82 lines
3.1 KiB
Bash
82 lines
3.1 KiB
Bash
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#!/bin/bash
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# Prometheus + Grafana for the labsim connectivity matrix.
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#
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# Grafana runs with anonymous auth as Admin — NO LOGIN. That is deliberate for
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# a throwaway lab on localhost; do not copy this into anything reachable.
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#
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# ./monitoring-up.sh start exporter + prometheus + grafana
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# ./monitoring-up.sh --down stop and remove them
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#
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# Grafana: http://localhost:3000 (dashboard "labsim — VLAN connectivity matrix")
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# Prometheus: http://localhost:9090
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# Exporter: http://localhost:9101/metrics
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set -euo pipefail
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SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
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source "$SCRIPT_DIR/lib.sh"
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GRAFANA_PORT="${GRAFANA_PORT:-3000}"
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PROM_PORT="${PROM_PORT:-9090}"
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EXPORTER_PORT="${EXPORTER_PORT:-9101}"
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NET="labsim-mon"
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if [ "${1:-}" = "--down" ]; then
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pkill -f "labsim-exporter.py" 2>/dev/null || true
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podman rm -f labsim-grafana labsim-prometheus >/dev/null 2>&1 || true
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podman network rm -f "$NET" >/dev/null 2>&1 || true
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log "monitoring stopped"
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exit 0
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fi
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command -v podman >/dev/null 2>&1 || die "podman not installed"
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# --- exporter (on the host: it needs SSH access to the VMs) ----------------
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if pgrep -f "labsim-exporter.py" >/dev/null 2>&1; then
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log "exporter already running on :$EXPORTER_PORT"
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else
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log "starting exporter on :$EXPORTER_PORT"
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nohup "$SCRIPT_DIR/labsim-exporter.py" --port "$EXPORTER_PORT" --interval 15 \
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> /tmp/labsim-exporter.log 2>&1 &
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sleep 3
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fi
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curl -sS --max-time 5 "http://127.0.0.1:${EXPORTER_PORT}/metrics" >/dev/null \
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|| die "exporter not answering on :$EXPORTER_PORT (see /tmp/labsim-exporter.log)"
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podman network exists "$NET" 2>/dev/null || podman network create "$NET" >/dev/null
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# --- prometheus -----------------------------------------------------------
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podman rm -f labsim-prometheus >/dev/null 2>&1 || true
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log "starting prometheus on :$PROM_PORT"
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podman run -d --name labsim-prometheus --network "$NET" \
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-p "${PROM_PORT}:9090" \
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-v "$SCRIPT_DIR/monitoring/prometheus.yml:/etc/prometheus/prometheus.yml:ro,Z" \
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--add-host "host.containers.internal:host-gateway" \
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docker.io/prom/prometheus:latest >/dev/null
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# --- grafana (anonymous, no login) ----------------------------------------
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podman rm -f labsim-grafana >/dev/null 2>&1 || true
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log "starting grafana on :$GRAFANA_PORT (anonymous auth — no password)"
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podman run -d --name labsim-grafana --network "$NET" \
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-p "${GRAFANA_PORT}:3000" \
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-e GF_AUTH_ANONYMOUS_ENABLED=true \
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-e GF_AUTH_ANONYMOUS_ORG_ROLE=Admin \
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-e GF_AUTH_DISABLE_LOGIN_FORM=true \
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-e GF_AUTH_BASIC_ENABLED=false \
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-e GF_SECURITY_ALLOW_EMBEDDING=true \
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-e GF_USERS_DEFAULT_THEME=dark \
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-v "$SCRIPT_DIR/monitoring/grafana/provisioning:/etc/grafana/provisioning:ro,Z" \
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docker.io/grafana/grafana:latest >/dev/null
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log "waiting for grafana..."
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for _ in $(seq 1 40); do
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if curl -sS --max-time 3 "http://127.0.0.1:${GRAFANA_PORT}/api/health" >/dev/null 2>&1; then
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break
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fi
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sleep 3
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done
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echo
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log "Grafana: http://localhost:${GRAFANA_PORT}/d/labsim-matrix (no login)"
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log "Prometheus: http://localhost:${PROM_PORT}"
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log "Exporter: http://localhost:${EXPORTER_PORT}/metrics"
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