Category: Platforms
Linux Docker uses excessive memory
Issue: I have a 16G memory and configured swap as 16G. When start mysql docker, mysqld uses crazy amount of memory and make the system…
Setup Gitlab & Jenkins on Raspberry Pi 2
Objective: Installing and configuring Gitlab and Jenkins on Raspberry Pi 2 Background: I currently have extra Raspberry Pi and would like to use for…
[따라하기] 아두이노 기초 – 초음파센서 사용하기 by ODIY 한국과학창의재단
[따라하기] 아두이노 기초 – 초음파센서 사용하기 by ODIY 한국과학창의재단 Ardunio – Ultrasound sensor with LED #define TRIG 2…
[따라하기] 아두이노 기초 – LED와 버튼 제어하기 by ODIY 한국과학창의재단
[따라하기] 아두이노 기초 – LED와 버튼 제어하기 by ODIY 한국과학창의재단 Arduino – LED Wave #define DELAY_TIME 100 void setup()…
Time Clock Management System developed with Yii2 REST API + Angular 2 + Docker
Time Clock Management System (Yii2 REST API + Angular 2 + Docker) Source Repo: https://github.com/chrisleekr/time-clock-management-system-yii2-rest-api-angular2-docker This is a personal project for learning Angular 2.…
Docker 1.12 – Deploying Docker Services within Docker Swarm Mode and Docker Machine
Docker 1.12 – Deploying Docker Services within Docker Swarm Mode and Docker Machine Source Repo: https://github.com/chrisleekr/docker-swarm-scalable-web-application-architecture This is proof-of-concept project to set up Docker Swarm…
Raspberry pi에 Let’s Encrypt SSL 설치하기
Raspberry Pi의 IP를 알아낸다음에 Router에서 DMZ를 설정하여 외부 IP로 접속할 경우 Raspberry Pi로 접근이 되도록 한다. Raspberry Pi에 아파치를 설치한다. 설치방법: https://www.raspberrypi.org/documentation/remote-access/web-server/apache.md 외부 IP로 접속하여 Apache…
Secure Raspberry Pi with iptables, PSAD, Fail2ban and OSSEC
Disable ping $ echo 1 > /proc/sys/net/ipv4/icmp_echo_ignore_all Install iptables and iptables-persistent $ sudo apt-get install iptables iptables-persistent $ sudo service iptables-persistent start Create…
Docker Tor+Proxy
Run tor and proxy server in docker and set Chrome browser to send all traffics to docker tor proxy server Environment: Windows 7 Docker Toolbox – https://www.docker.com/products/docker-toolbox…
Raspberry Pi – Push Button + LED
import RPi.GPIO as GPIO from time import sleep PIN18 = 12 PIN25 = 22 GPIO.setmode(GPIO.BOARD) GPIO.setup(PIN25, GPIO.IN) GPIO.setup(PIN18, GPIO.OUT) LEDON = False while 1:…
Python – ImportError: No module named django.utils
When I follow the tutorial – App Engine Series #4 – I got this error for Ajax.py: ImportError: No module named django.utils According to this article, Python…
Python – ImportError: No module named
When I follow the tutorial – App Engine Series #4 – I kept getting the error like below: ImportError: No module named controllers It is caused…
Google App Engine Tutorial – Datastore – 한글 입력시 Internal Server Error 나는 현상
Google App Engine의 Datastore 튜토리얼 소스를 실행시 한글을 방명록 이름(Guestbook name)필드에 입력하면 다음과 같은 에러가 발생한다. Traceback (most recent call last): File “/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2-2.5.2/webapp2.py”, line 1535,…
Python – 한글로 주석 남기면 실행 안되는 현상(cannot execute app if write Korean as comment)
한글로 코멘트를 남겼는데 다음과 같은 서버 에러가 발생했다. HTTP Error 500 (Internal Server Error): An unexpected condition was encountered while the server was attempting to…
Sample Code from Developing and deploying an application on Google App Engine
In the video, it provides the code as below #!/usr/bin/env python import os import wsgiref.handlers from google.appengine.ext import webapp from google.appengine.ext.webapp import template class MyHandler(webapp.RequestHandler):…
AIR for TV
Article Link: http://learn.adobe.com/wiki/display/airquestions/AIR+for+TV What tools do developers use to create AIR 2.5.1 apps for TVs? Developers can use the following tools: AIR 2.6 SDK Flash…
Samsung TV SDK 2.5 – Javascript Error keyCode
Samsung SDK 2.5 editor provides ‘Basic Javascript Project’; however, it contains Reference Error when you launch first time like below: Error Detail : ReferenceError:…
Samsung TV Application SDK UX Guideline
Samsung_TV_Application_SDK_UX_Guideline_1.0 – Version 1.0 Points 1. Design Principles – TV screen should not contain too much information. – Accurate navigation for user operation – Actions…
Running Samsung TV Apps SDK on Boot Camp
I have windows running bootcamp and tried to launch Samsung TV Apps SDK(IDE); however, it crashes windows every launch. Tested so far; but crashed all…