Linux에 Docker 및 Docker Compose 설치

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1. 도커 설치

1.1. 스크립트로 Docker 설치

# Download docker installer script:
curl -fsSL https://get.docker.com -o get-docker.sh
# Install docker by 'get-docker.sh' script:
DRY_RUN=1 sudo sh get-docker.sh

# Remove downloaded script:
rm -vrf get-docker.sh

# To avoid using 'sudo' for docker commands:
# Create a new 'docker' group:
sudo groupadd docker
# Add current user to the 'docker' group:
sudo usermod -aG docker $(whoami)

# Apply new group changes to the new shell session:
newgrp docker
# Or reboot the system to apply docker group changes:
sudo shutdown -r now

# Configure docker to start on reboot:
sudo systemctl enable docker.service
sudo systemctl enable containerd.service

# Check docker is installed and running:
docker -v
docker info
docker images

1.2. [GPU 전용] NVIDIA Docker 설치

## [IMPORTANT] Only for Ubuntu/Debian-based linux
# Download the nvidia-docker GPG key and setup the stable repository:
distribution=$(. /etc/os-release;echo $ID$VERSION_ID) \
   && curl -s -L https://nvidia.github.io/nvidia-docker/gpgkey | sudo apt-key add - \
   && curl -s -L https://nvidia.github.io/nvidia-docker/$distribution/nvidia-docker.list | sudo tee /etc/apt/sources.list.d/nvidia-docker.list

# Update repository list:
sudo apt-get update
# Install nvidia-docker2:
sudo apt-get install -y nvidia-docker2

sudo nano /etc/docker/daemon.json

{
    "default-runtime": "nvidia"
}

{
    "default-runtime": "nvidia",
    "runtimes":
    {
        "nvidia":
        {
            "path": "nvidia-container-runtime",
            "runtimeArgs": []
        }
    }
}

# Restart docker service:
sudo systemctl daemon-reload
sudo systemctl restart docker.service

2. [권장] 도커 로그 파일 최대 크기 및 최대 회전 제한

sudo nano /etc/docker/daemon.json

{
    "log-opts":
    {
        "max-size": "10m",
        "max-file": "10"
    }
}

# Restart docker service:
sudo systemctl restart docker.service

3. Docker Compose V2 설치

## Download docker-compose binary release:
# [RECOMMENDED] Compose v2.2.3 (Linux) release:
sudo curl -L "https://github.com/docker/compose/releases/download/v2.2.3/docker-compose-linux-$(uname -m)" -o /usr/local/bin/docker-compose
# [For old version] Compose v1.29.2 (Linux) release:
# sudo curl -L "https://github.com/docker/compose/releases/download/1.29.2/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
# [Only for experimental] Latest version release:
# sudo curl -L $(curl -s https://api.github.com/repos/docker/compose/releases/latest | grep browser_download_url | grep linux-$(uname -m)\" | cut -d '"' -f 4) -o /usr/local/bin/docker-compose

# Apply executable permission to the docker-compose binary:
sudo chmod +x /usr/local/bin/docker-compose

# Create a symbolic link to '/usr/bin':
sudo ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose

# Check docker-compose version:
docker-compose --version

설치 완료

[선택사항] 도커 데이터 디렉토리를 외부 저장소로 변경

# Stop the docker service:
sudo systemctl stop docker.service

sudo nano /etc/docker/daemon.json

{
   "data-root": "[NEW_STORAGE_PATH]/docker/data-root"
}

{
   "data-root": "/mnt/ssd/1/docker/data-root"
}

# Copy the current docker data directory to the new directory:
sudo rsync -a /var/lib/docker/ [NEW_STORAGE_PATH]/docker/data-root
# For example:
sudo rsync -a /var/lib/docker/ /mnt/ssd/1/docker/data-root

# Rename the old docker data directory as a backup:
sudo mv /var/lib/docker /var/lib/docker.old

# Start docker service:
sudo systemctl start docker.service

# Test docker is working properly:
docker -v
docker info
docker images
docker ps -a

# Remove the old backup docker data directory:
sudo rm -rf /var/lib/docker.old

[선택사항] docker-compose용 명령 자동 완성 설치

# Download docker-compose auto-completion script into '/etc/bash_completion.d/':
sudo curl \
    -L https://raw.githubusercontent.com/docker/compose/1.29.2/contrib/completion/bash/docker-compose \
    -o /etc/bash_completion.d/docker-compose

# Reload current bash shell session:
source ~/.bashrc

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