Opale

Simple Linux monitoring with history saving.

What Opale is

A Linux laptop and desktop monitoring utility with history saving in a local SQLite database. The utility is build around a client-server architecture, with the server saving monitored items (CPU load, memory usage, battery status...) into the database at a given interval, and answering to clients request. A client can be used to display items into a window manager status bar, or to show a graph of values. Watchers could also be implemented to send alerts or notifications or some pre-defined conditions.

What Opale is not

Opale is not a server-monitoring solution, there are already plenty of these which are battle-tested and available for free. Think more of Opale as the Linux version of iStat.

CLI tool

opale-cli get cpu --percentage

Required Elements to Operate

• Data loading
• SQLite saving
• gRPC communication
• TOML configuration file
• Use XDG path
• Leveled logging
• CLI parameters
• SQLite cleanup entries
• SQLite request

Available Monitors

• CPU
• RAM
• Swap
• Load Average
• Network i/o
• Storage i/o
• Storage status
• Battery
• Screen backlight
• Temperatures
• Network settings (IP, hostname, SSID...)
• Process count
• Kernel version

Features

• Server:
  • Monitor items
  • Save them in SQLite database
  • TOML configuration file
  • Customizable items
  • Customizable retention policy
  • Customizable saving interval
• Simple query client:
  • Query server for a given item
  • Customizable answer format
• Curses client:
  • Show graph of item values
  • Customizable date range
• Notification watcher:
  • Be alerted via native notifications of an event
  • Advanced customization (rules, histeresis...)
• PushOver watcher:
  • Be alerted via PushOver of events