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src/consul/README.md

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+# Consul
+
+[Consul](https://www.consul.io/) is a service networking solution to automate network configurations, discover services, and enable secure connectivity across any cloud or runtime.
+
+## Features
+
+- Service Discovery: Automatically discover and register services
+- Health Checking: Monitor service health and availability
+- Key/Value Store: Store configuration data
+- Multi-Datacenter: Support for multiple datacenters
+- Service Mesh: Secure service-to-service communication
+
+## Quick Start
+
+Start Consul server:
+
+```bash
+docker compose up -d
+```
+
+## Configuration
+
+### Environment Variables
+
+- `CONSUL_VERSION`: Consul version (default: `1.20.3`)
+- `CONSUL_HTTP_PORT_OVERRIDE`: HTTP API port (default: `8500`)
+- `CONSUL_DNS_PORT_OVERRIDE`: DNS query port (default: `8600`)
+- `CONSUL_SERF_LAN_PORT_OVERRIDE`: Serf LAN port (default: `8301`)
+- `CONSUL_SERF_WAN_PORT_OVERRIDE`: Serf WAN port (default: `8302`)
+- `CONSUL_SERVER_RPC_PORT_OVERRIDE`: Server RPC port (default: `8300`)
+- `CONSUL_BIND_INTERFACE`: Network interface to bind (default: `eth0`)
+- `CONSUL_CLIENT_INTERFACE`: Client network interface (default: `eth0`)
+
+## Access
+
+- Web UI: <http://localhost:8500>
+- HTTP API: <http://localhost:8500/v1>
+- DNS Query: localhost:8600
+
+## Default Configuration
+
+The default configuration runs Consul in server mode with:
+
+- Single node (bootstrap mode)
+- Web UI enabled
+- Log level: INFO
+- Datacenter: dc1
+
+## Custom Configuration
+
+Uncomment the configuration volume in `docker-compose.yaml` and create `consul.json`:
+
+```json
+{
+  "datacenter": "dc1",
+  "server": true,
+  "ui_config": {
+    "enabled": true
+  },
+  "bootstrap_expect": 1,
+  "log_level": "INFO"
+}
+```
+
+## Health Check
+
+Check Consul cluster members:
+
+```bash
+docker compose exec consul consul members
+```
+
+## Resources
+
+- Resource Limits: 1 CPU, 512MB RAM
+- Resource Reservations: 0.25 CPU, 128MB RAM