssecret
  awsAccessKeyId: ''
  awsSecretAccessKey: ''

  region: us-east-1
  database: athena_cur_database
  table: fairwinds_insights_cur_report
  catalog: AwsDataCatalog
  workgroup: cur_athena_workgroup

  # tagkey is the key used to tag your nodes based on which cluster they belong to
  tagkey: cluster
  # tagvalue is the value used for this particular cluster
  tagvalue: staging

# Terraform

Note that you may have to apply the files below twice in order to get them to sync fully.

# provider.tf

provider "aws" {
  region  = "us-east-1"
  profile = "default"
}

# variables.tf

variable "s3_bucket_name" {
  type    = string
  default = "fairwinds-insights-cur-report"
}
variable "s3_region" {
  type    = string
  default = "us-east-1"
}
variable "time_unit" {
  type    = string
  default = "HOURLY"
}
variable "aws_region" {
  type    = string
  default = "us-east-1"
}

# iam.tf

resource "aws_iam_role" "crawler-service-role" {
  name               = "crawler-service-role"
  assume_role_policy = data.aws_iam_policy_document.crawler-assume-policy.json
}
data "aws_iam_policy_document" "crawler-assume-policy" {
  statement {
    actions = ["sts:AssumeRole"]
    principals {
      type        = "Service"
      identifiers = ["glue.amazonaws.com"]
    }
  }
}
resource "aws_iam_role_policy_attachment" "AWSGlueServiceRole-attachment" {
  policy_arn = "arn:aws:iam::aws:policy/service-role/AWSGlueServiceRole"
  role       = aws_iam_role.crawler-service-role.name
}
resource "aws_iam_policy" "cur-report-s3-access" {
  name   = "cur-report-s3-access"
  path   = "/"
  policy = <<EOF
{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": [
        "s3:ListBucket"
      ],
      "Resource": ["arn:aws:s3:::${var.s3_bucket_name}"],
      "Condition": {}
    },
    {
      "Effect": "Allow",
      "Action": [
        "s3:*"
      ],
      "Resource": [
        "arn:aws:s3:::${var.s3_bucket_name}/*"
      ]
    }
  ]
}
EOF
}

resource "aws_iam_role_policy_attachment" "cur-report-s3-access" {
  role       = aws_iam_role.crawler-service-role.name
  policy_arn = aws_iam_policy.cur-report-s3-access.arn
}

resource "aws_s3_bucket_policy" "s3-bucket-cur-report-policy" {
  bucket = aws_s3_bucket.cur_bucket.id
  policy = <<EOF
{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Principal": {
        "Service": "billingreports.amazonaws.com"
      },
      "Action": [
        "s3:GetBucketAcl",
        "s3:GetBucketPolicy"
      ],
      "Resource":"arn:aws:s3:::${var.s3_bucket_name}"
    },
    {
      "Effect": "Allow",
      "Principal": {
        "Service": "billingreports.amazonaws.com"
      },
      "Action": "s3:PutObject",
      "Resource": "arn:aws:s3:::${var.s3_bucket_name}/*"
    }
  ]
}
EOF
}

resource "aws_iam_user" "aws-costs-service-account" {
  name = "aws-costs-service-account"
  path = "/"
  tags = {
    tag-key = "service-account"
  }
}
resource "aws_iam_user_policy" "aws-costs-service-policy" {
  name = "aws-costs-service-policy"
  user = aws_iam_user.aws-costs-service-account.name

  policy = <<EOF
{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": [
        "athena:StartQueryExecution",
        "athena:GetQueryExecution",
        "athena:GetQueryResults",
        "glue:GetDatabase",
        "glue:GetTable",
        "glue:GetPartition",
        "glue:GetPartitions",
        "glue:GetCrawler",
        "glue:GetTags"
      ],
      "Resource": "*"
    },
    {
      "Effect": "Allow",
      "Action": [
          "s3:GetBucketLocation",
          "s3:GetObject",
          "s3:ListBucket",
          "s3:ListBucketMultipartUploads",
          "s3:ListMultipartUploadParts",
          "s3:PutObject"
      ],
      "Resource": [
          "arn:aws:s3:::fairwinds-insights-cost-report-poc",
          "arn:aws:s3:::fairwinds-insights-cost-report-poc/*"
      ]
    }    
  ]
}
EOF
}

# main.tf

resource "aws_s3_bucket" "cur_bucket" {
  bucket = var.s3_bucket_name
  acl    = "private"
  server_side_encryption_configuration {
    rule {
      apply_server_side_encryption_by_default {
        sse_algorithm = "AES256"
      }
    }
  }
}
resource "aws_glue_crawler" "cur_report_crawler" {
  database_name = "athena_cur_database"
  schedule      = "cron(0/15 * * * ? *)"
  name          = "cur_report_crawler"
  role          = "crawler-service-role"
  configuration = jsonencode(
    {
      Grouping = {
        TableGroupingPolicy = "CombineCompatibleSchemas"
      }
      CrawlerOutput = {
        Partitions = { AddOrUpdateBehavior = "InheritFromTable" }
      }
      Version = 1
    }
  )
  s3_target {
    path = format("s3://%s/fairwinds-insights-cur/fairwinds-insights-cur-report/", var.s3_bucket_name)
  }
}
resource "aws_athena_database" "athena_cur_database" {
  name   = "athena_cur_database"
  bucket = var.s3_bucket_name
  force_destroy = true
}
resource "aws_cur_report_definition" "fairwinds_insights_cur_report" {
  report_name                = "fairwinds-insights-cur-report"
  time_unit                  = var.time_unit
  format                     = "Parquet"
  compression                = "Parquet"
  additional_schema_elements = ["RESOURCES"]
  s3_bucket                  = var.s3_bucket_name
  s3_region                  = var.s3_region
  s3_prefix                  = "fairwinds-insights-cur"
  additional_artifacts       = ["ATHENA"]
  report_versioning          = "OVERWRITE_REPORT"
  depends_on                 = [aws_s3_bucket.cur_bucket]
}
resource "aws_athena_workgroup" "cur_athena_workgroup" {
  name = "cur_athena_workgroup"
  configuration {
    enforce_workgroup_configuration    = true
    publish_cloudwatch_metrics_enabled = true
    result_configuration {
      output_location = format("s3://%s/fairwinds-insights-cur/fairwinds-insights-cur-report/output", var.s3_bucket_name)
    }
  }
}

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