Koung koungkub

## purge-cache.sh
go clean -cache -modcache -i -r

## permission.sh
sudo chown "$USER":"$USER" /home/"$USER"/.docker -R
sudo chmod g+rwx "$HOME/.docker" -R

## cloud-init.yml
users:
  - default
  - name: ubuntu
    sudo: ALL=(ALL) NOPASSWD:ALL
    ssh_authorized_keys:
      - {Your local's public key}

## install-docker.sh
curl -fsSL https://get.docker.com | sh

## initial-scala.sh
sbt new sbt/scala-seed.g8

## docker-compose.yml
version: '3.7'
services:
  pg:
    image: postgres:15-bullseye
    restart: always
    networks:
      - internal
    shm_size: 256mb
    healthcheck:
      test: [ 'CMD', 'pg_isready', '-U', 'postgres' ]

## utility.sh
# linux-based
netstat -lnptu

# mac-based
lsof -i 8080 | grep LISTEN
ps -ef | grep 1029
kill -9 1029

## system_info.sh
# linux system infomation
lsb_release -a

# macos system information
sw_vers

# kernal information
uname -a

## sysctl.conf
# debian based

# Protect Against TCP Time-Wait
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_rfc1337 = 1

# reload
# sysctl -p

## benchmark.sh
// install
sudo apt install fio -y

// read
fio --randrepeat=1 --ioengine=libaio --direct=1 --gtod_reduce=1 --name=test --filename=random_read.fio --bs=4k --iodepth=64 --size=4G --readwrite=randread;

// write
fio --randrepeat=1 --ioengine=libaio --direct=1 --gtod_reduce=1 --name=test --filename=random_write.fio --bs=4k --iodepth=64 --size=4G --readwrite=randwrite;
	sudo chown "$USER":"$USER" /home/"$USER"/.docker -R
	sudo chmod g+rwx "$HOME/.docker" -R
	users:
	- default
	- name: ubuntu
	sudo: ALL=(ALL) NOPASSWD:ALL
	ssh_authorized_keys:
	- {Your local's public key}
	version: '3.7'
	services:
	pg:
	image: postgres:15-bullseye
	restart: always
	networks:
	- internal
	shm_size: 256mb
	healthcheck:
	test: [ 'CMD', 'pg_isready', '-U', 'postgres' ]
	# linux-based
	netstat -lnptu

	# mac-based
	lsof -i 8080 \| grep LISTEN
	ps -ef \| grep 1029
	kill -9 1029
	# linux system infomation
	lsb_release -a

	# macos system information
	sw_vers

	# kernal information
	uname -a
	# debian based

	# Protect Against TCP Time-Wait
	net.ipv4.tcp_tw_reuse = 1
	net.ipv4.tcp_tw_recycle = 1
	net.ipv4.tcp_rfc1337 = 1

	# reload
	# sysctl -p
	// install
	sudo apt install fio -y

	// read
	fio --randrepeat=1 --ioengine=libaio --direct=1 --gtod_reduce=1 --name=test --filename=random_read.fio --bs=4k --iodepth=64 --size=4G --readwrite=randread;

	// write
	fio --randrepeat=1 --ioengine=libaio --direct=1 --gtod_reduce=1 --name=test --filename=random_write.fio --bs=4k --iodepth=64 --size=4G --readwrite=randwrite;