Minecraft Server Automation ... For Vanilla
CobbleBot is a rails application and external scripting tool that interacts with (vanilla) Minecraft SMP. It primarily uses the server logs to detect events and can be configured to send commands back to the server with RCON and/or a multiplexor.
There is also an optional IRC bot that allows players to interact.
$ mkdir cobblebot
$ cd cobblebot
$ git clone https://github.com/inertia186/cobblebot.git .
$ bundle install
$ rake db:migrate
$ rake db:seed
$ rails s
$ open http://localhost:3000/admin/sessions/new
Now, use the default admin password to log in: 123456
Click on the Admin drop-down, and select Preferences.
Edit the web_admin_password key and change it to something better.
Edit the path_to_server key and change it to the absolute path of your Minecraft Server.
Click on the Admin drop-down, and select Server Properties. If it loads, then you are correctly configured.
Now install Redis so that you can run the monitors in the background using Resque. This allows CobbleBot to process the server log. Installation of Redis depends on your platform.
Mac OS X with MacPorts:
$ sudo port install redis
$ sudo port load redis
Ubuntu:
$ apt-get install redis-server
$ redis-server /etc/redis/redis.conf
Once Redis is up and running, start the CobbleBot scheduler and workers:
$ BACKGROUND=yes RAILS_ENV='development' rake resque:scheduler
$ TERM_CHILD=1 RAILS_ENV='development' QUEUE='minecraft_watchdog' rake resque:work
$ TERM_CHILD=1 RAILS_ENV='development' QUEUE='minecraft_server_log_monitor' rake resque:work
If you've configured IRC, you need to start a worker for that as well:
$ TERM_CHILD=1 RAILS_ENV='development' QUEUE='irc_bot' rake resque:work
If you like to use tmux, you can manage the various CobbleBot processes in a single tmux console. Here's one way to go about that:
#!/bin/bash
BASE="$HOME/cobblebot"
cd $BASE
tmux start-server
tmux new-session -d -s CobbleBot -n Project
tmux new-window -t CobbleBot:1 -n resque-scheduler
tmux new-window -t CobbleBot:2 -n watchdog
tmux new-window -t CobbleBot:3 -n monitor
tmux new-window -t CobbleBot:4 -n irc
tmux new-window -t CobbleBot:5 -n server
tmux new-window -t CobbleBot:6 -n dev-log
tmux send-keys -t CobbleBot:0 "cd $BASE;" C-m
tmux send-keys -t CobbleBot:1 "cd $BASE; RAILS_ENV='development' rake resque:scheduler" C-m
tmux send-keys -t CobbleBot:2 "cd $BASE; TERM_CHILD=1 RAILS_ENV='development' QUEUE='minecraft_watchdog' rake resque:work" C-m
tmux send-keys -t CobbleBot:3 "cd $BASE; TERM_CHILD=1 RAILS_ENV='development' QUEUE='minecraft_server_log_monitor' rake resque:work" C-m
tmux send-keys -t CobbleBot:4 "cd $BASE; TERM_CHILD=1 RAILS_ENV='development' QUEUE='irc_bot' rake resque:work" C-m
tmux send-keys -t CobbleBot:5 "sudo su steve" C-m
tmux send-keys -t CobbleBot:6 "cd $BASE; tail -200 -f log/development.log" C-m
tmux select-window -t CobbleBot:0
tmux attach-session -t CobbleBot
Please note, the CobbleBot:5 window is intended to kick off the actual Minecraft Server. If you use the same user as CobbleBot to run your Minecraft Server, instead of sudo su steve you can just use cd /path/to/minecraft_server.
Once CobbleBot:5 is there, you can execute the Minecraft Server:
$ java -jar minecraft_server.jar
Once all of the process are running, you should be able to log into your Minecraft Server and interact with CobbleBot. For example, in the Minecraft client, type:
@server version
If IRC is enabled, players may send messages to IRC by typing, for example:
@irc Hello IRC!
In IRC, messages can be sent back to the game by typing, for example:
@cobblebot say Hello, Minecraft!
... or ...
@cb say Hello, Minecraft!
Enjoy!
If you're having trouble with nokogiri, you might have some library conflicts. One solution:
$ bundle config build.nokogiri --use-system-libraries
If you're having trouble with better_errors, you may need to update to a more recent version of ruby. I suggest rvm. If you have rvm, try:
$ rvm install 2.1.5
Normally, migrations are simple. The simple rake db:migrate should work but make sure the rails server is stopped. Also stop the resque scheduler and workers. Once everything has been stopped:
$ cd cobblebot
$ git pull
$ rake db:migrate
$ rake db:seed
Now you can start rails and resque.
Note, if you have trouble with the simple migrate, use the rake export commands to save your records and drop the database and import. If do you see errors during migration, what follows is a more expanded method of migrating the database.
In early stages of development, migrations were non-cumulative. This meant that early migrations required you to drop the database and start from scratch. To mitigate this, CobbleBot can export data to CSV for re-import after the database is recreated. As development progressed toward beta, migrations became cumulative so that export/import is not required during update.
To export CobbleBot's database, make sure the rails server is stopped. Also stop the resque scheduler and workers. Once everything has been stopped:
$ cd cobblebot
$ rake cobblebot:export:preferences > preferences.csv
$ rake cobblebot:export:players > players.csv
$ rake cobblebot:export:links > links.csv
$ rake cobblebot:export:server_callbacks > server_callbacks.csv
$ rake cobblebot:export:messages > messages.csv
$ rake cobblebot:export:ips > ips.csv
$ rake cobblebot:export:mutes > mutes.csv
$ rake cobblebot:export:reputations > reputations.csv
$ rake db:migrate
$ rake db:seed
You can import your data as follows:
$ rake db:drop # only needed if previous migrations fail
$ rake db:migrate
$ cat preferences.csv | rake cobblebot:import:preferences
$ cat players.csv | rake cobblebot:import:players
$ cat links.csv | rake cobblebot:import:links
$ cat server_callbacks.csv | rake cobblebot:import:server_callbacks
$ cat messages.csv | rake cobblebot:import:messages
$ cat ips.csv | rake cobblebot:import:ips
$ cat mutes.csv | rake cobblebot:import:mutes
$ cat reputations.csv | rake cobblebot:reputations:mutes
$ rake db:seed
Now you can start rails and resque.
The default DBMS for CobbleBot is SQLite3. If you are getting IO errors or busy timeouts, this is due to the fact that CobbleBot is running multiple processes and SQLite3 isn't the right fit. For light traffic servers, these errors are mitigated but not totally eliminated.
To avoid the problems associated with SQLite3, you should consider Postgres or MySQL.
Before you switch away from SQLite3, make sure you export your current database to CSV (see export steps above).
To enable Postgres, you need to change the following in database.yml (as diff):
development:
- <<: *default
- database: db/development.sqlite3
+ adapter: postgresql
+ encoding: unicode
+ database: cobblebot_development
+ pool: 15
+ username: cobblebot
+ password:
Next, you need to create the postgres user and databases (assuming you've already installed Postgres):
$ createuser -d -s cobblebot
$ createdb -O cobblebot cobblebot_development
$ createdb -O cobblebot cobblebot_test
Now, you can import the CSV data into Postgres (see import steps above).
Note, on Postgres, if you're attempting to drop the database and recreate it, you may need to close all existing connections first, e.g.:
$ psql cobblebot_development -c "\
SELECT pg_terminate_backend(pg_stat_activity.pid) FROM pg_stat_activity\
WHERE pg_stat_activity.datname = 'cobblebot_development'\
AND pid <> pg_backend_pid();"
$ rake db:drop
$ createdb -O cobblebot cobblebot_development
CobbleBot itself does not rely directly upon any Java API. It does not require modifications to the server jar. There are no plugins to Minecraft itself. This means CobbleBot should (theoretically) run even in snapshots.
CobbleBot is limited to information that can be gathered from the server logs. This means that most things a player does cannot be detected. This also means that all interaction with CobbleBot will be public, for example, using @server in chat. It can be configured to respond privately.
CobbleBot can be configured to trigger sound events. To enable the default sounds, make sure your server.properties points at a copy of the default CobbleBot resource pack:
resource-pack=https\://www.dropbox.com/s/uq143k8dlftccla/swim_resource_pack.zip?dl\=1
To test the resource pack on the default configuration, type the command in the Minecraft client:
@server soundcheck
If you're using CobbleBot, I'd love to hear from you. Drop me a line and tell me what you think!
I don't believe in intellectual "property". If you do, consider CobbleBot as licensed under a Creative Commons