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feat(B-0834): implement Approach A install-log preservation — tee zeta-install.sh to /tmp + /mnt/var/log #5350

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Merged
AceHack merged 1 commit into from
May 26, 2026
Merged

feat(B-0834): implement Approach A install-log preservation — tee zeta-install.sh to /tmp + /mnt/var/log #5350

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38 changes: 38 additions & 0 deletions full-ai-cluster/usb-nixos-installer/zeta-install.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -26,6 +26,27 @@

set -euo pipefail

# ── B-0834 install log preservation ─────────────────────────────────
# Tee all output to a log file so operator can review post-failure
# (failures + warnings scroll past faster than human read speed under
# load — empirical from 2026-05-26 physical hardware-support test).
# Two destinations:
# 1. /tmp/zeta-install-<timestamp>.log on the live ISO — available
# for `cat | less` AFTER the script exits (success OR failure),
# until reboot
# 2. /mnt/var/log/zeta-install.log on the install target — copied
# from #1 at end of script IF /mnt is mounted; preserved on the
# installed system for post-boot inspection via journalctl OR
# `cat /var/log/zeta-install.log`
# Operators can also `tail -f /tmp/zeta-install-*.log | less` from
# another tty (Ctrl-Alt-F2) to scrollback in real-time.
ZETA_INSTALL_LOG="${ZETA_INSTALL_LOG:-/tmp/zeta-install-$(date -u +%Y%m%dT%H%M%SZ).log}"
exec > >(tee -a "$ZETA_INSTALL_LOG") 2>&1
echo "[B-0834] install log → $ZETA_INSTALL_LOG"
echo "[B-0834] tail -f $ZETA_INSTALL_LOG | less # from another tty for scrollback"
echo "[B-0834] cat $ZETA_INSTALL_LOG | less # after script exits"
echo

REPO_URL="${REPO_URL:-https://github.com/Lucent-Financial-Group/Zeta}"
HOST="${1:-}"
STORAGE_BACKEND="${STORAGE_BACKEND:-longhorn}"
Expand Down Expand Up @@ -709,3 +730,20 @@ fi
echo
echo "================================================================"
echo

# ── B-0834 install log preservation — copy to install target ────────
# At end-of-script (success path), copy the live-ISO log to the
# installed system at /mnt/var/log/zeta-install.log so it survives
# the reboot. After first boot of the installed system, operator can
# inspect via `cat /var/log/zeta-install.log | less`. If /mnt is not
# mounted (e.g., script exited before disk setup), the copy is a
# no-op + the live-ISO log at $ZETA_INSTALL_LOG remains available
# until reboot.
if [ -d "/mnt/var" ]; then
sudo mkdir -p /mnt/var/log
sudo cp "$ZETA_INSTALL_LOG" /mnt/var/log/zeta-install.log
sudo chmod 0644 /mnt/var/log/zeta-install.log
echo "[B-0834] install log copied to /mnt/var/log/zeta-install.log"
echo "[B-0834] post-reboot: \`cat /var/log/zeta-install.log | less\`"
fi
echo "[B-0834] live-ISO copy still available at $ZETA_INSTALL_LOG until reboot"
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