potato-mesh/.env.example

# Copyright © 2025-26 l5yth & contributors
# Licensed under the Apache License, Version 2.0 (see LICENSE)
#
# PotatoMesh Environment Configuration
# Copy this file to .env and customize for your setup

# =============================================================================
# REQUIRED SETTINGS
# =============================================================================

# Public domain name for this PotatoMesh instance (required for webapp)
# Provide a hostname (with optional port) that resolves to the web service.
# Example: mesh.example.org or mesh.example.org:41447
INSTANCE_DOMAIN="mesh.example.org"

# API authentication token (required for ingestor communication)
# Generate a secure token: openssl rand -hex 32
API_TOKEN="your-secure-api-token-here"

# Mesh radio connection target (required for ingestor)
# Common serial paths:
# - Linux: /dev/ttyACM0, /dev/ttyUSB0
# - macOS: /dev/cu.usbserial-*
# - Windows (WSL): /dev/ttyS*
# You may also provide an IP:PORT pair (e.g. 192.168.1.20:4403) or a
# Bluetooth address (e.g. ED:4D:9E:95:CF:60).
CONNECTION="/dev/ttyACM0"

# Mesh protocol to use (meshtastic, meshcore, or reticulum)
# Default: meshtastic
PROTOCOL="meshtastic"

# --- PROTOCOL=reticulum only -------------------------------------------------
# Reticulum (RNS) config directory for the passive announce listener.
# Defaults to ~/.reticulum, the stack rnsd already uses. Point it elsewhere
# only if the ingestor should read a different RNS config.
# RETICULUM_CONFIG_DIR="/home/you/.reticulum"

# Restrict announce ingestion to named RNS interfaces (comma-separated,
# case-insensitive substring match, e.g. "rnode"). An RNS stack may carry LoRa
# and IP interfaces at once, and RNS's default config enables an AutoInterface
# (IPv6 link-local multicast) — leaving this empty ingests every announce
# reachable over any interface, which on a LAN means the whole local Reticulum
# network. Empty is the default.
# RETICULUM_INTERFACES="rnode"

# INGESTOR_NODE_ID (see below) is an OVERRIDE here, not a requirement. The
# ingestor derives its !xxxxxxxx from your primary identity -- the one announcing
# the most destinations on this machine -- so the heartbeat and the packets/hour
# stats come up unaided. It is not the transport identity. Set INGESTOR_NODE_ID
# to override the pick, or where no one identity announces the most.
#
# Changing the id strands the old row: the previous ingestor stays in
# /api/ingestors without heartbeats until it ages out. Leaving the variable
# as-is across upgrades is inert.
#
# CONNECTION does not apply. It names one serial/TCP/BLE endpoint, which an RNS
# stack of many interfaces does not have. Its counterparts are the two variables
# above: RETICULUM_CONFIG_DIR says which stack, RETICULUM_INTERFACES says which
# of its interfaces to ingest from. A set CONNECTION is ignored and said so at
# startup, because the shipped image carries a serial default for every protocol.
# -----------------------------------------------------------------------------

# =============================================================================
# SITE CUSTOMIZATION
# =============================================================================

# Your mesh network name
SITE_NAME="My Meshtastic Network"

# Meshtastic radio preset shown in the join strip (CHANNEL is a deprecated alias)
MESHTASTIC_PRESET="#LongFast"

# Meshtastic frequency for your region (FREQUENCY is a deprecated alias)
# Common frequencies: 868MHz (Europe), 915MHz (US), 433MHz (Worldwide)
MESHTASTIC_FREQ="915MHz"

# Meshcore preset and frequency. The join strip hides the Meshcore line until
# both are set.
# MESHCORE_PRESET="MediumFast"
# MESHCORE_FREQ="867.5MHz"

# Announcement banner rendered above the header on every page
# ANNOUNCEMENT="Net every Tuesday 20:00"

# Directory for static, custom-content pages served at /pages/:slug
# PAGES_DIR=./pages

# Absolute http(s) URL for the social preview image. Replaces the generated
# /og-image.png for deployments without Chromium.
# OG_IMAGE_URL="https://cdn.example.org/preview.png"

# Map center coordinates (latitude, longitude)
# Berlin, Germany: 52.502889, 13.404194
# Denver, Colorado: 39.7392, -104.9903
# London, UK: 51.5074, -0.1278
MAP_CENTER="38.761944,-27.090833"

# Maximum distance to show nodes (kilometers)
MAX_DISTANCE=42

# =============================================================================
# OPTIONAL INTEGRATIONS
# =============================================================================

# Community chat link or Matrix room for your community (optional)
# Matrix aliases (e.g. #meshtastic-berlin:matrix.org) will be linked via matrix.to automatically.
CONTACT_LINK="#potatomesh:dod.ngo"

# Enable or disable PotatoMesh federation features (1=enabled, 0=disabled)
FEDERATION=1

# Hide public mesh messages from unauthenticated visitors (1=hidden, 0=public)
PRIVATE=0

# Comma-separated channel names to ingest. Unset = ingest all channels.
# ALLOWED_CHANNELS=LongFast,Ops

# Comma-separated channel names to drop. Applied after ALLOWED_CHANNELS.
# HIDDEN_CHANNELS=Private

# Drop Meshtastic packets and nodes relayed via MQTT (0=keep, 1=drop).
# DROP_VIA_MQTT=1

# Live-update SSE stream at /api/events (1=on, 0=off -> clients poll instead)
EVENTS=1

# Comma-separated node ids to expose as per-node Prometheus gauges.
# Unset exports none. See PROMETHEUS.md.
# PROM_REPORT_IDS=!abcd1234,!beef5678


# =============================================================================
# TRANSMIT SETTINGS  (your ingestor putting traffic on the air)
# =============================================================================
#
# By default a PotatoMesh ingestor is a LISTENER: it receives, and it transmits
# nothing. Everything below is off unless you deliberately turn it on, because
# airtime is a shared resource and your community's norms about automated
# traffic are yours to set, not ours.

# Master transmit switch (0=receive only, 1=allow transmitting)
# Leave at 0 and the ingestor never puts anything on the mesh.
# Turning this on enables MeshCore on-air telemetry polling of other nodes,
# which is how their battery/voltage readings reach your dashboard.
# Does NOT by itself enable announcements — see TX_ANNOUNCE.
# Local reads over USB/BLE to your own radio are not transmissions and always
# work, whatever this is set to.
TX_ENABLED=0

# Periodic activity announcement (0=off, 1=on). Requires TX_ENABLED=1.
# Broadcasts ONE line on your default channel, at most once every 24 hours, and
# never in the first 24 hours after start:
#   "Meshtastic activity in the last 24h: 42 active nodes, 118 packets/hour. https://your.domain"
# This is unsolicited automated traffic on a channel people read. Check that
# your community wants it before enabling.
TX_ANNOUNCE=0


# =============================================================================
# ADVANCED SETTINGS
# =============================================================================

# Debug mode (0=off, 1=on)
DEBUG=0

# Energy saving mode — sleep between ingestion cycles (0=off, 1=on)
ENERGY_SAVING=0

# Channel index the activity announcement is sent on (not an ingest filter)
CHANNEL_INDEX=0

# Seconds between Meshcore host self-telemetry reads over the companion link
# (no airtime). 0 disables.
# MESHCORE_SELF_TELEMETRY_SECONDS=3600

# Seconds between Meshcore contact telemetry polls. Requires TX_ENABLED=1
# (polling other nodes transmits). 0 disables on-air polling.
# MESHCORE_TELEMETRY_POLL_SECONDS=300

# Comma-separated node ids exempt from the once-per-24h telemetry cooldown;
# listed nodes are re-polled every round-robin rotation. Requires TX_ENABLED=1.
# MESHCORE_TELEMETRY_POLL_24H_EXEMPT=!abc12345,!def67890

# Default map zoom override
# MAP_ZOOM=15

# Docker image architecture (linux-amd64, linux-arm64, linux-armv7)
POTATOMESH_IMAGE_ARCH="linux-amd64"

# Docker image tag (use "latest" for the newest release or pin to vX.Y)
POTATOMESH_IMAGE_TAG="latest"

# Docker Compose networking profile
# Leave unset for Linux hosts (default host networking).
# Set to "bridge" on Docker Desktop (macOS/Windows) if host networking
# is unavailable.
# COMPOSE_PROFILES="bridge"

# =============================================================================
# PASSIVE UDP TRANSPORT
# =============================================================================
# Ingest by passively listening to the node's "Mesh via UDP" LAN multicast
# instead of holding the radio's single API/serial slot. Enable it on the node
# first: `meshtastic --set network.enabled_protocols 1`. Requires host
# networking (multicast can't reach a bridged container). See the
# "Passive UDP transport" section of README.md.

# Transport: "api" (Meshtastic library over serial/TCP/BLE) or "udp" (passive).
# TRANSPORT=udp

# Ingest only channel 0. In UDP mode filtering is unconditional; this flag only
# affects the api/serial transport.
# PRIMARY_CHANNEL_ONLY=1

# Base64 primary-channel PSK (Meshtastic default key shown).
# PRIMARY_CHANNEL_KEY=AQ==

# Name of channel 0 — the preset name (MediumFast/LongFast/...) when the radio
# leaves the name blank, as shown by `meshtastic --info`. REQUIRED for UDP
# primary-only: it resolves the channel hash that separates the primary channel
# from a secondary channel sharing the default key. If unset, UDP mode drops ALL
# traffic (fail closed).
# PRIMARY_CHANNEL_NAME=MediumFast

# Host node id used for the ingestor heartbeat. REQUIRED for TRANSPORT=udp, which
# cannot auto-detect "self" -- without it the heartbeat never registers and the
# packets/hour stats stay at zero. OPTIONAL for PROTOCOL=reticulum, which derives
# its own id from your primary identity; set it there only to override that.
# INGESTOR_NODE_ID=!xxxxxxxx

# Multicast groups/port for "Mesh via UDP" (defaults shown). The default listens
# on both groups; set one address to listen on that group only.
# MESH_UDP_GROUP=239.0.0.69,224.0.0.69
# MESH_UDP_PORT=4403
# Frequency and preset shown for Reticulum nodes. Both are read from the first
# RNodeInterface in your RNS config; set these only to override that.
# RETICULUM_FREQ="867.2MHz"
# RETICULUM_PRESET="SF8/BW125/CR5"