anryko

Start container from ansible git root:

docker run \
    -it \
    -v $PWD:/srv \
    -v /var/run/docker.sock:/var/run/docker.sock \
    -w /srv \
    fedora bash

anryko

iptables -t filter -I OUTPUT -d 169.254.169.254 -j EC2
iptables -N EC2
iptables -A EC2 -m owner --uid-owner root -d 169.254.169.254 -j ACCEPT
iptables -A EC2 -j REJECT --reject-with icmp-host-unreachable

anryko

# Get AWS ASG tags in one object per ASG.

aws autoscaling describe-auto-scaling-groups \
  | jq -r '.AutoScalingGroups[].Tags | reduce .[] as $n ({}; . * {($n.Key): $n.Value})'

anryko

AWS S3 bucket and IAM policy recipes

• Anonymous GET access
• Anonymous GET access - match HTTP referrer
• Full access for specific IAM user/role
• GET/PUT/DELETE access to specific path within a bucket
• Restricted LIST & PUT/DELETE access to specific path within a bucket
• Full access (and S3 console) for specific IAM users
• Reference

Anonymous GET access

anryko

- set_fact:
    set_filter: 'aws_' 

# set_envs: [{ 'AWS_PROFILE': <value>}, {'AWS_REGION': <value>}, ...]
- set_fact:
    set_envs: "{{ set_envs | d([]) | union([{ item.split('=', 1)[0]: item.split('=', 1)[1] }]) }}"
  when: item.startswith(set_filter | upper)
  with_items: "{{ lookup('pipe', 'env').split('\n') }}"
 

anryko

# x → {'a': 111, 'b': 222, 'c': 333}
- set_fact:
    x: "{{ x | d({}) | combine({item.0: item.1}) }}"
  with_together:
    - ['a', 'b', 'c']
    - [111, 222, 333]
    
 # y → [{'a':123}, {'b':456}, {'c':789}]
- set_fact:
    y: "{{ y | d([]) | union([{item.0: item.1}]) }}"

anryko

---
- name: test
  hosts: localhost
  connection: local
  gather_facts: False

  vars:
    listeners:
    - Protocol: HTTP
      # Port: 80

anryko

Change dir to source directory and run:

$ docker run \
    -it \
    --rm \
    --name gcc \
    -v $PWD:/mnt \
    -p 9090:9090 \
    gcc bash -c 'cd /mnt && make && ./a.out'
  

anryko

#!/usr/bin/env bash
# by: anryko
# date: 2017.03.12
# description: Script to backup mysql databases on Debian based OS

set -e
set -o pipefail

umask 0077
trap cleanup ERR INT TERM EXIT

anryko

obj-m += lkm_hello1.o
KDIR ?= /lib/modules/$(shell uname -r)/build

all:
	make -C $(KDIR) M=$(PWD) modules

clean:
	make -C $(KDIR) M=$(PWD) clean