chaspy

How to add a new lint to tflint-ruleset-aws

tflint の aws 向けの rule set は pluggable になっており、新規 rule 追加がしやすくなっています。本発表では DB Instance の engine が valid のテストを追加する PR を元に、Contribution の方法と、その lint の仕組みを解説します。

Who am I

Lead Software Engineer, Site Reliability at Quipper

• Twitter: @chaspy_
• GitHub: @chaspy

chaspy

# Retry a command up to a specific numer of times until it exits successfully,
# with exponential back off.
#
#  $ retry 5 echo Hello
#  Hello
#
#  $ retry 5 false
#  Retry 1/5 exited 1, retrying in 1 seconds...
#  Retry 2/5 exited 1, retrying in 2 seconds...
#  Retry 3/5 exited 1, retrying in 4 seconds...

chaspy

#!/bin/bash
# docker for ubuntu 18.04
# https://docs.docker.com/install/linux/docker-ce/ubuntu/
sudo apt-get remove docker docker-engine docker.io
sudo apt-get install \
    apt-transport-https \
    ca-certificates \
    curl \
    software-properties-common -y
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -

chaspy

#!/bin/bash
set -eux
set -o pipefail

user=$1

# for ubuntu
adduser ${user}
gpasswd -a ${user} wheel
sudo -u ${user} mkdir /home/${user}/.ssh

chaspy

#!/bin/bash

PECO_CMD="peco"
KUBECTL_CMD="kubectl"

if ! hash "${PECO_CMD}" 2> /dev/null; then
  >&2 echo "error: ${PECO_CMD} is not installed"
  >&2 echo "see https://github.com/peco/peco"
  exit 1
fi

chaspy

#!/bin/bash
set -x

readonly URL="https://api.github.com/search/issues"

usage() {
  cat <<EOS >&2
Usage: $0 -u <user> -s YYYY-MM-DD -e YYYY-MM-DD
  -u: your github user name
  -s: start date to get your contribution

chaspy

aws autoscaling describe-auto-scaling-groups |\
  jq -r '.AutoScalingGroups[].AutoScalingGroupName' |\
  peco |\
  xargs -I{} aws autoscaling describe-auto-scaling-groups --auto-scaling-group-names {} |\
  jq -r '.AutoScalingGroups[]|.Instances[]|select(.LifecycleState == "InService")|select(.HealthStatus == "Healthy")|.InstanceId' |\
  xargs aws ec2 describe-instances --instance-ids |\
  jq -r '.Reservations[].Instances[]|select(.State.Name == "running")|.PrivateIpAddress'

chaspy

#!/bin/bash
LABELS="enhancement improvement"
MILESTONE="v0.2.0"
REPO="kamontia/qs"

for LABEL in $LABELS
do
  echo "# ${LABEL}"
  curl -sS  https://api.github.com/search/issues?q=repo:"$REPO"+label:"$LABEL"+milestone:"$MILESTONE" \
    | jq -c '.items[] | {title,html_url} | .html_url |= . + "\n" ' \

chaspy

#!/bin/bash
set -eux
set -o pipefail

if [ "$(id -un)" != "root" ]; then
  echo "You should run with sudo." 1>&2
  echo "-------------------------"
  exit 1
fi

chaspy

#!/bin/bash

touch /tmp/trap.$$

trap 'echo "trapped"; rm /tmp/trap.$$; exit 1' 2

while :
do
  echo "loop"
  sleep 10