e8920b246b
Enable root auto-login on tty1 for faster shell access in Proxmox LXCs by configuring agetty with autologin and adding the necessary inittab entry
542 lines
18 KiB
Bash
Executable File
542 lines
18 KiB
Bash
Executable File
#!/bin/bash
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# install.sh - OpenBao: LXC creation, installation & update
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# Usage:
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# From Proxmox host : bash -c "$(curl -fsSL https://gitea.arnodo.fr/Damien/infra-scripts/raw/branch/feat/lxc-OpenBao/openbao/install.sh)"
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# From inside LXC : bash /root/install.sh (updates bao binary)
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#
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# Single entrypoint, three automatic modes:
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# 1. Proxmox host, no existing container -> create LXC + install OpenBao
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# 2. Proxmox host, container already present -> update packages + upgrade bao
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# 3. Inside an LXC -> install bao if missing, otherwise update
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#
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# The OpenBao binary install/upgrade logic lives in a single reusable function
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# (install_or_upgrade_bao) shared by both the create and update paths.
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set -euo pipefail
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# --- Config (override via environment) ---
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CTID="${CTID:-}"
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HOSTNAME_LXC="${OPENBAO_HOSTNAME:-openbao}"
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TEMPLATE="${TEMPLATE:-}" # auto-detected when empty
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STORAGE="${STORAGE:-local-lvm}"
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TEMPLATE_STORAGE="${TEMPLATE_STORAGE:-local}"
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CORES="${CORES:-2}"
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RAM="${RAM:-1024}"
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DISK="${DISK:-8}"
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BRIDGE="${BRIDGE:-vmbr0}"
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LXC_TAG="${LXC_TAG:-openbao}" # stable identifier for the container
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OPENBAO_VERSION="${OPENBAO_VERSION:-latest}" # "latest" or e.g. "v2.0.3"
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OPENBAO_API="https://api.github.com/repos/openbao/openbao/releases"
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OPENBAO_LISTEN_ADDR="${OPENBAO_LISTEN_ADDR:-127.0.0.1:8200}"
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# Public API address advertised to clients (also used for OIDC / UI redirects).
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# Defaults to the local listener; override with the tailnet URL once known,
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# e.g. OPENBAO_API_ADDR="https://openbao.<tailnet>.ts.net".
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OPENBAO_API_ADDR="${OPENBAO_API_ADDR:-http://${OPENBAO_LISTEN_ADDR}}"
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# Optional: pre-authorise the LXC's Tailscale non-interactively.
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# Generate at https://login.tailscale.com/admin/settings/keys
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TS_AUTHKEY="${TS_AUTHKEY:-}"
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SCRIPT_URL="https://gitea.arnodo.fr/Damien/infra-scripts/raw/branch/feat/lxc-OpenBao/openbao/install.sh"
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VERSION_FILE="/opt/openbao_version.txt"
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BAO_USER="openbao"
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BAO_CONFIG_DIR="/etc/openbao"
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BAO_DATA_DIR="/var/lib/openbao"
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# --- Colors ---
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RED='\033[0;31m'
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GREEN='\033[0;32m'
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YELLOW='\033[1;33m'
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NC='\033[0m'
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log_info() { echo -e "${GREEN}[INFO]${NC} $1"; }
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log_warn() { echo -e "${YELLOW}[WARN]${NC} $1"; }
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log_error() { echo -e "${RED}[ERROR]${NC} $1"; }
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# ============================================================
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# Generic helpers
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# ============================================================
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require_root() {
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if [[ "$(id -u)" -ne 0 ]]; then
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log_error "This script must be run as root (current uid: $(id -u))."
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log_error "On Proxmox, launch it from the host shell or via the Web UI shell, both of which run as root."
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exit 1
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fi
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}
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get_arch() {
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case "$(uname -m)" in
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x86_64) echo "amd64" ;;
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aarch64) echo "arm64" ;;
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*) log_error "Unsupported architecture: $(uname -m)"; exit 1 ;;
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esac
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}
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# Resolve "latest" -> concrete tag name, otherwise echo input unchanged.
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resolve_openbao_version() {
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local requested="$1"
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if [[ "$requested" != "latest" ]]; then
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echo "$requested"
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return 0
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fi
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local tag
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tag=$(curl -fsSL "${OPENBAO_API}/latest" | jq -r '.tag_name')
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if [[ -z "$tag" || "$tag" == "null" ]]; then
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log_error "Failed to resolve latest OpenBao release from GitHub API."
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exit 1
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fi
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echo "$tag"
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}
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# ============================================================
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# Reusable: install or upgrade the bao binary in-place.
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# Used by both fresh-install and update flows.
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# Returns 0 on success, exits on hard error.
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# ============================================================
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install_or_upgrade_bao() {
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local tag arch version url tmpdir current
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tag=$(resolve_openbao_version "$OPENBAO_VERSION")
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arch=$(get_arch)
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version="${tag#v}"
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current=""
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if [[ -f "$VERSION_FILE" ]]; then
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current=$(cat "$VERSION_FILE")
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fi
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if [[ "$current" == "$tag" && -x /usr/local/bin/bao ]]; then
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log_info "OpenBao already at $tag, nothing to do."
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return 0
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fi
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# OpenBao publishes zip archives named bao_<version>_linux_<arch>.zip
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url="https://github.com/openbao/openbao/releases/download/${tag}/bao_${version}_linux_${arch}.zip"
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log_info "Downloading OpenBao ${tag} (${arch}) from ${url}..."
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tmpdir=$(mktemp -d)
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trap 'rm -rf "$tmpdir"' RETURN
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curl -fsSL "$url" -o "${tmpdir}/bao.zip"
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unzip -q -o "${tmpdir}/bao.zip" -d "$tmpdir"
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if [[ ! -f "${tmpdir}/bao" ]]; then
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log_error "Archive did not contain expected 'bao' binary."
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exit 1
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fi
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# Stop service if running, swap binary atomically, then restart.
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local service_was_running=0
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if command -v rc-service >/dev/null 2>&1 && rc-service openbao status >/dev/null 2>&1; then
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service_was_running=1
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log_info "Stopping openbao service for upgrade..."
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rc-service openbao stop || true
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fi
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if [[ -x /usr/local/bin/bao ]]; then
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cp /usr/local/bin/bao "/usr/local/bin/bao.bak.$(date +%s)"
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fi
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install -m 0755 "${tmpdir}/bao" /usr/local/bin/bao
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ln -sf /usr/local/bin/bao /usr/bin/bao
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echo "$tag" > "$VERSION_FILE"
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log_info "Installed: $(/usr/local/bin/bao --version 2>&1 | head -n1 || true)"
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if [[ "$service_was_running" -eq 1 ]]; then
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log_info "Restarting openbao service..."
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rc-service openbao start
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fi
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}
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# ============================================================
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# Reusable: bring Tailscale up and publish OpenBao on the tailnet.
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# Idempotent: re-running is a no-op once Tailscale is logged in and the
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# serve mapping is already in place.
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# ============================================================
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configure_tailscale_proxy() {
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if ! command -v tailscale >/dev/null 2>&1; then
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log_warn "tailscale CLI not found, skipping reverse-proxy setup."
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return 0
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fi
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# 1. Authenticate the node (if it isn't already).
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local backend_state
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backend_state=$(tailscale status --json 2>/dev/null | jq -r '.BackendState // "unknown"')
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if [[ "$backend_state" != "Running" ]]; then
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if [[ -n "$TS_AUTHKEY" ]]; then
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log_info "Bringing Tailscale up with provided auth key..."
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tailscale up --authkey "$TS_AUTHKEY" --ssh --hostname "$HOSTNAME_LXC" \
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|| log_warn "tailscale up failed — run it manually inside the LXC."
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else
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log_warn "Tailscale not authenticated and TS_AUTHKEY was not supplied."
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log_warn "Finish setup inside the LXC with: tailscale up --ssh"
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log_warn "Then publish OpenBao with: tailscale serve --bg --https=443 http://${OPENBAO_LISTEN_ADDR}"
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return 0
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fi
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fi
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# 2. Publish the local OpenBao listener on the tailnet (auto-HTTPS).
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if tailscale serve status 2>/dev/null | grep -q "${OPENBAO_LISTEN_ADDR}"; then
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log_info "Tailscale serve already publishes http://${OPENBAO_LISTEN_ADDR}."
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else
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log_info "Publishing OpenBao on the tailnet via 'tailscale serve' (HTTPS:443)..."
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tailscale serve --bg --https=443 "http://${OPENBAO_LISTEN_ADDR}" \
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|| log_warn "tailscale serve failed — enable HTTPS on your tailnet and retry."
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fi
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local fqdn
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fqdn=$(tailscale status --json 2>/dev/null | jq -r '.Self.DNSName // ""' | sed 's/\.$//')
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if [[ -n "$fqdn" ]]; then
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log_info "OpenBao should now be reachable at: https://${fqdn}"
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if [[ "$OPENBAO_API_ADDR" != "https://${fqdn}" ]]; then
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log_warn "OPENBAO_API_ADDR is '${OPENBAO_API_ADDR}'."
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log_warn "For OIDC / UI redirects, set it to 'https://${fqdn}' and re-run, or edit ${BAO_CONFIG_DIR}/config.hcl."
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fi
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fi
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}
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# ============================================================
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# Proxmox-host helpers
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# ============================================================
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# Detect newest Alpine LXC template available from the Proxmox repos.
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detect_latest_alpine_template() {
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local tmpl
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tmpl=$(pveam available --section system 2>/dev/null \
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| awk '/^system[[:space:]]+alpine-/ {print $2}' \
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| sort -V \
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| tail -n1)
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if [[ -z "$tmpl" ]]; then
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log_warn "Could not query pveam; falling back to a known-good Alpine template."
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tmpl="alpine-3.22-default_20250617_amd64.tar.xz"
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fi
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log_info "Selected Alpine template: $tmpl"
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echo "$tmpl"
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}
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# Find an existing LXC by tag or hostname. Echoes CTID, returns 1 if none.
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find_existing_lxc() {
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local id host tags
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while read -r id _; do
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[[ -z "$id" || "$id" == "VMID" ]] && continue
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host=$(pct config "$id" 2>/dev/null | awk -F': ' '/^hostname:/ {print $2}' || true)
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tags=$(pct config "$id" 2>/dev/null | awk -F': ' '/^tags:/ {print $2}' || true)
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if [[ "$host" == "$HOSTNAME_LXC" ]] || [[ ",${tags//;/,}," == *",${LXC_TAG},"* ]]; then
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echo "$id"
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return 0
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fi
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done < <(pct list | awk 'NR>1 {print $1}')
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return 1
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}
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ensure_template_present() {
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local tmpl="$1"
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if ! pveam list "$TEMPLATE_STORAGE" 2>/dev/null | grep -q "$tmpl"; then
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log_info "Downloading template ${tmpl} to storage ${TEMPLATE_STORAGE}..."
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pveam update >/dev/null
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pveam download "$TEMPLATE_STORAGE" "$tmpl"
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else
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log_info "Template ${tmpl} already present on ${TEMPLATE_STORAGE}."
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fi
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}
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# Pick next available CTID if user did not provide one.
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allocate_ctid() {
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pvesh get /cluster/nextid 2>/dev/null \
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|| pvesh get /cluster/resources --type vm --output-format json 2>/dev/null \
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| jq '[.[].vmid] | max + 1' \
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|| echo 100
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}
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# Inject the script into the container and execute it in the requested mode.
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# Forwards the relevant runtime configuration through the environment so the
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# inner invocation produces the same config the user requested on the host.
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exec_in_lxc() {
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local ctid="$1"
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local mode="$2" # --install or --update
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# Ensure base tooling exists inside the container before piping the script.
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pct exec "$ctid" -- sh -c "apk add --no-cache bash curl jq unzip ca-certificates >/dev/null 2>&1"
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curl -fsSL "$SCRIPT_URL" \
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| pct exec "$ctid" -- env \
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OPENBAO_VERSION="$OPENBAO_VERSION" \
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OPENBAO_HOSTNAME="$HOSTNAME_LXC" \
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OPENBAO_LISTEN_ADDR="$OPENBAO_LISTEN_ADDR" \
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OPENBAO_API_ADDR="$OPENBAO_API_ADDR" \
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TS_AUTHKEY="$TS_AUTHKEY" \
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bash -s -- "$mode"
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}
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# ============================================================
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# MODE: Proxmox host — create LXC + install
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# ============================================================
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create_lxc() {
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log_info "=== OpenBao — LXC creation ==="
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if [[ -z "$TEMPLATE" ]]; then
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TEMPLATE=$(detect_latest_alpine_template)
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else
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log_info "Using user-provided template: $TEMPLATE"
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fi
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ensure_template_present "$TEMPLATE"
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if [[ -z "$CTID" ]]; then
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CTID=$(allocate_ctid)
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log_info "Auto-selected CTID: $CTID"
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fi
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log_info "Creating LXC ${CTID} (${HOSTNAME_LXC})..."
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pct create "$CTID" "${TEMPLATE_STORAGE}:vztmpl/${TEMPLATE}" \
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--hostname "$HOSTNAME_LXC" \
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--cores "$CORES" \
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--memory "$RAM" \
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--rootfs "${STORAGE}:${DISK}" \
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--net0 "name=eth0,bridge=${BRIDGE},ip=dhcp" \
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--unprivileged 1 \
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--features "nesting=1" \
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--tags "infra-script,${LXC_TAG}" \
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--onboot 1 \
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--start 0
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# Tailscale needs /dev/net/tun inside the unprivileged container.
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log_info "Adding /dev/net/tun passthrough for Tailscale..."
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cat >> "/etc/pve/lxc/${CTID}.conf" <<EOF
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lxc.cgroup2.devices.allow: c 10:200 rwm
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lxc.mount.entry: /dev/net dev/net none bind,create=dir
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lxc.mount.entry: /dev/net/tun dev/net/tun none bind,create=file
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EOF
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log_info "Starting LXC ${CTID}..."
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pct start "$CTID"
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# Wait for network to come up
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local tries=0
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until pct exec "$CTID" -- sh -c "ip -4 addr show eth0 | grep -q 'inet '" 2>/dev/null; do
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tries=$((tries + 1))
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if (( tries > 20 )); then
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log_error "LXC ${CTID} did not acquire an IP after 20s."
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exit 1
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fi
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sleep 1
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done
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log_info "Running installer inside LXC ${CTID}..."
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exec_in_lxc "$CTID" "--install"
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local ip
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ip=$(pct exec "$CTID" -- ip -4 addr show eth0 2>/dev/null | awk '/inet /{print $2}' | cut -d/ -f1 || true)
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echo ""
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log_info "========================================="
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log_info "LXC ${CTID} created successfully!"
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log_info "========================================="
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echo ""
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echo " Hostname : ${HOSTNAME_LXC}"
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echo " IP : ${ip:-pending}"
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echo " API : http://${ip:-<ip>}:8200"
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echo ""
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echo "Next steps:"
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echo " pct enter ${CTID}"
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echo " export VAULT_ADDR=http://127.0.0.1:8200"
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echo " bao operator init # initialise & retrieve unseal keys + root token"
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echo " bao operator unseal # repeat with the unseal keys"
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echo ""
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}
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# ============================================================
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# MODE: Proxmox host — update existing LXC
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# ============================================================
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update_lxc() {
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local ctid="$1"
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log_info "=== OpenBao — updating existing LXC ${ctid} ==="
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if ! pct status "$ctid" | grep -q running; then
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log_info "Starting LXC ${ctid}..."
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pct start "$ctid"
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sleep 3
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fi
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log_info "Refreshing Alpine packages inside LXC ${ctid}..."
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pct exec "$ctid" -- sh -c "apk update >/dev/null && apk upgrade >/dev/null"
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log_info "Upgrading bao binary inside LXC ${ctid}..."
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exec_in_lxc "$ctid" "--update"
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log_info "Update of LXC ${ctid} complete."
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}
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# ============================================================
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# MODE: inside LXC — fresh install of OpenBao
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# ============================================================
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install_inside_lxc() {
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log_info "=== OpenBao — installation ==="
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log_info "Updating package index..."
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apk update >/dev/null
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apk upgrade >/dev/null
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log_info "Installing dependencies..."
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# gcompat: OpenBao binaries are glibc-built; gcompat is required on musl Alpine.
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apk add --no-cache bash curl jq unzip ca-certificates gcompat openrc logrotate tailscale >/dev/null
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log_info "Enabling tailscaled..."
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rc-update add tailscale default >/dev/null 2>&1 || true
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rc-service tailscale start >/dev/null 2>&1 || log_warn "tailscaled failed to start (is /dev/net/tun mapped into the LXC?)"
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install_or_upgrade_bao
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log_info "Creating ${BAO_USER} system user..."
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if ! id "$BAO_USER" >/dev/null 2>&1; then
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addgroup -S "$BAO_USER" 2>/dev/null || true
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adduser -S -D -H -h "$BAO_DATA_DIR" -s /sbin/nologin -G "$BAO_USER" "$BAO_USER"
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fi
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log_info "Provisioning directories..."
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mkdir -p "$BAO_CONFIG_DIR" "$BAO_DATA_DIR/data"
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chown -R "${BAO_USER}:${BAO_USER}" "$BAO_DATA_DIR"
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chmod 750 "$BAO_DATA_DIR"
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if [[ ! -f "${BAO_CONFIG_DIR}/config.hcl" ]]; then
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log_info "Writing default ${BAO_CONFIG_DIR}/config.hcl..."
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# OpenBao listens on loopback only; Tailscale (running in the same LXC)
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# acts as the reverse proxy and terminates TLS via tailnet certificates.
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# https://openbao.org/docs/configuration/
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cat > "${BAO_CONFIG_DIR}/config.hcl" <<EOF
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ui = true
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disable_mlock = true
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storage "raft" {
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path = "${BAO_DATA_DIR}/data"
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node_id = "${HOSTNAME_LXC}"
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}
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listener "tcp" {
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address = "${OPENBAO_LISTEN_ADDR}"
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tls_disable = 1
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}
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api_addr = "${OPENBAO_API_ADDR}"
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cluster_addr = "http://127.0.0.1:8201"
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EOF
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chown root:"$BAO_USER" "${BAO_CONFIG_DIR}/config.hcl"
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chmod 640 "${BAO_CONFIG_DIR}/config.hcl"
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else
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log_info "Existing ${BAO_CONFIG_DIR}/config.hcl preserved."
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fi
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log_info "Installing OpenRC service..."
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cat > /etc/init.d/openbao <<'EOF'
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#!/sbin/openrc-run
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name="OpenBao"
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description="OpenBao secrets manager"
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command="/usr/local/bin/bao"
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command_args="server -config=/etc/openbao/config.hcl"
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command_user="openbao:openbao"
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command_background=true
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pidfile="/run/${RC_SVCNAME}.pid"
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directory="/var/lib/openbao"
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output_log="/var/log/openbao.log"
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error_log="/var/log/openbao.log"
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depend() {
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need net
|
|
after net
|
|
}
|
|
|
|
start_pre() {
|
|
checkpath --directory --owner openbao:openbao --mode 0750 /var/lib/openbao
|
|
checkpath --directory --owner openbao:openbao --mode 0750 /var/lib/openbao/data
|
|
checkpath --file --owner openbao:openbao --mode 0644 /var/log/openbao.log
|
|
}
|
|
EOF
|
|
chmod +x /etc/init.d/openbao
|
|
rc-update add openbao default >/dev/null
|
|
|
|
cat > /etc/logrotate.d/openbao <<'EOF'
|
|
/var/log/openbao.log {
|
|
daily
|
|
rotate 7
|
|
compress
|
|
missingok
|
|
notifempty
|
|
copytruncate
|
|
}
|
|
EOF
|
|
ln -sf /usr/sbin/logrotate /etc/periodic/daily/logrotate 2>/dev/null || true
|
|
|
|
log_info "Starting openbao service..."
|
|
rc-service openbao start || log_warn "openbao failed to start — inspect /var/log/openbao.log"
|
|
|
|
log_info "Enabling console auto-login on tty1..."
|
|
mkdir -p /etc/conf.d
|
|
cat > /etc/conf.d/agetty <<'EOF'
|
|
agetty_options="--autologin root --noclear"
|
|
EOF
|
|
sed -i 's|^tty1::respawn:/sbin/getty.*|tty1::respawn:/sbin/agetty --autologin root --noclear 38400 tty1|' /etc/inittab
|
|
|
|
configure_tailscale_proxy
|
|
|
|
log_info "Cleaning up..."
|
|
rm -rf /var/cache/apk/*
|
|
|
|
echo ""
|
|
log_info "========================================="
|
|
log_info "OpenBao installation complete!"
|
|
log_info "========================================="
|
|
echo ""
|
|
echo "Initialise the server with:"
|
|
echo " export VAULT_ADDR=http://127.0.0.1:8200"
|
|
echo " bao operator init"
|
|
echo " bao operator unseal # repeat with each unseal key share"
|
|
echo ""
|
|
}
|
|
|
|
# ============================================================
|
|
# MODE: inside LXC — update only
|
|
# ============================================================
|
|
update_inside_lxc() {
|
|
log_info "=== OpenBao — update ==="
|
|
apk update >/dev/null
|
|
apk upgrade >/dev/null
|
|
install_or_upgrade_bao
|
|
configure_tailscale_proxy
|
|
log_info "Update complete."
|
|
}
|
|
|
|
# ============================================================
|
|
# Main — dispatch on explicit mode flag or auto-detect context
|
|
# ============================================================
|
|
main() {
|
|
case "${1:-}" in
|
|
--install)
|
|
install_inside_lxc
|
|
return
|
|
;;
|
|
--update)
|
|
update_inside_lxc
|
|
return
|
|
;;
|
|
esac
|
|
|
|
if command -v pct >/dev/null 2>&1; then
|
|
# Running on a Proxmox host
|
|
require_root
|
|
|
|
local existing=""
|
|
if existing=$(find_existing_lxc); then
|
|
log_info "Found existing OpenBao LXC (CTID ${existing}, hostname/tag match) — switching to update mode."
|
|
update_lxc "$existing"
|
|
else
|
|
create_lxc
|
|
fi
|
|
else
|
|
# Inside a container (no Proxmox tooling)
|
|
require_root
|
|
if [[ -x /usr/local/bin/bao ]]; then
|
|
update_inside_lxc
|
|
else
|
|
install_inside_lxc
|
|
fi
|
|
fi
|
|
}
|
|
|
|
main "$@"
|