Server Monitor Card

A logbook-style card for Home Assistant that displays a timeline of errors and their severity levels.

This is a personal project and I will not be assisting with issues. I will, however, push any updates or changes that I make.

An adaption of this card to be used with cat tracking

Installation

1. Copy server-monitor-card.js to your config/www/ folder
2. Add the resource to your Lovelace configuration:

resources:
  - url: /local/server-monitor-card.js
    type: module

3. Restart Home Assistant
4. Add the card to your dashboard

Configuration

Field	Required	Description	Default
type	Yes	Must be custom:server-monitor-card	—
error_level_sensor	Yes	Sensor entity that provides the error level (ERROR, CRITICAL, etc.)	—
error_message_sensor	Yes	Sensor entity that provides the error message text	—
title	No	Card title displayed at the top	Server Monitor
max_events	No	Maximum number of events to display	10
max_time_ago	No	Only show events from the last X hours	No limit
accent_color	No	Color for scrollbar and UI accents	Uses error_color
error_color	No	Icon color for ERROR level events	#FFC2A2
critical_color	No	Icon color for CRITICAL level events	#FF9999
unknown_color	No	Icon color for unknown level events	#FFEE99
error_icon	No	MDI icon for ERROR level events	mdi:alert
critical_icon	No	MDI icon for CRITICAL level events	mdi:alert-octagon
unknown_icon	No	MDI icon for unknown level events	mdi:help-circle

Example Configuration

type: custom:server-monitor-card
error_level_sensor: sensor.server_monitor_homeassistant_error_level
error_message_sensor: sensor.server_monitor_homeassistant_last_error
title: Logs
max_events: 3
max_time_ago: 12
accent_color: "#A2D2FF"
error_icon: mdi:alert
critical_icon: mdi:alert-octagon
unknown_icon: mdi:help-circle
grid_options:
  columns: 12
  rows: 8

Features

• Displays error messages in a scrollable timeline
• Color-coded severity levels (Error, Critical, Unknown)
• Customizable icons per severity level
• Filters out "none" and "unknown" placeholder messages
• Collapses consecutive duplicate messages
• Visual editor for easy configuration