Sysmon

From Phospher

Contents 1 Introduction 2 Requirements 3 Screenshots 4 Live System 5 ToDo 6 License

Introduction

Sysmon (Systems Monitor) started off as a desire I had to see the current status of servers I host out of my garage. Sysmon quickly turned into something much more than an ICMP monitor. I wanted the ability to navigate to a website and quickly determine the health of my hosts. Sysmon uses 'colors' to depict system status. Green=good, Yellow=warning and Red=uh-oh. If you're color-blind, show an interest and I'll add text warnings.

The majority of sysmon is written in PHP using an sqlite3 database. All ./admin_tools/* scirpts are written in shell (BASH).

Requirements

• Supported browsers notes:
  • Google Chrome 100% (recommended) (Tested on Linux, Android and Windows) >= 8.0
  • Konqueror 100% (Tested on Linux/KDE 4.5.5, older versions may work).
  • Firefox 100% (Tested on Linux and Windows, < 4.0 expands hover data to main screen, really messed up). >= 4.0
  • Internet Explorer 100% (6 and 7 work, but they don't display the hover windows). >= 8.0
  • Safari 100% (Tested on Windows 5.0.4, older versions may work).
  • Opera 11.00 (Tested on Linux and Windows, works, but does not display the hover windows. Hopefully future releases will work).
  • Opera 11.61 100% (Tested on Linux, works perfectly) >= 11.61

Sysmon server requires:

• Linux (mine is running on CentOS 6.2 i386 and CentOS 5.1 x86_64, it should run on any OS that supports these services.)
• Apache
• PHP
• PHP-PDO module
• SQLite3

Sysmon client requires:

• Linux (I don't have a need for any other OS, if interest is shown, I will consider porting the client to multiple platforms)
• bc
• bash
• curl
• sed
• grep
• netstat (in net-tools package)
• ifconfig (in net-tools package)
• cut
• mpstat (in sysstat package)

Sysmon currently watches:

• The Host icon will turn colors if the host hasn't checked in within 120 or 300 seconds.
  • < 120 seconds(green), >= 120 seconds(yellow) and >= 300 seconds(red)

• Memory utilization (total, used, free)
  • < 75%(green), >= 75%(yellow) and >= 95%(red)

• CPU (model, core count, clock speed, load percentage)
  • < 75%(green), >= 75%(yellow) and >= 95%(red)

• Storage (total, used, free)
  • < 75%(green), >= 75%(yellow) and >= 95%(red) (per volume)

• Services (running or not)
  • exit 0 (green) and exit 1 (red)

A monitor will turn blue if sysmon is waiting for a client push.

Screenshots

Live System

You can view my live sysmon installation here.
You can download the sysmon server package from here.

There are a number of changes that I will be making over the next few weeks.

ToDo

• Polish/create an admin web interface
• Polish scripts under admin_tools/
• Create auto-updater script which can be run in cron that will download sysmon binaries from my servers
• Create email notifier daemon
• Roles?

License

Sysmon is licensed under the GPLv2 (GNU Public License version 2).