LoesterFranco

ModelSim Installation on Ubuntu

Installation requirements

The free version of Modelsim is a 32-bit binary and therefore requires certain 32-bit libraries in order to work correctly. For Ubunutu, install the following packages

sudo dpkg --add-architecture i386
sudo apt-get update
sudo apt-get install libc6:i386 libncurses5:i386 libstdc++6:i386 lib32ncurses6 libxft2 libxft2:i386 libxext6 libxext6:i386 

LoesterFranco

Deploy Kubernetes with Ansible

Requirements

We will need at least two nodes, Ansible, and a kubectl. That's enough to begin.

My ansible role: https://github.com/allanger/kubeadm-ansible-role

I am using Ubuntu 21.04 on all my servers so my Ansible role is written for Debian-based distros. (I will be happy if anybody adds support for other distros)

Preparing system

LoesterFranco

Installing gcc 4.8 and Linuxbrew on CentOS 6

The GCC distributed with CentOS 6 is 4.4.7, which is pretty outdated. I'd like to use gcc 4.8+. Also, when trying to install Linuxbrew you run into a dependency loop where Homebrew's gcc depends on zlib, which depends on gcc. Here's how I solved the problem.

Note: Requires sudo privileges.

Resources:

• http://superuser.com/a/676337/88393: Forum response on using CERN's open Scientific Linux distribution of RHEL's developer toolset.
• http://linux.web.cern.ch/linux/devtoolset/: CERN's developer toolset installation instructions.

LoesterFranco

This is a collection of books that I've researched, scanned the TOCs of, and am currently working through.  The books are selected based on quality of content, reviews, and reccommendations of various 'best of' lists.

The goal of this collection is to promote mastery of generally applicable programming concepts.

Most topics are covered with Python as the primary language due to its conciseness, which is ideal for learning & practicing new concepts with minimal syntactic boilerplate.

JavaScript & Kotlin are listed in the Tooling section; as they allow extension of VS Code and the IntelliJ suite of IDEs, which cover most development needs.

 

LoesterFranco

Instalar Docker 1.12 no Linux:
- sudo su
- curl -fsSL https://experimental.docker.com/ | sh

Instalar Docker-machine v0.8.0 no Linux:
- curl -L https://github.com/docker/machine/releases/download/v0.8.0-rc2/docker-machine-`uname -s`-`uname -m` >/usr/local/bin/docker-machine
- chmod +x /usr/local/bin/docker-machine

Criar VM's com Docker Engine:
- docker-machine create -d virtualbox master

LoesterFranco

#!/bin/sh
ORIGIN="serverA"
MIRROR="serverB"
SYNC_USER="git"
ORIGIN_REPO_ROOT="/home/$SYNC_USER/repositories"
MIRROR_REPO_ROOT="/home/$SYNC_USER/repositories"
LOGFILE=$ORIGIN_REPO_ROOT/gitsync.log

reponame=$(basename $(pwd))

LoesterFranco

Debugging Travis CI locally using Docker

This assumes you've got docker-machine installed, running, and can do docker run

1. Get a debug instance running

    docker run --name travis-debug -dit quay.io/travisci/travis-ruby /sbin/init
    docker exec -it travis-debug bash -l

LoesterFranco

travis-local.md

Preconditions:

1. POSIX or Windows system
2. Install Docker
3. A GitHub repo that already builds on Travis

Postcondition:

LoesterFranco

#!/bin/bash 

echo "I: " 
echo "I: installing dependencies....." 
yum install -y epel-release

yum remove python-docker-py

yum install -y yum-utils device-mapper-persistent-data lvm2 ansible git python3-devel python3-pip python3-docker-py vim-enhanced

LoesterFranco

Generate a private key and a CSR(Certificate Signing Request )

Use this method if you want to use HTTPS (HTTP over TLS) to secure your Apache HTTP or Nginx web server, and you want to use a Certificate Authority (CA) to issue the SSL certificate. The CSR that is generated can be sent to a CA to request the issuance of a CA-signed SSL certificate. If your CA supports SHA-2, add the -sha256 option to sign the CSR with SHA-2.

Creating a 2048-bit private key (domain.key) and a CSR (domain.csr) from scratch:

openssl req -newkey rsa:2048 -nodes -keyout domain.key -out domain.csr

Creating a 2048-bit private key and public key