Prometheus監控 Redis & Redis Cluster 說明
阿新 • • 發佈：2020-04-23
說明
在前面的Prometheus + Grafana 部署說明之「安裝」文章裡，大致介紹說明了Prometheus和Grafana的一些安裝使用，現在開始如何始部署Prometheus+Grafana 來監控Redis
部署
在之前介紹的Prometheus系列文章裡，已經瞭解了Prometheus是通過拉取的方式來儲存監控資料的，可以自己寫一個服務來去Redis來獲取需要監控的相關指標，也可以直接用現成的exporter，如GitHub上redis_exporter，本文對Redis的監控是通過該匯出器進行的。
下載&解壓：
#下載
wget https://github.com/oliver006/redis_exporter/releases/download/v1.3.5/redis_exporter-v1.3.5.linux-amd64.tar.gz#解壓
tar xvf redis_exporter-v1.3.5.linux-amd64.tar.gz
注意：redis_exporter 版本從 0.x to 1.x 有了很大的改變：為了使redis_exporter更緊密地遵循“編寫匯出器的最佳實踐”，不再直接支援配置（和抓取）多個Redis例項，而是將這一任務推給了Prometheus伺服器，具體情況可以看作者說明。如果需要抓取多個例項，請檢視如何配置Prometheus伺服器以刮取多個例項。
但如果已經按照Prometheus專案的推薦使用了匯出器，並且僅scrape了一個例項（例如使用--redis.addr和--redis.password 標誌），那麼沒有任何改變。
準備：
1）在開啟redis_exporter [v1.3.5]之前，需要先配置Prometheus，按照Prometheus + Grafana 部署說明之「安裝」裝好Prometheus之後，修改其配置檔案。本次示例是通過檔案服務發現來處理的，因為監控服務的同時也要監控系統相關的指標，所以需要node_exporter和redis_exporter。檔案發現機制有2種方式：exporter配置可以放到一個檔案，也可以為每個例項單獨配置檔案。如放到一個配置檔案：
① 多例項相同密碼的抓取（只需要一個redis-exporter），叢集資訊：
3節點無從，密碼 abc 192.168.163.132、133、134 -- 6379 192.168.163.132、133、134 -- 6380
1.1 exporter配置放到一個檔案的相關配置：
prometheus.yml：
global:
scrape_interval: 10s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
evaluation_interval: 10s # Evaluate rules every 15 seconds. The default is every 1 minute.
alerting:
alertmanagers:
- static_configs:
- targets:
# - alertmanager:9093
rule_files:
# - "first_rules.yml"
# - "second_rules.yml"
scrape_configs:
- job_name: 'prometheus'
static_configs:
- targets: ['192.168.163.132:9099']
- job_name: 'node_exporter'
scrape_interval: 1s
file_sd_configs:
- files:
- targets/node/nodes-instances.json
refresh_interval: 10s
relabel_configs:
- action: replace
source_labels: ['__address__']
regex: (.*):(.*)
replacement: $1
target_label: hostname
- action: labeldrop
regex: __meta_filepath
- job_name: 'redis_exporter'
scrape_interval: 1s
file_sd_configs:
- files:
- targets/redis/redis-instances.json
metrics_path: /scrape
relabel_configs:
- action: replace
source_labels: ['__address__']
regex: (.*):(.*)
replacement: $1
target_label: hostip
- source_labels: [__address__]
target_label: __param_target
- source_labels: [__param_target]
target_label: instance
- target_label: __address__
replacement: 192.168.163.132:9123
View Code
nodes-instances.json：
[
{
"targets": [ "192.168.163.132:9199", "192.168.163.133:9199","192.168.163.134:9199"]
}
]
View Code
redis-instances.json：
[
{
"targets": [ "192.168.163.132:6379","192.168.163.133:6379","192.168.163.134:6379"],
"labels": {"env":"test","cluster":"test_one"}
},
{
"targets": [ "192.168.163.132:6380","192.168.163.133:6380","192.168.163.134:6380"],
"labels": {"env":"test","cluster":"test_two"}
}
]
View Code
以後如果有相關的例項叢集包括主從加進來，只要修改以上2個exporter檔案即可。最後開啟exporter：
#各個節點執行 node-exporter： ./node_exporter --web.listen-address=:9199 #指定節點執行 redis_exporter: ./redis_exporter -redis-only-metrics -redis.password abc -web.listen-address=:9123
1.2 exporter配置獨立存放的相關配置：
prometheus.yml：
global:
scrape_interval: 10s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
evaluation_interval: 10s # Evaluate rules every 15 seconds. The default is every 1 minute.
alerting:
alertmanagers:
- static_configs:
- targets:
# - alertmanager:9093
rule_files:
# - "first_rules.yml"
# - "second_rules.yml"
scrape_configs:
- job_name: 'prometheus'
static_configs:
- targets: ['192.168.163.132:9099']
- job_name: 'node_exporter'
scrape_interval: 1s
file_sd_configs:
- files:
- targets/node/*.yml
refresh_interval: 10s
relabel_configs:
- action: replace
source_labels: ['__address__']
regex: (.*):(.*)
replacement: $1
target_label: hostname
- action: labeldrop
regex: __meta_filepath
- job_name: 'redis_exporter'
scrape_interval: 1s
file_sd_configs:
- files:
- targets/redis/*.yml
metrics_path: /scrape
relabel_configs:
- action: replace
source_labels: ['__address__']
regex: (.*):(.*)
replacement: $1
target_label: hostip
- source_labels: [__address__]
target_label: __param_target
- source_labels: [__param_target]
target_label: instance
- target_label: __address__
replacement: 192.168.163.132:9123
View Code
targets/node/*.yml：
# ls -lh /etc/prometheus/targets/node/*.yml
-rw-r--r-- 1 root root 117 4月 18 14:51 /etc/prometheus/targets/node/test2_node_exporter.yml
-rw-r--r-- 1 root root 117 4月 18 14:51 /etc/prometheus/targets/node/test3_node_exporter.yml
-rw-r--r-- 1 root root 117 4月 18 14:51 /etc/prometheus/targets/node/test4_node_exporter.yml
# cat /etc/prometheus/targets/node/test2_node_exporter.yml
[
{
"targets": ["192.168.163.132:9199"],
"labels": {"env":"test","alias":"test2"}
}
]
# cat /etc/prometheus/targets/node/test3_node_exporter.yml
[
{
"targets": ["192.168.163.133:9199"],
"labels": {"env":"test","alias":"test3"}
}
]
# cat /etc/prometheus/targets/node/test4_node_exporter.yml
[
{
"targets": ["192.168.163.134:9199"],
"labels": {"env":"test","alias":"test4"}
}
]
View Code
targets/redis/*.yml：
# ls -lh /etc/prometheus/targets/redis/*.yml
-rw-r--r-- 1 root root 121 4月 18 13:14 /etc/prometheus/targets/redis/test2_6379_redis_exporter.yml
-rw-r--r-- 1 root root 121 4月 18 13:14 /etc/prometheus/targets/redis/test2_6380_redis_exporter.yml
-rw-r--r-- 1 root root 121 4月 18 13:14 /etc/prometheus/targets/redis/test3_6379_redis_exporter.yml
-rw-r--r-- 1 root root 121 4月 18 13:15 /etc/prometheus/targets/redis/test3_6380_redis_exporter.yml
-rw-r--r-- 1 root root 121 4月 18 13:14 /etc/prometheus/targets/redis/test4_6379_redis_exporter.yml
-rw-r--r-- 1 root root 121 4月 18 13:15 /etc/prometheus/targets/redis/test4_6380_redis_exporter.yml
# cat /etc/prometheus/targets/redis/test2_6379_redis_exporter.yml
[
{
"targets": [ "192.168.163.132:6379"],
"labels": {"env":"test","cluster":"test_one","alias":"test2"}
}
]
# cat /etc/prometheus/targets/redis/test3_6379_redis_exporter.yml
[
{
"targets": [ "192.168.163.133:6379"],
"labels": {"env":"test","cluster":"test_one","alias":"test3"}
}
]
# cat /etc/prometheus/targets/redis/test4_6379_redis_exporter.yml
[
{
"targets": [ "192.168.163.134:6379"],
"labels": {"env":"test","cluster":"test_one","alias":"test4"}
}
]
# cat /etc/prometheus/targets/redis/test2_6380_redis_exporter.yml
[
{
"targets": [ "192.168.163.132:6380"],
"labels": {"env":"test","cluster":"test_two","alias":"test2"}
}
]
# cat /etc/prometheus/targets/redis/test3_6380_redis_exporter.yml
[
{
"targets": [ "192.168.163.133:6380"],
"labels": {"env":"test","cluster":"test_two","alias":"test3"}
}
]
# cat /etc/prometheus/targets/redis/test4_6380_redis_exporter.yml
[
{
"targets": [ "192.168.163.134:6380"],
"labels": {"env":"test","cluster":"test_two","alias":"test4"}
}
]
View Code
以後如果有相關的例項叢集加進來包括主從，只要新增2類exporter檔案即可。最後開啟exporter：
#各個節點執行 node-exporter： ./node_exporter --web.listen-address=:9199 #指定節點執行 redis_exporter: ./redis_exporter -redis-only-metrics -redis.password abc -web.listen-address=:9123
以上2種通過檔案服務發現的方法，推薦第2個。因為新增的檔案有問題也不影響服務，修改檔案可能會引發問題；並且也可以為各個節點打需要的labels。
最後配置Grafana，效果：
JSON Model：
{
"annotations": {
"list": [
{
"builtIn": 1,
"datasource": "-- Grafana --",
"enable": true,
"hide": true,
"iconColor": "rgba(0, 211, 255, 1)",
"name": "Annotations & Alerts",
"type": "dashboard"
}
]
},
"editable": true,
"gnetId": null,
"graphTooltip": 0,
"id": 13,
"iteration": 1587194136640,
"links": [],
"panels": [
{
"cacheTimeout": null,
"colorBackground": false,
"colorValue": true,
"colors": [
"#299c46",
"rgba(237, 129, 40, 0.89)",
"#d44a3a"
],
"datasource": null,
"description": "叢集個數",
"format": "none",
"gauge": {
"maxValue": 100,
"minValue": 0,
"show": false,
"thresholdLabels": false,
"thresholdMarkers": true
},
"gridPos": {
"h": 3,
"w": 5,
"x": 0,
"y": 0
},
"id": 8,
"interval": null,
"links": [],
"mappingType": 1,
"mappingTypes": [
{
"name": "value to text",
"value": 1
},
{
"name": "range to text",
"value": 2
}
],
"maxDataPoints": 100,
"nullPointMode": "connected",
"nullText": null,
"postfix": "",
"postfixFontSize": "50%",
"prefix": "",
"prefixFontSize": "50%",
"rangeMaps": [
{
"from": "null",
"text": "N/A",
"to": "null"
}
],
"sparkline": {
"fillColor": "rgba(31, 118, 189, 0.18)",
"full": false,
"lineColor": "rgb(31, 120, 193)",
"show": false,
"ymax": null,
"ymin": null
},
"tableColumn": "",
"targets": [
{
"expr": "count(count(redis_up{cluster=~\"$cluster\"}>0) by (cluster))",
"interval": "",
"legendFormat": "",
"refId": "A"
}
],
"thresholds": "",
"timeFrom": null,
"timeShift": null,
"title": "叢集個數",
"type": "singlestat",
"valueFontSize": "100%",
"valueMaps": [
{
"op": "=",
"text": "N/A",
"value": "null"
}
],
"valueName": "current"
},
{
"cacheTimeout": null,
"colorBackground": false,
"colorValue": true,
"colors": [
"#299c46",
"rgba(237, 129, 40, 0.89)",
"#d44a3a"
],
"datasource": null,
"description": "叢集節點數量",
"format": "none",
"gauge": {
"maxValue": 100,
"minValue": 0,
"show": false,
"thresholdLabels": false,
"thresholdMarkers": true
},
"gridPos": {
"h": 3,
"w": 5,
"x": 5,
"y": 0
},
"id": 4,
"interval": null,
"links": [],
"mappingType": 1,
"mappingTypes": [
{
"name": "value to text",
"value": 1
},
{
"name": "range to text",
"value": 2
}
],
"maxDataPoints": 100,
"nullPointMode": "connected",
"nullText": null,
"postfix": "",
"postfixFontSize": "50%",
"prefix": "",
"prefixFontSize": "50%",
"rangeMaps": [
{
"from": "null",
"text": "N/A",
"to": "null"
}
],
"sparkline": {
"fillColor": "rgba(31, 118, 189, 0.18)",
"full": false,
"lineColor": "rgb(31, 120, 193)",
"show": false,
"ymax": null,
"ymin": null
},
"tableColumn": "",
"targets": [
{
"expr": "count(redis_up{cluster=~\"$cluster\"})",
"interval": "",
"legendFormat": "",
"refId": "A"
}
],
"thresholds": "",
"timeFrom": null,
"timeShift": null,
"title": "叢集節點數",
"type": "singlestat",
"valueFontSize": "100%",
"valueMaps": [
{
"op": "=",
"text": "N/A",
"value": "null"
}
],
"valueName": "current"
},
{
"cacheTimeout": null,
"colorBackground": false,
"colorValue": true,
"colors": [
"#299c46",
"rgba(237, 129, 40, 0.89)",
"#d44a3a"
],
"datasource": null,
"description": "叢集活躍節點數量",
"format": "none",
"gauge": {
"maxValue": 100,
"minValue": 0,
"show": false,
"thresholdLabels": false,
"thresholdMarkers": true
},
"gridPos": {
"h": 3,
"w": 4,
"x": 10,
"y": 0
},
"id": 6,
"interval": null,
"links": [],
"mappingType": 1,
"mappingTypes": [
{
"name": "value to text",
"value": 1
},
{
"name": "range to text",
"value": 2
}
],
"maxDataPoints": 100,
"nullPointMode": "connected",
"nullText": null,
"postfix": "",
"postfixFontSize": "50%",
"prefix": "",
"prefixFontSize": "50%",
"rangeMaps": [
{
"from": "null",
"text": "N/A",
"to": "null"
}
],
"sparkline": {
"fillColor": "rgba(31, 118, 189, 0.18)",
"full": false,
"lineColor": "rgb(31, 120, 193)",
"show": false,
"ymax": null,
"ymin": null
},
"tableColumn": "",
"targets": [
{
"expr": "count(redis_up{cluster=~\"$cluster\"}>0)",
"interval": "",
"legendFormat": "",
"refId": "A"
}
],
"thresholds": "",
"timeFrom": null,
"timeShift": null,
"title": "叢集活躍節點數",
"type": "singlestat",
"valueFontSize": "100%",
"valueMaps": [
{
"op": "=",
"text": "N/A",
"value": "null"
}
],
"valueName": "current"
},
{
"cacheTimeout": null,
"colorBackground": false,
"colorPrefix": false,
"colorValue": true,
"colors": [
"#299c46",
"rgba(237, 129, 40, 0.89)",
"#d44a3a"
],
"datasource": null,
"description": "主節點數量",
"format": "none",
"gauge": {
"maxValue": 100,
"minValue": 0,
"show": false,
"thresholdLabels": false,
"thresholdMarkers": true
},
"gridPos": {
"h": 3,
"w": 5,
"x": 14,
"y": 0
},
"id": 10,
"interval": null,
"links": [],
"mappingType": 1,
"mappingTypes": [
{
"name": "value to text",
"value": 1
},
{
"name": "range to text",
"value": 2
}
],
"maxDataPoints": 100,
"nullPointMode": "connected",
"nullText": null,
"postfix": "",
"postfixFontSize": "50%",
"prefix": "",
"prefixFontSize": "50%",
"rangeMaps": [
{
"from": "null",
"text": "N/A",
"to": "null"
}
],
"sparkline": {
"fillColor": "rgba(31, 118, 189, 0.18)",
"full": false,
"lineColor": "rgb(31, 120, 193)",
"show": false,
"ymax": null,
"ymin": null
},
"tableColumn": "",
"targets": [
{
"expr": "count(redis_instance_info{cluster=~\"$cluster\", role=\"master\"})",
"interval": "",
"legendFormat": "",
"refId": "A"
}
],
"thresholds": "",
"timeFrom": null,
"timeShift": null,
"title": "主節點個數",
"type": "singlestat",
"valueFontSize": "100%",
"valueMaps": [
{
"op": "=",
"text": "N/A",
"value": "null"
}
],
"valueName": "current"
},
{
"cacheTimeout": null,
"colorBackground": false,
"colorValue": true,
"colors": [
"#299c46",
"rgba(237, 129, 40, 0.89)",
"#d44a3a"
],
"datasource": null,
"description": "從節點數量",
"format": "none",
"gauge": {
"maxValue": 100,
"minValue": 0,
"show": false,
"thresholdLabels": false,
"thresholdMarkers": true
},
"gridPos": {
"h": 3,
"w": 5,
"x": 19,
"y": 0
},
"id": 12,
"interval": null,
"links": [],
"mappingType": 1,
"mappingTypes": [
{
"name": "value to text",
"value": 1
},
{
"name": "range to text",
"value": 2
}
],
"maxDataPoints": 100,
"nullPointMode": "connected",
"nullText": null,
"postfix": "",
"postfixFontSize": "50%",
"prefix": "",
"prefixFontSize": "50%",
"rangeMaps": [
{
"from": "null",
"text": "N/A",
"to": "null"
}
],
"sparkline": {
"fillColor": "rgba(31, 118, 189, 0.18)",
"full": false,
"lineColor": "rgb(31, 120, 193)",
"show": false,
"ymax": null,
"ymin": null
},
"tableColumn": "",
"targets": [
{
"expr": "count(redis_instance_info{cluster=~\"$cluster\", role=\"slave\"})",
"interval": "",
"legendFormat": "",
"refId": "A"
}
],
"thresholds": "",
"timeFrom": null,
"timeShift": null,
"title": "從節點個數",
"type": "singlestat",
"valueFontSize": "100%",
"valueMaps": [
{
"op": "=",
"text": "N/A",
"value": "null"
}
],
"valueName": "current"
},
{
"aliasColors": {},
"bars": false,
"dashLength": 10,
"dashes": false,
"datasource": null,
"description": "Redus Cluster OPS指標",
"fill": 1,
"fillGradient": 0,
"gridPos": {
"h": 8,
"w": 12,
"x": 0,
"y": 3
},
"hiddenSeries": false,
"id": 16,
"legend": {
"avg": false,
"current": false,
"max": false,
"min": false,
"show": true,
"total": false,
"values": false
},
"lines": true,
"linewidth": 1,
"nullPointMode": "null",
"options": {
"dataLinks": []
},
"percentage": false,
"pointradius": 2,
"points": false,
"renderer": "flot",
"seriesOverrides": [],
"spaceLength": 10,
"stack": false,
"steppedLine": false,
"targets": [
{
"expr": "ceil(sum(rate(redis_commands_processed_total{cluster=~\"$cluster\",instance=~\"$master\"}[$interval])) by (cluster))",
"interval": "5s",
"legendFormat": "{{cluster}}",
"refId": "A"
}
],
"thresholds": [],
"timeFrom": null,
"timeRegions": [],
"timeShift": null,
"title": "Redis Cluster OPS",
"tooltip": {
"shared": true,
"sort": 0,
"value_type": "individual"
},
"type": "graph",
"xaxis": {
"buckets": null,
"mode": "time",
"name": null,
"show": true,
"values": []
},
"yaxes": [
{
"format": "short",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
},
{
"format": "short",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
}
],
"yaxis": {
"align": false,
"alignLevel": null
}
},
{
"aliasColors": {},
"bars": false,
"dashLength": 10,
"dashes": false,
"datasource": null,
"description": "Redis 記憶體使用大小值",
"fill": 1,
"fillGradient": 0,
"gridPos": {
"h": 8,
"w": 12,
"x": 12,
"y": 3
},
"hiddenSeries": false,
"id": 18,
"legend": {
"avg": false,
"current": false,
"max": false,
"min": false,
"show": true,
"total": false,
"values": false
},
"lines": true,
"linewidth": 1,
"nullPointMode": "null",
"options": {
"dataLinks": []
},
"percentage": false,
"pointradius": 2,
"points": false,
"renderer": "flot",
"seriesOverrides": [],
"spaceLength": 10,
"stack": false,
"steppedLine": false,
"targets": [
{
"expr": "redis_memory_used_bytes{instance=~\"$instance\"} ",
"interval": "5s",
"legendFormat": "{{instance}}",
"refId": "A"
}
],
"thresholds": [],
"timeFrom": null,
"timeRegions": [],
"timeShift": null,
"title": "Redis 記憶體使用大小",
"tooltip": {
"shared": true,
"sort": 0,
"value_type": "individual"
},
"type": "graph",
"xaxis": {
"buckets": null,
"mode": "time",
"name": null,
"show": true,
"values": []
},
"yaxes": [
{
"format": "bytes",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
},
{
"format": "short",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
}
],
"yaxis": {
"align": false,
"alignLevel": null
}
},
{
"aliasColors": {},
"bars": false,
"dashLength": 10,
"dashes": false,
"datasource": null,
"description": "Redis Server CPU使用率",
"fill": 1,
"fillGradient": 0,
"gridPos": {
"h": 8,
"w": 12,
"x": 0,
"y": 11
},
"hiddenSeries": false,
"id": 14,
"legend": {
"avg": false,
"current": false,
"max": false,
"min": false,
"show": true,
"total": false,
"values": false
},
"lines": true,
"linewidth": 1,
"nullPointMode": "null",
"options": {
"dataLinks": []
},
"percentage": false,
"pointradius": 2,
"points": false,
"renderer": "flot",
"seriesOverrides": [],
"spaceLength": 10,
"stack": false,
"steppedLine": false,
"targets": [
{
"expr": "100* (rate(redis_cpu_sys_seconds_total{instance=~\"$instance\"}[$interval]) + rate(redis_cpu_user_seconds_total{instance=~\"$instance\"}[$interval]))",
"interval": "5s",
"legendFormat": "{{instance}}",
"refId": "A"
}
],
"thresholds": [],
"timeFrom": null,
"timeRegions": [],
"timeShift": null,
"title": "Redis CPU使用率",
"tooltip": {
"shared": true,
"sort": 0,
"value_type": "individual"
},
"type": "graph",
"xaxis": {
"buckets": null,
"mode": "time",
"name": null,
"show": true,
"values": []
},
"yaxes": [
{
"format": "percent",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
},
{
"format": "short",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
}
],
"yaxis": {
"align": false,
"alignLevel": null
}
},
{
"aliasColors": {},
"bars": false,
"dashLength": 10,
"dashes": false,
"datasource": null,
"description": "Redis 記憶體使用率",
"fill": 1,
"fillGradient": 0,
"gridPos": {
"h": 8,
"w": 12,
"x": 12,
"y": 11
},
"hiddenSeries": false,
"id": 20,
"legend": {
"avg": false,
"current": false,
"max": false,
"min": false,
"show": true,
"total": false,
"values": false
},
"lines": true,
"linewidth": 1,
"nullPointMode": "null",
"options": {
"dataLinks": []
},
"percentage": false,
"pointradius": 2,
"points": false,
"renderer": "flot",
"seriesOverrides": [],
"spaceLength": 10,
"stack": false,
"steppedLine": false,
"targets": [
{
"expr": "(redis_memory_used_bytes{instance=~\"$instance\"} / redis_config_maxmemory{instance=~\"$instance\"}) * 100",
"interval": "5s",
"legendFormat": "{{instance}}",
"refId": "A"
}
],
"thresholds": [],
"timeFrom": null,
"timeRegions": [],
"timeShift": null,
"title": "Redis 記憶體使用率",
"tooltip": {
"shared": true,
"sort": 0,
"value_type": "individual"
},
"type": "graph",
"xaxis": {
"buckets": null,
"mode": "time",
"name": null,
"show": true,
"values": []
},
"yaxes": [
{
"format": "percent",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
},
{
"format": "short",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
}
],
"yaxis": {
"align": false,
"alignLevel": null
}
},
{
"aliasColors": {},
"bars": false,
"dashLength": 10,
"dashes": false,
"datasource": null,
"description": "各個節點系統CPU使用率",
"fill": 1,
"fillGradient": 0,
"gridPos": {
"h": 8,
"w": 12,
"x": 0,
"y": 19
},
"hiddenSeries": false,
"id": 24,
"legend": {
"avg": false,
"current": false,
"max": false,
"min": false,
"show": true,
"total": false,
"values": false
},
"lines": true,
"linewidth": 1,
"nullPointMode": "null",
"options": {
"dataLinks": []
},
"percentage": false,
"pointradius": 2,
"points": false,
"renderer": "flot",
"seriesOverrides": [],
"spaceLength": 10,
"stack": false,
"steppedLine": false,
"targets": [
{
"expr": "topk(3,clamp_max((avg by (hostname,mode) ((clamp_max(rate(node_cpu_seconds_total{hostname=~\"$host\",mode!=\"idle\"}[$interval]),1)) or (clamp_max(irate(node_cpu_seconds_total{hostname=~\"$host\",mode!=\"idle\"}[5m]),1)) ))*100,100))",
"hide": true,
"interval": "",
"legendFormat": "{{mode}}",
"refId": "A"
},
{
"expr": "1 - avg by (hostname)(rate(node_cpu_seconds_total{hostname=~\"$host\", mode=\"idle\"}[$interval]))",
"interval": "",
"legendFormat": "{{hostname}}",
"refId": "B"
}
],
"thresholds": [],
"timeFrom": null,
"timeRegions": [],
"timeShift": null,
"title": "系統CPU使用率",
"tooltip": {
"shared": true,
"sort": 0,
"value_type": "individual"
},
"type": "graph",
"xaxis": {
"buckets": null,
"mode": "time",
"name": null,
"show": true,
"values": []
},
"yaxes": [
{
"format": "percentunit",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
},
{
"format": "short",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
}
],
"yaxis": {
"align": false,
"alignLevel": null
}
},
{
"aliasColors": {},
"bars": false,
"dashLength": 10,
"dashes": false,
"datasource": null,
"description": "各個節點系統實體記憶體利用率",
"fill": 1,
"fillGradient": 0,
"gridPos": {
"h": 8,
"w": 12,
"x": 12,
"y": 19
},
"hiddenSeries": false,
"id": 30,
"legend": {
"avg": false,
"current": false,
"max": false,
"min": false,
"show": true,
"total": false,
"values": false
},
"lines": true,
"linewidth": 1,
"nullPointMode": "null",
"options": {
"dataLinks": []
},
"percentage": false,
"pointradius": 2,
"points": false,
"renderer": "flot",
"seriesOverrides": [],
"spaceLength": 10,
"stack": false,
"steppedLine": false,
"targets": [
{
"expr": "(node_memory_Cached_bytes{hostname=~\"$host\"} + node_memory_Buffers_bytes{hostname=~\"$host\"} + node_memory_MemFree_bytes{hostname=~\"$host\"})/node_memory_MemTotal_bytes{hostname=~\"$host\"}",
"hide": true,
"interval": "",
"legendFormat": "{{hostname}}",
"refId": "A"
},
{
"expr": "((node_memory_MemTotal_bytes{hostname=~\"$host\"} - (node_memory_MemAvailable_bytes{hostname=~\"$host\"} or (node_memory_MemFree_bytes{hostname=~\"$host\"} + node_memory_Buffers_bytes{hostname=~\"$host\"} + node_memory_Cached_bytes{hostname=~\"$host\"})))*100 / node_memory_MemTotal_bytes{hostname=~\"$host\"})",
"hide": false,
"interval": "",
"legendFormat": "{{hostname}}",
"refId": "B"
}
],
"thresholds": [],
"timeFrom": null,
"timeRegions": [],
"timeShift": null,
"title": "系統實體記憶體利用率",
"tooltip": {
"shared": true,
"sort": 0,
"value_type": "individual"
},
"type": "graph",
"xaxis": {
"buckets": null,
"mode": "time",
"name": null,
"show": true,
"values": []
},
"yaxes": [
{
"format": "percent",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
},
{
"format": "short",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
}
],
"yaxis": {
"align": false,
"alignLevel": null
}
},
{
"aliasColors": {},
"bars": true,
"cacheTimeout": null,
"dashLength": 10,
"dashes": false,
"datasource": null,
"description": "各個節點系統磁碟使用率",
"fill": 1,
"fillGradient": 0,
"gridPos": {
"h": 8,
"w": 12,
"x": 0,
"y": 27
},
"hiddenSeries": false,
"id": 32,
"legend": {
"avg": false,
"current": false,
"max": false,
"min": false,
"show": true,
"total": false,
"values": false
},
"lines": false,
"linewidth": 1,
"links": [],
"nullPointMode": "null",
"options": {
"dataLinks": []
},
"percentage": false,
"pluginVersion": "6.7.2",
"pointradius": 2,
"points": false,
"renderer": "flot",
"seriesOverrides": [],
"spaceLength": 10,
"stack": false,
"steppedLine": false,
"targets": [
{
"expr": "topk(10,max((1 - node_filesystem_avail_bytes{hostname=~\"$host\", fstype!~\"rootfs|selinuxfs|autofs|rpc_pipefs|tmpfs\"} / node_filesystem_size_bytes{hostname=~\"$host\", fstype!~\"rootfs|selinuxfs|autofs|rpc_pipefs|tmpfs\"})*100) by (hostname) > 0)",
"interval": "",
"legendFormat": "{{hostname}}",
"refId": "A"
}
],
"thresholds": [],
"timeFrom": null,
"timeRegions": [],
"timeShift": null,
"title": "系統磁碟使用率",
"tooltip": {
"shared": false,
"sort": 0,
"value_type": "individual"
},
"type": "graph",
"xaxis": {
"buckets": null,
"mode": "series",
"name": null,
"show": true,
"values": [
"current"
]
},
"yaxes": [
{
"format": "percent",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
},
{
"format": "short",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
}
],
"yaxis": {
"align": false,
"alignLevel": null
}
},
{
"aliasColors": {},
"bars": false,
"dashLength": 10,
"dashes": false,
"datasource": null,
"description": "各個節點以及叢集的 KEYS 總數",
"fill": 1,
"fillGradient": 0,
"gridPos": {
"h": 8,
"w": 12,
"x": 12,
"y": 27
},
"hiddenSeries": false,
"id": 22,
"legend": {
"avg": false,
"current": false,
"max": false,
"min": false,
"show": true,
"total": false,
"values": false
},
"lines": true,
"linewidth": 1,
"nullPointMode": "null",
"options": {
"dataLinks": []
},
"percentage": false,
"pointradius": 2,
"points": false,
"renderer": "flot",
"seriesOverrides": [],
"spaceLength": 10,
"stack": false,
"steppedLine": false,
"targets": [
{
"expr": "sum(redis_db_keys{instance=~\"$master\"}) by (instance,db)",
"interval": "",
"legendFormat": "{{instance}}",
"refId": "A"
},
{
"expr": "sum(redis_db_keys{instance=~\"$master\"}) by (cluster)",
"interval": "",
"legendFormat": "{{cluster}}_total",
"refId": "B"
}
],
"thresholds": [],
"timeFrom": null,
"timeRegions": [],
"timeShift": null,
"title": "KEYS 總數",
"tooltip": {
"shared": true,
"sort": 0,
"value_type": "individual"
},
"type": "graph",
"xaxis": {
"buckets": null,
"mode": "time",
"name": null,
"show": true,
"values": []
},
"yaxes": [
{
"format": "short",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
},
{
"format": "short",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
}
],
"yaxis": {
"align": false,
"alignLevel": null
}
},
{
"aliasColors": {},
"bars": false,
"dashLength": 10,
"dashes": false,
"datasource": null,
"description": "各個節點活躍連線數",
"fill": 1,
"fillGradient": 0,
"gridPos": {
"h": 8,
"w": 12,
"x": 0,
"y": 35
},
"hiddenSeries": false,
"id": 26,
"legend": {
"avg": false,
"current": false,
"max": false,
"min": false,
"show": true,
"total": false,
"values": false
},
"lines": true,
"linewidth": 1,
"nullPointMode": "null",
"options": {
"dataLinks": []
},
"percentage": false,
"pointradius": 2,
"points": false,
"renderer": "flot",
"seriesOverrides": [],
"spaceLength": 10,
"stack": false,
"steppedLine": false,
"targets": [
{
"expr": "redis_connected_clients{instance=~\"$instance\"}",
"interval": "",
"legendFormat": "{{hostip}}",
"refId": "A"
}
],
"thresholds": [],
"timeFrom": null,
"timeRegions": [],
"timeShift": null,
"title": "活躍連線數",
"tooltip": {
"shared": true,
"sort": 0,
"value_type": "individual"
},
"type": "graph",
"xaxis": {
"buckets": null,
"mode": "time",
"name": null,
"show": true,
"values": []
},
"yaxes": [
{
"format": "short",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
},
{
"format": "short",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
}
],
"yaxis": {
"align": false,
"alignLevel": null
}
},
{
"aliasColors": {},
"bars": false,
"dashLength": 10,
"dashes": false,
"datasource": null,
"description": "各個節點記憶體碎片率",
"fill": 1,
"fillGradient": 0,
"gridPos": {
"h": 8,
"w": 12,
"x": 12,
"y": 35
},
"hiddenSeries": false,
"id": 28,
"legend": {
"avg": false,
"current": false,
"max": false,
"min": false,
"show": true,
"total": false,
"values": false
},
"lines": true,
"linewidth": 1,
"nullPointMode": "null",
"options": {
"dataLinks": []
},
"percentage": false,
"pointradius": 2,
"points": false,
"renderer": "flot",
"seriesOverrides": [],
"spaceLength": 10,
"stack": false,
"steppedLine": false,
"targets": [
{
"expr": "redis_mem_fragmentation_ratio{instance=~\"$instance\"}",
"interval": "",
"legendFormat": "{{instance}}",
"refId": "A"
}
],
"thresholds": [],
"timeFrom": null,
"timeRegions": [],
"timeShift": null,
"title": "記憶體碎片率",
"tooltip": {
"shared": true,
"sort": 0,
"value_type": "individual"
},
"type": "graph",
"xaxis": {
"buckets": null,
"mode": "time",
"name": null,
"show": true,
"values": []
},
"yaxes": [
{
"format": "short",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
},
{
"format": "short",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
}
],
"yaxis": {
"align": false,
"alignLevel": null
}
},
{
"aliasColors": {},
"bars": false,
"dashLength": 10,
"dashes": false,
"datasource": null,
"description": "各個節點 的負載",
"fill": 1,
"fillGradient": 0,
"gridPos": {
"h": 8,
"w": 12,
"x": 0,
"y": 43
},
"hiddenSeries": false,
"id": 34,
"legend": {
"avg": false,
"current": false,
"max": false,
"min": false,
"show": true,
"total": false,
"values": false
},
"lines": true,
"linewidth": 1,
"nullPointMode": "null",
"options": {
"dataLinks": []
},
"percentage": false,
"pointradius": 2,
"points": false,
"renderer": "flot",
"seriesOverrides": [],
"spaceLength": 10,
"stack": false,
"steppedLine": false,
"targets": [
{
"expr": "node_load1{hostname=~\"$host\"}",
"interval": "",
"legendFormat": "{{hostname}}",
"refId": "A"
}
],
"thresholds": [],
"timeFrom": null,
"timeRegions": [],
"timeShift": null,
"title": "負載（Load）",
"tooltip": {
"shared": true,
"sort": 0,
"value_type": "individual"
},
"type": "graph",
"xaxis": {
"buckets": null,
"mode": "time",
"name": null,
"show": true,
"values": []
},
"yaxes": [
{
"format": "short",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
},
{
"format": "short",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
}
],
"yaxis": {
"align": false,
"alignLevel": null
}
}
],
"refresh": "5s",
"schemaVersion": 22,
"style": "dark",
"tags": [],
"templating": {
"list": [
{
"auto": true,
"auto_count": 100,
"auto_min": "1s",
"current": {
"selected": false,
"text": "5s",
"value": "5s"
},
"hide": 0,
"label": "interval",
"name": "interval",
"options": [
{
"selected": false,
"text": "auto",
"value": "$__auto_interval_interval"
},
{
"selected": true,
"text": "5s",
"value": "5s"
},
{
"selected": false,
"text": "30s",
"value": "30s"
},
{
"selected": false,
"text": "1m",
"value": "1m"
},
{
"selected": false,
"text": "10m",
"value": "10m"
},
{
"selected": false,
"text": "30m",
"value": "30m"
},
{
"selected": false,
"text": "1h",
"value": "1h"
},
{
"selected": false,
"text": "6h",
"value": "6h"
},
{
"selected": false,
"text": "12h",
"value": "12h"
},
{
"selected": false,
"text": "1d",
"value": "1d"
}
],
"query": "5s,30s,1m,10m,30m,1h,6h,12h,1d",
"refresh": 2,
"skipUrlSync": false,
"type": "interval"
},
{
"allValue": null,
"current": {
"text": "All",
"value": [
"$__all"
]
},
"datasource": "Prometheus",
"definition": "label_values(redis_up,cluster)",
"hide": 0,
"includeAll": true,
"index": -1,
"label": "Cluster",
"multi": true,
"name": "cluster",
"options": [],
"query": "label_values(redis_up,cluster)",
"refresh": 1,
"regex": "",
"skipUrlSync": false,
"sort": 0,
"tagValuesQuery": "",
"tags": [],
"tagsQuery": "",
"type": "query",
"useTags": false
},
{
"allValue": null,
"current": {
"text": "All",
"value": [
"$__all"
]
},
"datasource": "Prometheus",
"definition": "label_values(redis_instance_info,role)",
"hide": 0,
"includeAll": true,
"index": -1,
"label": "Role",
"multi": true,
"name": "role",
"options": [],
"query": "label_values(redis_instance_info,role)",
"refresh": 1,
"regex": "",
"skipUrlSync": false,
"sort": 0,
"tagValuesQuery": "",
"tags": [],
"tagsQuery": "",
"type": "query",
"useTags": false
},
{
"allValue": null,
"current": {
"text": "All",
"value": [
"$__all"
]
},
"datasource": "Prometheus",
"definition": "label_values(redis_instance_info{cluster=~\"$cluster\",role=~\"$role\"},instance)",
"hide": 2,
"includeAll": true,
"index": -1,
"label": "instance",
"multi": true,
"name": "instance",
"options": [],
"query": "label_values(redis_instance_info{cluster=~\"$cluster\",role=~\"$role\"},instance)",
"refresh": 1,
"regex": "",
"skipUrlSync": false,
"sort": 0,
"tagValuesQuery": "",
"tags": [],
"tagsQuery": "",
"type": "query",
"useTags": false
},
{
"allValue": null,
"current": {
"text": "All",
"value": [
"$__all"
]
},
"datasource": "Prometheus",
"definition": "label_values(redis_instance_info{cluster=~\"$cluster\",role=\"master\"},instance)",
"hide": 2,
"includeAll": true,
"index": -1,
"label": "master",
"multi": true,
"name": "master",
"options": [],
"query": "label_values(redis_instance_info{cluster=~\"$cluster\",role=\"master\"},instance)",
"refresh": 1,
"regex": "",
"skipUrlSync": false,
"sort": 0,
"tagValuesQuery": "",
"tags": [],
"tagsQuery": "",
"type": "query",
"useTags": false
},
{
"allValue": null,
"current": {
"text": "All",
"value": [
"$__all"
]
},
"datasource": "Prometheus",
"definition": "label_values(redis_up{cluster=~\"$cluster\"}, hostip)",
"hide": 2,
"includeAll": true,
"index": -1,
"label": "host",
"multi": true,
"name": "host",
"options": [],
"query": "label_values(redis_up{cluster=~\"$cluster\"}, hostip)",
"refresh": 1,
"regex": "",
"skipUrlSync": false,
"sort": 0,
"tagValuesQuery": "",
"tags": [],
"tagsQuery": "",
"type": "query",
"useTags": false
}
]
},
"time": {
"from": "now-5m",
"to": "now"
},
"timepicker": {
"refresh_intervals": [
"5s",
"10s",
"30s",
"1m",
"5m",
"15m",
"30m",
"1h",
"2h",
"1d"
]
},
"timezone": "",
"title": "Redis_Cluster_V1.35",
"uid": "5FfBHG3Zz",
"variables": {
"list": []
},
"version": 3
}
View Code
②：不同密碼多例項抓取，因為使用的是 >1.x 的redis_exporter [v1.3.5]，不支援多例項。因為一個export只能指定一個密碼，如果想進行多例項不同密碼抓取的話，所以需要在Prometheus配置多個redis_exporter，叢集資訊為：
3節點無從 192.168.163.132、133、134 -- 6379 密碼 abc 192.168.163.132、133、134 -- 6380 密碼 cba
prometheus.yml：
global:
scrape_interval: 10s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
evaluation_interval: 10s # Evaluate rules every 15 seconds. The default is every 1 minute.
alerting:
alertmanagers:
- static_configs:
- targets:
# - alertmanager:9093
rule_files:
# - "first_rules.yml"
# - "second_rules.yml"
scrape_configs:
- job_name: 'prometheus'
static_configs:
- targets: ['192.168.163.132:9099']
- job_name: 'node_exporter'
scrape_interval: 1s
file_sd_configs:
- files:
- targets/node/*.yml
refresh_interval: 10s
relabel_configs:
- action: replace
source_labels: ['__address__']
regex: (.*):(.*)
replacement: $1
target_label: hostname
- action: labeldrop
regex: __meta_filepath
- job_name: 'redis_exporter_A'
scrape_interval: 1s
file_sd_configs:
- files:
- targets/redis/A*.yml
metrics_path: /scrape
relabel_configs:
- action: replace
source_labels: ['__address__']
regex: (.*):(.*)
replacement: $1
target_label: hostip
- source_labels: [__address__]
target_label: __param_target
- source_labels: [__param_target]
target_label: instance
- target_label: __address__
replacement: 192.168.163.132:9123
- job_name: 'redis_exporter_B'
scrape_interval: 1s
file_sd_configs:
- files:
- targets/redis/B*.yml
metrics_path: /scrape
relabel_configs:
- action: replace
source_labels: ['__address__']
regex: (.*):(.*)
replacement: $1
target_label: hostip
- source_labels: [__address__]
target_label: __param_target
- source_labels: [__param_target]
target_label: instance
- target_label: __address__
replacement: 192.168.163.132:9124
View Code
targets/redis/*.yml：
# ls -lh /etc/prometheus/targets/redis/A*.yml
-rw-r--r-- 1 root root 121 4月 18 13:14 /etc/prometheus/targets/redis/Atest2_6379_redis_exporter.yml
-rw-r--r-- 1 root root 121 4月 18 13:14 /etc/prometheus/targets/redis/Atest3_6379_redis_exporter.yml
-rw-r--r-- 1 root root 121 4月 18 13:14 /etc/prometheus/targets/redis/Atest4_6379_redis_exporter.yml
# ls -lh /etc/prometheus/targets/redis/B*.yml
-rw-r--r-- 1 root root 121 4月 18 13:14 /etc/prometheus/targets/redis/Btest2_6380_redis_exporter.yml
-rw-r--r-- 1 root root 121 4月 18 13:15 /etc/prometheus/targets/redis/Btest3_6380_redis_exporter.yml
-rw-r--r-- 1 root root 121 4月 18 13:15 /etc/prometheus/targets/redis/Btest4_6380_redis_exporter.yml
# cat /etc/prometheus/targets/redis/Atest2_6379_redis_exporter.yml
[
{
"targets": [ "192.168.163.132:6379"],
"labels": {"env":"test","cluster":"test_one","alias":"test2"}
}
]
# cat /etc/prometheus/targets/redis/Atest3_6379_redis_exporter.yml
[
{
"targets": [ "192.168.163.133:6379"],
"labels": {"env":"test","cluster":"test_one","alias":"test3"}
}
]
# cat /etc/prometheus/targets/redis/Atest4_6379_redis_exporter.yml
[
{
"targets": [ "192.168.163.134:6379"],
"labels": {"env":"test","cluster":"test_one","alias":"test4"}
}
]
# cat /etc/prometheus/targets/redis/Btest2_6380_redis_exporter.yml
[
{
"targets": [ "192.168.163.132:6380"],
"labels": {"env":"test","cluster":"test_two","alias":"test2"}
}
]
# cat /etc/prometheus/targets/redis/Btest3_6380_redis_exporter.yml
[
{
"targets": [ "192.168.163.133:6380"],
"labels": {"env":"test","cluster":"test_two","alias":"test3"}
}
]
# cat /etc/prometheus/targets/redis/Btest4_6380_redis_exporter.yml
[
{
"targets": [ "192.168.163.134:6380"],
"labels": {"env":"test","cluster":"test_two","alias":"test4"}
}
]
View Code
以後如果有相關的例項叢集包括主從加進來，只要新增2類exporter檔案即可。最後開啟exporter：
#指定節點執行 redis_exporter: ./redis_exporter -redis-only-metrics -redis.password abc -web.listen-address=:9123 #指定節點執行 redis_exporter: ./redis_exporter -redis-only-metrics -redis.password cba -web.listen-address=:9124
最後配置Grafana，效果和①一樣，唯一的區別就是②開多個exporter。這樣會導致一個問題：每次增加不同密碼的節點都會修改Prometheus配置檔案，既不安全也不方便。可以通過下面方法來實現多例項不同密碼抓取。按照編寫匯出器的最佳實踐，需要像nodes_exporter一樣在不同例項的主機上安裝和開啟redis_exporter，即為每個redis instance開啟一個exporter。叢集資訊為：
叢集1：密碼 cc
M: 192.168.163.132:15389 192.168.163.133:15389 192.168.163.134:15389 S: 192.168.163.132:15489 192.168.163.133:15489 192.168.163.134:15489 叢集2：密碼abc M: 192.168.163.132:6379 192.168.163.133:6379 192.168.163.134:6379 S: 192.168.163.132:6381 192.168.163.133:6381 192.168.163.134:6381
prometheus.yml：
global:
scrape_interval: 10s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
evaluation_interval: 10s # Evaluate rules every 15 seconds. The default is every 1 minute.
alerting:
alertmanagers:
- static_configs:
- targets:
# - alertmanager:9093
rule_files:
# - "first_rules.yml"
# - "second_rules.yml"
scrape_configs:
- job_name: 'prometheus'
static_configs:
- targets: ['192.168.163.132:9099']
- job_name: 'node_exporter'
scrape_interval: 1s
file_sd_configs:
- files:
- targets/node/node*.yml
refresh_interval: 10s
relabel_configs:
- action: replace
source_labels: ['__address__']
regex: (.*):(.*)
replacement: $1
target_label: hostname
- action: labeldrop
regex: __meta_filepath
- job_name: 'redis_exporter'
scrape_interval: 1s
file_sd_configs:
- files:
- targets/redis/redis*.yml
relabel_configs:
- action: replace
source_labels: ['__address__']
regex: (.*):(.*)
replacement: $1
target_label: hostip
- action: labeldrop
regex: __meta_filepath
View Code
targets/redis/redis*.yml
root@test2:/etc/prometheus/targets/redis# ls -lh redis*
-rw-r--r-- 1 prometheus prometheus 117 4月 18 22:02 redis_test2_15389_exporter.yml
-rw-r--r-- 1 prometheus prometheus 117 4月 18 22:05 redis_test2_15489_exporter.yml
-rw-r--r-- 1 prometheus prometheus 117 4月 18 22:02 redis_test3_15389_exporter.yml
-rw-r--r-- 1 prometheus prometheus 117 4月 18 22:05 redis_test3_15489_exporter.yml
-rw-r--r-- 1 prometheus prometheus 117 4月 18 22:03 redis_test4_15389_exporter.yml
-rw-r--r-- 1 prometheus prometheus 117 4月 18 22:05 redis_test4_15489_exporter.yml
root@test2:/etc/prometheus/targets/redis# cat redis_test2_15389_exporter.yml
[
{
"targets": ["192.168.163.132:9121"],
"labels": {"env":"test","cluster":"test","alias":"test2"}
}
]
root@test2:/etc/prometheus/targets/redis# cat redis_test3_15389_exporter.yml
[
{
"targets": ["192.168.163.133:9121"],
"labels": {"env":"test","cluster":"test","alias":"test3"}
}
]
root@test2:/etc/prometheus/targets/redis# cat redis_test4_15389_exporter.yml
[
{
"targets": ["192.168.163.134:9121"],
"labels": {"env":"test","cluster":"test","alias":"test4"}
}
]
root@test2:/etc/prometheus/targets/redis# cat redis_test2_15489_exporter.yml
[
{
"targets": ["192.168.163.132:9122"],
"labels": {"env":"test","cluster":"test","alias":"test2"}
}
]
root@test2:/etc/prometheus/targets/redis# cat redis_test3_15489_exporter.yml
[
{
"targets": ["192.168.163.133:9122"],
"labels": {"env":"test","cluster":"test","alias":"test3"}
}
]
root@test2:/etc/prometheus/targets/redis# cat redis_test4_15489_exporter.yml
[
{
"targets": ["192.168.163.134:9122"],
"labels": {"env":"test","cluster":"test","alias":"test4"}
}
]
View Code
通過檔案服務發現，實現動態新增節點（exporter），一個Redis例項一個exporter，這裡只開叢集1的exporter，即在test2、test3、test4上各開啟2個exporter，共6個exporter對應6個Redis例項，配置完成之後，可以直接到各個監控主機上啟動redis_exporter：
test2: ./redis_exporter -redis-only-metrics -redis.addr 192.168.163.132:15389 -redis.password cc -web.listen-address=:9121 ./redis_exporter -redis-only-metrics -redis.addr 192.168.163.132:15489 -redis.password cc -web.listen-address=:9122 test3: ./redis_exporter -redis-only-metrics -redis.addr 192.168.163.133:15389 -redis.password cc -web.listen-address=:9121 ./redis_exporter -redis-only-metrics -redis.addr 192.168.163.133:15489 -redis.password cc -web.listen-address=:9122 test4: ./redis_exporter -redis-only-metrics -redis.addr 192.168.163.134:15389 -redis.password cc -web.listen-address=:9121 ./redis_exporter -redis-only-metrics -redis.addr 192.168.163.134:15489 -redis.password cc -web.listen-address=:9122
最後配置Grafana，效果：
JSON Model：
{
"annotations": {
"list": [
{
"builtIn": 1,
"datasource": "-- Grafana --",
"enable": true,
"hide": true,
"iconColor": "rgba(0, 211, 255, 1)",
"name": "Annotations & Alerts",
"type": "dashboard"
}
]
},
"editable": true,
"gnetId": null,
"graphTooltip": 0,
"id": 13,
"iteration": 1587219062782,
"links": [],
"panels": [
{
"cacheTimeout": null,
"colorBackground": false,
"colorValue": true,
"colors": [
"#299c46",
"rgba(237, 129, 40, 0.89)",
"#d44a3a"
],
"datasource": null,
"description": "叢集個數",
"format": "none",
"gauge": {
"maxValue": 100,
"minValue": 0,
"show": false,
"thresholdLabels": false,
"thresholdMarkers": true
},
"gridPos": {
"h": 3,
"w": 5,
"x": 0,
"y": 0
},
"id": 8,
"interval": null,
"links": [],
"mappingType": 1,
"mappingTypes": [
{
"name": "value to text",
"value": 1
},
{
"name": "range to text",
"value": 2
}
],
"maxDataPoints": 100,
"nullPointMode": "connected",
"nullText": null,
"postfix": "",
"postfixFontSize": "50%",
"prefix": "",
"prefixFontSize": "50%",
"rangeMaps": [
{
"from": "null",
"text": "N/A",
"to": "null"
}
],
"sparkline": {
"fillColor": "rgba(31, 118, 189, 0.18)",
"full": false,
"lineColor": "rgb(31, 120, 193)",
"show": false,
"ymax": null,
"ymin": null
},
"tableColumn": "",
"targets": [
{
"expr": "count(count(redis_up{cluster=~\"$cluster\"}>0) by (cluster))",
"interval": "",
"legendFormat": "",
"refId": "A"
}
],
"thresholds": "",
"timeFrom": null,
"timeShift": null,
"title": "叢集個數",
"type": "singlestat",
"valueFontSize": "100%",
"valueMaps": [
{
"op": "=",
"text": "N/A",
"value": "null"
}
],
"valueName": "current"
},
{
"cacheTimeout": null,
"colorBackground": false,
"colorValue": true,
"colors": [
"#299c46",
"rgba(237, 129, 40, 0.89)",
"#d44a3a"
],
"datasource": null,
"description": "叢集節點數量",
"format": "none",
"gauge": {
"maxValue": 100,
"minValue": 0,
"show": false,
"thresholdLabels": false,
"thresholdMarkers": true
},
"gridPos": {
"h": 3,
"w": 5,
"x": 5,
"y": 0
},
"id": 4,
"interval": null,
"links": [],
"mappingType": 1,
"mappingTypes": [
{
"name": "value to text",
"value": 1
},
{
"name": "range to text",
"value": 2
}
],
"maxDataPoints": 100,
"nullPointMode": "connected",
"nullText": null,
"postfix": "",
"postfixFontSize": "50%",
"prefix": "",
"prefixFontSize": "50%",
"rangeMaps": [
{
"from": "null",
"text": "N/A",
"to": "null"
}
],
"sparkline": {
"fillColor": "rgba(31, 118, 189, 0.18)",
"full": false,
"lineColor": "rgb(31, 120, 193)",
"show": false,
"ymax": null,
"ymin": null
},
"tableColumn": "",
"targets": [
{
"expr": "count(redis_up{cluster=~\"$cluster\"})",
"interval": "",
"legendFormat": "",
"refId": "A"
}
],
"thresholds": "",
"timeFrom": null,
"timeShift": null,
"title": "叢集節點數",
"type": "singlestat",
"valueFontSize": "100%",
"valueMaps": [
{
"op": "=",
"text": "N/A",
"value": "null"
}
],
"valueName": "current"
},
{
"cacheTimeout": null,
"colorBackground": false,
"colorValue": true,
"colors": [
"#299c46",
"rgba(237, 129, 40, 0.89)",
"#d44a3a"
],
"datasource": null,
"description": "叢集活躍節點數量",
"format": "none",
"gauge": {
"maxValue": 100,
"minValue": 0,
"show": false,
"thresholdLabels": false,
"thresholdMarkers": true
},
"gridPos": {
"h": 3,
"w": 4,
"x": 10,
"y": 0
},
"id": 6,
"interval": null,
"links": [],
"mappingType": 1,
"mappingTypes": [
{
"name": "value to text",
"value": 1
},
{
"name": "range to text",
"value": 2
}
],
"maxDataPoints": 100,
"nullPointMode": "connected",
"nullText": null,
"postfix": "",
"postfixFontSize": "50%",
"prefix": "",
"prefixFontSize": "50%",
"rangeMaps": [
{
"from": "null",
"text": "N/A",
"to": "null"
}
],
"sparkline": {
"fillColor": "rgba(31, 118, 189, 0.18)",
"full": false,
"lineColor": "rgb(31, 120, 193)",
"show": false,
"ymax": null,
"ymin": null
},