Initialize placeholder docker and chart roles

playbooks/roles/README.md

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+# Playbook roles planning
+
+This document clarifies what should live under `/playbooks/roles/` for host-level automation (Ansible) versus what should be delivered through Helm charts, and ensures we cover the five tiers across data platforms: data warehouse → big data → ML → DL → large models.
+
+## Scope rules
+- **Ansible roles**: host-coupled configuration that is not itself a cloud resource (GPU driver/runtime, OS tuning, user/SSH prep, rendering on-host config files, database bootstrapping, etc.).
+- **Helm charts**: anything that runs as a Kubernetes workload (operators, clusters, services running in pods).
+
+## Base roles shared across tiers (Ansible)
+- GPU driver and CUDA stack installation.
+- Docker/Containerd runtime setup.
+- System parameter tuning (kernel limits, hugepages, network stack), plus user home/SSH layout.
+- Database initialization tasks (e.g., bootstrap PostgreSQL/ClickHouse on hosts) and rendering templated configs such as `ClickHouse/users.xml`.
+
+## Coverage by capability tier
+| Tier | Host-focused roles (Ansible) | Kubernetes services (Helm) |
+| --- | --- | --- |
+| Data warehouse | ClickHouse host bootstrap & config render; PostgreSQL init where needed. |  — |
+| Big data | JVM/runtime, local disks, and OS tuning for data nodes. | Spark Operator; Flink Operator; Kafka/Redpanda; MinIO. |
+| ML | GPU runtime base (drivers, container runtime), Python ML base image prep; user workspace/SSH. | Ray Cluster; MLflow; JupyterHub. |
+| DL | Same GPU/system tuning plus inference node bootstrap (tensorRT/cuDNN as needed). | Triton Inference Server; LMDeploy (for deployment runtimes). |
+| Large models | Secure SSH/user profiles and config templating for model storage/IO. | vLLM serving; model-specific Helm releases atop Ray/K8s. |
+
+## Suggested role layout under `/playbooks/roles/`
+- `common/` (new): shared tasks for system tuning, users/SSH, and package repos for GPU/runtime support.
+- `gpu/`: install GPU drivers + CUDA toolkit.
+- `container_runtime/`: install and configure Docker/Containerd with GPU runtime integration.
+- `database_init/`: bootstrap on-host databases (e.g., PostgreSQL, ClickHouse), render config files (`users.xml`, etc.).
+- `bigdata_node_prep/`: OS/disk tuning for Spark/Flink/Kafka/Redpanda/MinIO hosts.
+- `ml_node_prep/`: Python/conda base, SSH workspace prep for ML workloads.
+- `dl_inference_node/`: tensorRT/cuDNN dependencies and runtime checks for Triton/LMDeploy nodes.
+
+Helm-delivered components should live under `playbooks/roles/charts/` or the repo’s Helm release structure and include Spark/Flink Operators, Kafka/Redpanda/MinIO, Ray Cluster, Triton, vLLM/LMDeploy, MLflow, and JupyterHub.

playbooks/roles/charts/embedding-service/README.md

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+# embedding-service (chart)
+
+Placeholder role for managing the Helm chart release of embedding-service.

playbooks/roles/charts/embedding-service/tasks/main.yml

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+---
+# TODO: implement Helm release tasks
+- name: Placeholder task
+  debug:
+    msg: "Role placeholder. Implement Helm release tasks."

playbooks/roles/charts/feast/README.md

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+# feast (chart)
+
+Placeholder role for managing the Helm chart release of feast.

playbooks/roles/charts/feast/tasks/main.yml

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+---
+# TODO: implement Helm release tasks
+- name: Placeholder task
+  debug:
+    msg: "Role placeholder. Implement Helm release tasks."

playbooks/roles/charts/flink-operator/README.md

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+# flink-operator (chart)
+
+Placeholder role for managing the Helm chart release of flink-operator.

playbooks/roles/charts/flink-operator/tasks/main.yml

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+---
+# TODO: implement Helm release tasks
+- name: Placeholder task
+  debug:
+    msg: "Role placeholder. Implement Helm release tasks."

playbooks/roles/charts/grafana/README.md

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+# grafana (chart)
+
+Placeholder role for managing the Helm chart release of grafana.

playbooks/roles/charts/grafana/tasks/main.yml

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+---
+# TODO: implement Helm release tasks
+- name: Placeholder task
+  debug:
+    msg: "Role placeholder. Implement Helm release tasks."

playbooks/roles/charts/iceberg-bucket/README.md

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+# iceberg-bucket (chart)
+
+Placeholder role for managing the Helm chart release of iceberg-bucket.

playbooks/roles/charts/iceberg-bucket/tasks/main.yml

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+---
+# TODO: implement Helm release tasks
+- name: Placeholder task
+  debug:
+    msg: "Role placeholder. Implement Helm release tasks."

playbooks/roles/charts/inference-gateway/README.md

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+# inference-gateway (chart)
+
+Placeholder role for managing the Helm chart release of inference-gateway.

playbooks/roles/charts/inference-gateway/tasks/main.yml

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+---
+# TODO: implement Helm release tasks
+- name: Placeholder task
+  debug:
+    msg: "Role placeholder. Implement Helm release tasks."

playbooks/roles/charts/kafka-cluster/README.md

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+# kafka-cluster (chart)
+
+Placeholder role for managing the Helm chart release of kafka-cluster.

playbooks/roles/charts/kafka-cluster/tasks/main.yml

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+---
+# TODO: implement Helm release tasks
+- name: Placeholder task
+  debug:
+    msg: "Role placeholder. Implement Helm release tasks."

playbooks/roles/charts/loki/README.md

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+# loki (chart)
+
+Placeholder role for managing the Helm chart release of loki.

playbooks/roles/charts/loki/tasks/main.yml

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+---
+# TODO: implement Helm release tasks
+- name: Placeholder task
+  debug:
+    msg: "Role placeholder. Implement Helm release tasks."

playbooks/roles/charts/minio/README.md

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+# minio (chart)
+
+Placeholder role for managing the Helm chart release of minio.

playbooks/roles/charts/minio/tasks/main.yml

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+---
+# TODO: implement Helm release tasks
+- name: Placeholder task
+  debug:
+    msg: "Role placeholder. Implement Helm release tasks."

playbooks/roles/charts/mlflow/README.md

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+# mlflow (chart)
+
+Placeholder role for managing the Helm chart release of mlflow.

playbooks/roles/charts/mlflow/tasks/main.yml

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+---
+# TODO: implement Helm release tasks
+- name: Placeholder task
+  debug:
+    msg: "Role placeholder. Implement Helm release tasks."

playbooks/roles/charts/nvidia-operator/README.md

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+# nvidia-operator (chart)
+
+Placeholder role for managing the Helm chart release of nvidia-operator.

playbooks/roles/charts/nvidia-operator/tasks/main.yml

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+---
+# TODO: implement Helm release tasks
+- name: Placeholder task
+  debug:
+    msg: "Role placeholder. Implement Helm release tasks."

playbooks/roles/charts/openobserve/README.md

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+# openobserve (chart)
+
+Placeholder role for managing the Helm chart release of openobserve.

playbooks/roles/charts/openobserve/tasks/main.yml

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+---
+# TODO: implement Helm release tasks
+- name: Placeholder task
+  debug:
+    msg: "Role placeholder. Implement Helm release tasks."

playbooks/roles/charts/postgres/README.md

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+# postgres (chart)
+
+Placeholder role for managing the Helm chart release of postgres.

playbooks/roles/charts/postgres/tasks/main.yml

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+---
+# TODO: implement Helm release tasks
+- name: Placeholder task
+  debug:
+    msg: "Role placeholder. Implement Helm release tasks."

playbooks/roles/charts/prometheus-stack/README.md

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+# prometheus-stack (chart)
+
+Placeholder role for managing the Helm chart release of prometheus-stack.

playbooks/roles/charts/prometheus-stack/tasks/main.yml

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+---
+# TODO: implement Helm release tasks
+- name: Placeholder task
+  debug:
+    msg: "Role placeholder. Implement Helm release tasks."

playbooks/roles/charts/ray-cluster/README.md

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+# ray-cluster (chart)
+
+Placeholder role for managing the Helm chart release of ray-cluster.

playbooks/roles/charts/ray-cluster/tasks/main.yml

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+---
+# TODO: implement Helm release tasks
+- name: Placeholder task
+  debug:
+    msg: "Role placeholder. Implement Helm release tasks."

playbooks/roles/charts/redpanda/README.md

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+# redpanda (chart)
+
+Placeholder role for managing the Helm chart release of redpanda.

playbooks/roles/charts/redpanda/tasks/main.yml

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+---
+# TODO: implement Helm release tasks
+- name: Placeholder task
+  debug:
+    msg: "Role placeholder. Implement Helm release tasks."

playbooks/roles/charts/sglang/README.md

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+# sglang (chart)
+
+Placeholder role for managing the Helm chart release of sglang.

playbooks/roles/charts/sglang/tasks/main.yml

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+---
+# TODO: implement Helm release tasks
+- name: Placeholder task
+  debug:
+    msg: "Role placeholder. Implement Helm release tasks."

playbooks/roles/charts/spark-operator/README.md

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+# spark-operator (chart)
+
+Placeholder role for managing the Helm chart release of spark-operator.

playbooks/roles/charts/spark-operator/tasks/main.yml

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+---
+# TODO: implement Helm release tasks
+- name: Placeholder task
+  debug:
+    msg: "Role placeholder. Implement Helm release tasks."

playbooks/roles/charts/tempo/README.md

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+# tempo (chart)
+
+Placeholder role for managing the Helm chart release of tempo.

playbooks/roles/charts/tempo/tasks/main.yml

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+---
+# TODO: implement Helm release tasks
+- name: Placeholder task
+  debug:
+    msg: "Role placeholder. Implement Helm release tasks."

playbooks/roles/charts/trino/README.md

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+# trino (chart)
+
+Placeholder role for managing the Helm chart release of trino.

playbooks/roles/charts/trino/tasks/main.yml

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+---
+# TODO: implement Helm release tasks
+- name: Placeholder task
+  debug:
+    msg: "Role placeholder. Implement Helm release tasks."

playbooks/roles/charts/vllm/README.md

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+# vllm (chart)
+
+Placeholder role for managing the Helm chart release of vllm.

playbooks/roles/charts/vllm/tasks/main.yml

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+---
+# TODO: implement Helm release tasks
+- name: Placeholder task
+  debug:
+    msg: "Role placeholder. Implement Helm release tasks."

playbooks/roles/docker/clickhouse/README.md

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+# clickhouse (docker)
+
+Placeholder role for docker-compose style deployment of clickhouse.

playbooks/roles/docker/clickhouse/tasks/main.yml

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+---
+# TODO: implement docker deployment tasks
+- name: Placeholder task
+  debug:
+    msg: "Role placeholder. Implement docker deployment tasks."

playbooks/roles/docker/embedding-service/README.md

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+# embedding-service (docker)
+
+Placeholder role for docker-compose style deployment of embedding-service.

playbooks/roles/docker/embedding-service/tasks/main.yml

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+---
+# TODO: implement docker deployment tasks
+- name: Placeholder task
+  debug:
+    msg: "Role placeholder. Implement docker deployment tasks."

playbooks/roles/docker/grafana/README.md

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+# grafana (docker)
+
+Placeholder role for docker-compose style deployment of grafana.

playbooks/roles/docker/grafana/tasks/main.yml

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+---
+# TODO: implement docker deployment tasks
+- name: Placeholder task
+  debug:
+    msg: "Role placeholder. Implement docker deployment tasks."

playbooks/roles/docker/kafka/README.md

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+# kafka (docker)
+
+Placeholder role for docker-compose style deployment of kafka.

playbooks/roles/docker/kafka/tasks/main.yml

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+---
+# TODO: implement docker deployment tasks
+- name: Placeholder task
+  debug:
+    msg: "Role placeholder. Implement docker deployment tasks."

playbooks/roles/docker/loki/README.md

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+# loki (docker)
+
+Placeholder role for docker-compose style deployment of loki.

playbooks/roles/docker/loki/tasks/main.yml

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+---
+# TODO: implement docker deployment tasks
+- name: Placeholder task
+  debug:
+    msg: "Role placeholder. Implement docker deployment tasks."

playbooks/roles/docker/minio/README.md

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+# minio (docker)
+
+Placeholder role for docker-compose style deployment of minio.

playbooks/roles/docker/minio/tasks/main.yml

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+---
+# TODO: implement docker deployment tasks
+- name: Placeholder task
+  debug:
+    msg: "Role placeholder. Implement docker deployment tasks."

playbooks/roles/docker/mlflow/README.md

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+# mlflow (docker)
+
+Placeholder role for docker-compose style deployment of mlflow.

playbooks/roles/docker/mlflow/tasks/main.yml

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+---
+# TODO: implement docker deployment tasks
+- name: Placeholder task
+  debug:
+    msg: "Role placeholder. Implement docker deployment tasks."

playbooks/roles/docker/postgres/README.md

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+# postgres (docker)
+
+Placeholder role for docker-compose style deployment of postgres.

playbooks/roles/docker/postgres/tasks/main.yml

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+---
+# TODO: implement docker deployment tasks
+- name: Placeholder task
+  debug:
+    msg: "Role placeholder. Implement docker deployment tasks."

playbooks/roles/docker/ray/README.md

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+# ray (docker)
+
+Placeholder role for docker-compose style deployment of ray.

playbooks/roles/docker/ray/tasks/main.yml

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+---
+# TODO: implement docker deployment tasks
+- name: Placeholder task
+  debug:
+    msg: "Role placeholder. Implement docker deployment tasks."

playbooks/roles/docker/redpanda/README.md

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+# redpanda (docker)
+
+Placeholder role for docker-compose style deployment of redpanda.

playbooks/roles/docker/redpanda/tasks/main.yml

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+---
+# TODO: implement docker deployment tasks
+- name: Placeholder task
+  debug:
+    msg: "Role placeholder. Implement docker deployment tasks."

playbooks/roles/docker/sglang/README.md

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+# sglang (docker)
+
+Placeholder role for docker-compose style deployment of sglang.

playbooks/roles/docker/sglang/tasks/main.yml

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+---
+# TODO: implement docker deployment tasks
+- name: Placeholder task
+  debug:
+    msg: "Role placeholder. Implement docker deployment tasks."

playbooks/roles/docker/trino/README.md

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+# trino (docker)
+
+Placeholder role for docker-compose style deployment of trino.

playbooks/roles/docker/trino/tasks/main.yml

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+---
+# TODO: implement docker deployment tasks
+- name: Placeholder task
+  debug:
+    msg: "Role placeholder. Implement docker deployment tasks."

playbooks/roles/docker/vllm/README.md

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+# vllm (docker)
+
+Placeholder role for docker-compose style deployment of vllm.

playbooks/roles/docker/vllm/tasks/main.yml

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+---
+# TODO: implement docker deployment tasks
+- name: Placeholder task
+  debug:
+    msg: "Role placeholder. Implement docker deployment tasks."