Thales Maciel
9191b7e370
Make spawned VMs easier to use and restore from the host. Add shared DNS and runtime helpers, publish <vm-name>.vm records through mapdns, and teach run/customize/interactive/restore to persist the metadata needed for SSH, DNS cleanup, and clean restores. Seed per-VM /home and /var disks from the rootfs snapshot so package state is present on first boot, add an interactive customization entrypoint plus ssh.sh and human-friendly list output, and let stop/kill/rm operate on multiple VM identifiers. Tear down stale TAP, dm, and loop state when VMs stop so restore can recreate them safely, and validate the updated scripts with bash -n plus targeted dry-run harnesses for teardown and restore paths.
120 lines
3.1 KiB
Bash
Executable file
120 lines
3.1 KiB
Bash
Executable file
#!/usr/bin/env bash
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set -euo pipefail
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shopt -s nullglob
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format_count_unit() {
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local count="$1"
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local singular="$2"
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local plural="$3"
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if (( count == 1 )); then
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printf '%s %s ago' "$count" "$singular"
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else
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printf '%s %s ago' "$count" "$plural"
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fi
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}
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humanize_created_at() {
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local created_at="$1"
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local created_epoch elapsed
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if [[ -z "$created_at" ]]; then
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printf '%s' "-"
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return 0
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fi
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created_epoch="$(date -d "$created_at" +%s 2>/dev/null || true)"
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if [[ -z "$created_epoch" ]]; then
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printf '%s' "$created_at"
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return 0
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fi
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elapsed=$((NOW_EPOCH - created_epoch))
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if (( elapsed < 0 )); then
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elapsed=0
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fi
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if (( elapsed < 45 )); then
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printf '%s' "a few moments ago"
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elif (( elapsed < 90 )); then
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printf '%s' "about a minute ago"
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elif (( elapsed < 3600 )); then
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format_count_unit "$((elapsed / 60))" "minute" "minutes"
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elif (( elapsed < 5400 )); then
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printf '%s' "about an hour ago"
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elif (( elapsed < 86400 )); then
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format_count_unit "$((elapsed / 3600))" "hour" "hours"
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elif (( elapsed < 172800 )); then
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printf '%s' "1 day ago"
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elif (( elapsed < 604800 )); then
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format_count_unit "$((elapsed / 86400))" "day" "days"
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elif (( elapsed < 1209600 )); then
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printf '%s' "1 week ago"
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elif (( elapsed < 2592000 )); then
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format_count_unit "$((elapsed / 604800))" "week" "weeks"
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elif (( elapsed < 5184000 )); then
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printf '%s' "1 month ago"
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elif (( elapsed < 31536000 )); then
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format_count_unit "$((elapsed / 2592000))" "month" "months"
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elif (( elapsed < 63072000 )); then
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printf '%s' "1 year ago"
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else
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format_count_unit "$((elapsed / 31536000))" "year" "years"
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fi
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}
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statuses=()
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ids=()
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names=()
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ips=()
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created=()
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max_name=4
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max_ip=2
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max_created=7
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GREEN='\033[32m'
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YELLOW='\033[33m'
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RESET='\033[0m'
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NOW_EPOCH="$(date +%s)"
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for vm_json in state/vms/*/vm.json; do
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id="$(jq -r '.meta.id // empty' "$vm_json")"
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name="$(jq -r '.meta.name // empty' "$vm_json")"
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created_at="$(jq -r '.meta.created_at // empty' "$vm_json")"
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created_display="$(humanize_created_at "$created_at")"
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guest_ip="$(jq -r '.meta.guest_ip // empty' "$vm_json")"
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pid="$(jq -r '.meta.pid // empty' "$vm_json")"
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api_sock="$(jq -r '.meta.api_sock // empty' "$vm_json")"
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status="stopped"
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if [[ -n "$pid" && -n "$api_sock" ]]; then
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if ps -p "$pid" -o comm=,args= 2>/dev/null | rg -q "firecracker.*--api-sock $api_sock"; then
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status="running"
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fi
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fi
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short_id="${id:0:12}"
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statuses+=("$status")
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ids+=("$short_id")
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names+=("$name")
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ips+=("$guest_ip")
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created+=("$created_display")
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if (( ${#name} > max_name )); then
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max_name=${#name}
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fi
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if (( ${#guest_ip} > max_ip )); then
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max_ip=${#guest_ip}
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fi
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if (( ${#created_display} > max_created )); then
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max_created=${#created_display}
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fi
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done
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for i in "${!ids[@]}"; do
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color="$YELLOW"
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if [[ "${statuses[$i]}" == "running" ]]; then
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color="$GREEN"
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fi
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printf '%-10b %-12s %-*s %-*s %-*s\n' \
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"${color}[${statuses[$i]}]${RESET}" "${ids[$i]}" "$max_name" "${names[$i]}" "$max_ip" "${ips[$i]}" "$max_created" "${created[$i]}"
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done
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