# CM Dashboard

CM Dashboard is a Rust-powered terminal UI for real-time monitoring of CMTEC infrastructure hosts. It subscribes to the CMTEC ZMQ gossip network where lightweight agents publish SMART, service, and backup metrics, and presents them in an efficient, keyboard-driven interface built with `ratatui`.

```
┌──────────────────────────────────────────────────────────────────────────────┐
│ CM Dashboard                                                                │
├────────────────────────────┬────────────────────────────┬────────────────────┤
│ NVMe Health                │ Services                   │ Memory Optimization │
│ Host: srv01                │ Host: srv01                │ Host: srv01         │
│ Status: Healthy            │ Services healthy: 5        │ Memory used: 2048 / │
│ Drives healthy/warn/crit:  │ Degraded: 1 Failed: 0      │ 4096 MiB (50.0%)    │
│ 4/0/0                      │ CPU top service: 71.3%     │ Last update: 12:34: │
│ Capacity used: 512.0 /     │ Total memory: 1536 / 2048  │ 56                  │
│ 2048.0 GiB                 │ MiB                        │                      │
├────────────────────────────┴────────────┬───────────────┴────────────────────┤
│ Backups                                  │ Alerts                          │
│ Host: srv01                              │ srv01: OK                       │
│ Status: Healthy                          │ labbox: smart warning           │
│ Last success: 2024-02-01 03:12:45        │                                   │
│ Snapshots: 17 • Size: 512.0 GiB          │                                   │
│ Pending jobs: 0 (enabled: true)          │                                   │
└──────────────────────────────┬───────────────────────────────────────────────┘
│ Status                       │                                                │
│ Active host: srv01 (1/3)     │ History retention ≈ 3600s                      │
│ Config: config/dashboard.toml│ Default host: labbox                           │
└──────────────────────────────┴───────────────────────────────────────────────┘
```

## Requirements

- Rust toolchain 1.75+ (install via [`rustup`](https://rustup.rs))
- Network access to the CMTEC metrics gossip agents (default `tcp://<host>:6130`)
- Configuration files under `config/` describing hosts and dashboard preferences

## Installation

Clone the repository and build with Cargo:

```bash
git clone https://github.com/cmtec/cm-dashboard.git
cd cm-dashboard
cargo build --release
```

The optimized binary is available at `target/release/cm-dashboard`. To install into your Cargo bin directory:

```bash
cargo install --path .
```

## Configuration

On first launch, the dashboard will create `config/dashboard.toml` and `config/hosts.toml` automatically if they do not exist.

You can also generate starter configuration files manually with the built-in helper:

```bash
cargo run -- init-config
# or, once installed
cm-dashboard init-config --dir ./config --force
```

This produces `config/dashboard.toml` and `config/hosts.toml`. The primary dashboard config looks like:

```toml
[hosts]
default_host = "srv01"

[[hosts.hosts]]
name = "srv01"
enabled = true

[[hosts.hosts]]
name = "labbox"
enabled = true

[dashboard]
tick_rate_ms = 250
history_duration_minutes = 60

[[dashboard.widgets]]
id = "nvme"
enabled = true

[[dashboard.widgets]]
id = "alerts"
enabled = true

[data_source]
kind = "zmq"

[data_source.zmq]
endpoints = ["tcp://127.0.0.1:6130"]
```

Adjust the host list and `data_source.zmq.endpoints` to match your CMTEC gossip network. If you prefer to manage hosts separately, edit the generated `hosts.toml` file.

## Features

- Rotating host selection with left/right arrows (`←`, `→`, `h`, `l`, `Tab`)
- Live NVMe, service, memory, backup, and alert summaries per active host
- Structured logging with `tracing` (`-v`/`-vv` to increase verbosity)
- Help overlay (`?`) outlining keyboard shortcuts
- Config-driven host discovery via `config/dashboard.toml`

## Getting Started

```bash
cargo run -- --config config/dashboard.toml
# specify a single host
cargo run -- --host srv01
# override ZMQ endpoints at runtime
cargo run -- --zmq-endpoint tcp://srv01:6130,tcp://labbox:6130
# increase logging verbosity
cargo run -- -v
```

### Keyboard Shortcuts

| Key | Action |
| --- | --- |
| `←` / `h` | Previous host |
| `→` / `l` / `Tab` | Next host |
| `?` | Toggle help overlay |
| `r` | Update status message |
| `q` / `Esc` | Quit |

## Development

- Format: `cargo fmt`
- Check: `cargo check`
- Run: `cargo run`

The dashboard subscribes to the CMTEC ZMQ gossip network (default `tcp://127.0.0.1:6130`). Received metrics are cached per host and retained in an in-memory ring buffer for future trend analysis.