가이드에 사용되는 도구 정보를 입력한다.

docker-compose 버전이 1.X 일 경우 해당 부분 지원하지 않음

#docker-compose 버전 확인
docker-compose -v

sudo rm /usr/local/bin/docker-compose
# curl + grep
VERSION=$(curl --silent https://api.github.com/repos/docker/compose/releases/latest | grep -Po '"tag_name": "\K.*\d')

# curl + jq
VERSION=$(curl --silent https://api.github.com/repos/docker/compose/releases/latest | jq .name -r)
DESTINATION=/usr/local/bin/docker-compose
sudo curl -L https://github.com/docker/compose/releases/download/${VERSION}/docker-compose-$(uname -s)-$(uname -m) -o $DESTINATION
sudo chmod 755 $DESTINATION

services:
  service_name:
    ...
    deploy:
      resources:
        limits:
          cpus: '0.5' # half a CPU
          memory: 256M # 256 MB of RAM
        reservations:
          cpus: '0.25' # a quarter of a CPU
          memory: 128M # 128 MB of RAM

docker-compose -f do-limits.yml up -d

docker stats [OPTIONS] [CONTAINER...]

#접속
docker exec -it [Name 및 Container ID] /bin/bash

#종료
exit

#OS 버전 확인 후 필요한 패키지 설치
cat /etc/*-release
apt-get update &&
apt-get -y install vim &&
apt-get -y install stress

#vi cpu_stress.sh
#chmod 777 cpu_stress.sh

#!/bin/bash

# Function to check if a number is prime
is_prime() {
  local number=$1
  for ((i=2; i<=$((number/2)); i++)); do
    if [ $((number%i)) -eq 0 ]; then
      return 1
    fi
  done
  return 0
}

# Infinite loop to calculate prime numbers
while true; do
  for ((i=2; i<=100000; i++)); do
    if is_prime $i; then
      echo $i
    fi
  done
done

#vi mem_stress.sh
#chmod 777 mem_stress.sh  

#!/bin/bash

# Run the memory stress test loop
while true
do
	#head -c ${memory}k </dev/zero> /dev/null
	</dev/zero head -c 512m | tail
	#</dev/zero head | tail
	#(</dev/zero head -c 512m) <(sleep 300) | tail
done

#CPU 부하
stress --cpu 2 --timeout 20s

#Memory 부하
stress --verbose --vm 1 --vm-bytes 512M --timeout 20s

version: "3"
services:
  web1:
    container_name: test_1
    image: nginx
    #command: sh -c "apt update&&apt-get install vim -y&&apt-get install stress -y&&stress --verbose --vm 1 --vm-bytes 512M"
    entrypoint: sh -c "apt update&&apt-get install vim -y&&apt-get install stress -y&&stress --verbose --vm 1 --vm-bytes 512M"
    ports:
      - "8083:8080"
    deploy:
      resources:
        limits:
          cpus: '1' # half a CPU
          memory: 256M # 256 MB of RAM
        reservations:
          cpus: '0.5' # a quarter of a CPU
          memory: 256M # 128 MB of RAM
  db:
    image: postgres:12
    container_name: postgres12
    environment:
      POSTGRES_USER: sonar
      POSTGRES_PASSWORD: sonar
    deploy:
      resources:
        limits:
          cpus: '1.5' # half a CPU
          memory: 1024M # 256 MB of RAM
        reservations:
          cpus: '0.6' # a quarter of a CPU
          memory: 256M # 128 MB of RAM
  web3:
    container_name: test_3
    image: nginx
    ports:
      - "8082:8080"
    deploy:
      resources:
        limits:
          cpus: '1.5' # half a CPU
          memory: 1024M # 256 MB of RAM
        reservations:
          cpus: '0.6' # a quarter of a CPU
          memory: 256M # 128 MB of RAM