dhoeric

Google Calendar - Public Holiday Calendars

calendarID from cal.csv can be used at path param in https://developers.google.com/calendar/v3/reference/calendars/get https://developers.google.com/calendar/v3/reference/events/list

dhoeric

#!/bin/bash
# Install docker
apt-get update
apt-get install -y apt-transport-https ca-certificates curl software-properties-common
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
add-apt-repository \
   "deb [arch=amd64] https://download.docker.com/linux/ubuntu \
   $(lsb_release -cs) \
   stable"
apt-get update

dhoeric

Add Name tag by S3 bucket name

S3 bucket usually don't add any tag when creation, which is difficult for us to check the cost spend by each bucket. The add_tags.py basically add/update Name tags to align with S3 bucket name and allow us easier to check the bills.

pipenv shell --three
pipenv install boto3

# Copy add_tags.py into local

dhoeric

import requests
import ipaddress

# Get Cloudflare IP Ranges 
# ref: https://www.cloudflare.com/ips/
def get_cf_ips():
    ips = []
    for urls in [
        "https://www.cloudflare.com/ips-v4",
        "https://www.cloudflare.com/ips-v6"

dhoeric

##
# Backup.py
# ---
# To dump stories, memberships, labels and releases on Pivotal Tracker projects
#
# Dependency:
# pip install requests
#
# Usage:
# python backup.py --token xxx

dhoeric

---
- name: Upgrade ecs services
  hosts: xxx
  user: ec2-user
  tasks:
    - yum:
        name: "ecs-init"
        state: latest
      become: true

dhoeric

Find all log file in staging folder and truncate file size to 0

find . -name "*staging*" | xargs -I % sh -c 'find % -name log -mtime +30 -exec truncate -s 0 {} \;'

Reference: http://www.vionblog.com/linux-delete-files-older-than-x-days/

dhoeric

Check all listening ports in server

$ sudo netstat -nat
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address           Foreign Address         State
tcp        0      0 0.0.0.0:8080            0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN
tcp        0      0 127.0.0.1:5432          0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:25              0.0.0.0:*               LISTEN
tcp6 0 0 :::22 :::* LISTEN

dhoeric

Export vm-based variable to environment

eval `docker-machine env your-vm`

Remove non-tagged docker image

docker rmi $(docker images | grep "^<none>" | awk '{print $3}' | tr '\n' ' ')

dhoeric

# Put into .bashrc, source .bashrc, (max. 1000 requests per day)
# Example: 
# $ ip2geo 8.8.8.8                                                                                                                                                                                                                                       
# {
#   "ip": "8.8.8.8",
#   "hostname": "google-public-dns-a.google.com",
#   "city": "Mountain View",
#   "region": "California",
#   "country": "US",
#   "loc": "37.3860,-122.0838",