04-03-knative.sh

# Source: https://gist.github.com/dc4ba562328c1d088047884026371f1f

###########################################################
# Using Knative To Deploy And Manage Serverless Workloads #
###########################################################

######################
# Installing Knative #
######################

# GKE (gke-simple.sh): https://gist.github.com/ebe4ad31d756b009b2e6544218c712e4)
# EKS (eks-simple.sh): https://gist.github.com/8ef7f6cb24001e240432cd6a82a515fd)
# AKS (aks-simple.sh): https://gist.github.com/f3e6575dcefcee039bb6cef6509f3fdc)

kubectl apply \
    --filename https://github.com/knative/serving/releases/download/knative-v1.8.1/serving-crds.yaml

kubectl apply \
    --filename https://github.com/knative/serving/releases/download/knative-v1.8.1/serving-core.yaml

kubectl --namespace knative-serving get pods

git clone https://github.com/vfarcic/devops-catalog-code.git

cd devops-catalog-code

git pull

cd knative/istio

kubectl apply \
    --filename https://github.com/knative/net-istio/releases/download/knative-v1.8.1/istio.yaml \
    --selector knative.dev/crd-install=true

kubectl apply \
    --filename https://github.com/knative/net-istio/releases/download/knative-v1.8.1/istio.yaml

kubectl apply \
    --filename https://github.com/knative/net-istio/releases/download/knative-v1.8.1/net-istio.yaml

kubectl --namespace istio-system get pods

kubectl label namespace knative-serving istio-injection=enabled

cat peer-auth.yaml

kubectl apply --filename peer-auth.yaml

# Only if GKE or AKS
export INGRESS_IP=$(kubectl --namespace istio-system \
    get service istio-ingressgateway \
    --output jsonpath='{.status.loadBalancer.ingress[0].ip}')

# Only if GKE or AKS
export INGRESS_HOST=$INGRESS_IP.nip.io

# Only if EKS
export INGRESS_HOST=$(kubectl --namespace istio-system \
    get service istio-ingressgateway \
    --output jsonpath='{.status.loadBalancer.ingress[0].hostname}')

kubectl --namespace knative-serving get configmap config-domain \
    --output yaml

echo "apiVersion: v1
kind: ConfigMap
metadata:
  name: config-domain
  namespace: knative-serving
data:
  $INGRESS_HOST: \"\" 
" | kubectl apply --filename -

kubectl --namespace knative-serving get pods

############################
# Painting The Big Picture #
############################

kubectl create namespace production

kubectl label namespace production istio-injection=enabled

kn service create devops-toolkit --namespace production \
    --image vfarcic/devops-toolkit-series --port 80

kubectl --namespace production get routes

# Only if EKS
curl -H "Host: devops-toolkit.production.example.com" \
    http://$INGRESS_HOST

# Only if GKE or AKS
open http://devops-toolkit.production.$INGRESS_HOST

kubectl --namespace production \
    get pods

# Only if EKS
curl -H "Host: devops-toolkit.production.example.com" \
    http://$INGRESS_HOST

# Only if GKE or AKS
open http://devops-toolkit.production.$INGRESS_HOST

kn service delete devops-toolkit \
    --namespace production

#########################################
# Defining Knative Applications As Code #
#########################################

cat devops-toolkit.yaml

kubectl --namespace production apply \
    --filename devops-toolkit.yaml

# Only if EKS
curl -H "Host: devops-toolkit.production.example.com" \
    http://$INGRESS_HOST

# Only if GKE or AKS
open http://devops-toolkit.production.$INGRESS_HOST

kubectl --namespace production \
    get kservice

kubectl --namespace production \
    get configuration

kubectl --namespace production \
    get revisions

kubectl --namespace production \
    get deployments

kubectl --namespace production \
    get services,virtualservices

kubectl --namespace production \
    get podautoscalers

kubectl --namespace production \
    get routes

# Only if EKS
kubectl run siege \
    --image yokogawa/siege \
    -it --rm \
    -- --concurrent 500 --time 60S \
    --header "Host: devops-toolkit.production.example.com" \
    "http://$INGRESS_HOST" \
    && kubectl --namespace production \
    get pods

# Only if GKE or AKS
kubectl run siege \
    --image yokogawa/siege \
    -it --rm \
    -- --concurrent 500 --time 60S \
    "http://devops-toolkit.production.$INGRESS_HOST" \
    && kubectl --namespace production \
    get pods

kubectl --namespace production \
    get pods

############################
# Destroying The Resources #
############################

kubectl --namespace production delete \
    --filename devops-toolkit.yaml

kubectl delete namespace production

cd ../../../

# Only if EKS
kubectl --namespace istio-system \
    delete service istio-ingressgateway

I'm not sure. I never used that image or whatever is inside it. I just saw in the logs of the container that the process failed to start because of that option. My best guess, without looking at the code behind that image, is that you need to change the init command or, maybe, you can pass it as an env var.