Tech Rescue

Hector Perez

Install and run WSO2 4.0.0 API Manager with Docker

1. Pull docker images sudo docker pull wso2/wso2am:4.0.0 2. Run the API Manager sudo docker run -it -d -p 8280:8280 -p 8243:8243 -p 9443:9443 --name wso2-api-manager wso2/wso2am:4.0.0 3. Test if everything is OK curl http://run.mocky.io/v2/

Photo frame with PIMORONI Inky Impression 7 Color ePaper and Raspberry PI Zero WH

The goal here is to run a script that will select a random image and show it in the PIMORONI Inky Impression 7 Color ePaper every determined period of time. I assume python3 is already installed in the machine. The Pimorony Inky Impression libraries and examples can be downloaded from

Clear and show image in PIMORONI Inky Impression 7 Color Display with python

The following code is a combination of the examples provided by PIMORONI. #!/usr/bin/env python3 # File Name: show.py # # Usage 1: Show a selected image # # python3 show.py foto1.jpg # python3 show.py /home/pi/foto1.jpg # # Usage 2: Show a random image # # ls /home/pi/*.jpg | sort -R

Install Kong OSS with PostgreSQL in Ubuntu Mate Impish 21.10 in Raspberry PI 4

1. Download docker images sudo docker pull arm64v8/kong sudo docker pull arm64v8/postgres 2. Start a PostgreSQL container sudo docker run -d --name kong-database \ -p 5432:5432 \ -e "POSTGRES_USER=kong" \ -e "POSTGRES_DB=kong" \ -e "POSTGRES_PASSWORD=kong" \ arm64v8/postgres:9.6 3. Run the database migrations with

PM2 command to run ecosystem file

Once the file is properly configured in JSON format, run this command: pm2 start ecosystem.json The output should be similar to this: [PM2] Applying action restartProcessId on app [x509](ids: [ 0 ]) [PM2] [x509](0) ✓ ┌──────────────────────────────────────────────────────────────────────────────────────────────────────────────── │ id │ name │ namespace │ version │ mode │ pid │ uptime │ ↺ │ status │ cpu │ mem │ user │ watching │ ├───────────────────────────────────────────────

SCRYPT demo in Node.JS v15

SCRYPT is yet another password-based key derivation function that allows you to tweak its arguments in order to discourage brute-force attacks. Basically you can adjust the options to make it slower, and therefore brute-force attacks will need more time to be performed. Here is an example of how to use

Password Based Key Derivation Function 2 (PBKDF2) demo in Node.JS v15

Password Based Key Derivation Function 2 (PBKDF2) demo in Node.JS v15

A quick demo on how to use Password Based Key Derivation Function 2 (PBKDF2) to generate keys and IVs to use with all different ciphers available in Node.JS v15.x. const crypto = require('crypto'); const PASSWORD = "My_Secret_Password"; // Could be the password/key used to encrypt a message