Jason Kulatunga
2 years ago
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> See [docker/example.hubspoke.docker-compose.yml](https://github.com/AnalogJ/scrutiny/blob/master/docker/example.hubspoke.docker-compose.yml) for a docker-compose file.
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>
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See [docker/example.hubspoke.docker-compose.yml](https://github.com/AnalogJ/scrutiny/blob/master/docker/example.hubspoke.docker-compose.yml)
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for a docker-compose file.
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> The following guide was contributed by @TinJoy59 in #417
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> It describes how to deploy the Scrutiny in Hub/Spoke mode, where the Hub is running in Docker, and the Spokes (
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> collectors) are running as binaries.
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> He's using Proxmox & Synology in his guide, however this should be applicable for almost anyone
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# S.M.A.R.T. Monitoring with Scrutiny across machines
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### 🤔 The problem:
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Scrutiny offers a nice Docker package called "Omnibus" that can monitor HDDs attached to a Docker host with relative
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ease. Scrutiny can also be installed in a Hub-Spoke layout where Web interface, Database and Collector come in 3
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separate packages. The official documentation assumes that the spokes in the "Hub-Spokes layout" run Docker, which is
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not always the case. The third approach is to install Scrutiny manually, entirely outside of Docker.
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### 💡 The solution:
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This tutorial provides a hybrid configuration where the Hub lives in a Docker instance while the spokes have only
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Scrutiny Collector installed manually. The Collector periodically send data to the Hub. It's not mind-boggling hard to
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understand but someone might struggle with the setup. This is for them.
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### 🖥️ My setup:
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I have a Proxmox cluster where one VM runs Docker and all monitoring services - Grafana, Prometheus, various exporters,
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InfluxDB and so forth. Another VM runs the NAS - OpenMediaVault v6, where all hard drives reside. The Scrutiny Collector
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is triggered every 30min to collect data on the drives. The data is sent to the Docker VM, running InfluxDB.
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## Setting up the Hub
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The Hub consists of Scrutiny Web - a web interface for viewing the SMART data. And InfluxDB, where the smartmon data is
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stored.
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[🔗This is the official Hub-Spoke layout in docker-compose.](https://github.com/AnalogJ/scrutiny/blob/master/docker/example.hubspoke.docker-compose.yml)
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We are going to reuse parts of it. The ENV variables provide the necessary configuration for the initial setup, both for
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InfluxDB and Scrutiny.
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If you are working with and existing InfluxDB instance, you can forgo all the `INIT` variables as they already exist.
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The official Scrutiny documentation has a
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sample [scrutiny.yaml ](https://github.com/AnalogJ/scrutiny/blob/master/example.scrutiny.yaml)file that normally
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contains the connection and notification details but I always find it easier to configure as much as possible in the
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docker-compose.
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```yaml
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version: "3.4"
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networks:
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monitoring: # A common network for all monitoring services to communicate into
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external: true
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notifications: # To Gotify or another Notification service
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external: true
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services:
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influxdb:
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container_name: influxdb
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image: influxdb:2.1-alpine
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ports:
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- 8086:8086
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volumes:
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- ${DIR_CONFIG}/influxdb2/db:/var/lib/influxdb2
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- ${DIR_CONFIG}/influxdb2/config:/etc/influxdb2
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environment:
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- DOCKER_INFLUXDB_INIT_MODE=setup
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- DOCKER_INFLUXDB_INIT_USERNAME=Admin
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- DOCKER_INFLUXDB_INIT_PASSWORD=${PASSWORD}
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- DOCKER_INFLUXDB_INIT_ORG=homelab
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- DOCKER_INFLUXDB_INIT_BUCKET=scrutiny
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- DOCKER_INFLUXDB_INIT_ADMIN_TOKEN=your-very-secret-token
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restart: unless-stopped
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networks:
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- monitoring
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scrutiny:
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container_name: scrutiny
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image: ghcr.io/analogj/scrutiny:master-web
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ports:
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- 8080:8080
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volumes:
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- ${DIR_CONFIG}/scrutiny/config:/opt/scrutiny/config
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environment:
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- SCRUTINY_WEB_INFLUXDB_HOST=influxdb
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- SCRUTINY_WEB_INFLUXDB_PORT=8086
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- SCRUTINY_WEB_INFLUXDB_TOKEN=your-very-secret-token
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- SCRUTINY_WEB_INFLUXDB_ORG=homelab
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- SCRUTINY_WEB_INFLUXDB_BUCKET=scrutiny
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# Optional but highly recommended to notify you in case of a problem
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- SCRUTINY_WEB_NOTIFY_URLS=["http://gotify:80/message?token=a-gotify-token"]
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depends_on:
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- influxdb
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restart: unless-stopped
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networks:
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- notifications
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- monitoring
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```
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A freshly initialized Scrutiny instance can be accessed on port 8080, eg. `192.168.0.100:8080`. The interface will be
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empty because no metrics have been collected yet.
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## Setting up a Spoke ***without*** Docker
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A spoke consists of the Scrutiny Collector binary that is run on a set interval via crontab and sends the data to the
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Hub. The official
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documentation [describes the manual setup of the Collector](https://github.com/AnalogJ/scrutiny/blob/master/docs/INSTALL_MANUAL.md#collector)
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- dependencies and step by step commands. I have a shortened version that does the same thing but in one line of code.
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```bash
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# Installing dependencies
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apt install smartmontools -y
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# 1. Create directory for the binary
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# 2. Download the binary into that directory
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# 3. Make it exacutable
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# 4. List the contents of the library for confirmation
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mkdir -p /opt/scrutiny/bin && \
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curl -L https://github.com/AnalogJ/scrutiny/releases/download/v0.5.0/scrutiny-collector-metrics-linux-amd64 > /opt/scrutiny/bin/scrutiny-collector-metrics-linux-amd64 && \
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chmod +x /opt/scrutiny/bin/scrutiny-collector-metrics-linux-amd64 && \
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ls -lha /opt/scrutiny/bin
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```
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<p class="callout warning">When downloading Github Release Assests, make sure that you have the correct version. The provided example is with Release v0.5.0. [The release list can be found here.](https://github.com/analogj/scrutiny/releases) </p>
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Once the Collector is installed, you can run it with the following command. Make sure to add the correct address and
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port of your Hub as `--api-endpoint`.
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```bash
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/opt/scrutiny/bin/scrutiny-collector-metrics-linux-amd64 run --api-endpoint "http://192.168.0.100:8080"
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```
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This will run the Collector once and populate the Web interface of your Scrutiny instance. In order to collect metrics
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for a time series, you need to run the command repeatedly. Here is an example for crontab, running the Collector every
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15min.
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```bash
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# open crontab
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crontab -e
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# add a line for Scrutiny
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*/15 * * * * /opt/scrutiny/bin/scrutiny-collector-metrics-linux-amd64 run --api-endpoint "http://192.168.0.100:8080"
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```
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The Collector has its own independent config file that lives in `/opt/scrutiny/config/collector.yaml` but I did not find
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a need to modify
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it. [A default collector.yaml can be found in the official documentation.](https://github.com/AnalogJ/scrutiny/blob/master/example.collector.yaml)
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## Setting up a Spoke ***with*** Docker
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Setting up a remote Spoke in Docker requires you to split
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the [official Hub-Spoke layout docker-compose.yml](https://github.com/AnalogJ/scrutiny/blob/master/docker/example.hubspoke.docker-compose.yml)
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. In the following docker-compose you need to provide the `${API_ENDPOINT}`, in my case `http://192.168.0.100:8080`.
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Also all drives that you wish to monitor need to be presented to the container under `devices`.
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The image handles the periodic scanning of the drives.
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```yaml
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version: "3.4"
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services:
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collector:
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image: 'ghcr.io/analogj/scrutiny:master-collector'
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cap_add:
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- SYS_RAWIO
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volumes:
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- '/run/udev:/run/udev:ro'
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environment:
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COLLECTOR_API_ENDPOINT: ${API_ENDPOINT}
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devices:
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- "/dev/sda"
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- "/dev/sdb"
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```
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