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feat: add zomboid world reset via systemd path unit

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Deploy systemd path unit that watches for trigger file from Discord
bot and executes world reset script to delete saves and restart server.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
Bastian de Byl
2026-01-22 23:11:54 -05:00
parent c2d117bd95
commit 2c7704b6f9
3 changed files with 74 additions and 0 deletions
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57
ansible/roles/podman/templates/zomboid/world-reset.sh.j2 Normal file
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#!/bin/bash
# Zomboid World Reset Script
# Triggered by systemd path unit when discord bot requests reset
set -e
LOGFILE="{{ podman_home }}/.local/share/volumes/zomboid/logs/world-reset.log"
TRIGGER_FILE="{{ podman_home }}/.local/share/volumes/gregtime/data/zomboid-reset.trigger"
SERVER_NAME="{{ zomboid_server_names[zomboid_server_mode] }}"
SAVES_PATH="{{ podman_home }}/.local/share/volumes/zomboid/data/Saves/Multiplayer/${SERVER_NAME}"
DB_PATH="{{ podman_home }}/.local/share/volumes/zomboid/data/db/${SERVER_NAME}.db"
log() {
echo "[$(date '+%Y-%m-%d %H:%M:%S')] $1" | tee -a "$LOGFILE"
}
# Ensure XDG_RUNTIME_DIR is set for systemctl --user
export XDG_RUNTIME_DIR="/run/user/$(id -u)"
log "World reset triggered"
# Read requester info from trigger file if available
# Note: Must use podman unshare because file is owned by container's UID (232071)
if podman unshare test -f "$TRIGGER_FILE"; then
REQUESTER=$(podman unshare cat "$TRIGGER_FILE")
log "Requested by: $REQUESTER"
podman unshare rm -f "$TRIGGER_FILE"
fi
# Stop server
log "Stopping zomboid service..."
systemctl --user stop zomboid.service || true
sleep 5
# Delete world (using podman unshare to work within user namespace)
log "Deleting world saves at: $SAVES_PATH"
if [[ -d "$SAVES_PATH" ]]; then
podman unshare rm -rf "$SAVES_PATH"
log "World saves deleted"
else
log "No world saves found at $SAVES_PATH"
fi
# Delete player database
log "Deleting player database at: $DB_PATH"
if [[ -f "$DB_PATH" ]]; then
podman unshare rm -f "$DB_PATH"
log "Player database deleted"
else
log "No database found at $DB_PATH"
fi
# Start server
log "Starting zomboid service..."
systemctl --user start zomboid.service
log "World reset complete - new world will generate on first connection"

9
ansible/roles/podman/templates/zomboid/zomboid-world-reset.path.j2 Normal file
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[Unit]
Description=Watch for Zomboid world reset trigger
[Path]
PathExists={{ podman_home }}/.local/share/volumes/gregtime/data/zomboid-reset.trigger
Unit=zomboid-world-reset.service
[Install]
WantedBy=default.target

8
ansible/roles/podman/templates/zomboid/zomboid-world-reset.service.j2 Normal file
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[Unit]
Description=Zomboid World Reset Service
[Service]
Type=oneshot
ExecStart={{ podman_home }}/bin/zomboid-world-reset.sh
StandardOutput=journal
StandardError=journal