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#166: Added script that runs 42's image in a local Kubernetes cluster #167

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Merged
ericstoneking merged 2 commits into from
May 12, 2025
Merged

#166: Added script that runs 42's image in a local Kubernetes cluster #167

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b45bc6b
added script start 42 in a kubernetes cluster
haisamido May 9, 2025
9da8bf7
fixed pod name (?}
haisamido May 9, 2025
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67 changes: 67 additions & 0 deletions containers/kubernetes/kubernetes.sh
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Original file line number Diff line number Diff line change
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OU=myorg
ENVIRO=dev
CONTEXT=missions
REALM=${OU}-${ENVIRO}-${CONTEXT}

MISSION=m01
SPACECRAFT=sc01

# resource names, to be used with context, cluster, namespace, pods, and services
RESOURCE_NAME=${REALM}-${MISSION}

# application specifics
APP=42
APP_INTERNAL_PORT=80
APP_EXTERNAL_PORT=30080
IMAGE_URI=ghcr.io/ericstoneking/42:latest

# contexts/clusters
K8S_CONTEXT=${RESOURCE_NAME}
K8S_CLUSTER=${K8S_CONTEXT}

#
KIND_EXPERIMENTAL_PROVIDER=podman kind delete cluster --name ${K8S_CLUSTER} || true
KIND_EXPERIMENTAL_PROVIDER=podman kind create cluster --name ${K8S_CLUSTER}

# add the prefix since podman adds kind- to contexts/clusters
K8S_CONTEXT_PREFIX=kind-
K8S_CONTEXT=${K8S_CONTEXT_PREFIX}${K8S_CONTEXT}

# set and use context
kubectl config set-context ${K8S_CONTEXT}
kubectl config use-context ${K8S_CONTEXT}

# namespace
K8S_NAMESPACE=${RESOURCE_NAME}-${SPACECRAFT}
K8S_POD=${RESOURCE_NAME}-${SPACECRAFT}-${APP}

kubectl delete namespace ${K8S_NAMESPACE} --context ${K8S_CONTEXT} || true
kubectl create namespace ${K8S_NAMESPACE} --context ${K8S_CONTEXT}

# deployment
K8S_DEPLOYMENT=${K8S_POD}

kubectl delete deployment ${K8S_DEPLOYMENT} --context ${K8S_CONTEXT} --namespace ${K8S_NAMESPACE} || true
kubectl create deployment ${K8S_DEPLOYMENT} --context ${K8S_CONTEXT} --namespace ${K8S_NAMESPACE} \
--port=${APP_INTERNAL_PORT} \
--image=${IMAGE_URI} \
--replicas=1

echo "Sleeping for 120 seconds to ensure that pod(s) are up and running"
sleep 120

kubectl scale deployment ${K8S_DEPLOYMENT} --context ${K8S_CONTEXT} --namespace ${K8S_NAMESPACE} --replicas=1

# service
K8S_SERVICE=${K8S_DEPLOYMENT}-service

kubectl delete service ${K8S_SERVICE} --context ${K8S_CONTEXT} --namespace ${K8S_NAMESPACE} || true
kubectl expose deployment ${K8S_DEPLOYMENT} --context ${K8S_CONTEXT} --namespace ${K8S_NAMESPACE} \
--name=${K8S_SERVICE} \
--port=${APP_INTERNAL_PORT} \
--target-port=${APP_INTERNAL_PORT} \
--protocol=TCP

# port-forwarding
kubectl port-forward service/${K8S_SERVICE} --context ${K8S_CONTEXT} --namespace ${K8S_NAMESPACE} \
${APP_EXTERNAL_PORT}:${APP_INTERNAL_PORT} &
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