demo-mesh-arena

Slides

This demo was presented at the Devops D-Day 2018 in the Velodrome, Marseilles' famous stadium. Here are the slides, in French. Or a similar English version.

Step-by-step

For a step-by-step walk-through, read this (outdated - you might run through the "scenario" steps instead, read make man).

Pre-requisite

Kubernetes cluster running
Istio installed (much better with Kiali!)

Quick start

This quick start doesn't require you to clone the repo, but offers less interactivity.

If not already done, enable istio injection:

kubectl label namespace default istio-injection=enabled

Note: though not mandatory, it's the main purpose of this demo to use Istio networking rules. The demo will still run without Istio.

Run one of the commands below:

# With app metrics enabled:
kubectl apply -f <(curl -L https://raw.githubusercontent.com/jotak/demo-mesh-arena/zizou/quickstart-metrics.yml) -n default

# With app traces enabled:
kubectl apply -f <(curl -L https://raw.githubusercontent.com/jotak/demo-mesh-arena/zizou/quickstart-tracing.yml) -n default

# With both enabled:
kubectl apply -f <(curl -L https://raw.githubusercontent.com/jotak/demo-mesh-arena/zizou/quickstart-both.yml) -n default

# With none enabled:
kubectl apply -f <(curl -L https://raw.githubusercontent.com/jotak/demo-mesh-arena/zizou/quickstart-naked.yml) -n default

# Interactive mode:
kubectl apply -f <(curl -L https://raw.githubusercontent.com/jotak/demo-mesh-arena/zizou/quickstart-interactive.yml) -n default

In the interactive mode, players won't shoot by themselves, they need a human interaction. To shoot, click on a player, enter your name, then click the "shoot" button.

Expose UI

kubectl -n default port-forward svc/ui 8080:8080

Open http://localhost:8080.

Quick start with Kafka

By default, the mesh-arena services use simple HTTP endpoint to communicate. There's a Kafka switch that turns on using Kafka messaging for some communications. Run the following instructions to turn it on:

# Create a namespace for Kafka
kubectl create namespace kafka

# Install Kafka (Strimzi-powered)
wget -O - -o /dev/null  https://github.com/strimzi/strimzi-kafka-operator/releases/download/0.30.0/strimzi-cluster-operator-0.30.0.yaml | sed -e 's/namespace: myproject/namespace: kafka/g' | kubectl apply -n kafka -f -
kubectl apply -f <(curl -L https://raw.githubusercontent.com/jotak/demo-mesh-arena/zizou/k8s/strimzi.yml) -n kafka

# Wait a little bit that everything is ready
kubectl wait --timeout=300s --for=condition=ready kafka messaging -n kafka

# Deploy mesh-arena services with Kafka turned on
kubectl apply -f <(curl -L https://raw.githubusercontent.com/jotak/demo-mesh-arena/zizou/quickstart-kafka.yml) -n default

This is more or less equivalent to this make command: make kafka-se deploy-kt

Advanced

Clone this repo
Read the manual!

make man

It covers a bunch of make targets, deployment options, Istio scenario, with or without Kafka, etc.

LiorHaim/demo-mesh-arena