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+# Netdata Cloud On-Prem
+
+Netdata Cloud is built as microservices and is orchestrated by a Kubernetes cluster, providing a highly available and auto-scaled observability platform.
+
+The overall architecture looks like this:
+
+```mermaid
+flowchart TD
+    agents("🌍 <b>Netdata Agents</b><br/>Users' infrastructure<br/>Netdata Children & Parents")
+    users[["🔥 <b>Unified Dashboards</b><br/>Integrated Infrastructure<br/>Dashboards"]]
+    ingress("🛡️ <b>Ingress Gateway</b><br/>TLS termination")
+    traefik((("🔒 <b>Traefik</b><br/>Authentication &<br/>Authorization")))
+    emqx(("📤 <b>EMQX</b><br/>Agents Communication<br/>Message Bus<br/>MQTT"))
+    pulsar(("⚡ <b>Pulsar</b><br/>Internal Microservices<br/>Message Bus"))
+    frontend("🌐 <b>Front-End</b><br/>Static Web Files")
+    auth("👨‍💼 <b>Users &amp; Agents</b><br/>Authorization<br/>Microservices")
+    spaceroom("🏡 <b>Spaces, Rooms,<br/>Nodes, Settings</b><br/>Microservices for<br/>managing Spaces,<br/>Rooms, Nodes and<br/>related settings")
+    charts("📈 <b>Metrics & Queries</b><br/>Microservices for<br/>dispatching queries<br/>to Netdata agents")
+    alerts("🔔 <b>Alerts & Notifications</b><br/>Microservices for<br/>tracking alert<br/>transitions and<br/>deduplicating alerts")
+    sql[("✨ <b>PostgreSQL</b><br/>Users, Spaces, Rooms,<br/>Agents, Nodes, Metric<br/>Names, Metrics Retention,<br/>Custom Dashboards,<br/>Settings")]
+    redis[("🗒️ <b>Redis</b><br/>Caches needed<br/>by Microservices")]
+    elk[("🗞️ <b>Elasticsearch</b><br/>Feed Events Database")]
+    bridges("🤝 <b>Input & Output</b><br/>Microservices bridging<br/>agents to internal<br/>components")
+    notifications("📢 <b>Notifications Integrations</b><br/>Dispatch alert<br/>notifications to<br/>3rd party services")
+    feed("📝 <b>Feed & Events</b><br/>Microservices for<br/>managing the events feed")
+    users --> ingress
+    agents --> ingress
+    ingress --> traefik
+    traefik ==>|agents<br/>websockets| emqx
+    traefik -.- auth
+    traefik ==>|http| spaceroom
+    traefik ==>|http| frontend
+    traefik ==>|http| charts
+    traefik ==>|http| alerts
+    spaceroom o-...-o pulsar
+    spaceroom -.- redis
+    spaceroom x-..-x sql
+    spaceroom -.-> feed
+    charts o-.-o pulsar
+    charts -.- redis
+    charts x-.-x sql
+    charts -..-> feed
+    alerts o-.-o pulsar
+    alerts -.- redis
+    alerts x-.-x sql
+    alerts -..-> feed
+    auth o-.-o pulsar
+    auth -.- redis
+    auth x-.-x sql
+    auth -.-> feed
+    feed <--> elk
+    alerts ----> notifications
+    %% auth ~~~ spaceroom
+    emqx <.-> bridges o-..-o pulsar
+```
+
+## Requirements
+
+The following components are required to run Netdata Cloud On-Prem:
+
+- **Kubernetes cluster** version 1.23+
+- **Kubernetes metrics server** (for autoscaling)
+- **TLS certificate** for secure connections. A single endpoint is required but there is an option to split the frontend, api, and MQTT endpoints. The certificate must be trusted by all entities connecting to it.
+- Default **storage class configured and working** (persistent volumes based on SSDs are preferred)
+
+The following 3rd party components are used, which can be pulled with the `netdata-cloud-dependency` package we provide:
+
+- **Ingress controller** supporting HTTPS
+- **PostgreSQL** version 13.7 (main database for all metadata Netdata Cloud maintains)
+- **EMQX** version 5.11 (MQTT Broker that allows Agents to send messages to the On-Prem Cloud)
+- **Apache Pulsar** version 2.10+ (message broken for inter-container communication)
+- **Traefik** version 2.7.x (internal API Gateway)
+- **Elasticsearch** version 8.8.x (stores the feed of events)
+- **Redis** version 6.2 (caching)
+- imagePullSecret (our ECR repos are secured)
+
+Keep in mind though that the pulled versions are not configured properly for production use. Customers of Netdata Cloud On-Prem are expected to configure these applications according to their needs and policies for production use. Netdata Cloud On-Prem can be configured to use all these applications as a shared resource from other existing production installations.