acsrujan

#!/bin/bash
yum update -y
yum install wget glibc apache-commons-daemon-jsvc

wget --no-check-certificate --no-cookies --header "Cookie: oraclelicense=accept-securebackup-cookie" http://download.oracle.com/otn-pub/java/jdk/8u152-b16/aa0333dd3019491ca4f6ddbe78cdb6d0/jdk-8u152-linux-x64.rpm

rpm -Uvh jdk-8u152-linux-x64.rpm

alternatives --install /usr/bin/java java /usr/java/jdk1.8.0_152/jre/bin/java 20000
alternatives --install /usr/bin/jar jar /usr/java/jdk1.8.0_152/bin/jar 20000

acsrujan

##### To use: Setup a sns topic like cloudwatch-sns-slack.
### Enter webhook url in SLACK_URL; and change SLACK_CHANNEL;

import boto3
import json
import logging
import os
from base64 import b64decode
from urllib.request import Request, urlopen
from urllib.error import URLError, HTTPError

acsrujan

Mar 18 00:43:36 vieturn nodejs[4474]: [2020-03-18 04:43:36] #033[36mINFO#033[39m "GET /rss/" #033[36m304#033[39m 134ms
Mar 18 00:45:01 vieturn CRON[30621]: (root) CMD (command -v debian-sa1 > /dev/null && debian-sa1 1 1)
Mar 18 00:49:29 vieturn nodejs[4474]: [2020-03-18 04:49:29] #033[36mINFO#033[39m "GET /wintertime-happiness/" #033[32m200#033[39m 162ms
Mar 18 00:50:01 vieturn CRON[30696]: (ghost) CMD ("/home/ghost/.acme.sh"/acme.sh --cron --home "/home/ghost/.acme.sh" > /dev/null)
Mar 18 00:50:08 vieturn sendmail[31140]: My unqualified host name (vieturn) unknown; sleeping for retry
Mar 18 00:50:08 vieturn nodejs[4474]: [2020-03-18 04:50:08] #033[36mINFO#033[39m "GET /.well-known/acme-challenge/Qhmvv-JfesiFKgZVI6xBfScXpgwoTNQaBAk8L7jJmDA" #033[36m301#033[39m 4ms
Mar 18 00:50:08 vieturn nodejs[4474]: [2020-03-18 04:50:08] #033[36mINFO#033[39m "GET /.well-known/acme-challenge/Qhmvv-JfesiFKgZVI6xBfScXpgwoTNQaBAk8L7jJmDA" #033[36m301#033[39m 2ms
Mar 18 00:50:09 vieturn nodejs[4474]: [2020-03-18 04:50:09] #033[3

acsrujan

This is a constantly updated gist with quick commands I've used over the years. A collation for quick reference.

To delete a user from a mac from cli, from another admin user. Typically used when a contract/employment ends.

sudo dscl . delete /Users/<username>
sudo rm -rf /Users/<username>

acsrujan

#!/bin/bash
# Scan for terminated nodes on AWS and remove from Chef

cleanupNodes() {

# get nodes that are terminated via aws-cli
terminated_nodes=$(aws ec2 describe-instances --region=us-east-1 --filters Name=instance-state-name,Values=terminated | grep "InstanceId" | awk -F ":" '{print $2}' | awk -F '"' '{print $2}')

for node in $terminated_nodes;
 do

acsrujan

resource "aws_security_group" "mydatabase_sg" {
    name        = "mydatabase_sg"
    description = "Allows services to talk to mydatabase mysql"
    vpc_id      = "vpc-xxxx"

    ingress {
      from_port = 3306
      to_port   = 3306
      protocol  = "TCP"
      self      = true

acsrujan

#Read more on https://acsrujan.net/launch-bastion-aws

terraform {
  required_providers {
    aws = {
      source  = "hashicorp/aws"
      version = "~> 3.0"
    }
  }
}

acsrujan

provider "aws" {
    access_key = "${var.aws_access_key}"
    secret_key = "${var.aws_secret_key}"
    region = "${var.aws_region}"
}

acsrujan

apiVersion: v1
kind: ServiceAccount
metadata:
  name: fluentd
  namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: ClusterRole
metadata:
  name: fluentd

acsrujan

#!/bin/bash
# This script installs node in ' $HOME/local/node ' directory wihtout sudo

# Store script's filename in $SELF_NAME
SELF_NAME=$(basename $0)

# Prints warning/error $MESSAGE in red foreground color (for [E]rror messages)
red_echo() {
    echo -e "\e[1;31m[E] $SELF_NAME: $MESSAGE\e[0m"
}