Claude
b2b4b6dd19
IONOS Cloud Server, DigitalOcean, and Hetzner all offer an "install script"/user-data field that runs as root with no TTY while the image is still provisioning, so bootstrap.sh's interactive tail can't run there. cloud-init.sh clones the repo unattended and drops a one-shot /etc/profile.d hook that launches the normal whiptail setup.sh wizard on the first interactive login, then removes itself.
71 lines
2.8 KiB
Bash
Executable File
71 lines
2.8 KiB
Bash
Executable File
#!/bin/bash
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# cloud-init.sh — payload for a cloud provider's "install script" / user-data
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# field (IONOS Cloud Server image deploy, DigitalOcean droplet user-data,
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# Hetzner Cloud user-data, etc). The provider runs this as root, unattended,
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# with no TTY, while the box is still being provisioned — before you have
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# ever logged in.
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#
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# It deliberately does NOT run the interactive wizard itself (there's no
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# terminal for whiptail to talk to yet). Instead it does two things:
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#
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# 1. Clones this repo to /root/ubuntu-post-install (pulls if already there).
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# 2. Installs a one-shot /etc/profile.d hook that launches setup.sh —
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# the normal whiptail service menu — the first time you actually log
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# in over SSH, then deletes itself so it never fires again.
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#
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# End result: the provider boots Ubuntu 24.04, this runs in the background,
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# and by the time you SSH in the checklist menu is sitting there waiting —
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# the same experience as running bootstrap.sh by hand, just already started.
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#
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# Usage: paste this file's raw URL into the provider's install-script /
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# user-data field, e.g.
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# https://raw.githubusercontent.com/outis1one/ubuntu-post-install/main/cloud-init.sh
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#
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# Assumes the provider logs you in as root (the default for IONOS Cloud
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# Server, DigitalOcean droplets, and Hetzner Cloud server images). If you've
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# provisioned a separate non-root sudo user instead, the hook won't reach
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# you automatically — SSH in and run:
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# sudo bash /root/ubuntu-post-install/setup.sh
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set -euo pipefail
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if [ "$(id -u)" -ne 0 ]; then
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echo "cloud-init.sh must run as root — that's how provider install-script hooks already run it." >&2
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exit 1
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fi
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REPO_URL="https://github.com/outis1one/ubuntu-post-install.git"
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DEST="/root/ubuntu-post-install"
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MARKER="/root/.ubuntu-post-install-pending"
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HOOK="/etc/profile.d/99-ubuntu-post-install.sh"
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command -v git >/dev/null 2>&1 || { apt-get update -qq && apt-get install -y git; }
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if [ -d "$DEST/.git" ]; then
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git -C "$DEST" pull --ff-only || true
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else
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git clone "$REPO_URL" "$DEST"
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fi
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touch "$MARKER"
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# POSIX sh, not bash — /etc/profile.d/*.sh gets sourced by whatever shell
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# the login uses, not necessarily bash.
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cat > "$HOOK" << 'EOF'
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# Installed by cloud-init.sh — launches the ubuntu-post-install wizard on
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# the first interactive login, then removes itself so it never fires again.
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MARKER="/root/.ubuntu-post-install-pending"
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HOOK="/etc/profile.d/99-ubuntu-post-install.sh"
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DEST="/root/ubuntu-post-install"
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if [ -f "$MARKER" ] && [ -t 0 ] && [ "$(id -u)" -eq 0 ] && [ -f "$DEST/setup.sh" ]; then
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rm -f "$MARKER" "$HOOK"
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echo ""
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echo "ubuntu-post-install: launching the setup wizard..."
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echo ""
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bash "$DEST/setup.sh"
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fi
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EOF
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chmod 644 "$HOOK"
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echo "cloud-init.sh: repo cloned to $DEST — the setup wizard will launch on first login."
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