Truefoundry integrates with Kubecost to provide cost visibility for your deployments. Kubecost is one of the applications that can be installed on the cluster. Once you install the application, you will start getting cost updates on the Truefoundry portal. However, by default, Kubecost is not able to pull the spot instance prices - for this you need to setup Spot Datafeed collection on your AWS account. This guide provides a quick way to setup spot data-feed collection.

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AWS Spot Integration

  1. Run the following bash script. Please replace profile, region and cluster_name before running
# Enter your profile, region, and cluster name
export profile="default"
export region=""
export cluster_name=""

# (Do not edit) Declares some variables
export bucket_name=$cluster_name-kubecost
export account_id=$(aws sts get-caller-identity --query "Account" --output text --profile $profile)
export oidc_provider=$(aws eks describe-cluster --name $cluster_name --region $region --query "cluster.identity.oidc.issuer" --output text --profile $profile | sed -e "s/^https:\/\///")
export role_arn_name=$cluster_name-kubecost-role-arn
export namespace=kubecost
export service_account=kubecost-cost-analyzer


# Create s3 bucket to store spot data feed
aws s3api create-bucket \
    --bucket $bucket_name \
    --region $region \
    --object-ownership ObjectWriter \
    --profile $profile

# Subscribe to spot data feed
aws ec2 create-spot-datafeed-subscription \
    --bucket $bucket_name \
    --region $region \
    --profile $profile


# Create IAM policy to access the s3 bucket
## Create policy.json
cat >policy.json <<EOF
{
  "Version": "2012-10-17",
  "Statement": [
    {
        "Sid": "SpotDataFeed",
        "Effect": "Allow",
        "Action": [
          "s3:ListAllMyBuckets",
          "s3:ListBucket",
          "s3:List*",
          "s3:Get*"
        ],
        "Resource": "arn:aws:s3:::$bucket_name*"
    }
  ]
} 
EOF

## Create policy
aws iam create-policy \
    --policy-name SpotDataFeed \
    --policy-document file://policy.json \
    --profile $profile

# Create IAM role to assume the role as service account
## Create trust-relationship.json
cat >trust-relationship.json <<EOF
{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Principal": {
        "Federated": "arn:aws:iam::$account_id:oidc-provider/$oidc_provider"
      },
      "Action": "sts:AssumeRoleWithWebIdentity",
      "Condition": {
        "StringEquals": {
          "$oidc_provider:aud": "sts.amazonaws.com",
          "$oidc_provider:sub": "system:serviceaccount:$namespace:$service_account"
        }
      }
    }
  ]
}
EOF

## Create role
aws iam create-role \
    --role-name $role_arn_name \
    --assume-role-policy-document file://trust-relationship.json \
    --profile $profile

## Attach policy to role
aws iam attach-role-policy \
    --role-name $role_arn_name \
    --policy-arn=arn:aws:iam::$account_id:policy/SpotDataFeed \
    --profile $profile

# Print the role ARN
echo "Role ARN: arn:aws:iam::$account_id:role/$role_arn_name"
  1. Nagivate to Workspaces in TrueFoundry UI and edit kubecost workspace in your cluster.
  2. Switch toShow Advanced options and add Service Account with name: kubecost-cost-analyzer and role arn value as arn:aws:iam::<account_id>:role/<role-arn-name>
  3. Navigate to Deployments > Helm and edit kubecost. Then, add following section to values:
kubecostProductConfigs:
  projectID: "<account_id>"
  awsSpotDataBucket: <bucket-name>
  awsSpotDataPrefix: ""
  awsSpotDataRegion: <region>

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Azure Spot Integration

Coming soon…

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GCP Spot Integration

Coming soon…