Raspberry Pi integration for Grafana Cloud
The Raspberry Pi integration uses the agent to collect metrics related to the operating system (Linux-based), including aspects like CPU usage, load average, memory usage, and disk and networking I/O. It also supports system logs being scraped by the agent using promtail. An accompanying dashboard is provided to visualize these metrics and logs.
This integration includes 8 useful alerts and 1 pre-built dashboard to help monitor and visualize Raspberry Pi metrics and logs.
Before you begin
Each Raspberry Pi node being observed must have its dedicated Grafana Agent running.
Install Raspberry Pi integration for Grafana Cloud
- In your Grafana Cloud stack, click Connections in the left-hand menu.
- Find Raspberry Pi and click its tile to open the integration.
- Review the prerequisites in the Configuration Details tab and set up Grafana Agent to send Raspberry Pi metrics and logs to your Grafana Cloud instance.
- Click Install to add this integration’s pre-built dashboard and alerts to your Grafana Cloud instance, and you can start monitoring your Raspberry Pi setup.
Post-install configuration for the Raspberry Pi integration
This integration is configured to work with the node_exporter
, which is embedded in Grafana Agent.
Enable the integration by adding the snippets provided to your agent configuration file.
Note: The
instance
label must uniquely identify the node being scraped. Also, ensure each deployed Grafana Agent has a configuration that matches the node it is deployed to.
This integration supports metrics and logs from Raspberry Pi. If you want to monitor your Raspberry Pi node logs, there are 3 options. You can:
- scrape the journal
- scrape your OS log files directly
- scrape both your journal and OS log files
We recommend that you enable journal scraping because it comes with a unit label that can be used to filter logs on the dashboards. Config snippets for both cases are provided.
If you want to show logs and metrics signals correlated in your dashboards, as a single pane of glass, ensure the following:
job
andinstance
label values must match fornode_exporter
integration andlogs
scrape config in your agent configuration file.job
label must be set tointegrations/raspberrypi-node
(already configured in the snippets).instance
label must be set to a value that uniquely identifies your Linux Node. Please replace the default<your-instance-name>
value according to your environment - it should be set manually. Note that if you uselocalhost
for multiple nodes, the dashboards will not be able to filter correctly by instance.
For a full description of configuration options see how to configure the node_exporter_config
block in the agent documentation.
Configuration snippets for Grafana Agent
Below integrations
, insert the following lines and change the URLs according to your environment:
node_exporter:
enabled: true
relabel_configs:
- replacement: '<your-instance-name>'
target_label: instance
- replacement: integrations/raspberrypi-node
target_label: job
Below logs.configs.scrape_configs
, insert the following lines according to your environment.
- job_name: integrations/node_exporter_journal_scrape
journal:
max_age: 24h
labels:
instance: '<your-instance-name>'
job: integrations/raspberrypi-node
relabel_configs:
- source_labels: ['__journal__systemd_unit']
target_label: 'unit'
- source_labels: ['__journal__boot_id']
target_label: 'boot_id'
- source_labels: ['__journal__transport']
target_label: 'transport'
- source_labels: ['__journal_priority_keyword']
target_label: 'level'
- job_name: integrations/node_exporter_direct_scrape
static_configs:
- targets:
- localhost
labels:
instance: '<your-instance-name>'
__path__: /var/log/{syslog,messages,*.log}
job: integrations/raspberrypi-node
Full example configuration for Grafana Agent
Refer to the following Grafana Agent configuration for a complete example that contains all the snippets used for the Raspberry Pi integration. This example also includes metrics that are sent to monitor your Grafana Agent instance.
integrations:
prometheus_remote_write:
- basic_auth:
password: <your_prom_pass>
username: <your_prom_user>
url: <your_prom_url>
agent:
enabled: true
relabel_configs:
- action: replace
source_labels:
- agent_hostname
target_label: instance
- action: replace
target_label: job
replacement: "integrations/agent-check"
metric_relabel_configs:
- action: keep
regex: (prometheus_target_.*|prometheus_sd_discovered_targets|agent_build.*|agent_wal_samples_appended_total|process_start_time_seconds)
source_labels:
- __name__
# Add here any snippet that belongs to the `integrations` section.
# For a correct indentation, paste snippets copied from Grafana Cloud at the beginning of the line.
node_exporter:
enabled: true
relabel_configs:
- replacement: '<your-instance-name>'
target_label: instance
- replacement: integrations/raspberrypi-node
target_label: job
logs:
configs:
- clients:
- basic_auth:
password: <your_loki_pass>
username: <your_loki_user>
url: <your_loki_url>
name: integrations
positions:
filename: /tmp/positions.yaml
scrape_configs:
# Add here any snippet that belongs to the `logs.configs.scrape_configs` section.
# For a correct indentation, paste snippets copied from Grafana Cloud at the beginning of the line.
- job_name: integrations/node_exporter_journal_scrape
journal:
max_age: 24h
labels:
instance: '<your-instance-name>'
job: integrations/raspberrypi-node
relabel_configs:
- source_labels: ['__journal__systemd_unit']
target_label: 'unit'
- source_labels: ['__journal__boot_id']
target_label: 'boot_id'
- source_labels: ['__journal__transport']
target_label: 'transport'
- source_labels: ['__journal_priority_keyword']
target_label: 'level'
- job_name: integrations/node_exporter_direct_scrape
static_configs:
- targets:
- localhost
labels:
instance: '<your-instance-name>'
__path__: /var/log/{syslog,messages,*.log}
job: integrations/raspberrypi-node
metrics:
configs:
- name: integrations
remote_write:
- basic_auth:
password: <your_prom_pass>
username: <your_prom_user>
url: <your_prom_url>
scrape_configs:
# Add here any snippet that belongs to the `metrics.configs.scrape_configs` section.
# For a correct indentation, paste snippets copied from Grafana Cloud at the beginning of the line.
global:
scrape_interval: 60s
wal_directory: /tmp/grafana-agent-wal
Dashboards
The Raspberry Pi integration installs the following dashboards in your Grafana Cloud instance to help monitor your system.
- Node Exporter / Raspberry
Raspberry Pi overview
Raspberry Pi logs
Alerts
The Raspberry Pi integration includes the following useful alerts:
Alert | Description |
---|---|
NodeFilesystemAlmostOutOfSpace | Warning: Filesystem has less than 3% space left. |
NodeFilesystemAlmostOutOfSpace | Critical: Filesystem has less than 5% space left. |
NodeFilesystemFilesFillingUp | Warning: Filesystem is predicted to run out of inodes within the next 24 hours. |
NodeFilesystemFilesFillingUp | Critical: Filesystem is predicted to run out of inodes within the next 4 hours. |
NodeFilesystemAlmostOutOfFiles | Warning: Filesystem has less than 5% inodes left. |
NodeFilesystemAlmostOutOfFiles | Critical: Filesystem has less than 3% inodes left. |
NodeNetworkReceiveErrs | Warning: Network interface is reporting many receive errors. |
NodeNetworkTransmitErrs | Warning: Network interface is reporting many transmit errors. |
Metrics
The most important metrics provided by the Raspberry Pi integration, which are used on the pre-built dashboard and Prometheus alerts, are as follows:
- node_cpu_seconds_total
- node_disk_io_time_seconds_total
- node_disk_io_time_weighted_seconds_total
- node_disk_read_bytes_total
- node_disk_written_bytes_total
- node_filesystem_avail_bytes
- node_filesystem_files
- node_filesystem_files_free
- node_filesystem_readonly
- node_filesystem_size_bytes
- node_hwmon_temp_celsius
- node_load1
- node_load15
- node_load5
- node_memory_Buffers_bytes
- node_memory_Cached_bytes
- node_memory_MemAvailable_bytes
- node_memory_MemFree_bytes
- node_memory_MemTotal_bytes
- node_memory_Slab_bytes
- node_network_receive_bytes_total
- node_network_receive_drop_total
- node_network_receive_errs_total
- node_network_receive_packets_total
- node_network_transmit_bytes_total
- node_network_transmit_drop_total
- node_network_transmit_errs_total
- node_network_transmit_packets_total
- node_uname_info
- node_vmstat_pgmajfault
Changelog
# 0.0.4 - September 2023
* Update Grafana Agent configuration snippets to include filtered metrics used in gauge panels
# 0.0.3 - August 2023
* Add regex filter for logs datasource
# 0.0.2 - July 2023
* New Filter Metrics option for configuring the Grafana Agent, which saves on metrics cost by dropping any metric not used by this integration. Beware that anything custom built using metrics that are not on the snippet will stop working.
# 0.0.1 - September 2022
* Initial release
Cost
By connecting your Raspberry Pi instance to Grafana Cloud, you might incur charges. To view information on the number of active series that your Grafana Cloud account uses for metrics included in each Cloud tier, see Active series and dpm usage and Cloud tier pricing.
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