Kubernetes|k8s之Prometheus-node-down解决 linux|运维|k8s|kubernetes|prometheu

# prometheus-server配置如下 [root@k8s-master-1 prometheus-server]# cat prometheus-config.yaml apiVersion: v1 kind: ConfigMap metadata: name: prometheus-config namespace: kube-prometheus data: prometheus.yml: | global: scrape_interval: 15s scrape_timeout: 10s evaluation_interval: 1m scrape_configs: - job_name: 'kubernetes-node' kubernetes_sd_configs: - role: node - job_name: 'prometheus-server' static_configs: - targets: ['localhost:9090'] relabel_configs: - source_labels: [instance] regex: '(.*)' replacement: 'prometheus-server:9090' target_label: instance action: replace

【Kubernetes|k8s之Prometheus-node-down解决】

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通过上述可以发现，当我们在node_exporter部署好了以后，默认会去http://IP:10250/metrics拉取数据，但是我们一般都是设置node_exporter与宿主机共享网络，所以应该是要去http://IP:9100/metrics拉取数据，故而要重新relabels一下标签

# prometheus配置 [root@k8s-master-1 prometheus-server]# cat prometheus-config.yaml apiVersion: v1 kind: ConfigMap metadata: name: prometheus-config namespace: kube-prometheus data: prometheus.yml: | global: scrape_interval: 15s scrape_timeout: 10s evaluation_interval: 1m scrape_configs: - job_name: 'kubernetes-node' kubernetes_sd_configs: - role: node relabel_configs: - source_labels: [__address__]# 将__address__=192.168.0.10:10250 -> 192.168.0.10:9100,node_exporter默认是9100，且我已事先与宿主机共享网络空间了 regex: '(.*):10250' replacement: '${1}:9100' target_label: __address__ action: replace - action: labelmap regex: __meta__kubernetes_node_label_(.*)# 保留__meta__kubernetes_node_label_标签后面的值作为新标签 - job_name: 'prometheus-server' static_configs: - targets: ['localhost:9090'] relabel_configs: - source_labels: [instance]# 将instance=localhost:9090 -> instance=prometheus-server:9090 regex: '(.*)' replacement: 'prometheus-server:9090' target_label: instance action: replace