Hard Drive S.M.A.R.T Monitoring, Historical Trends & Real World Failure Thresholds
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README.md

scrutiny_view

scrutiny

CI codecov GitHub license Godoc Go Report Card GitHub release

WebUI for smartd S.M.A.R.T monitoring

NOTE: Scrutiny is a Work-in-Progress and still has some rough edges.

Introduction

If you run a server with more than a couple of hard drives, you're probably already familiar with S.M.A.R.T and the smartd daemon. If not, it's an incredible open source project described as the following:

smartd is a daemon that monitors the Self-Monitoring, Analysis and Reporting Technology (SMART) system built into many ATA, IDE and SCSI-3 hard drives. The purpose of SMART is to monitor the reliability of the hard drive and predict drive failures, and to carry out different types of drive self-tests.

Theses S.M.A.R.T hard drive self-tests can help you detect and replace failing hard drives before they cause permanent data loss. However, there's a couple issues with smartd:

  • There are more than a hundred S.M.A.R.T attributes, however smartd does not differentiate between critical and informational metrics
  • smartd does not record S.M.A.R.T attribute history, so it can be hard to determine if an attribute is degrading slowly over time.
  • S.M.A.R.T attribute thresholds are set by the manufacturer. In some cases these thresholds are unset, or are so high that they can only be used to confirm a failed drive, rather than detecting a drive about to fail.
  • smartd is a command line only tool. For head-less servers a web UI would be more valuable.

Scrutiny is a Hard Drive Health Dashboard & Monitoring solution, merging manufacturer provided S.M.A.R.T metrics with real-world failure rates.

Features

Scrutiny is a simple but focused application, with a couple of core features:

  • Web UI Dashboard - focused on Critical metrics
  • smartd integration (no re-inventing the wheel)
  • Auto-detection of all connected hard-drives
  • S.M.A.R.T metric tracking for historical trends
  • Customized thresholds using real world failure rates
  • Temperature tracking
  • Provided as an all-in-one Docker image (but can be installed manually)
  • Future Configurable Alerting/Notifications via Webhooks
  • (Future) Hard Drive performance testing & tracking

Getting Started

RAID/Virtual Drives

Scrutiny uses smartctl --scan to detect devices/drives.

  • All RAID controllers supported by smartctl are automatically supported by Scrutiny.
    • While some RAID controllers support passing through the underlying SMART data to smartctl others do not.
    • In some cases --scan does not correctly detect the device type, returning incomplete SMART data. Scrutiny supports overriding detected device type via the config file: see example.collector.yaml
  • If you use docker, you must pass though the RAID virtual disk to the container using --device (see below)
    • This device may be in /dev/* or /dev/bus/*.
    • If you're unsure, run smartctl --scan on your host, and pass all listed devices to the container.

See docs/TROUBLESHOOTING_DEVICE_COLLECTOR.md for help

Docker

If you're using Docker, getting started is as simple as running the following command:

See docker/example.omnibus.docker-compose.yml for a docker-compose file.

docker run -it --rm -p 8080:8080 -p 8086:8086 \
  -v `pwd`/scrutiny:/opt/scrutiny/config \
  -v `pwd`/influxdb2:/opt/scrutiny/influxdb \
  -v /run/udev:/run/udev:ro \
  --cap-add SYS_RAWIO \
  --device=/dev/sda \
  --device=/dev/sdb \
  --name scrutiny \
  ghcr.io/analogj/scrutiny:master-omnibus
  • /run/udev is necessary to provide the Scrutiny collector with access to your device metadata
  • --cap-add SYS_RAWIO is necessary to allow smartctl permission to query your device SMART data
    • NOTE: If you have NVMe drives, you must add --cap-add SYS_ADMIN as well. See issue #26
  • --device entries are required to ensure that your hard disk devices are accessible within the container.
  • ghcr.io/analogj/scrutiny:master-omnibus is a omnibus image, containing both the webapp server (frontend & api) as well as the S.M.A.R.T metric collector. (see below)

Hub/Spoke Deployment

In addition to the Omnibus image (available under the latest tag) there are 2 other Docker images available:

  • ghcr.io/analogj/scrutiny:master-collector - Contains the Scrutiny data collector, smartctl binary and cron-like scheduler. You can run one collector on each server.
  • ghcr.io/analogj/scrutiny:master-web - Contains the Web UI, API and Database. Only one container necessary

See docker/example.hubspoke.docker-compose.yml for a docker-compose file.

docker run --rm -p 8086:8086 \
  -v `pwd`/influxdb2:/var/lib/influxdb2 \
  --name scrutiny-influxdb \
  influxdb:2.2

docker run --rm -p 8080:8080 \
  -v `pwd`/scrutiny:/opt/scrutiny/config \
  --name scrutiny-web \
  ghcr.io/analogj/scrutiny:master-web

docker run --rm \
  -v /run/udev:/run/udev:ro \
  --cap-add SYS_RAWIO \
  --device=/dev/sda \
  --device=/dev/sdb \
  -e COLLECTOR_API_ENDPOINT=http://SCRUTINY_WEB_IPADDRESS:8080 \
  --name scrutiny-collector \
  ghcr.io/analogj/scrutiny:master-collector

Manual Installation (without-Docker)

While the easiest way to get started with Scrutiny is using Docker, it is possible to run it manually without much work. You can even mix and match, using Docker for one component and a manual installation for the other.

See docs/INSTALL_MANUAL.md for instructions.

Usage

Once scrutiny is running, you can open your browser to http://localhost:8080 and take a look at the dashboard.

If you're using the omnibus image, the collector should already have run, and your dashboard should be populate with every drive that Scrutiny detected. The collector is configured to run once a day, but you can trigger it manually by running the command below.

For users of the docker Hub/Spoke deployment or manual install: initially the dashboard will be empty. After the first collector run, you'll be greeted with a list of all your hard drives and their current smart status.

docker exec scrutiny /opt/scrutiny/bin/scrutiny-collector-metrics run

Configuration

By default Scrutiny looks for its YAML configuration files in /opt/scrutiny/config

There are two configuration files available:

Neither file is required, however if provided, it allows you to configure how Scrutiny functions.

Cron Schedule

Unfortunately the Cron schedule cannot be configured via the collector.yaml (as the collector binary needs to be trigged by a scheduler/cron). However, if you are using the official ghcr.io/analogj/scrutiny:master-collector or ghcr.io/analogj/scrutiny:master-omnibus docker images, you can use the COLLECTOR_CRON_SCHEDULE environmental variable to override the default cron schedule (daily @ midnight - 0 0 * * *).

docker run -e COLLECTOR_CRON_SCHEDULE="0 0 * * *" ...

Notifications

Scrutiny supports sending SMART device failure notifications via the following services:

  • Custom Script (data provided via environmental variables)
  • Email
  • Webhooks
  • Discord
  • Gotify
  • Hangouts
  • IFTTT
  • Join
  • Mattermost
  • Pushbullet
  • Pushover
  • Slack
  • Teams
  • Telegram
  • Tulip

Check the notify.urls section of example.scrutiny.yml for examples.

For more information and troubleshooting, see the TROUBLESHOOTING_NOTIFICATIONS.md file

Testing Notifications

You can test that your notifications are configured correctly by posting an empty payload to the notifications health check API.

curl -X POST http://localhost:8080/api/health/notify

Debug mode & Log Files

Scrutiny provides various methods to change the log level to debug and generate log files.

Web Server/API

You can use environmental variables to enable debug logging and/or log files for the web server:

DEBUG=true
SCRUTINY_LOG_FILE=/tmp/web.log

You can configure the log level and log file in the config file:

log:
  file: '/tmp/web.log'
  level: DEBUG

Or if you're not using docker, you can pass CLI arguments to the web server during startup:

scrutiny start --debug --log-file /tmp/web.log

Collector

You can use environmental variables to enable debug logging and/or log files for the collector:

DEBUG=true
COLLECTOR_LOG_FILE=/tmp/collector.log

Or if you're not using docker, you can pass CLI arguments to the collector during startup:

scrutiny-collector-metrics run --debug --log-file /tmp/collector.log

Supported Architectures

Architecture Name Binaries Docker
amd64
arm-5
arm-6
arm-7 web/collector only. see #236
arm64
freebsd collector only. see #238
macos-amd64
macos-arm64
windows-amd64

Contributing

Please see the CONTRIBUTING.md for instructions for how to develop and contribute to the scrutiny codebase.

Work your magic and then submit a pull request. We love pull requests!

If you find the documentation lacking, help us out and update this README.md. If you don't have the time to work on Scrutiny, but found something we should know about, please submit an issue.

Versioning

We use SemVer for versioning. For the versions available, see the tags on this repository.

Authors

Jason Kulatunga - Initial Development - @AnalogJ

Licenses

Sponsors

Scrutiny is only possible with the help of my Github Sponsors.

They read a simple reddit announcement post and decided to trust & finance a developer they've never met. It's an exciting and incredibly humbling experience.

If you found Scrutiny valuable, please consider supporting my work