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Top Forums UNIX for Advanced & Expert Users Nearly Random, Uncorrelated Server Load Average Spikes Post 303044156 by Neo on Saturday 15th of February 2020 10:14:42 PM
Old 02-15-2020
So, let's try this:

Code:
iptables -A INPUT -s 117.144.138.130/24 -j DROP  #  rogue chinese bot
iptables -A INPUT -s 116.232.49.231/24 -j DROP  #  rogue chinese bot

Empty the "trap" again and block two Chinese subnetworks with rouge, unidentified bot activity.

Honestly, this is starting to "annoy me a lot" in the possibility that these performance hits, and all the time I am spending to find the cause of these hits / spikes, wasting valuable "time in life" is related to rouge, unidentified bots from Chinese networks.

If this continues, I am going to start blocking Chinese networks at the /16 and /8 levels (entire networks).

First, let's see if this is indeed the main source of these spikes. As we all know from situational awareness theory and the famous OODA loop by John Boyd.
  1. OBSERVE
  2. ORIENT
  3. DECIDE
  4. ACT

Already, we have enough information to ACT. But lets continue to OBSERVE Smilie

The loop goes on ... and on ....

Please note that we cannot trust apache2 modules and other third-party software to automatically block IPs, because this can results in blocking the "good bots" which are important for search engine optimization and site traffic.

That means, if this is confirmed that these kinds of bots continue to be the cause of problems, then I will need to DECIDE how to deal with this situation moving forward. I think point in time, I am going to continue to "trap and trace" before making a decision. However, it does seem, at this point, that rouge, unidentified bots from Chinese networks are causing performance issues and need to be "dealt with".

If anyone else has experienced similar issues and has an interesting potential solution to this problem, please reply and share your ideas.

Thanks!

PS: I may consider automating this, as follows:
  1. Capture network session activity when one minute load average exceeds a threshold (as I am doing now).
  2. Filter results captured in the DB based on "hitcount" and "country".
  3. If the "hitcount" exceeds a certain threshold and "country" is in an array of "known to have rouge bots countries".
  4. THEN BLOCK the ip_address/24
 

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FREEDROIDRPG(6) 					      User's Reference Manual						   FREEDROIDRPG(6)

NAME
freedroidRPG -- a futuristic immersive RPG about fighting bots SYNOPSIS
freedroidRPG [-f | --fullscreen | -w | --window] [-r | --resolution] [-q | --nosound] [-n | --no_open_gl] DESCRIPTION
FreedroidRPG tells the story of a world destroyed by a conflict between robots and their human masters. Play as Tux in a quest to save the world from the murderous rebel bots who know no mercy. You get to choose which path you wish to follow, and freedom of choice is everywhere in the game. FreedroidRPG features a real time combat system with melee and ranged weapons, fairly similar to the proprietary game Diablo. There is an innovative system of programs that can be run in order to take control of enemy robots, alter their behavior, or improve one's characteris- tics. You can use over 150 different kinds of items and fight countless enemies on your way to your destiny. An advanced dialog system pro- vides story background and immersive role playing situations. Gameplay Please see the README or the tutorial in the game for more details. Updates Periodically we release updated versions of FreedroidRPG with expanded plot, requested features, and other improvements. Please check the FreedroidRPG Homepage: http://www.freedroid.org for the most updated versions of the game. OPTIONS
-h | --help List command-line options. -v | --version Prints out FreedroidRPG version information. -q | --nosound Suppress sound output. -f | --fullscreen Work in full screen mode. Note that fullscreen or window mode can also be toggled from within the game via the options menu. -w | --window Start FreedroidRPG in a window rather than using full screen mode. -n | --no_open_gl Use SDL rendering rather than OpenGL. -r Y | --resolution= Y Selects a resolution to start the game in. -r 99 lists common resolutions. Resolutions can also be set in-game. -e | --editor Skips the main menu and opens up the level editor. -l character-name | --load character-name Skip the main menu and load the saved game. The parameter character-name should be saved game name. FILES
$HOME/.freedroid_rpg/config The file containing all configuration settings of this user. $HOME/.freedroid_rpg/*.savegame Saved games for the characters. $HOME/.freedroid_rpg/*.thumbnail.bmp Thumbnail images of the characters. $HOME/.freedroid_rpg/*.shp Game state for the saved games. BUGS
We make every effort to release stable versions of FreedroidRPG. However we're sure that there are still some bugs here and there. Please see the FAQ in the README for common issues. If you encounter any problems or bugs, please contact us: IRC #freedroid on irc.freenode.net Mailing List freedroid-discussion@lists.sourceforge.net Bug tracker FreedroidRPG Bug Tracker: http://bugs.freedroid.org SEE ALSO
freedroid(6) AUTHORS
freedroidRPG was written by FreedroidRPG Development Team <freedroid-discussion@lists.sourceforge.net> led by Arthur Huillet. Visit us at the FreedroidRPG Homepage: http://www.freedroid.org for updates or if you'd like to help. BSD
February 22, 2011 BSD
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