rssnyder

to get a connection into a k8s cluster without deploying a delegate, we need to create a service account with the correct permissions and generate a token for it.

first, we create the service account:

apiVersion: v1
kind: ServiceAccount
metadata:
  name: harness
  namespace: default

rssnyder

[Unit]
Description=stress

[Service]
SyslogIdentifier=stress
StandardOutput=journal
StandardError=journal
ExecReload=/bin/kill -HUP $MAINPID
ExecStart=/usr/bin/stress -c 1
Restart=always

rssnyder

{
    "Version": "2012-10-17",
    "Statement":
    [
        {
            "Sid": "VisualEditor0",
            "Effect": "Allow",
            "Action":
            [
                "acm:ListCertificates",

rssnyder

from os import getenv

from requests import get

headers = {
    "Harness-Account": getenv("HARNESS_ACCOUNT_ID"),
    "x-api-key": getenv("HARNESS_PLATFORM_API_KEY"),
}

# get all orgs

rssnyder

terraform {
  required_providers {
    azurerm = {
      source  = "hashicorp/azurerm"
      version = "=3.0.0"
    }
  }
}

provider "azurerm" {

rssnyder

problem statement: scale a kubernetes delegate not based on cpu or memory, but on the number of tasks assigned to the delegates

what we need:

• a delegate deployed to a cluster
• a prometheus server running
  • delegate metrics should be getting scraped and sent to promethes
• the prometheus adapter should be installed in the cluster
  • this allows us to use prometheus metrics as scaling metrics

1. validate that our prometheus metrics can be used by the cluster for scaling:

rssnyder

terraform {
  required_providers {
    aws = {
      source  = "hashicorp/aws"
      version = "~> 5.0"
    }
    harness = {
      source = "harness/harness"
    }
  }

rssnyder

terraform {
  required_providers {
    harness = {
      source = "harness/harness"
    }
  }
}

provider "harness" {}

rssnyder

from os import getenv

from requests import post


HEADERS = {"x-api-key": getenv("HARNESS_PLATFORM_API_KEY")}

PARAMS = {
    "routingId": getenv("HARNESS_ACCOUNT_ID"),
    "accountIdentifier": getenv("HARNESS_ACCOUNT_ID"),

rssnyder

get all harness projects using python

setup

set the following in your environment

HARNESS_ACCOUNT_ID: your harness account id

HARNESS_PLATFORM_API_KEY: a harness token with orgs and projects read