Redpanda single replica from helm chart using Yolean/unhelm#3

kafka/.gitignore

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+
+# ./unhelm.sh output that we don't need
+helm
+redpanda/ystack/kustomization.yaml
+redpanda/ystack/redpanda/templates/poddisruptionbudget.yaml
+redpanda/ystack/redpanda/templates/tests

kafka/redpanda.ystack.values.yaml

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+# yaml-language-server: $schema=https://github.com/redpanda-data/helm-charts/raw/redpanda-4.0.32/charts/redpanda/values.schema.json
+# unhelm-template-repo: https://charts.redpanda.com
+# unhelm-namespace: kafka
+
+# this is an attempt to disable as much as possible from the chart, except the actual broker
+statefulset:
+  replicas: 1
+  additionalRedpandaCmdFlags:
+  - --overprovisioned
+  sideCars:
+    configWatcher:
+      enabled: false
+tls:
+  enabled: false
+config:
+  cluster:
+    auto_create_topics_enabled: false
+  tunable: {}
+  node: {}
+external:
+  enabled: false
+rbac:
+  enabled: false
+post_install_job:
+  enabled: false
+post_upgrade_job:
+  enabled: false
+console:
+  enabled: false
+logging:
+  logLevel: info
+  usageStats:
+    enabled: false
+tuning:
+  tune_aio_events: false
+# See forwarded ports in ../k3s/ystack.yaml
+# See also https://github.com/redpanda-data/helm-charts/issues/285
+listeners:
+  kafka:
+    port: 9092
+    external:
+      default:
+        advertisedPorts:
+        - 31712
+  http:
+    port: 8082
+    external:
+      default:
+        advertisedPorts:
+        - 31713

kafka/redpanda/ystack/redpanda/templates/configmap.yaml

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+---
+# Source: redpanda/templates/configmap.yaml
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: redpanda
+  namespace: "kafka"
+  labels:
+    app.kubernetes.io/component: redpanda
+    app.kubernetes.io/instance: redpanda
+    app.kubernetes.io/managed-by: Helm
+    app.kubernetes.io/name: redpanda
+    helm.sh/chart: redpanda-4.0.47
+data:
+  bootstrap.yaml: |
+    kafka_enable_authorization: false
+    enable_sasl: false
+    auto_create_topics_enabled: false
+    compacted_log_segment_size: 67108864
+    group_topic_partitions: 16
+    kafka_batch_max_bytes: 1048576
+    kafka_connection_rate_limit: 1000
+    log_segment_size: 134217728
+    log_segment_size_max: 268435456
+    log_segment_size_min: 16777216
+    max_compacted_log_segment_size: 536870912
+    topic_partitions_per_shard: 1000
+    storage_min_free_bytes: 1073741824
+  redpanda.yaml: |
+    config_file: /etc/redpanda/redpanda.yaml
+    redpanda:
+      empty_seed_starts_cluster: false
+      kafka_enable_authorization: false
+      enable_sasl: false
+      auto_create_topics_enabled: false
+      compacted_log_segment_size: 67108864
+      group_topic_partitions: 16
+      kafka_batch_max_bytes: 1048576
+      kafka_connection_rate_limit: 1000
+      log_segment_size: 134217728
+      log_segment_size_max: 268435456
+      log_segment_size_min: 16777216
+      max_compacted_log_segment_size: 536870912
+      topic_partitions_per_shard: 1000
+      storage_min_free_bytes: 1073741824
+      admin:
+        - name: internal
+          address: 0.0.0.0
+          port: 9644
+        - name: default
+          address: 0.0.0.0
+          port: 9645
+      admin_api_tls:
+      kafka_api:
+        - name: internal
+          address: 0.0.0.0
+          port: 9092
+        - name: default
+          address: 0.0.0.0
+          port: 9094
+      kafka_api_tls:
+      rpc_server:
+        address: 0.0.0.0
+        port: 33145
+      seed_servers:
+        - host:
+            address: redpanda-0.redpanda.kafka.svc.cluster.local.
+            port: 33145
+    schema_registry:
+      schema_registry_api:
+        - name: internal
+          address: 0.0.0.0
+          port: 8081
+        - name: default
+          address: 0.0.0.0
+          port: 8084
+      schema_registry_api_tls:
+    pandaproxy:
+      pandaproxy_api:
+        - name: internal
+          address: 0.0.0.0
+          port: 8082
+        - name: default
+          address: 0.0.0.0
+          port: 8083
+      pandaproxy_api_tls:
+
+    rpk:
+      enable_usage_stats: false
+      overprovisioned: false
+      enable_memory_locking: false
+      tune_aio_events: false

kafka/redpanda/ystack/redpanda/templates/secrets.yaml

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+---
+# Source: redpanda/templates/secrets.yaml
+apiVersion: v1
+kind: Secret
+metadata:
+  name: redpanda-sts-lifecycle
+  namespace: "kafka"
+  labels:
+    app.kubernetes.io/component: redpanda
+    app.kubernetes.io/instance: redpanda
+    app.kubernetes.io/managed-by: Helm
+    app.kubernetes.io/name: redpanda
+    helm.sh/chart: redpanda-4.0.47
+type: Opaque
+stringData:
+  common.sh: |-
+    #!/usr/bin/env bash
+
+    # the SERVICE_NAME comes from the metadata.name of the pod, essentially the POD_NAME
+    CURL_URL="http://${SERVICE_NAME}.redpanda.kafka.svc.cluster.local:9644"
+
+    # commands used throughout
+    CURL_NODE_ID_CMD="curl --silent --fail  ${CURL_URL}/v1/node_config"
+
+    CURL_MAINTENANCE_DELETE_CMD_PREFIX='curl -X DELETE --silent -o /dev/null -w "%{http_code}"'
+    CURL_MAINTENANCE_PUT_CMD_PREFIX='curl -X PUT --silent -o /dev/null -w "%{http_code}"'
+    CURL_MAINTENANCE_GET_CMD="curl -X GET --silent  ${CURL_URL}/v1/maintenance"
+
+  postStart.sh: |-
+    #!/usr/bin/env bash
+    # This code should be similar if not exactly the same as that found in the panda-operator, see
+    # https://github.com/redpanda-data/redpanda/blob/e51d5b7f2ef76d5160ca01b8c7a8cf07593d29b6/src/go/k8s/pkg/resources/secret.go
+
+    # path below should match the path defined on the statefulset
+    source /var/lifecycle/common.sh
+
+  preStop.sh: |-
+    #!/usr/bin/env bash
+    # This code should be similar if not exactly the same as that found in the panda-operator, see
+    # https://github.com/redpanda-data/redpanda/blob/e51d5b7f2ef76d5160ca01b8c7a8cf07593d29b6/src/go/k8s/pkg/resources/secret.go
+
+    # path below should match the path defined on the statefulset
+    source /var/lifecycle/common.sh
+
+    set -x

kafka/redpanda/ystack/redpanda/templates/service.internal.yaml

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+---
+# Source: redpanda/templates/service.internal.yaml
+# This service is only used to create the DNS enteries for each pod in
+# the stateful set and allow the serviceMonitor to target the pods.
+# This service should not be used by any client application
+apiVersion: v1
+kind: Service
+metadata:
+  name: redpanda
+  namespace: "kafka"
+  labels:
+    monitoring.redpanda.com/enabled: "false"
+    app.kubernetes.io/component: redpanda
+    app.kubernetes.io/instance: redpanda
+    app.kubernetes.io/managed-by: Helm
+    app.kubernetes.io/name: redpanda
+    helm.sh/chart: redpanda-4.0.47
+spec:
+  type: ClusterIP
+  publishNotReadyAddresses: true
+  clusterIP: None
+  selector:
+    app.kubernetes.io/name: redpanda
+    app.kubernetes.io/instance: "redpanda"
+  ports:
+    - name: admin
+      protocol: TCP
+      targetPort: 9644
+      port: 9644