Gmanweb

// A* for libgdx that is simple but optimized.

package test;

import com.badlogic.gdx.ApplicationAdapter;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.backends.lwjgl.LwjglApplication;
import com.badlogic.gdx.graphics.Color;
import com.badlogic.gdx.graphics.GL10;
import com.badlogic.gdx.graphics.glutils.ShapeRenderer;

Gmanweb

Here I will go over how to setup Logstash, Kibana, Redis, and Elasticsearch in an EC2 environment behind a public Load Balancer. The setup I'll be doing will have:

1) One server for Redis to act as the broker/buffer to receive logs.
2) One server using Logstash receive logs from Redis and parse/index them over to Elasticsearch.
3) One server for Elasticsearch to receive logs and Kibana to view them in a browser.
4) One server to send the logs using logstash.
5) One public Load Balancer.

This may seem like a lot but follow these steps and you'll get the hang of it :)
What you will need:

Gmanweb

#Kafka - Messaging Basics This assumes you are starting fresh and have no existing Kafka or ZooKeeper data. See http://kafka.apache.org/documentation.html#quickstart for more details.

##Install Java

sudo apt-get install python-software-properties
sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update
sudo apt-get install oracle-java8-installer

Gmanweb

What I actually did

/etc/security/limits.conf

elasticsearch hard memlock 100000

/etc/default/elasticsearch

Gmanweb

1. Delete all containers

    $ docker ps -q -a | xargs docker rm
   

-q prints only the container IDs -a prints all containers

Notice that it uses xargs to issue a remove container command for each container ID

2. Delete all untagged images

Gmanweb

#BECOME SUPER USER#

sudo -i

#add sublime to repository#

add-apt-repository ppa:webupd8team/sublime-text-2

#update#

Gmanweb

#!/bin/bash

# Initialize MySQL database.
# ADD this file into the container via Dockerfile.
# Assuming you specify a VOLUME ["/var/lib/mysql"] or `-v /var/lib/mysql` on the `docker run` command…
# Once built, do e.g. `docker run your_image /path/to/docker-mysql-initialize.sh`
# Again, make sure MySQL is persisting data outside the container for this to have any effect.

set -e
set -x

Gmanweb

This component shows a smaller image or a base64 encoded image till the bigger version is fully loaded.
Added a blur/fade effect for the transition.

Gmanweb

# Composition of the containers

owncloud:
  image: owncloud
  ports:
   - 80:80
  volumes_from:
    - owncloud-data
  links:
   - postgres:owncloud-db

Gmanweb

Docker - How to cleanup (unused) resources

Once in a while, you may need to cleanup resources (containers, volumes, images, networks) ...

delete volumes

// see: https://github.com/chadoe/docker-cleanup-volumes

$ docker volume rm $(docker volume ls -qf dangling=true)

$ docker volume ls -qf dangling=true | xargs -r docker volume rm