Start Prometheus and Grafana localy and configure OpenWRT exporter

configure-monitoring.sh

#!/bin/bash

MAIN_DIR=~/monitoring
ROUTER_NODE_EXPORTER_ADDRESS="192.168.88.1:9100"

if ! [ -d "$MAIN_DIR" ]; then
  mkdir -p $MAIN_DIR
fi

# NOTE: https://grafana.com/blog/2021/02/09/how-i-monitor-my-openwrt-router-with-grafana-cloud-and-prometheus/
# Remember to run on router:
# opkg update && \
#   opkg install prometheus-node-exporter-lua \
#   prometheus-node-exporter-lua-nat_traffic \
#   prometheus-node-exporter-lua-netstat \
#   prometheus-node-exporter-lua-openwrt \
#   prometheus-node-exporter-lua-wifi \
#   prometheus-node-exporter-lua-wifi_stations
#
# cat << EOF > /etc/config/prometheus-node-exporter-lua
# config prometheus-node-exporter-lua 'main'
#         option listen_ipv6 '0'
#         option listen_port '9100'
#         option listen_interface 'lan'
# EOF
#
# /etc/init.d/prometheus-node-exporter-lua restart

################
## Prometheus ##
################

mkdir -p $MAIN_DIR/prometheus/etc
mkdir -p $MAIN_DIR/prometheus/var

chmod 0777 -R $MAIN_DIR/prometheus/etc $MAIN_DIR/prometheus/var/

cat << EOF > $MAIN_DIR/prometheus/etc/prometheus.yaml
global:
  evaluation_interval: "1m"
  scrape_interval: "1m"
  scrape_timeout: "10s"
scrape_configs:
  - job_name: node
    static_configs:
      - targets:
          - $ROUTER_NODE_EXPORTER_ADDRESS
EOF

podman create --name prometheus \
  --network host \
  -v $MAIN_DIR/prometheus/etc:/etc/prometheus/:Z \
  -v $MAIN_DIR/prometheus/var:/prometheus:Z \
  quay.io/prometheus/prometheus:latest \
  --config.file=/etc/prometheus/prometheus.yaml

podman start prometheus

#############
## Grafana ##
#############
mkdir -p $MAIN_DIR/grafana/etc/{secrets,provisioning}
mkdir -p $MAIN_DIR/grafana/etc/provisioning/{datasources,dashboards}
mkdir -p $MAIN_DIR/grafana/var/grafana/plugins

chmod 0777 -R $MAIN_DIR/grafana/etc $MAIN_DIR/grafana/var/

cat << EOF > $MAIN_DIR/grafana/etc/secrets/admin_password
admin
EOF

cat << EOF > $MAIN_DIR/grafana/etc/secrets/admin_user
admin
EOF

# Create simply config
cat << EOF > $MAIN_DIR/grafana/etc/grafana.ini
[paths]
[server]
root_url = http://localhost:3000/
EOF

# Create datasource for Prometheus
cat << EOF > $MAIN_DIR/grafana/etc/provisioning/datasources/prometheus.yaml
---
apiVersion: 1
datasources:
- id: 1
  uid: edu7l5b3oledca
  name: prometheus
  type: prometheus
  typeName: Prometheus
  access: proxy
  url: http://localhost:9090
  basicAuth: false
  isDefault: true
  readOnly: false
  version: 1
EOF

# Create dashboard config file
cat << EOF > $MAIN_DIR/grafana/etc/provisioning/dashboards/dashboards.yaml
---
apiVersion: 1
providers:
- name: 'default'
  orgId: 1
  type: file
  disableDeletion: true
  editable: false
  updateIntervalSeconds: 10
  allowUiUpdates: false
  options:
    path: /etc/grafana/provisioning/dashboards
    foldersFromFilesStructure: true
EOF

# Download dashboard - https://grafana.com/grafana/dashboards/18153-openwrt/
# curl -SL https://grafana.com/api/dashboards/18153/revisions/3/download > $MAIN_DIR/grafana/etc/provisioning/dashboards/18153.json

podman create --name grafana \
  --network host \
  -v $MAIN_DIR/grafana/etc:/etc/grafana:Z \
  -v $MAIN_DIR/grafana/var:/var/lib/grafana/:z \
  -e GF_SECURITY_ADMIN_PASSWORD__FILE="/etc/grafana/secrets/admin_password" \
  -e GF_SECURITY_ADMIN_USER__FILE="/etc/grafana/secrets/admin_user" \
  -e GF_AUTH_ANONYMOUS_ENABLED='true' \
  -e GF_USERS_ALLOW_SIGN_UP='true' \
  grafana/grafana:10.4.6

podman start grafana