harshadyeola

package main

import (
	"fmt"
	"os"
	"os/exec"
	"syscall"
)

func main() {

harshadyeola

openssl genrsa -out CAroot.key 2048
openssl req -new -key CAroot.key -out CAroot.csr # CN should be different from the certificates below
openssl req -x509 -days 1825 -key CAroot.key -in CAroot.csr -out CAroot.crt
cat CAroot.crt CAroot.key > CAroot.pem

openssl genrsa -out mongod.key 2048
openssl req -new -key mongod.key -out mongod.csr
openssl x509 -req -days 1825 -in mongod.csr -CA CAroot.pem -CAkey CAroot.key -CAcreateserial -out mongod.crt
cat mongod.crt mongod.key > mongod.pem

harshadyeola

.deploy_job: &deploy_job
  before_script:
    # Install ssh-agent if not already installed, it is required by Docker.
    # (change apt-get to yum if you use a CentOS-based image)
    - 'which ssh-agent || ( apt-get update -y && apt-get install openssh-client -y ) || (apk update && apk add openssh-client)'

    # Run ssh-agent (inside the build environment)
    - eval $(ssh-agent -s)

    # Add the SSH key stored in SSH_PRIVATE_KEY variable to the agent store

harshadyeola

A few show tricks to find slow queries in mongodb

Enable profiling

First, you have to enable profiling

> db.setProfilingLevel(1)

Now let it run for a while. It collects the slow queries ( > 100ms) into a capped collections, so queries go in and if it's full, old queries go out, so don't be surprised that it's a moving target...

harshadyeola

#!/bin/bash

# Author: Erik Kristensen
# Email: erik@erikkristensen.com
# License: MIT
# Nagios Usage: check_nrpe!check_docker_container!_container_id_
# Usage: ./check_docker_container.sh _container_id_
#
# The script checks if a container is running.
#   OK - running

harshadyeola

import argparse
import boto.sqs
import json
import os

parser = argparse.ArgumentParser(description='Saves all messages from an AWS SQS queue into a folder.')

parser.add_argument(
    '-q', '--queue', dest='queue', type=str, required=True,
    help='The name of the AWS SQS queue to save.')

harshadyeola

# Example Dockerfile
FROM hello-world

harshadyeola

sudo apt-get update && \
sudo apt-get install -y apt-transport-https ca-certificates && \
sudo apt-key adv --keyserver hkp://ha.pool.sks-keyservers.net:80 --recv-keys 58118E89F3A912897C070ADBF76221572C52609D  && \
echo "deb https://apt.dockerproject.org/repo ubuntu-xenial main" | sudo tee /etc/apt/sources.list.d/docker.list && \
sudo apt-get update && \
sudo apt-get install -y docker-engine && \
sudo service docker start && \
curl -L "https://github.com/docker/compose/releases/download/1.8.1/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose && \
chmod +x /usr/local/bin/docker-compose && \
docker-compose —-version

harshadyeola

byte-size tuts

by alexander white ©

golang tutorials

• 0 - installation on a Mac
• 1 - packages
• 2 - remote packages
• 3 - variable syntax
• 4 - functions syntax
• 5 - loops syntax

harshadyeola

#/bin/bash

##########################################################
### INTRODUCTION
##########################################################
: '
Install and configure R (Redis) + ELK server from scratch on CentOS 6.5.

* Logstash version 1.4.2
* Elasticsearch version 1.3.2