Alex Collins
6 years ago
committed by
GitHub
GitHub
15 changed files with 5 additions and 348 deletions
@ -1,4 +0,0 @@ |
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/lib |
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/.ksonnet/registries |
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/app.override.yaml |
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/.ks_environment |
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@ -1,15 +0,0 @@ |
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apiVersion: 0.3.0 |
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environments: |
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default: |
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destination: |
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namespace: blue-green-deploy |
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server: https://kubernetes.default.svc |
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k8sVersion: v1.10.0 |
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path: default |
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kind: ksonnet.io/app |
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name: blue-green-deploy |
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registries: |
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incubator: |
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protocol: github |
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uri: github.com/ksonnet/parts/tree/master/incubator |
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version: 0.0.1 |
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@ -1,71 +0,0 @@ |
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#!bin/bash |
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|
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DEPLOYMENT_NAME=$(echo "${DEPLOY_MANIFEST}" | jq -r '.metadata.name') |
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SERVICE_NAME=$(echo "${SERVICE_MANIFEST}" | jq -r '.metadata.name') |
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|
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# 1. Check if the deployment exists. If it doesn't exist, this is the initial deployment and we |
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# can simply deploy without blue-green. Add the app label using jq |
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out=$(kubectl get --export -o json deployment.apps/${DEPLOYMENT_NAME} 2>&1) |
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if [ $? -ne 0 ]; then |
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if [[ "${out}" =~ "NotFound" ]] ; then |
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echo "Initial deployment" |
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echo ${DEPLOY_MANIFEST} | \ |
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jq ".metadata.labels += {\"app.kubernetes.io/instance\": \"${APPNAME}\"}" | \ |
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kubectl apply -o yaml -f - || exit 1 |
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echo ${SERVICE_MANIFEST} | \ |
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jq ".metadata.labels += {\"app.kubernetes.io/instance\": \"${APPNAME}\"}" | \ |
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kubectl apply -o yaml -f - || exit 1 |
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exit 0 |
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fi |
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echo "Failed to get deployment: ${out}" |
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exit 1 |
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fi |
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ORIGINAL_DEPLOY_MANIFEST=$out |
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|
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# 2. Clone the original, running deployment to a temporary deployment, with tweaks to its name and |
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# selectors. The jq command carries over all labels and selectors and appends the `-temp` suffix. |
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TMP_DEPLOYMENT_NAME="${DEPLOYMENT_NAME}-temp" |
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echo ${ORIGINAL_DEPLOY_MANIFEST} | jq -r '.metadata.name+="-temp" | |
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.spec.template.metadata.labels += (.spec.template.metadata.labels | to_entries | map(.value+="-temp") | from_entries) | |
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.spec.selector.matchLabels += (.spec.selector.matchLabels | to_entries | map(.value+="-temp") | from_entries)' | |
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kubectl apply -f - |
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|
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# 3. Wait for cloned deployment to become ready. |
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sleep 2 |
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echo "Waiting for successful rollout of new (temporary) deployment" |
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kubectl rollout status --watch=true deployments.apps/${TMP_DEPLOYMENT_NAME} || exit 1 |
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echo "Rollout of temporary deployment successful" |
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|
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# 4. Patch the service object such that all traffic is redirected to the cloned, temporary |
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# deployment. After this step, the original deployment will no longer be receiving traffic. |
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kubectl get service ${SERVICE_NAME} --export -o json | \ |
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jq '.spec.selector = (.spec.selector | with_entries(.value+="-temp"))' | |
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kubectl apply -f - || exit 1 |
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sleep 5 # Sleep slightly to allow iptables to get propagated to all nodes in the cluster |
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|
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# 5. Update the original deployment (now receiving no traffic) with the new manifest |
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echo "Updating original deployment" |
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echo ${DEPLOY_MANIFEST} | \ |
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jq ".metadata.labels += {\"app.kubernetes.io/instance\": \"${APPNAME}\"}" | \ |
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kubectl apply -f - || exit 1 |
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|
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# 6. Wait for the new deployment to become complete |
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sleep 2 |
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echo "Waiting for successful rollout of new deployment" |
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kubectl rollout status --watch=true deployments.apps/${DEPLOYMENT_NAME} || exit 1 |
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echo "Rollout of new deployment successful" |
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|
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# dummy wait step for demo purposes |
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echo "sleeping for 30 seconds" |
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sleep 30 |
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|
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# 7. Apply the new service object. Traffic will be redirected to the new version of the deployment |
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echo "Updating original service object" |
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echo ${SERVICE_MANIFEST} | \ |
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jq ".metadata.labels += {\"app.kubernetes.io/instance\": \"${APPNAME}\"}" | \ |
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kubectl apply -f - || exit 1 |
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|
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sleep 10 |
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# 8. Remove the cloned deployment, which is no longer receiving any traffic |
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echo "Deleting ephemeral deployment" |
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kubectl delete deployments/${TMP_DEPLOYMENT_NAME} --ignore-not-found=true || exit 1 |
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@ -1,65 +0,0 @@ |
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local env = std.extVar("__ksonnet/environments"); |
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local params = std.extVar("__ksonnet/params").components["bg-guestbook"]; |
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[ |
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{ |
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"apiVersion": "v1", |
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"kind": "Service", |
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"metadata": { |
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"name": params.name, |
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"annotations": { |
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"argocd.argoproj.io/hook": "Skip", |
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}, |
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}, |
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"spec": { |
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"ports": [ |
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{ |
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"port": params.servicePort, |
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"targetPort": params.containerPort |
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} |
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], |
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"selector": { |
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"app": params.name |
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}, |
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"type": params.type |
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} |
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}, |
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{ |
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"apiVersion": "apps/v1beta2", |
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"kind": "Deployment", |
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"metadata": { |
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"name": params.name, |
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"annotations": { |
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"argocd.argoproj.io/hook": "Skip", |
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}, |
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}, |
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"spec": { |
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"replicas": params.replicas, |
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"revisionHistoryLimit": 3, |
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"selector": { |
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"matchLabels": { |
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"app": params.name |
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}, |
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}, |
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"template": { |
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"metadata": { |
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"labels": { |
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"app": params.name |
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} |
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}, |
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"spec": { |
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"containers": [ |
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{ |
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"image": params.image, |
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"name": params.name, |
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"ports": [ |
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{ |
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"containerPort": params.containerPort |
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} |
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] |
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} |
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] |
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} |
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} |
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} |
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} |
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] |
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@ -1,131 +0,0 @@ |
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local bgGuestbook = std.extVar("__ksonnet/components")["bg-guestbook"]; |
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local bgGuestbookSvc = bgGuestbook[0]; |
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local bgGuestbookDeploy = bgGuestbook[1]; |
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|
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[ |
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{ |
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"apiVersion": "v1", |
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"kind": "Pod", |
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"metadata": { |
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"generateName": "blue-green-", |
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"annotations": { |
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"argocd.argoproj.io/hook": "Sync", |
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"deploy-manifest": std.manifestJson(bgGuestbookDeploy), |
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"svc-manifest": std.manifestJson(bgGuestbookSvc), |
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}, |
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}, |
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"spec": { |
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"serviceAccountName": "blue-green-sa", |
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"restartPolicy": "Never", |
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"containers": [ |
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{ |
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"name": "blue-green", |
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"image": "argoproj/argoexec:latest", |
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"command": ["bash", "-c"], |
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"args": [" |
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curl -L -o /usr/local/bin/kubectl -LO https://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/linux/amd64/kubectl && |
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chmod +x /usr/local/bin/kubectl && |
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curl -sSL -o /usr/local/bin/blue-green.sh https://raw.githubusercontent.com/argoproj/argocd-example-apps/master/blue-green-deploy/blue-green.sh && |
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chmod +x /usr/local/bin/blue-green.sh && |
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blue-green.sh |
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"], |
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"env": [ |
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{ |
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"name": "DEPLOY_MANIFEST", |
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"valueFrom": { |
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"fieldRef": { |
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"fieldPath": "metadata.annotations['deploy-manifest']" |
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} |
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} |
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}, |
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{ |
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"name": "SERVICE_MANIFEST", |
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"valueFrom": { |
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"fieldRef": { |
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"fieldPath": "metadata.annotations['svc-manifest']" |
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} |
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} |
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}, |
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// NOTE: app.kubernetes.io/instance will get injected into the hook object |
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{ |
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"name": "APPNAME", |
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"valueFrom": { |
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"fieldRef": { |
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"fieldPath": "metadata.labels['app.kubernetes.io/instance']" |
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} |
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} |
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} |
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] |
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} |
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], |
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} |
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}, |
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// RBAC to allow the blue-green pod privileges to manipulate deployments and services |
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{ |
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"apiVersion": "v1", |
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"kind": "ServiceAccount", |
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"metadata": { |
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"name": "blue-green-sa" |
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} |
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}, |
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{ |
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"apiVersion": "rbac.authorization.k8s.io/v1", |
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"kind": "Role", |
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"metadata": { |
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"name": "blue-green-role" |
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}, |
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"rules": [ |
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{ |
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"apiGroups": [ |
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"apps", |
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"extensions" |
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], |
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"resources": [ |
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"deployments", |
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], |
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"verbs": [ |
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"list", |
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"get", |
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"create", |
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"update", |
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"patch", |
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"delete", |
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] |
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}, |
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{ |
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"apiGroups": [ |
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"" |
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], |
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"resources": [ |
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"services" |
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], |
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"verbs": [ |
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"list", |
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"get", |
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"create", |
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"update", |
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"patch", |
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"delete", |
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] |
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} |
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] |
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}, |
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{ |
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"apiVersion": "rbac.authorization.k8s.io/v1", |
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"kind": "RoleBinding", |
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"metadata": { |
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"name": "blue-green-rolebinding" |
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}, |
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"roleRef": { |
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"apiGroup": "rbac.authorization.k8s.io", |
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"kind": "Role", |
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"name": "blue-green-role" |
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}, |
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"subjects": [ |
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{ |
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"kind": "ServiceAccount", |
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"name": "blue-green-sa" |
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} |
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] |
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} |
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] |
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@ -1,19 +0,0 @@ |
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{ |
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global: { |
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// User-defined global parameters; accessible to all component and environments, Ex: |
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// replicas: 4, |
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}, |
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components: { |
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// Component-level parameters, defined initially from 'ks prototype use ...' |
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// Each object below should correspond to a component in the components/ directory |
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"bg-guestbook": { |
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containerPort: 80, |
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image: "gcr.io/heptio-images/ks-guestbook-demo:0.2", |
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name: "blue-green-guestbook", |
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replicas: 3, |
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servicePort: 80, |
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type: "LoadBalancer", |
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}, |
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"bg-pod": {}, |
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}, |
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} |
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@ -1,4 +0,0 @@ |
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local components = std.extVar("__ksonnet/components"); |
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components + { |
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// Insert user-specified overrides here. |
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} |
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@ -1,2 +0,0 @@ |
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{ |
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} |
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@ -1,9 +0,0 @@ |
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local base = import "base.libsonnet"; |
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// uncomment if you reference ksonnet-lib |
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// local k = import "k.libsonnet"; |
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// local deployment = k.apps.v1beta2.deployment; |
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|
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base + { |
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// Insert user-specified overrides here. For example if a component is named \"nginx-deployment\", you might have something like:\n") |
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// "nginx-deployment"+: deployment.mixin.metadata.withLabels({foo: "bar"}) |
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} |
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@ -1,17 +0,0 @@ |
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local params = std.extVar("__ksonnet/params"); |
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local globals = import "globals.libsonnet"; |
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local envParams = params + { |
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components +: { |
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// Insert component parameter overrides here. Ex: |
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// guestbook +: { |
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// name: "guestbook-dev", |
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// replicas: params.global.replicas, |
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// }, |
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}, |
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}; |
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|
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{ |
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components: { |
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[x]: envParams.components[x] + globals, for x in std.objectFields(envParams.components) |
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}, |
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} |
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@ -1,5 +1,7 @@ |
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namePrefix: kustomize- |
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|
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resources: |
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- ../guestbook/guestbook-ui-deployment.yaml |
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- ../guestbook/guestbook-ui-svc.yaml |
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- guestbook-ui-deployment.yaml |
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- guestbook-ui-svc.yaml |
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apiVersion: kustomize.config.k8s.io/v1beta1 |
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kind: Kustomization |
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|
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@ -1,7 +0,0 @@ |
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namePrefix: kustomize- |
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|
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resources: |
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- guestbook-ui-deployment.yaml |
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- guestbook-ui-svc.yaml |
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apiVersion: kustomize.config.k8s.io/v1beta1 |
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kind: Kustomization |
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