Redis监控工具实现群集运维可视化(redis监控工具 群集)
Redis监控工具:实现群集运维可视化
随着现代应用程序和网络的规模越来越大,数据存储和分析也变得更加复杂。而 Redis 作为一种内存键值存储系统,因其高速、可扩展性和可靠性而成为了许多应用程序的首选。但是,一旦 Redis 群集变得庞大,它们的运维工作就变得相当困难。这时候,Redis监控工具就成为了一种必不可少的工具。本文将介绍如何使用 Prometheus 和 Grafana 来监控 Redis 群集,并实现群集运维可视化。
1. 监控 Redis 群集
我们需要一个监控 Redis 群集的工具。Prometheus 是一种功能强大的监控系统,它可以定期从 Redis 服务器获取统计数据。为了启用 Redis 监控,我们需要安装和配置相应的 Redis Exporter。
Redis Exporter 负责从 Redis 服务器获取统计信息,并将这些信息映射到 Prometheus(一种流行的开源时序数据库)的数据模型中。在这个过程中,Redis Exporter会自动发现 Redis 群集上运行的实例,并为每个实例提供细粒度的性能指标。
以下是 Redis Exporter 的安装和配置方法:
1. 下载 Redis Exporter 并解压
$ wget https://github.com/oliver006/redis_exporter/releases/download/v1.4.1/redis_exporter-v1.4.1.linux-amd64.tar.gz
$ tar xvf redis_exporter-v1.4.1.linux-amd64.tar.gz$ cd redis_exporter-v1.4.1.linux-amd64
2. 启动 Redis Exporter
$ ./redis_exporter --redis.addr=127.0.0.1:6379
在这个示例中,我们使用默认的 Redis 服务器地址和端口。如果你的 Redis 群集在其他服务器上运行,需要将 `127.0.0.1:6379` 替换为实际的 Redis 地址和端口。
2. 创建 Grafana 仪表盘
现在,我们已经可以从 Redis 群集中收集统计信息,并将其存储在 Prometheus 中。但是,我们如何实现运维可视化呢?这就需要用到 Grafana,一个流行的开源监控和数据可视化平台。
对于 Redis 状态监控,我们可以创建一个仪表盘(Dashboard),使用 Prometheus 作为数据源,并将 Redis Exporter 产生的度量数据呈现为图表。在 Grafana 中,我们可以选择使用预定义的 Redis 仪表板,该仪表板包括许多有用的度量标准。
以下是创建 Redis 仪表盘的步骤:
1. 在 Grafana 仪表盘页面中,选择 `Create` | `Import`。
2. 粘贴以下的 JSON 配置文件,并选择 Prometheus 作为数据源:
{
"dashboard": { "id": null,
"title": "Redis Overview", "timezone": "browser",
"panels": [ {
"gridPos": { "w": 8,
"h": 8, "x": 0,
"y": 0 },
"id": 1, "title": "Memory",
"type": "singlestat", "targets": [
{ "expr": "sum(redis_memory_used_bytes{instance=\"$redis_instance\"})",
"legendFormat": "Used", "refId": "A"
}, {
"expr": "sum(redis_memory_max_bytes{instance=\"$redis_instance\"})", "legendFormat": "Max",
"refId": "B" }
], "links": [],
"cacheTimeout": null, "format": "bytes",
"prefix": "", "postfix": "",
"valueMaps": [], "mappingType": 1,
"nullPointMode": "null", "sparkline": {
"show": true, "full": false,
"lineColor": "#333333", "fillColor": "#999999",
"linewidth": 1 },
"gauge": { "show": true,
"thresholdLabels": false, "thresholdMarkers": true,
"label": "", "maxValue": 100,
"minValue": 0, "thresholds": "80:90"
}, "colorBackground": false,
"colorValue": false, "colors": [
"#A30000", "#E6E600",
"#008F00" ],
"sparklineFillColor": "#AAAAAA", "sparklineFull": false,
"bars": false, "dashLength": 10,
"dashes": false, "fillGradient": 0,
"lineWidth": 1, "nullPointFill": 0,
"percentage": false, "pointradius": 5,
"points": false, "renderer": "flot",
"seriesOverrides": [], "thresholds": [],
"timeFrom": null, "timeShift": null,
"valueName": "current" },
{ "gridPos": {
"w": 12, "h": 8,
"x": 8, "y": 0
}, "id": 2,
"title": "Operations", "type": "graph",
"panes": [ {
"targets": [ {
"refId": "ops", "expr": "sum(rate(redis_total_commands_processed{instance=\"$redis_instance\"}[1m]))",
"legendFormat": "Ops/sec", "intervalFactor": 2
} ],
"title": "" },
{ "targets": [
{ "refId": "keyspace_hits",
"expr": "sum(rate(redis_keyspace_hits{instance=\"$redis_instance\"}[1m]))", "legendFormat": "Hits/sec",
"intervalFactor": 2 },
{ "refId": "keyspace_misses",
"expr": "sum(rate(redis_keyspace_misses{instance=\"$redis_instance\"}[1m]))", "legendFormat": "Misses/sec",
"intervalFactor": 2 }
], "title": "Key Space"
}, {
"targets": [ {
"refId": "expiries", "expr": "sum(rate(redis_keyspace_key_expires{instance=\"$redis_instance\"}[1m]))",
"legendFormat": "Expires/sec", "intervalFactor": 2
}, {
"refId": "evictions", "expr": "sum(rate(redis_keyspace_evicted_keys{instance=\"$redis_instance\"}[1m]))",
"legendFormat": "Evictions/sec", "intervalFactor": 2
} ],
"title": "Collected Key Space" }
], "options": {
"span": 12, "legend": {
"alignAsTable": false },
"showBars": false, "stack": false,
"tooltip": { "value_type": "individual",
"shared": true }
}, "links": [
{ "asDropdown": false,
"targetBlank": true, "tooltip": "PromQL query for this panel.",
"title": "PromQL", "type": "prometheus",
"url": "/prometheus/graph?g0.expr=sum(rate(redis_total_commands_processed{instance=%22$redis_instance%22}[1m]))&g0.tab=1&g1.expr=sum(rate(redis_keyspace_hits{instance=%22$redis_instance%22}[1m]))&g1.tab=1&g2.expr=sum(rate(redis_keyspace_misses{instance=%22$redis_instance%22}[1m]))&g2.tab=1&g3.expr=sum(rate(redis_keyspace_key_expires{instance=%22$redis_instance%22}[1m]))&g3.tab=1&g4.expr=sum(rate(redis_keyspace_evicted_keys{instance=%22$redis_instance%22}[1m]))&g4.tab=1" }
], "cacheTimeout": null,
"format": "bytes", "prefix": "",
"postfix": "", "valueMaps": [],
"mappingType": 1, "nullPointMode": "null",
"seriesOverrides": [], "thresholds": [],
"timeFrom": null, "timeShift