251 lines
8.8 KiB
Bash
Executable File
251 lines
8.8 KiB
Bash
Executable File
#!/bin/bash
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set -euo pipefail
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BANNER=$(cat << "EOF"
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:^7J5GB##&&##GPY?~:
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^75B&@@@@@@&&&@@@@@@@#GJ~:
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5&@@@&B5?7~^^^^^~!7YP#@@@@#!
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Y##P7^ :~JB#B!
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:: :
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7PP?: :^~!!~^: :?PP7
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:B@@B: !5B&@@@@&B5! :#@@B:
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:!!: ^G@@@&BPPB@@@@G^ :!!:
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:B@@@5^ ^5@@@B:
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:7J7: !@@@# :&@@@~ :?J7:
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J@@@5 :#@@@Y: :Y@@@B: 5@@@J
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!@@@&^ ~B@@@&G55G&@@@B~ ~&@@@~
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5@@@G: :7P#@@@@@@#P7: :B@@@Y
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:P@@@B~ :~!77!~: ~B@@@P
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Y@@@&Y^ ^5@@@@J
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!G@@@&P7^ ^7P&@@@G~
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!P&@@@&B? :: ?B&@@@&P!
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^75#&&Y :P&&5: 5&&B57^
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:^^ :P&&5: ^^:
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^^
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[nullpoint]
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EOF
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)
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TANG_SERVERS=(
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# "https://tang1.example.com your-thumbprint-1"
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# "https://tang2.example.com your-thumbprint-2"
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)
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TPM_ENABLED=true
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TPM_PCR_BANK="sha256"
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TPM_PCR_IDS="0,1,2,3,4,5,6,7,8"
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ALMA_USER="null"
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ENABLE_MOTD=true
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# REQUIRED: Set your SSH public key here - installation will fail without it!
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SSH_KEY="ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOkoTn2NreAXMriOUqzyj3YoFW6jMo9B5B+3R5k8yrMi dodox@dodox-ProArt"
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########################################################
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# Config End
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########################################################
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set -euo pipefail
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echo -e "\n$BANNER"
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echo -e "\n[+] Starting post-installation configuration..."
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# Check for SSH key
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if [ -z "${SSH_KEY:-}" ]; then
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echo "ERROR: No SSH key configured!"
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echo "You must set SSH_KEY variable at the top of this script."
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exit 1
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fi
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# Check for TPM
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echo "[+] Checking for TPM..."
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if [ ! -d "/sys/class/tpm/tpm0" ]; then
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echo "WARNING: No TPM detected!"
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TPM_ENABLED=false
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else
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echo "TPM detected."
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TPM_ENABLED=true
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fi
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# Install basic packages first
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echo "[+] Installing basic packages..."
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dnf install -y epel-release || exit 1
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dnf config-manager --set-enabled crb || exit 1
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dnf install -y zsh git wget curl || exit 1
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# Create user and add SSH key
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echo "[+] Creating user ${ALMA_USER}..."
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useradd -m -G wheel -s /bin/zsh ${ALMA_USER} || exit 1
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mkdir -p /home/${ALMA_USER}/.ssh
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echo "${SSH_KEY}" > /home/${ALMA_USER}/.ssh/authorized_keys
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chmod 700 /home/${ALMA_USER}/.ssh
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chmod 600 /home/${ALMA_USER}/.ssh/authorized_keys
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chown -R ${ALMA_USER}:${ALMA_USER} /home/${ALMA_USER}/.ssh
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# Install oh-my-zsh and powerlevel10k
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echo "[+] Installing oh-my-zsh and powerlevel10k..."
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# Download and run oh-my-zsh installer as the user with proper environment
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su - ${ALMA_USER} -c 'export RUNZSH=no CHSH=no KEEP_ZSHRC=yes && bash -c "$(wget -O- https://raw.githubusercontent.com/ohmyzsh/ohmyzsh/master/tools/install.sh)"' 2>/dev/null || echo "WARNING: oh-my-zsh installation failed"
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# Clone powerlevel10k theme
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su - ${ALMA_USER} -c 'git clone --depth=1 https://github.com/romkatv/powerlevel10k.git ~/.oh-my-zsh/custom/themes/powerlevel10k' 2>/dev/null || echo "WARNING: powerlevel10k installation failed"
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# Install dotfiles from git repo
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echo "[+] Installing dotfiles..."
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su - ${ALMA_USER} -c 'cd && git clone https://git.dominik-roth.eu/dodox/nullpoint.git /tmp/nullpoint-dotfiles && cp /tmp/nullpoint-dotfiles/dotfiles/.* . 2>/dev/null || true && rm -rf /tmp/nullpoint-dotfiles' || echo "WARNING: dotfiles installation failed"
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# Set up MOTD
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if [ "$ENABLE_MOTD" = true ]; then
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echo "[+] Setting up MOTD..."
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cat > /etc/motd << MOTD
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$BANNER
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MOTD
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fi
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# Install additional packages
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echo "[+] Installing additional packages..."
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dnf install -y \
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clevis clevis-luks tpm2-tools tpm2-tss \
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tmux neovim python3-pip \
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tree gcc make autoconf automake tar bzip2 || exit 1
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# Install dropbear and dracut-sshd for early boot SSH
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echo "[+] Installing dropbear and dracut-sshd..."
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dnf install -y dropbear dracut-network dracut-sshd || exit 1
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# Install lsd and bat
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echo "[+] Installing lsd and bat..."
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# Install using fixed versions that should work
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LSD_VERSION="1.0.0"
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BAT_VERSION="0.24.0"
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# Download and install lsd
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if curl -sL "https://github.com/lsd-rs/lsd/releases/download/v${LSD_VERSION}/lsd-v${LSD_VERSION}-x86_64-unknown-linux-musl.tar.gz" | tar xz -C /tmp; then
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mv /tmp/lsd-*/lsd /usr/local/bin/ 2>/dev/null || true
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chmod +x /usr/local/bin/lsd 2>/dev/null || true
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fi
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# Download and install bat
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if curl -sL "https://github.com/sharkdp/bat/releases/download/v${BAT_VERSION}/bat-v${BAT_VERSION}-x86_64-unknown-linux-musl.tar.gz" | tar xz -C /tmp; then
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mv /tmp/bat-*/bat /usr/local/bin/ 2>/dev/null || true
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chmod +x /usr/local/bin/bat 2>/dev/null || true
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fi
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# Create batman script for fancy man pages
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cat > /usr/local/bin/batman << 'BATMAN'
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#!/bin/bash
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export MANPAGER="sh -c 'col -bx | bat -l man -p'"
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export MANROFFOPT="-c"
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man "$@"
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BATMAN
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chmod +x /usr/local/bin/batman
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# Create .tmp directory for user
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mkdir -p /home/${ALMA_USER}/.tmp
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chown ${ALMA_USER}:${ALMA_USER} /home/${ALMA_USER}/.tmp
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# Configure Clevis for automatic unlock
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if [ ${#TANG_SERVERS[@]} -gt 0 ] || [ "$TPM_ENABLED" = true ]; then
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echo "[+] Configuring Clevis for automatic unlock..."
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# Find LUKS devices
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LUKS_DEVICES=$(lsblk -o NAME,FSTYPE -nr | grep crypto_LUKS | cut -d' ' -f1)
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for device in $LUKS_DEVICES; do
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DEVICE_PATH="/dev/${device}"
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echo "Configuring Clevis for ${DEVICE_PATH}..."
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if [ "$TPM_ENABLED" = true ] && [ ${#TANG_SERVERS[@]} -eq 0 ]; then
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# TPM only
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clevis luks bind -d "$DEVICE_PATH" tpm2 "{\"pcr_bank\":\"$TPM_PCR_BANK\",\"pcr_ids\":\"$TPM_PCR_IDS\"}"
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elif [ "$TPM_ENABLED" = false ] && [ ${#TANG_SERVERS[@]} -gt 0 ]; then
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# Tang only
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for server in "${TANG_SERVERS[@]}"; do
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read -r url thumbprint <<< "$server"
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clevis luks bind -d "$DEVICE_PATH" tang "{\"url\":\"$url\",\"thp\":\"$thumbprint\"}"
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done
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elif [ "$TPM_ENABLED" = true ] && [ ${#TANG_SERVERS[@]} -gt 0 ]; then
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# Both TPM and Tang (require both)
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CONFIG="{\"t\":2,\"pins\":{"
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CONFIG+="\"tpm2\":{\"pcr_bank\":\"$TPM_PCR_BANK\",\"pcr_ids\":\"$TPM_PCR_IDS\"},"
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CONFIG+="\"tang\":{\"t\":1,\"tang\":["
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for server in "${TANG_SERVERS[@]}"; do
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read -r url thumbprint <<< "$server"
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CONFIG+="{\"url\":\"$url\",\"thp\":\"$thumbprint\"},"
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done
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CONFIG="${CONFIG%,}]}}}"
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clevis luks bind -d "$DEVICE_PATH" sss "$CONFIG"
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fi
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done
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fi
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# Enable Clevis for early boot (only needed for AlmaLinux < 8.7)
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echo "[+] Configuring Clevis for early boot..."
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OS_VERSION=$(cat /etc/redhat-release | grep -oE '[0-9]+\.[0-9]+' | head -1)
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if [[ "$(echo "$OS_VERSION < 8.7" | bc)" -eq 1 ]]; then
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echo " - Enabling clevis-luks-askpass.path for AlmaLinux $OS_VERSION"
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systemctl enable clevis-luks-askpass.path || true
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else
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echo " - AlmaLinux $OS_VERSION: clevis-luks-askpass.path not needed"
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fi
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# Configure dropbear for remote unlock
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echo "[+] Configuring dropbear SSH for remote unlock..."
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# Setup dropbear directory
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mkdir -p /etc/dropbear
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# Add SSH key for initramfs access
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echo "${SSH_KEY}" > /etc/dropbear/initramfs.authorized_keys
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chmod 600 /etc/dropbear/initramfs.authorized_keys
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# Configure dracut to include dropbear
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cat > /etc/dracut.conf.d/99-dropbear-sshd.conf << 'EOF'
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# Enable network and SSH in initramfs
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add_dracutmodules+=" network sshd "
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# Ensure we wait for network
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rd_neednet=1
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EOF
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# Create a helper script for LUKS unlocking
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cat > /usr/local/bin/cryptroot-unlock << 'EOF'
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#!/bin/bash
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echo "Starting LUKS unlock process..."
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echo "Available LUKS devices:"
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ls /dev/mapper/luks-* 2>/dev/null || echo "No LUKS devices found yet"
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echo ""
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echo "Triggering password prompts..."
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systemd-tty-ask-password-agent
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EOF
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chmod +x /usr/local/bin/cryptroot-unlock
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# Ensure the helper script is available in initramfs
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cat >> /etc/dracut.conf.d/99-dropbear-sshd.conf << 'EOF'
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install_items+=" /usr/local/bin/cryptroot-unlock "
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EOF
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# Regenerate initramfs
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echo "[+] Regenerating initramfs..."
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dracut -f --regenerate-all
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# Enable required services
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echo "[+] Enabling services..."
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# systemctl enable stratisd # Not needed without Stratis
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systemctl enable sshd
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# Disable root login
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echo "[+] Securing SSH..."
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sed -i 's/^#PermitRootLogin.*/PermitRootLogin no/' /etc/ssh/sshd_config
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# Set SELinux to enforcing
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echo "[+] Setting SELinux to enforcing..."
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sed -i 's/^SELINUX=.*/SELINUX=enforcing/' /etc/selinux/config
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echo "✅ Post-installation complete!"
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echo ""
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echo "IMPORTANT: The LUKS passphrase is set in install.conf"
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echo "Save it securely for recovery purposes."
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echo ""
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echo "After reboot:"
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echo "- SSH to port 2222 for remote unlock: ssh -p 2222 root@<server-ip>"
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echo "- Run 'unlock-luks' and follow the instructions to unlock LUKS"
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echo "- Once unlocked, SSH to port 22 as user '${ALMA_USER}'"
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echo "- LUKS passphrase: [see installer output]" |