Entropy Reduction

Personal log of yet another digital native.

---

Project maintained by andre-abadi Hosted on GitHub Pages — Theme by mattgraham

Rationale

• Hard drive died :(

Particulars

• Ubuntu Server 20.04 x64 on USB
• Whole of new 500GB SSD
• Optiplex 9020 with 24GB of RAM

Set Timezone

• sudo timedatectl set-timezone Australia/Perth

Enable password-less sudo

• sudo visudo
  • Replace: %sudo ALL=(ALL:ALL) ALL
  • With: %sudo ALL=(ALL:ALL) NOPASSWD:ALL

Netplan to Fixed IP

• sudo vim /etc/netplan/00-installer-config.yaml

  network:
  ethernets:
    eno1:
      dhcp4: false
      dhcp6: false
      addresses:
        - 10.1.1.140/24
      gateway4: 10.1.1.1
      nameservers:
        addresses:
          - 10.1.1.200
      optional: true
  version: 2
  

• sudo netplan try (won’t work well from SSH)
• sudo netplan apply

Update Packages

• sudo apt full-upgrade -y && sudo apt autoremove && sudo apt autoclean -y

NFS and Utilities

sudo apt install -y \
nfs-common \
net-tools

Docker

• Reference Article
• sudo apt install -y apt-transport-https ca-certificates curl gnupg lsb-release
• curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
• echo \ "deb [arch=amd64 signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu \ $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
• sudo apt update
• sudo apt install -y docker-ce docker-ce-cli containerd.io

Docker Without Sudo

Reference

• sudo groupadd docker
• ` sudo gpasswd -a $USER docker`
• newgrp docker
• ` docker run hello-world`

NFS Mounts

sudo mkdir \
/volume1 \
/volume1/transfer \
/volume1/series \
/volume1/music \
/volume1/movies \
/volume1/homevideos \
/volume1/downloads \
/volume1/backup

• sudo vim /etc/fstab

  10.1.1.150:/volume1/transfer /volume1/transfer nfs defaults 0 0
  10.1.1.150:/volume1/series /volume1/series nfs defaults 0 0
  10.1.1.150:/volume1/music /volume1/music nfs defaults 0 0
  10.1.1.150:/volume1/movies /volume1/movies nfs defaults 0 0
  10.1.1.150:/volume1/homevideos /volume1/homevideos nfs defaults 0 0
  10.1.1.150:/volume1/downloads /volume1/downloads nfs defaults 0 0
  10.1.1.150:/volume1/backup /volume1/downloads nfs defaults 0 0
  

Docker Wait for NFS

• sudo mkdir /etc/systemd/system/docker.service.d
• sudo vim /etc/systemd/system/docker.service.d/override.conf

  [Unit]
  RequiresMountsFor=/volume1/downloads /volume1/homevideos /volume1/movies /volume1/music /volume1/series /volume1/transfer
  After=volume1-downloads.mount volume1-homevideos.mount volume1-movies.mount volume1-music.mount volume1-series.mount volume1-transfer.mount
  Requires=volume1-downloads.mount volume1-homevideos.mount volume1-movies.mount volume1-music.mount volume1-series.mount volume1-transfer.mount
  

• sudo service docker reload

Docker Compose

• sudo apt install -y docker-compose

Nvidia Driver

• apt search nvidia-driver
• Find largest value of nvidia-driver-XXX
• sudo apt install -y nvidia-driver-465
• sudo reboot

Nvidia Docker

• Reference Article
• nvidia-docker vs nvidia-docker2

  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
  

• sudo apt update
• sudo apt install -y nvidia-docker2
• Required restart of Docker engine with new runtime: sudo systemctl restart docker
• Test: sudo docker run --rm --gpus all nvidia/cuda:11.0-base nvidia-smi

Disable Swap File

• Reference Article
• Check for swap file: sudo swapon --show
• sudo swapoff -v /swap.img
• sudo rm -rf /swap.img
• sudo vim /etc/fstab
• Remove the line starting with /swap.img

Disable UI

• Reference Article
• sudo systemctl set-default multi-user

Re-Mount 2nd HDD

• Create mount point: sudo mkdir /cctv
• Note disk name at: sudo fdisk -l | grep /dev/sd
• blkid | grep /dev/sd
• Copy UUID (first one)
• sudo vim /etc/fstab
• /dev/disk/by-uuid/83e98c09-3e5e-4125-8f5e-65fa2196858f /cctv ext4 defaults 0 0
• sudo mount -a

Restore Docker Images

• mkdir ~/.docker && cd ~/.docker
• tar -xf plex.tar
• sudo docker-copmpose up -d
• sudo docker logs -f plex