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Merge pull request #311 native + nonroot images with entrypoints
Extract entrypoint command from bin scripts, try native-image zookeeper
2 parents 8148c95 + cee5278 commit e201ea3

38 files changed

+355
-61
lines changed

‎README.md

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@@ -57,7 +57,8 @@ Then pick and chose from patches our [example variants](https://github.com/Yolea
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| tag | k8s ≥ | highlights |
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| ------ | ----- | ----------- |
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| TBD | 1.13+ | Kafka [2.4.0](https://github.com/Yolean/kubernetes-kafka/pull/297) + [standard storage class](https://github.com/Yolean/kubernetes-kafka/pull/294) |
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| v7.0.0 | 1.15+ | [Breaking](https://github.com/Yolean/kubernetes-kafka/pull/311#issuecomment-657181714) with [nonroot](./nonroot/) and [native](./native/) bases |
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| v6.0.x | 1.13+ | Kafka [2.4.0](https://github.com/Yolean/kubernetes-kafka/pull/297) + [standard storage class](https://github.com/Yolean/kubernetes-kafka/pull/294) |
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| v6.0.0 | 1.11+ | Kafka 2.2.0 + `apply -k` (kubectl 1.14+) + [#270](https://github.com/Yolean/kubernetes-kafka/pull/270) |
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| v5.1.0 | 1.11+ | Kafka 2.1.1 |
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| v5.0.3 | 1.11+ | Zookeeper fix [#227](https://github.com/Yolean/kubernetes-kafka/pull/227) + [maxClientCnxns=1](https://github.com/Yolean/kubernetes-kafka/pull/230#issuecomment-445953857) |

‎cruise-control/topic-create.yml

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spec:
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containers:
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- name: topic-create
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image: solsson/kafka:native-cli@sha256:7a4cc4ef875aea50b8d4dbb525cbac0ef3a5c6e611fcafc2c415ca432ebe5601
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image: solsson/kafka:native-cli@sha256:fbf29c59182fb87921c5199783d2d5796856ecbfe34a9c03eca658b3cf50f3c4
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command:
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- ./bin/kafka-topics.sh
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- --zookeeper

‎events-kube/topic-create.yaml

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spec:
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containers:
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- name: topic-create
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image: solsson/kafka:native-cli@sha256:7a4cc4ef875aea50b8d4dbb525cbac0ef3a5c6e611fcafc2c415ca432ebe5601
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image: solsson/kafka:native-cli@sha256:fbf29c59182fb87921c5199783d2d5796856ecbfe34a9c03eca658b3cf50f3c4
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command:
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- ./bin/kafka-topics.sh
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- --zookeeper

‎kafka/10broker-config.yml

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}
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printf '%s\n' "${SEDS[@]}" | sed -f - /etc/kafka-configmap/server.properties > /etc/kafka/server.properties.tmp
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[ $? -eq 0 ] && mv /etc/kafka/server.properties.tmp /etc/kafka/server.properties
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ln -s /etc/kafka/server.properties /etc/kafka/server.properties.$POD_NAME
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server.properties: |-
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############################# Log Basics #############################
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zookeeper.connect=zookeeper:2181
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# Timeout in ms for connecting to zookeeper
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#zookeeper.connection.timeout.ms=6000
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#zookeeper.connection.timeout.ms=18000
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############################# Group Coordinator Settings #############################

‎kafka/20dns.yml

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apiVersion: v1
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kind: Service
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metadata:
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name: broker
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name: kafka
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namespace: kafka
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annotations:
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service.alpha.kubernetes.io/tolerate-unready-endpoints: "true"
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spec:
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publishNotReadyAddresses: true
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ports:
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- port: 9092
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# [podname].broker.kafka.svc.cluster.local

‎kafka/50kafka.yml

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selector:
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matchLabels:
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app: kafka
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serviceName: "broker"
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serviceName: "kafka"
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replicas: 3
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updateStrategy:
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type: RollingUpdate
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- name: broker
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image: solsson/kafka:2.4.1@sha256:79761e15919b4fe9857ec00313c9df799918ad0340b684c0163ab7035907bb5a
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env:
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- name: POD_NAME
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valueFrom:
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fieldRef:
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fieldPath: metadata.name
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- name: POD_NAMESPACE
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valueFrom:
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fieldRef:
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fieldPath: metadata.namespace
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- name: CLASSPATH
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value: /opt/kafka/libs/extensions/*
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- name: KAFKA_LOG4J_OPTS
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containerPort: 5555
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command:
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- ./bin/kafka-server-start.sh
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- /etc/kafka/server.properties
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- /etc/kafka/server.properties.$(POD_NAME)
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lifecycle:
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preStop:
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exec:

‎kafka/test/kafkacat.yml

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spec:
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containers:
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- name: topic-create
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image: solsson/kafka:native-cli@sha256:7a4cc4ef875aea50b8d4dbb525cbac0ef3a5c6e611fcafc2c415ca432ebe5601
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image: solsson/kafka:native-cli@sha256:fbf29c59182fb87921c5199783d2d5796856ecbfe34a9c03eca658b3cf50f3c4
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command:
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- ./bin/kafka-topics.sh
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- --zookeeper

‎kafka/test/produce-consume.yml

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spec:
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containers:
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- name: topic-create
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image: solsson/kafka:native-cli@sha256:7a4cc4ef875aea50b8d4dbb525cbac0ef3a5c6e611fcafc2c415ca432ebe5601
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image: solsson/kafka:native-cli@sha256:fbf29c59182fb87921c5199783d2d5796856ecbfe34a9c03eca658b3cf50f3c4
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command:
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- ./bin/kafka-topics.sh
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- --zookeeper

‎native/distroless.yaml

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# The more specific removes are to make sure that there was a shell that we're removing
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- op: remove
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path: /spec/template/spec/containers/0/readinessProbe/exec
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- op: remove
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path: /spec/template/spec/containers/0/readinessProbe
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- op: remove
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path: /spec/template/spec/containers/0/lifecycle/preStop/exec
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- op: remove
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path: /spec/template/spec/containers/0/lifecycle/preStop

‎native/kustomization.yaml

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bases:
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- ../nonroot
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patchesStrategicMerge:
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- native-image-zookeeper.yaml
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patchesJson6902:
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- target:
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group: apps
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version: v1
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kind: StatefulSet
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name: pzoo
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path: distroless.yaml
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- target:
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group: apps
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version: v1
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kind: StatefulSet
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name: zoo
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path: distroless.yaml

‎native/native-image-zookeeper.yaml

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apiVersion: apps/v1
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kind: StatefulSet
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metadata:
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name: pzoo
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spec:
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template:
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spec:
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containers:
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- name: zookeeper
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image: solsson/kafka:native-zookeeper-server-start@sha256:ba3a0632240b8906a3b5bb6441e98ad9d9de73cb716b156ca68f1b435c819e8b
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resources:
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requests:
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cpu: 10m
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memory: 25Mi
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---
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apiVersion: apps/v1
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kind: StatefulSet
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metadata:
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name: zoo
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spec:
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template:
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spec:
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containers:
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- name: zookeeper
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image: solsson/kafka:native-zookeeper-server-start@sha256:ba3a0632240b8906a3b5bb6441e98ad9d9de73cb716b156ca68f1b435c819e8b
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resources:
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requests:
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cpu: 10m
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memory: 25Mi

‎nonroot/entrypoint-from-image.yaml

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- op: remove
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path: /spec/template/spec/containers/0/command

‎nonroot/kustomization.yaml

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- ../rbac-namespace-default
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- ../kafka
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- ../zookeeper
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patchesStrategicMerge:
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- nonroot-image-kafka.yaml
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- nonroot-image-zookeeper.yaml
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patchesJson6902:
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- target:
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group: apps
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kind: StatefulSet
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name: zoo
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path: fsgroup-65534.yaml
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# https://github.com/kubernetes-sigs/kustomize/issues/915#issuecomment-477808963
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patchesStrategicMerge:
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- nonroot-image-kafka.yaml
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- nonroot-image-zookeeper.yaml
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- target:
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group: apps
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version: v1
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kind: StatefulSet
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name: kafka
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path: entrypoint-from-image.yaml
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- target:
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group: apps
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version: v1
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kind: StatefulSet
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name: pzoo
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path: entrypoint-from-image.yaml
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- target:
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group: apps
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version: v1
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kind: StatefulSet
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name: zoo
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path: entrypoint-from-image.yaml

‎nonroot/nonroot-image-kafka.yaml

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spec:
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template:
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spec:
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initContainers:
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- name: init-config
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image: solsson/kafka:initutils-nonroot@sha256:87f6bb39fd47a6f382018a2dc55a484d1b71eee48a58019c7e65a9bc53e8dca2
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containers:
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- name: broker
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image: solsson/kafka:2.4.1-nonroot@sha256:ddfdd23081c075b86132f3e5d8e15389c78c4334dbb22166d9ad1d57f362007f
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image: solsson/kafka:2.5.0-kafka-server-start@sha256:c6d43d1240c358d9ab8bb60de61a0b9578f04fd727ee4016f7706800998e5351
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args:
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- /etc/kafka/server.properties.$(POD_NAME)

‎nonroot/nonroot-image-zookeeper.yaml

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spec:
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template:
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spec:
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initContainers:
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- name: init-config
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image: solsson/kafka:initutils-nonroot@sha256:87f6bb39fd47a6f382018a2dc55a484d1b71eee48a58019c7e65a9bc53e8dca2
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containers:
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- name: zookeeper
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image: solsson/kafka:2.4.1-nonroot@sha256:ddfdd23081c075b86132f3e5d8e15389c78c4334dbb22166d9ad1d57f362007f
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image: solsson/kafka:zookeeper-server-start@sha256:c34a9928fcc5ac15b2243ee2994cf09f5a3608b6090de378f39f89ad12320276
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args:
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- /etc/kafka/zookeeper.properties.scale-$(REPLICAS).$(POD_NAME)
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apiVersion: apps/v1
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spec:
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template:
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spec:
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initContainers:
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- name: init-config
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image: solsson/kafka:initutils-nonroot@sha256:87f6bb39fd47a6f382018a2dc55a484d1b71eee48a58019c7e65a9bc53e8dca2
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containers:
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- name: zookeeper
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image: solsson/kafka:2.4.1-nonroot@sha256:ddfdd23081c075b86132f3e5d8e15389c78c4334dbb22166d9ad1d57f362007f
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image: solsson/kafka:zookeeper-server-start@sha256:c34a9928fcc5ac15b2243ee2994cf09f5a3608b6090de378f39f89ad12320276
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args:
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- /etc/kafka/zookeeper.properties.scale-$(REPLICAS).$(POD_NAME)

‎variants/dev-small/listener-localhost.json

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[
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{"op": "add", "path": "/spec/template/spec/containers/0/command/2", "value": "--override"},
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{"op": "add", "path": "/spec/template/spec/containers/0/command/3", "value": "advertised.listeners=PLAINTEXT://:9092,OUTSIDE://localhost:9094"}
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{"op": "add", "path": "/spec/template/spec/containers/0/args/1", "value": "--override"},
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{"op": "add", "path": "/spec/template/spec/containers/0/args/2", "value": "advertised.listeners=PLAINTEXT://:9092,OUTSIDE://localhost:9094"}
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]

‎variants/dev-small/num-partitions-1.json

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[
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{"op": "add", "path": "/spec/template/spec/containers/0/command/-", "value": "--override"},
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{"op": "add", "path": "/spec/template/spec/containers/0/command/-", "value": "num.partitions=1"}
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{"op": "add", "path": "/spec/template/spec/containers/0/args/-", "value": "--override"},
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{"op": "add", "path": "/spec/template/spec/containers/0/args/-", "value": "num.partitions=1"}
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]

‎variants/scale-1-ephemeral/kafka-scale1-overrides.json

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[
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{"op": "add", "path": "/spec/template/spec/containers/0/command/-", "value": "--override"},
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{"op": "add", "path": "/spec/template/spec/containers/0/command/-", "value": "default.replication.factor=1"},
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{"op": "add", "path": "/spec/template/spec/containers/0/command/-", "value": "--override"},
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{"op": "add", "path": "/spec/template/spec/containers/0/command/-", "value": "min.insync.replicas=1"},
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{"op": "add", "path": "/spec/template/spec/containers/0/command/-", "value": "--override"},
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{"op": "add", "path": "/spec/template/spec/containers/0/command/-", "value": "offsets.topic.replication.factor=1"},
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{"op": "add", "path": "/spec/template/spec/containers/0/command/-", "value": "--override"},
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{"op": "add", "path": "/spec/template/spec/containers/0/command/-", "value": "offsets.topic.num.partitions=1"}
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{"op": "add", "path": "/spec/template/spec/containers/0/args/-", "value": "--override"},
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{"op": "add", "path": "/spec/template/spec/containers/0/args/-", "value": "default.replication.factor=1"},
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{"op": "add", "path": "/spec/template/spec/containers/0/args/-", "value": "--override"},
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{"op": "add", "path": "/spec/template/spec/containers/0/args/-", "value": "min.insync.replicas=1"},
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{"op": "add", "path": "/spec/template/spec/containers/0/args/-", "value": "--override"},
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{"op": "add", "path": "/spec/template/spec/containers/0/args/-", "value": "offsets.topic.replication.factor=1"},
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{"op": "add", "path": "/spec/template/spec/containers/0/args/-", "value": "--override"},
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{"op": "add", "path": "/spec/template/spec/containers/0/args/-", "value": "offsets.topic.num.partitions=1"}
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]

‎variants/scale-1/kafka-scale1-overrides.json

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[
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{"op": "add", "path": "/spec/template/spec/containers/0/command/-", "value": "--override"},
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{"op": "add", "path": "/spec/template/spec/containers/0/command/-", "value": "default.replication.factor=1"},
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{"op": "add", "path": "/spec/template/spec/containers/0/command/-", "value": "--override"},
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{"op": "add", "path": "/spec/template/spec/containers/0/command/-", "value": "min.insync.replicas=1"},
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{"op": "add", "path": "/spec/template/spec/containers/0/command/-", "value": "--override"},
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{"op": "add", "path": "/spec/template/spec/containers/0/command/-", "value": "offsets.topic.replication.factor=1"},
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{"op": "add", "path": "/spec/template/spec/containers/0/command/-", "value": "--override"},
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{"op": "add", "path": "/spec/template/spec/containers/0/command/-", "value": "offsets.topic.num.partitions=1"}
2+
{"op": "add", "path": "/spec/template/spec/containers/0/args/-", "value": "--override"},
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{"op": "add", "path": "/spec/template/spec/containers/0/args/-", "value": "zookeeper.connect=zoo-0.zoo.$(POD_NAMESPACE).svc.cluster.local:2181" },
4+
{"op": "add", "path": "/spec/template/spec/containers/0/args/-", "value": "--override"},
5+
{"op": "add", "path": "/spec/template/spec/containers/0/args/-", "value": "default.replication.factor=1"},
6+
{"op": "add", "path": "/spec/template/spec/containers/0/args/-", "value": "--override"},
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{"op": "add", "path": "/spec/template/spec/containers/0/args/-", "value": "min.insync.replicas=1"},
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{"op": "add", "path": "/spec/template/spec/containers/0/args/-", "value": "--override"},
9+
{"op": "add", "path": "/spec/template/spec/containers/0/args/-", "value": "offsets.topic.replication.factor=1"},
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{"op": "add", "path": "/spec/template/spec/containers/0/args/-", "value": "--override"},
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{"op": "add", "path": "/spec/template/spec/containers/0/args/-", "value": "offsets.topic.num.partitions=1"}
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]

‎variants/scale-1/kustomization.yaml

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bases:
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- ../../nonroot
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- ../../native
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patchesStrategicMerge:
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- kafka.yaml
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- zookeeper.yaml

‎variants/scale-1/zookeeper.yaml

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env:
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- name: PZOO_REPLICAS
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value: '1'
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- name: ZOO_REPLICAS
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value: '0'
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- name: REPLICAS
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value: '1'
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containers:
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- name: zookeeper
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env:
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- name: REPLICAS
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value: '1'
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---
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apiVersion: apps/v1
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kind: StatefulSet
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# There's no validation on these numbers adding up to a coherent zk config, so watch out
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- name: PZOO_REPLICAS
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value: '1'
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- name: ZOO_REPLICAS
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value: '0'
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- name: REPLICAS
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value: '1'
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- name: ID_OFFSET
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value: '2'
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containers:
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- name: zookeeper
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env:
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- name: REPLICAS
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value: '1'

‎variants/scale-2/kafka-scale2-overrides.json

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[
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{"op": "add", "path": "/spec/template/spec/containers/0/command/-", "value": "--override"},
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{"op": "add", "path": "/spec/template/spec/containers/0/command/-", "value": "default.replication.factor=2"},
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{"op": "add", "path": "/spec/template/spec/containers/0/command/-", "value": "--override"},
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{"op": "add", "path": "/spec/template/spec/containers/0/command/-", "value": "min.insync.replicas=2"},
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{"op": "add", "path": "/spec/template/spec/containers/0/command/-", "value": "--override"},
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{"op": "add", "path": "/spec/template/spec/containers/0/command/-", "value": "offsets.topic.replication.factor=2"},
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{"op": "add", "path": "/spec/template/spec/containers/0/command/-", "value": "--override"},
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{"op": "add", "path": "/spec/template/spec/containers/0/command/-", "value": "offsets.topic.num.partitions=2"}
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{"op": "add", "path": "/spec/template/spec/containers/0/args/-", "value": "--override"},
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{"op": "add", "path": "/spec/template/spec/containers/0/args/-", "value": "default.replication.factor=2"},
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{"op": "add", "path": "/spec/template/spec/containers/0/args/-", "value": "--override"},
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{"op": "add", "path": "/spec/template/spec/containers/0/args/-", "value": "min.insync.replicas=2"},
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{"op": "add", "path": "/spec/template/spec/containers/0/args/-", "value": "--override"},
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{"op": "add", "path": "/spec/template/spec/containers/0/args/-", "value": "offsets.topic.replication.factor=2"},
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{"op": "add", "path": "/spec/template/spec/containers/0/args/-", "value": "--override"},
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{"op": "add", "path": "/spec/template/spec/containers/0/args/-", "value": "offsets.topic.num.partitions=2"}
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]

‎variants/scale-2/zookeeper.yaml

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@@ -22,7 +22,12 @@ spec:
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# There's no validation on these numbers adding up to a coherent zk config, so watch out
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- name: PZOO_REPLICAS
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value: '0'
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- name: ZOO_REPLICAS
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- name: REPLICAS
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value: '2'
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- name: ID_OFFSET
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value: '1'
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containers:
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- name: zookeeper
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env:
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- name: REPLICAS
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value: '2'

‎variants/scale-3-3/kafka-zookeeper-connect-only-zoo.json

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[
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{"op": "add", "path": "/spec/template/spec/containers/0/args/-", "value": "--override"},
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{"op": "add", "path": "/spec/template/spec/containers/0/args/-", "value":
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"zookeeper.connect=zoo-0.zoo.$(POD_NAMESPACE).svc.cluster.local:2181,zoo-1.zoo.$(POD_NAMESPACE).svc.cluster.local:2181,zoo-2.zoo.$(POD_NAMESPACE).svc.cluster.local:2181"
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}
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]

‎variants/scale-3-3/kustomization.yaml

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bases:
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- ../scale-3-5
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patchesStrategicMerge:
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- ./only-zoo-3.yaml
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patchesJson6902:
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- target:
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group: apps
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version: v1
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kind: StatefulSet
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name: kafka
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namespace: kafka
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path: kafka-zookeeper-connect-only-zoo.json

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