97 lines
4.3 KiB
Bash
97 lines
4.3 KiB
Bash
# lib/common.sh - Shared helpers for Proxmox LXC creator scripts.
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#
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# Sourced (not executed) by openbao/install.sh and gitea-runner/install.sh.
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# Assumes the sourcing script already defines log_info/log_warn/log_error
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# (both scripts do, identically) — this file does not redefine them.
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#
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# Contract for future LXC creator scripts:
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# - detect_latest_alpine_template(): Alpine only. A future Debian-based
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# script needs its own detect_latest_debian_template() (same pattern:
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# pveam available + sort -V + hardcoded fallback) — do not overload
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# this function with an OS parameter.
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# - enable_tty1_autologin(): implements the Alpine/OpenRC autologin
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# mechanism (inittab + agetty). A future Debian-based script needs a
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# distinct function (systemd container-getty override) rather than a
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# branch inside this one.
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# - find_existing_lxc(): OS-agnostic, works by tag/hostname via `pct
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# config`. Reusable as-is by any LXC creator script.
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# - refresh_os_packages(): Alpine only (apk update && apk upgrade). A
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# future Debian-based script needs its own apt-get variant.
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set -euo pipefail
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# ============================================================
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# #12 - Detect newest Alpine LXC template available from the Proxmox repos.
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# Echoes the template filename. Falls back to a hardcoded known-good
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# template if `pveam` is unavailable or returns nothing.
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# ============================================================
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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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# ============================================================
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# #14 - Enable root auto-login on tty1 for an Alpine/OpenRC LXC.
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# Idempotent: safe to call on every install/update.
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# ============================================================
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enable_tty1_autologin() {
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log_info "Enabling console auto-login on tty1..."
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# Alpine ships busybox getty by default; agetty (from util-linux) is what
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# supports --autologin.
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apk add --no-cache agetty >/dev/null 2>&1 || apk add --no-cache util-linux >/dev/null
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# Replace any existing tty1 entry, then append our autologin line. Doing it
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# in two steps (delete + append) is more robust than an in-place sed against
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# a pattern that may drift across Alpine releases.
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sed -i '/^tty1::/d' /etc/inittab
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echo 'tty1::respawn:/sbin/agetty --autologin root --noclear 38400 tty1' >> /etc/inittab
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# Tell PID 1 to re-read /etc/inittab so the change takes effect without a reboot.
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kill -HUP 1 2>/dev/null || true
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# Kick any getty/agetty still attached to tty1 so init respawns it *now* with
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# the new line — otherwise the first web-console session lands on the stale
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# process and the operator has to type `exit` once before autologin kicks in.
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pkill -KILL -f '(getty|agetty).*tty1' 2>/dev/null || true
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}
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# ============================================================
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# #15 - Find an existing LXC by tag or hostname (host-side, requires pct).
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# Echoes the CTID on match, returns 1 if none found.
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#
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# Expects HOSTNAME_LXC and LXC_TAG to be set by the caller (as openbao's
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# find_existing_lxc already does).
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# ============================================================
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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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# ============================================================
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# #15 - Refresh OS packages (Alpine: apk update && apk upgrade).
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# Callable both host-side (via pct exec) and inside the LXC.
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# ============================================================
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refresh_os_packages() {
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log_info "Refreshing Alpine packages..."
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apk update >/dev/null && apk upgrade >/dev/null
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}
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