# =============================================================================
# otel-lgtm - OpenTelemetry Backend (Grafana, Prometheus, Tempo, Loki, Pyroscope)
# =============================================================================
# Image: grafana/otel-lgtm
# Docs:  https://github.com/grafana/docker-otel-lgtm
# =============================================================================

# -- Image Tag -----------------------------------------------------------------
OTEL_LGTM_VERSION=latest

# -- Grafana Admin Credentials -------------------------------------------------
GF_ADMIN_USER=admin
GF_ADMIN_PASSWORD=admin

# -- Exposed Ports -------------------------------------------------------------
# Grafana dashboard
EXPOSE_GRAFANA_PORT=3000
# OpenTelemetry Collector - OTLP gRPC (used by instrumented apps/services)
EXPOSE_OTLP_GRPC_PORT=4317
# OpenTelemetry Collector - OTLP HTTP (used by instrumented apps/services)
EXPOSE_OTLP_HTTP_PORT=4318
# Prometheus metrics UI
EXPOSE_PROMETHEUS_PORT=9090
# Tempo HTTP query endpoint
EXPOSE_TEMPO_HTTP_PORT=3200
# Pyroscope continuous profiling UI
EXPOSE_PYROSCOPE_PORT=4040

# -- Verbose Container Logging -------------------------------------------------
# Set any of these to "true" to enable verbose logs for that component.
# These are component-internal logs (not the application telemetry data).
ENABLE_LOGS_GRAFANA=false
ENABLE_LOGS_LOKI=false
ENABLE_LOGS_PROMETHEUS=false
ENABLE_LOGS_TEMPO=false
ENABLE_LOGS_PYROSCOPE=false
ENABLE_LOGS_OTELCOL=false
# Override: enable ALL component logging at once
ENABLE_LOGS_ALL=false

# -- eBPF Auto-Instrumentation (OBI) ------------------------------------------
# Requires Linux kernel 5.8+ with BTF support. Also requires privileged mode
# and host PID namespace. If enabled, uncomment the `cap_add`, `network_mode`,
# and `pid` lines in docker-compose.yaml.
ENABLE_OBI=false

# -- External OTLP Forwarding --------------------------------------------------
# Forward telemetry to an external OTLP-compatible backend (e.g., Grafana Cloud).
# Leave blank to send data only to the local LGTM stack.
OTEL_EXPORTER_OTLP_ENDPOINT=
OTEL_EXPORTER_OTLP_HEADERS=

# -- Tempo MCP Server ---------------------------------------------------------
# Enables the Tempo MCP server for AI tool integration (e.g., Cline, Claude Code).
# Set to "--query-frontend.mcp-server.enabled=true" to enable.
TEMPO_EXTRA_ARGS=

# -- Per-Backend Extra CLI Args -----------------------------------------------
# Additional command-line flags for individual backends.
# Example: PROMETHEUS_EXTRA_ARGS="--storage.tsdb.retention.time=90d"
PROMETHEUS_EXTRA_ARGS=
LOKI_EXTRA_ARGS=
TEMPO_EXTRA_ARGS_V2=
PYROSCOPE_EXTRA_ARGS=
OTELCOL_EXTRA_ARGS=