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TrueNAS dashboard for Grafana
Raw
1-grafana-truenas.md

TrueNAS dashboard for Grafana

This setup is basically using the configuration from https://crashlaker.github.io/2021/10/09/truenas_snmp_exporter.html

It allows to monitor:

  • CPU and disk (hdd / NVMe) temperature
  • network traffic
  • RAM usage
  • system load
  • uptime
  • zpool health
  • zpool usage / available space

It assumes Prometheus as data backend. Also, nas.local is the NAS machine hostname used throughout this Gist.

This note is a bit of a experiment with Gists.

The end result looks like this: grafana-NAS

Configure SNMP on TrueNAS

In my case SNMPv3 is used: TrueNAS-SNMP

The TrueNAS SNMP MIBs live in the /usr/local/share/snmp/mibs on the TrueNAS machine, so copy them over to the matchine that will be running the SNMP exporter:

scp -r nas.local:/usr/local/share/snmp/mibs truenas-mibs

and verify the basic functionality (assumes the net-snmp is installed):

$ snmptranslate -M +truenas-mibs -On FREENAS-MIB::hddTempTable
.1.3.6.1.4.1.50536.3

$ snmpwalk -M +truenas-mibs -l authPriv \
    -a SHA -A 'INSERT_AUTH_PASSWORD_HERE' -x AES -X 'INSERT_PRIV_PASSWORD_HERE' \
    -u grafana -v 3 nas FREENAS-MIB::hddTempTable
FREENAS-MIB::hddTempDevice.1 = STRING: da0
FREENAS-MIB::hddTempDevice.2 = STRING: ada0
FREENAS-MIB::hddTempDevice.3 = STRING: ada2
FREENAS-MIB::hddTempDevice.4 = STRING: ada3
FREENAS-MIB::hddTempDevice.5 = STRING: ada1
FREENAS-MIB::hddTempDevice.6 = STRING: nvd0
FREENAS-MIB::hddTempDevice.7 = STRING: ada4
FREENAS-MIB::hddTempValue.1 = Gauge32: 43000
FREENAS-MIB::hddTempValue.2 = Gauge32: 41000
FREENAS-MIB::hddTempValue.3 = Gauge32: 40000
FREENAS-MIB::hddTempValue.4 = Gauge32: 38000
FREENAS-MIB::hddTempValue.5 = Gauge32: 38000
FREENAS-MIB::hddTempValue.6 = Gauge32: 56000
FREENAS-MIB::hddTempValue.7 = Gauge32: 42000

Setup SNMP exporter

This assumes that SNMP exporter runs as a service.

Use the generator.yml as source file for snmp_exporter and store it under ~/truenas-snmp directory.

cp -R truenas-mibs/* ~/.snmp/mibs/
cd ~/truenas-snmp
~/golang/bin/generator generate

This should generate the snmp.yml file. Append the file to the snmp.yml file used by the SNMP exporter service and restart the SNMP exporter service:

sudo systemctl restart snmp_exporter

Now test if the changes were properly put into effect:

curl 'http://localhost:9116/snmp?target=nas.local&module=freenas'

Setup Prometheus

Add the following to the scrape_configs section in /etc/prometheus/prometheus.yml :

  - job_name: nas
    static_configs:
      - targets:
        - nas.local
    scrape_interval: 15s
    metrics_path: /snmp
    params:
      module: [freenas]
    relabel_configs:
     - source_labels: [__address__]
       target_label: __param_target
     - source_labels: [__param_target]
       target_label: instance
     - target_label: __address__
       replacement: 127.0.0.1:9116

and restart the service:

sudo systemctl restart prometheus

Setup Grafana dashboard

Provision Grafana with the NAS JSON file.

The TrueNAS logo needs to be stored on the Grafana instance itself per https://community.grafana.com/t/using-text-panel-to-show-image-where-to-store-image/6642

sudo mv /tmp/TrueNAS\ logo.png /usr/share/grafana/public/img/TrueNAS-logo.png

Note on alerting

It would be nice if single stat or gauge panels supported alerting however currently (2022) this is not the case. There were issues filed and one PR however all were closed to much despair of users.

Raw
CPU-temp-alert.yaml
apiVersion: 1
groups:
- orgId: 1
name: NAS
folder: General Alerting
interval: 1m
rules:
- uid: rCSUcJM4z
title: HDD temperature
condition: C
data:
- refId: A
relativeTimeRange:
from: 86400
to: 0
datasourceUid: "000000008"
model:
datasource:
type: prometheus
uid: "000000008"
editorMode: code
expr: hddTempValue / 1000
interval: ""
intervalMs: 15000
legendFormat: '{{hddTempDevice}}'
maxDataPoints: 43200
range: true
refId: A
- refId: B
datasourceUid: __expr__
model:
conditions:
- evaluator:
params:
- 0
- 0
type: gt
operator:
type: and
query:
params: []
reducer:
params: []
type: avg
type: query
datasource:
name: Expression
type: __expr__
uid: __expr__
expression: A
intervalMs: 1000
maxDataPoints: 43200
reducer: mean
refId: B
type: reduce
- refId: C
datasourceUid: __expr__
model:
conditions:
- evaluator:
params:
- 60
- 0
type: gt
operator:
type: and
query:
params: []
reducer:
params: []
type: avg
type: query
datasource:
name: Expression
type: __expr__
uid: __expr__
expression: B
intervalMs: 1000
maxDataPoints: 43200
refId: C
type: threshold
dashboardUid: _IvT0TM4z
panelId: 2
noDataState: NoData
execErrState: Alerting
for: 5m
annotations:
__dashboardUid__: _IvT0TM4z
__panelId__: "2"
summary: HDD {{ $labels.hddTempDevice }} temperature over 60C
isPaused: false
- uid: cevs9u4td3i80e
title: CPU temperature
condition: D
data:
- refId: B
relativeTimeRange:
from: 86400
to: 0
datasourceUid: "000000008"
model:
adhocFilters: []
datasource:
type: prometheus
uid: "000000008"
editorMode: code
expr: lmTempSensorsValue{lmTempSensorsDevice=~"CPU.*"} / 1000
instant: false
interval: ""
intervalMs: 15000
legendFormat: '{{lmTempSensorsDevice}}'
maxDataPoints: 43200
range: true
refId: B
- refId: C
datasourceUid: __expr__
model:
conditions:
- evaluator:
params: []
type: gt
operator:
type: and
query:
params:
- C
reducer:
params: []
type: last
type: query
datasource:
type: __expr__
uid: __expr__
expression: B
intervalMs: 1000
maxDataPoints: 43200
reducer: mean
refId: C
type: reduce
- refId: D
datasourceUid: __expr__
model:
conditions:
- evaluator:
params:
- 50
type: gt
operator:
type: and
query:
params:
- D
reducer:
params: []
type: last
type: query
datasource:
type: __expr__
uid: __expr__
expression: C
intervalMs: 1000
maxDataPoints: 43200
refId: D
type: threshold
dashboardUid: _IvT0TM4z
panelId: 2
noDataState: NoData
execErrState: Error
for: 1m
annotations:
__dashboardUid__: _IvT0TM4z
__panelId__: "2"
labels: {}
isPaused: false
notification_settings:
receiver: autogen-contact-point-default
Raw
generator.yml
modules:
freenas:
walk:
- zpoolDescr
- memTotalFree
- memTotalReal
- memAvailReal
#- ssCpuRawIdle
- ssCpuIdle
- laEntry # load average
# host resource metrics
- hrSystemUptime
- hrSystemProcesses
- hrSystemMaxProcesses
- hrMemorySize
- hrStorageSize
- hrStorageUsed
- hrProcessorLoad # non idle percent past minute
# interface metrics
- ifAdminStatus # 1=up,2=down,3=testing
- ifOperStatus # 1=up,2=down,3=testing,4=unknown,5=dormant,6=notPresent,7=lowerLayerDown
- ifLastChange
- ifInDiscards
- ifInErrors
- ifOutDiscards
- ifOutErrors
- ifHCInOctets
- ifHCOutOctets
# tcp metrics
- tcpMaxConn
- tcpActiveOpens
- tcpPassiveOpens
- tcpEstabResets
- tcpCurrEstab
#- zpoolDescr #.3 = STRING: oricoA
- zpoolSize #.1 = INTEGER: 25034752
- zpoolAllocationUnits
- zpoolUsed #.1 = INTEGER: 366581
- zpoolAvailable #.4 = INTEGER: 899712777
- zpoolHealth # online(0), degraded(1), faulted(2), offline(3), unavail(4), removed(5)
#- zvolDescr #.1 = STRING: nvme/esxi6-flash-ds
- zvolSize #.1 = INTEGER: 131072004
- zvolUsed #.1 = INTEGER: 12742140
- zvolAllocationUnits
- zvolAvailable #.1 = INTEGER: 208719694
- zvolReferenced #.1 = INTEGER: 7553203
#- datasetDescr #.1 = STRING: boot-pool/ROOT
- datasetAllocationUnits
- datasetSize #.1 = INTEGER: 24251018
- datasetUsed #.1 = INTEGER: 365180
- datasetAvailable #.1 = INTEGER: 23885838
#- hddTempDevice # string da0 da1 ada0 nvd0
- hddTempValue # 41000
- lmTempSensorsValue
- zfsArcSize #.0 = Gauge32: 26288777
- zfsArcMeta #.0 = Gauge32: 638834
- zfsArcData #.0 = Gauge32: 25647720
- zfsArcHits #.0 = Gauge32: 2127255356
- zfsArcMisses #.0 = Gauge32: 24503533
- zfsArcC #.0 = Gauge32: 26335347
- zfsArcP #.0 = Gauge32: 24565288
- zfsArcMissPercent #.0 = STRING: 0.22811610704906116
- zfsArcCacheHitRatio #.0 = STRING: 99.77
- zfsArcCacheMissRatio #.0 = STRING: 0.23
- zfsL2ArcHits #.0 = Counter32: 4629098
- zfsL2ArcMisses #.0 = Counter32: 19863879
- zfsL2ArcRead #.0 = Counter32: 40120202
- zfsL2ArcWrite #.0 = Counter32: 3900941555
- zfsL2ArcSize #.0 = Gauge32: 205686406
#lookups:
#- old_index: ifIndex
# new_index: ifName
lookups:
- source_indexes: [ifIndex]
lookup: ifName
- source_indexes: [zvolIndex]
lookup: zvolDescr
- source_indexes: [zpoolIndex]
lookup: zpoolDescr
- source_indexes: [datasetIndex]
lookup: datasetDescr
- source_indexes: [hddTempIndex]
lookup: hddTempDevice
- source_indexes: [lmTempSensorsIndex]
lookup: lmTempSensorsDevice
- source_indexes: [laIndex] #loadAverageIndex
lookup: laNames
- source_indexes: [hrStorageIndex]
lookup: hrStorageDescr
- source_indexes: [hrDeviceIndex]
lookup: hrDeviceDescr
version: 3
auth:
username: "grafana"
security_level: authPriv
auth_protocol: SHA
password: "INSERT_AUTH_PASSWORD_HERE"
priv_protocol: AES
priv_password: "INSERT_PRIV_PASSWORD_HERE"
Raw
HDD-temp-alert.yaml
apiVersion: 1
groups:
- orgId: 1
name: NAS
folder: General Alerting
interval: 1m
rules:
- uid: rCSUcJM4z
title: HDD temperature
condition: C
data:
- refId: A
relativeTimeRange:
from: 86400
to: 0
datasourceUid: "000000008"
model:
datasource:
type: prometheus
uid: "000000008"
editorMode: code
expr: hddTempValue / 1000
interval: ""
intervalMs: 15000
legendFormat: '{{hddTempDevice}}'
maxDataPoints: 43200
range: true
refId: A
- refId: B
datasourceUid: __expr__
model:
conditions:
- evaluator:
params:
- 0
- 0
type: gt
operator:
type: and
query:
params: []
reducer:
params: []
type: avg
type: query
datasource:
name: Expression
type: __expr__
uid: __expr__
expression: A
intervalMs: 1000
maxDataPoints: 43200
reducer: mean
refId: B
type: reduce
- refId: C
datasourceUid: __expr__
model:
conditions:
- evaluator:
params:
- 60
- 0
type: gt
operator:
type: and
query:
params: []
reducer:
params: []
type: avg
type: query
datasource:
name: Expression
type: __expr__
uid: __expr__
expression: B
intervalMs: 1000
maxDataPoints: 43200
refId: C
type: threshold
dashboardUid: _IvT0TM4z
panelId: 2
noDataState: NoData
execErrState: Alerting
for: 5m
annotations:
__dashboardUid__: _IvT0TM4z
__panelId__: "2"
summary: HDD {{ $labels.hddTempDevice }} temperature over 60C
labels: {}
isPaused: false
- uid: cevs9u4td3i80e
title: CPU temperature
condition: D
data:
- refId: B
relativeTimeRange:
from: 86400
to: 0
datasourceUid: "000000008"
model:
adhocFilters: []
datasource:
type: prometheus
uid: "000000008"
editorMode: code
expr: lmTempSensorsValue{lmTempSensorsDevice=~"CPU.*"} / 1000
instant: false
interval: ""
intervalMs: 15000
legendFormat: '{{lmTempSensorsDevice}}'
maxDataPoints: 43200
range: true
refId: B
- refId: C
datasourceUid: __expr__
model:
conditions:
- evaluator:
params: []
type: gt
operator:
type: and
query:
params:
- C
reducer:
params: []
type: last
type: query
datasource:
type: __expr__
uid: __expr__
expression: B
intervalMs: 1000
maxDataPoints: 43200
reducer: last
refId: C
type: reduce
- refId: D
datasourceUid: __expr__
model:
conditions:
- evaluator:
params:
- 50
type: gt
operator:
type: and
query:
params:
- D
reducer:
params: []
type: last
type: query
datasource:
type: __expr__
uid: __expr__
expression: C
intervalMs: 1000
maxDataPoints: 43200
refId: D
type: threshold
dashboardUid: _IvT0TM4z
panelId: 2
noDataState: NoData
execErrState: Error
for: 1m
annotations:
__dashboardUid__: _IvT0TM4z
__panelId__: "2"
isPaused: false
notification_settings:
receiver: autogen-contact-point-default
Raw
NAS-dashboard.json
{
"annotations": {
"list": [
{
"builtIn": 1,
"datasource": {
"type": "grafana",
"uid": "-- Grafana --"
},
"enable": true,
"hide": true,
"iconColor": "rgba(0, 211, 255, 1)",
"name": "Annotations & Alerts",
"target": {
"limit": 100,
"matchAny": false,
"tags": [],
"type": "dashboard"
},
"type": "dashboard"
}
]
},
"editable": true,
"fiscalYearStartMonth": 0,
"graphTooltip": 0,
"id": 10,
"links": [],
"panels": [
{
"datasource": {
"type": "prometheus",
"uid": "000000008"
},
"fieldConfig": {
"defaults": {
"color": {
"mode": "palette-classic"
},
"custom": {
"axisBorderShow": false,
"axisCenteredZero": false,
"axisColorMode": "text",
"axisLabel": "",
"axisPlacement": "auto",
"barAlignment": 0,
"barWidthFactor": 0.6,
"drawStyle": "line",
"fillOpacity": 0,
"gradientMode": "none",
"hideFrom": {
"legend": false,
"tooltip": false,
"viz": false
},
"insertNulls": false,
"lineInterpolation": "linear",
"lineWidth": 1,
"pointSize": 5,
"scaleDistribution": {
"type": "linear"
},
"showPoints": "auto",
"spanNulls": false,
"stacking": {
"group": "A",
"mode": "none"
},
"thresholdsStyle": {
"mode": "off"
}
},
"mappings": [],
"thresholds": {
"mode": "absolute",
"steps": [
{
"color": "green"
},
{
"color": "red",
"value": 80
}
]
},
"unit": "celsius"
},
"overrides": []
},
"gridPos": {
"h": 9,
"w": 12,
"x": 0,
"y": 0
},
"id": 2,
"options": {
"legend": {
"calcs": [],
"displayMode": "list",
"placement": "bottom",
"showLegend": true
},
"tooltip": {
"hideZeros": false,
"mode": "single",
"sort": "none"
}
},
"pluginVersion": "11.6.0",
"targets": [
{
"datasource": {
"type": "prometheus",
"uid": "000000008"
},
"editorMode": "code",
"expr": "hddTempValue / 1000",
"hide": true,
"legendFormat": "{{hddTempDevice}}",
"range": true,
"refId": "A"
},
{
"datasource": {
"type": "prometheus",
"uid": "000000008"
},
"editorMode": "code",
"expr": "lmTempSensorsValue / 1000",
"hide": false,
"instant": false,
"legendFormat": "{{lmTempSensorsDevice}}",
"range": true,
"refId": "B"
}
],
"title": "CPU and HDD temperature",
"type": "timeseries"
},
{
"datasource": {
"type": "prometheus",
"uid": "000000008"
},
"fieldConfig": {
"defaults": {
"color": {
"mode": "thresholds"
},
"mappings": [],
"max": 100,
"min": 0,
"thresholds": {
"mode": "absolute",
"steps": [
{
"color": "green"
},
{
"color": "yellow",
"value": 80
},
{
"color": "red",
"value": 90
}
]
},
"unit": "percent"
},
"overrides": []
},
"gridPos": {
"h": 9,
"w": 5,
"x": 12,
"y": 0
},
"id": 6,
"options": {
"minVizHeight": 75,
"minVizWidth": 75,
"orientation": "auto",
"reduceOptions": {
"calcs": [
"lastNotNull"
],
"fields": "",
"values": false
},
"showThresholdLabels": false,
"showThresholdMarkers": true,
"sizing": "auto",
"text": {}
},
"pluginVersion": "11.6.0",
"targets": [
{
"datasource": {
"type": "prometheus",
"uid": "000000008"
},
"editorMode": "code",
"expr": "((zpoolSize{zpoolDescr=\"uloziste\"} - zpoolAvailable{zpoolDescr=\"uloziste\"}) / zpoolSize{zpoolDescr=\"uloziste\"}) * 100",
"legendFormat": "__auto",
"range": true,
"refId": "A"
}
],
"title": "uloziste capacity",
"type": "gauge"
},
{
"datasource": {
"type": "prometheus",
"uid": "000000008"
},
"fieldConfig": {
"defaults": {
"color": {
"mode": "thresholds"
},
"mappings": [],
"thresholds": {
"mode": "absolute",
"steps": [
{
"color": "text"
}
]
},
"unit": "bytes"
},
"overrides": []
},
"gridPos": {
"h": 5,
"w": 4,
"x": 17,
"y": 0
},
"id": 16,
"options": {
"colorMode": "value",
"graphMode": "area",
"justifyMode": "auto",
"orientation": "auto",
"percentChangeColorMode": "standard",
"reduceOptions": {
"calcs": [
"lastNotNull"
],
"fields": "",
"values": false
},
"showPercentChange": false,
"textMode": "auto",
"wideLayout": true
},
"pluginVersion": "11.6.0",
"targets": [
{
"datasource": {
"type": "prometheus",
"uid": "000000008"
},
"editorMode": "code",
"expr": "zpoolAvailable{instance=\"nas.local\", zpoolDescr=\"uloziste\"} * zpoolAllocationUnits{instance=\"nas.local\", zpoolDescr=\"uloziste\"}",
"legendFormat": "__auto",
"range": true,
"refId": "A"
}
],
"title": "uloziste available space",
"type": "stat"
},
{
"fieldConfig": {
"defaults": {},
"overrides": []
},
"gridPos": {
"h": 2,
"w": 3,
"x": 21,
"y": 0
},
"id": 4,
"options": {
"code": {
"language": "plaintext",
"showLineNumbers": false,
"showMiniMap": false
},
"content": "<img src=\"/public/img/TrueNAS-logo.png\">",
"mode": "html"
},
"pluginVersion": "11.6.0",
"title": "",
"type": "text"
},
{
"datasource": {
"type": "prometheus",
"uid": "000000008"
},
"fieldConfig": {
"defaults": {
"color": {
"mode": "thresholds"
},
"mappings": [
{
"options": {
"0": {
"color": "green",
"index": 0,
"text": "OK"
},
"1": {
"color": "red",
"index": 1,
"text": "BAD"
}
},
"type": "value"
}
],
"thresholds": {
"mode": "absolute",
"steps": [
{
"color": "green"
},
{
"color": "red",
"value": 80
}
]
}
},
"overrides": []
},
"gridPos": {
"h": 3,
"w": 3,
"x": 21,
"y": 2
},
"id": 8,
"options": {
"colorMode": "background",
"graphMode": "area",
"justifyMode": "auto",
"orientation": "auto",
"percentChangeColorMode": "standard",
"reduceOptions": {
"calcs": [
"lastNotNull"
],
"fields": "",
"values": false
},
"showPercentChange": false,
"text": {},
"textMode": "value",
"wideLayout": true
},
"pluginVersion": "11.6.0",
"targets": [
{
"datasource": {
"type": "prometheus",
"uid": "000000008"
},
"editorMode": "builder",
"expr": "zpoolHealth{instance=\"nas.local\", zpoolDescr=\"uloziste\"} != bool 0",
"legendFormat": "__auto",
"range": true,
"refId": "A"
}
],
"title": "uloziste status",
"transformations": [
{
"id": "reduce",
"options": {
"includeTimeField": false,
"mode": "reduceFields",
"reducers": [
"last"
]
}
}
],
"type": "stat"
},
{
"datasource": {
"type": "prometheus",
"uid": "000000008"
},
"fieldConfig": {
"defaults": {
"color": {
"mode": "thresholds"
},
"mappings": [],
"thresholds": {
"mode": "absolute",
"steps": [
{
"color": "blue"
}
]
},
"unit": "timeticks"
},
"overrides": []
},
"gridPos": {
"h": 4,
"w": 7,
"x": 17,
"y": 5
},
"id": 18,
"options": {
"colorMode": "none",
"graphMode": "none",
"justifyMode": "auto",
"orientation": "auto",
"percentChangeColorMode": "standard",
"reduceOptions": {
"calcs": [
"lastNotNull"
],
"fields": "",
"values": false
},
"showPercentChange": false,
"textMode": "auto",
"wideLayout": true
},
"pluginVersion": "11.6.0",
"targets": [
{
"datasource": {
"type": "prometheus",
"uid": "000000008"
},
"editorMode": "builder",
"expr": "hrSystemUptime{instance=\"nas.local\"}",
"legendFormat": "__auto",
"range": true,
"refId": "A"
}
],
"title": "system uptime",
"type": "stat"
},
{
"datasource": {
"type": "prometheus",
"uid": "000000008"
},
"fieldConfig": {
"defaults": {
"color": {
"mode": "palette-classic"
},
"custom": {
"axisBorderShow": false,
"axisCenteredZero": false,
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