k8s容器磁盘监控

# K8S容器磁盘监控

Kubernetes（简称K8S）是一个用于自动部署、扩展和管理容器化应用程序的开源平台。在K8S中，监控容器磁盘是非常重要的，可以帮助我们了解应用程序的运行状态、资源利用情况等信息。在本文中，我将向你介绍如何实现K8S容器磁盘监控。

## 监控流程

首先，让我们看一下实现K8S容器磁盘监控的基本流程：

| 步骤 | 操作 |
|----|----|
| 1 | 部署Prometheus Operator |
| 2 | 部署Node Exporter |
| 3 | 配置Prometheus |
| 4 | 部署Grafana |
| 5 | 配置Grafana Dashboard |

## 详细步骤

### 1. 部署Prometheus Operator

在K8S集群中部署Prometheus Operator，用于管理Prometheus实例。

```bash
kubectl apply -f https://raw.githubusercontent.com/coreos/prometheus-operator/master/bundle.yaml
```

### 2. 部署Node Exporter

Node Exporter是用于收集节点上的各种系统资源数据的代理。

```bash
kubectl apply -f https://raw.githubusercontent.com/coreos/kube-prometheus/master/manifests/node-exporter-daemonset.yaml
```

### 3. 配置Prometheus

配置Prometheus以监控Node Exporter收集的数据。

```yaml
apiVersion: monitoring.coreos.com/v1
kind: Prometheus
metadata:
name: prometheus-k8s
namespace: default
spec:
serviceMonitorSelectorNilUsesHelmValues: false
serviceMonitorNamespaceSelector: {}
serviceMonitorSelector: {}
ruleSelector: {}
prometheusSpec:
replicas: 2
serviceAccountName: prometheus-k8s
serviceMonitorSelector: {}
podMonitorSelector: {}
resources:
requests:
memory: "400Mi"
nodeSelector:
beta.kubernetes.io/os: linux
externalUrl: http://prometheus-k8s
```

### 4. 部署Grafana

部署Grafana用于展示监控数据，并且配置Prometheus作为数据源。

```bash
kubectl apply -f https://raw.githubusercontent.com/coreos/kube-prometheus/master/manifests/grafana-deployment.yaml
```

### 5. 配置Grafana Dashboard

配置Grafana的Dashboard展示容器磁盘监控数据。

```json
{
"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": null,
"links": [],
"refresh": false,
"rows": [
{
"collapse": false,
"height": "250px",
"panels": [],
"title": "New row"
}
],
"style": "dark",
"tags": [],
"templating": {
"list": []
},
"time": {
"from": "now-6h",
"to": "now"
},
"timepicker": {
"refresh_intervals": [
"5s",
"10s",
"30s",
"1m",
"5m",
"15m",
"30m",
"1h",
"2h",
"1d"
],
"time_options": [
"5m",
"15m",
"1h",
"6h",
"12h",
"24h",
"2d",
"7d",
"30d"
]
},
"timezone": "",
"title": "Kubernetes / Compute Resources / Namespace (Pods)",
"uid": "TAJ0eJdWz",
"version": 38
}
```

通过以上步骤，你就可以实现K8S容器磁盘监控了。记得定期查看Grafana的监控数据，及时发现问题并进行处理。希望这篇文章能帮助你成功实现K8S容器磁盘监控！