Keptn on k3s with demo projects for Dynatrace

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Running on Keptn on k3s with demo projects

Before you start - make sure to pick the right branch for your Keptn Version!

Authors	Tutorial Version	Keptn Version	Comment
@thschue	release-0.6.2	0.6.2	Initial Release
@grabnerandi	release-0.7.3	0.7.3	Adding Dynatrace Use Cases
@grabnerandi	release-0.8.0	0.8.0	Updates to Keptn 0.8
@grabnerandi	release-0.9.0	0.9.1	Updates to Keptn 0.9.x

This repo automates the installation of Keptn's Control Plane, Delivery or Execution. For that it will automatically install a k3s. This is your fastest way to explore the following use cases:

• SLI/SLO-based Quality Gates
• Performance as a Self-Service
• Multi-Stage Delivery
• Automated Operation (aka Auto-Remediation).

Depending on which options you choose the script will install

• JMeter Service as a testing service
• Istio as Service Mesh for Blue/Green
• Argo Rollouts for Canary Deployments
• Generic Executor to execute remediation scripts
• Monaco Service to automate Dynatrace Monitoring Configuration

This tutorial was heavily driven to use cases that integrate with Dynatrace which is why Dynatrace is prominently featured as a monitoring solution. You can however also run the script using Prometheus to provide SLIs for your quality gates!

After the installation is complete you are free to install any additional Keptn Services such as Notification, Jenkins, Grafana, Jira ... service. Find those services in the Keptn-Contrib organization or Keptn-Sandbox

Use cases, pre-requisites and supported stacks

• If you want to watch our Keptn on k3s webinar click here!

• If you want to use Keptn with Dynatrace check out Keptn for Dynatrace in 5 Minutes or watch the specific tutorials

  • Keptn Quality Gates for Dynatrace in 5 minutes
  • Automated Performance with Keptn, JMeter and Dynatrace in 5 minutes
  • Keptn Auto Remediation for Dynatrace in 5 minutes

Use Case

• You want to try out Keptn
• You don't want to deal with installing Kubernetes
• You have access to a Linux host

But:

• You don't want to use this in production (currently)
• You don't plan to upgrade this installation (currently, but maybe reinstall)

Prerequisites:

• A machine which is able to execute bash scripts and that allows incoming HTTP (80) & HTTPS (443) traffic. I have tested all this on EC2 AWS Linux machines

Required tools

To install you need the following tools on your machine: git, curl, tree, jq, tree, yq! Here instructions on how to download on an EC2 Linux

sudo yum update -y
sudo yum install git -y
sudo yum install curl -y
sudo yum install jq -y
sudo yum install tree -y
sudo wget https://github.com/mikefarah/yq/releases/download/3.4.1/yq_linux_amd64 -O /usr/bin/yq && sudo chmod +x /usr/bin/yq

git clone https://github.com/keptn-sandbox/keptn-on-k3s
cd keptn-on-k3s
git checkout release-0.9.0

Currently tested on:

• Amazon Linux 2

ATTENTION: if you try this on an EC2, GCP, ... instance please make sure to allow inbound traffic for HTTP & HTTPS!

• Basic install (for quality gates only) works on a machine with 2 (v)CPU and 8GB of memory, e.g: t3.large
• Advanced install (with delivery & testing) needs a machine with at least 8 (v)CPU and 32GB of memory, e.g: t3.2xlarge

Parameters

The script allows a couple of parameters

Parameter Name	Values	Comment
--type	all (default), k3s, keptn, demo, gitus	Will either install everything (all), just k3s, just keptn (assuming that kubectl is pointing to a k8s cluster), demo (just the demo components), gitus (will create Git Upstreams for each Keptn Project)
--controlplane		This is default, it will just install Keptn Control Plane on this k3s allowing Quality Gates & Auto-Remediation
--deliveryplane		This option will install Keptn Delivery Plane - that is Control Plane + Helm (for Deployment) + JMeter (for Testing). This will also install Istio
--executionplane		This option only installs Keptn's Execution Plane + Helm (for Deployment) + JMeter (for Testing) + Istio. This also requires you to set some Env-Variables pointing to the Keptn Control Plane
--with-prometheus		Will enable Prometheus Support and install Prometheus in the prometheus namespace.
--with-dynatrace		Will enable Dynatrace Support. Requires DT_API_TOKEN and DT_TENANT env variables to be set
--with-jmeter		Will make sure to install JMeter Service in case not already selected by another option, e.g: deliveryplane or execution plane
--with-slackbot		Will install the Keptn slackbot. Requires SLACKBOT_TOKEN env variable to be set
--use-xip		Will use a xip.io domain, e.g: your.ip.xip.io
--use-nip		Will use a nip.io domain which is sometimes more reliable than using xip.io. Will also be used when LE_STAGE=staging and no FQDN is specified
--provider	aws gcp digitalocean EMPTY	handles IP gathering based on provider or uses hostname in case its empty
--ip	YOURIP	Allows you to pass your own IP of your host
--letsencrypt		Will create a Letsencrypt certificate
--fqdn	YOURFQDN	Allows you to pass your own hostname, allows you to create production LetsEncrypt Certificates, You need to create your own DNS entry
--with-demo	dynatrace prometheus	Will install demo projects for Dynatrace or Prometheus
--with-gitea		Will install Gitea and upstream Git repos for every Keptn project
--disable-bridge-auth		Will disable the password check when accessing Keptn Bridge (not recommended for anything else than demo purposes)

TLS Certificates

keptn-on-k3s comes with cert-manager. By default, a self-signed certificate is generated. By adding --letsencrypt as a parameter, and a CERT_EMAIL is exported, you will create a LetsEncrypt-Staging certificate. By additionally exporting LE_STAGE=production, a LetsEncypt Production certificate will be issued (will not work with xip.io and nip.io).

Installing Keptn for Dynatrace in 5 Minutes

For all details please check out Keptn for Dynatrace in 5 Minutes

Here are three common installation scenarios:

Keptn with Dynatrace for all Use Cases and Samples

The installation scripts for Dynatrace needs a couple of env-variables:

$ export DT_TENANT=abc12345.live.dynatrace.com        # Host name of your Dynatrace Tenant
$ export DT_API_TOKEN=YOURTOKEN                       # Dynatrace API token to let Keptn pull SLIs from Dynatrace
$ export DT_PAAS_TOKEN=YOURPAASTOKEN                  # Dynatrace PAAS token as script will install OneAgent
$ export OWNER_EMAIL=yourdynatraceuser@yourmail.com   # Your username in Dynatrace
$ export LE_STAGE=staging                             # This is needed for certificate creation

When you have an EC2 machine you can run the following script which will install Keptn using the EC2 machines public IP to expose the keptn services via e.g: http://keptn.YOUR.IP.nip.io

./install-keptn-on-k3s.sh --deliveryplane --provider aws --with-dynatrace --with-demo dynatrace --letsencrypt --with-gitea

If you create your own DNS Entry for your IP, e.g: Using Route53 to map to your public IP of your EC2 instance then you can run this

./install-keptn-on-k3s.sh --deliveryplane --provider aws --with-dynatrace --with-demo dynatrace --letsencrypt --with-gitea --fqdn yourkeptndomain.abc

If you just want quality gates then do this

./install-keptn-on-k3s.sh --controlplane --provider aws --with-dynatrace --with-demo dynatrace --letsencrypt --with-gitea

Other installation examples

Here are a couple of installation examples

Installing on any Linux with Prometheus Support:

This option will auto-detect your IP address by using hostname -I

# For the brave, with Prometheus-Service and SLI Provider
./install-keptn-on-k3s.sh --with-prometheus

Installing on GCP:

This option passes the --provider gcp* option. In this case the script queries the external IP address of your GCP instance.

./install-keptn-on-k3s.sh --provider gcp

Installation using a custom IP:

This option allows you to specify which IP address to be used to expose Keptn services (API, Bridge ...) on this machine!

./install-keptn-on-k3s.sh --ip <IP>

Cleanup: Uninstall k3s

k3s-uninstall.sh

Also make sure to remove any other potentially created files as part of the demo installations!