215-fiberplane.sh

# Source: https://gist.github.com/e9ff9ba54c4bd4b2d38349262a20935c

################################################################
# Postmortem Documents About Production Issues With Fiberplane #
# https://youtu.be/sLV6zCRlDEg                                 #
################################################################

# Additional Info:
# - Fiberplane: https://fiberplane.dev
# - Monitoring, Logging, And Alerting In Kubernetes: https://youtu.be/XR_yWlOEGiA
# - You MUST Instrument Your Code With OpenTelemetry!: https://youtu.be/oe5YYh9mhzw
# - Distributed Tracing With Jaeger And OpenTelemetry In Kubernetes: https://youtu.be/FK0uh-7nDSg
# - Kubernetes Notifications, Troubleshooting, And Automation With Robusta: https://youtu.be/2P76WVVua8w
# - The Best Performance And Load Testing Tool? k6 By Grafana Labs: https://youtu.be/5OgQuVAR14I

#########
# Setup #
#########

git clone https://github.com/vfarcic/fiberplane-demo

cd fiberplane-demo

# Create a Kubernetes cluster.
# If you choose to use a local cluster (e.g., Minikube,
#   Rancher Desktop, Docker Desktop, etc.), some commands
#   (especially those related to retrieving the IP) might differ.
# If you prefer to follow the demo as-is, please use a remote
#   cluster like GKE, EKS, AKS, etc.

helm upgrade --install ingress-nginx ingress-nginx \
    --repo https://kubernetes.github.io/ingress-nginx \
    --namespace ingress-nginx --create-namespace \
    --values nginx-values.yaml --wait

# If NOT EKS
export INGRESS_HOST=$(kubectl --namespace ingress-nginx \
    get service ingress-nginx-controller \
    --output jsonpath="{.status.loadBalancer.ingress[0].ip}")

# If EKS
export INGRESS_HOSTNAME=$(kubectl --namespace ingress-nginx \
    get service ingress-nginx-controller \
    --output jsonpath="{.status.loadBalancer.ingress[0].hostname}")

# If EKS
export INGRESS_HOST=$(dig +short $INGRESS_HOSTNAME)

echo $INGRESS_HOST

# Repeat the `export` command(s) if the output is empty.
# If the output contains more than one IP, wait for a while longer, and repeat the `export` commands.
# If the output continues having more than one IP, choose one of them and execute `export INGRESS_HOST=[...]` with `[...]` being the selected IP.

helm upgrade --install \
    prometheus prometheus \
    --repo https://prometheus-community.github.io/helm-charts \
    --namespace monitoring \
    --create-namespace \
    --set "server.ingress.hosts[0]=prometheus.$INGRESS_HOST.nip.io" \
    --values prometheus-values.yaml \
    --wait

# Install `yq` from https://github.com/mikefarah/yq if you do not have it already

yq --inplace \
    ".spec.rules[0].host = \"silly-demo.$INGRESS_HOST.nip.io\"" \
    k8s/ing.yaml

cat k6.js \
    | sed -e "s@http\.get.*@http\.get('http://silly-demo.$INGRESS_HOST.nip.io');@" \
    | tee k6.js

cat k6-db.js \
    | sed -e "s@http\.get.*@http\.get('http://silly-demo.$INGRESS_HOST.nip.io/video?id=something\&title=else');@" \
    | tee k6-db.js

kubectl create namespace production

kubectl --namespace production apply --filename k8s

# Watch https://youtu.be/5OgQuVAR14I if you're not familiar with k6

curl --proto '=https' --tlsv1.2 -sSf https://fp.dev/install.sh \
    | sh

fp login

fp proxies create dot

# Replace `[...]` with Token available in the output of the
#   previous command.
export PROXY_API_TOKEN=[...]

yq --inplace \
    ".spec.template.spec.containers[0].env[0].value = \"$PROXY_API_TOKEN\"" \
    fiberplane/deployment.yaml

kubectl create namespace fiberplane

kubectl --namespace fiberplane apply --filename fiberplane/

k6 run k6.js

k6 run k6-db.js

#######################
# Fiberplane Hands-On #
#######################

# Open https://studio.fiberplane.com in a browser

# Create a "New notebook"

# Check the datasources
# `/Prometheus chart`

# nginx_ingress_controller_requests

# nginx_ingress_controller_requests{status!="200"}

# sum(kube_pod_container_resource_limits{resource="cpu"}) - sum(kube_node_status_capacity{resource="cpu"})

# sum(kube_pod_container_resource_limits{resource="memory"}) - sum(kube_node_status_capacity{resource="memory"})

# min_over_time(sum by (namespace, pod) (kube_pod_status_phase{phase=~"Pending|Unknown|Failed"})[15m:1m]) > 0

###########
# Destroy #
###########

yq --inplace \
    ".spec.template.spec.containers[0].env[0].value = \"my-api-token\"" \
    fiberplane/deployment.yaml

# Destroy or reset the Kubernetes cluster