Cherie - Server Monitoring System (SMS)

Requirements

• agent/controller-based architecture
  • agent (daemon):
    • must be written in C/C++ to be as thin as possible
    • fetch data directly via libmysqlclient or via the master's HTTP API
    • performs scheduled tests and reports results to the master
    • pings the controller as a proof of being healthy (maybe by updating its Node db record)
  • controller (daemon):
    • maybe written in Ruby + ActiveRecord
    • creates node error reports in case an agent did not ping after some time.
    • sends out the reports as generated by the agents (email, SMS, ...)
  • web ui:
    • may be written in Ruby/Rails with ActiveRecord for models
    • allows the user to fully control
    • login control via LDAP ideally
• manage custom inlined tests in LUA/Ruby/Bash
  • test code shall keep changelog history
• manage groups (of nodes / tests)
• associate tests (with groups / nodes)
• manage scheduless - when a test has to run (Zeitplan)
  • run test on: mon/tue/wed/thu/fri/sat/sun
  • at time: HH:MM
  • every HH:MM times
  • manage reports (for tests)
• manage constraints, when a test is not to run

Models

• Node:
  • uuid: string
  • name: string
  • ipaddress: string
  • last_heartbeat_at: datetime
  • last_report_at: datetime
  • enabled: bool
  • removed: bool
• Test:
  • enabled: bool
  • language: string (bash, ruby, lua)
  • code: text
• Group:
  • name: string
  • description: text
  • enabled: bool = true
• GroupItem:
  • group_id
  • ref_id
  • ref_type (Node, Test)
• Association:
  • node_id
  • ref_id
  • ref_type (Test, Group)
  • enabled = true
• TestResult:
  • test_id
  • exit_code (a value of 0 means success, everything else is a failure)
  • output: text (program output, stdout + stderr)
• Schedule:
  • minute: 0-59
  • hour: 9-23
  • day of month: 1-31
  • month: 0-12 (or names, see below)
  • day of week: 0-7 (0 or 7 is Sun, or use names)
• Constraint:
  • ref_id
  • ref_type (Test, Group, Node)
  • from: datetime
  • to: datetime
  • reason: string
• Comment:

  • text: string

  • ref_id

  • ref_type (Node, Test, Group, Constraint)

    vim:syntax=markdown:ts=2:sw=2:et