# 在待监控的集群部署node-exporter和kube-state-metrics ``` 43 wget https://get.helm.sh/helm-v3.8.0-linux-amd64.tar.gz 45 tar zxf helm-v3.8.0-linux-amd64.tar.gz cd linux-amd64 49 cp helm /usr/bin/ helm repo add prometheus-community https://prometheus-community.github.io/helm-charts helm repo update helm install kube-state-metrics prometheus-community/kube-state-metrics --namespace monitoring helm install prometheus-node-exporter prometheus-community/prometheus-node-exporter --namespace monitoring ``` # 在promethues中配置监控指标node-exporter 可以通过kubernetes_sd_config从Kubernetes的REST API查找并拉取指标，并始终与集群状态保持同步。 kubernetes_sd_config的node和service都能发现node-exporter。 但这里使用file_sd_configs来发现node-exporter，因为node-exporter直接节点上暴露了端口9100 ``` - job_name: k8s1-node-exporter file_sd_configs: - files: - '/etc/prometheus/file-sd-config/file-sd-k8s1.json' ``` # 直接制作文件夹为configmap ``` root@k8s2-01:/home/ubuntu/k8syaml/monitoring# cat file-sd-config/file-sd-k8s1.json [ { "labels": { "hostname": "cn-office-tonytest-k8s1-1", "service": "k8s1" }, "targets": [ "192.168.60.204:9100" ] }, { "labels": { "hostname": "cn-office-tonytest-k8s1-2", "service": "k8s1" }, "targets": [ "192.168.60.79:9100" ] } ] ``` `kubectl create configmap file-sd-config --from-file=file-sd-config/ -n monitoring` **将file-sd-config/目录下的文件都制作成configmap** ``` root@k8s2-01:/home/ubuntu/k8syaml/monitoring# kubectl get cm -n monitoring file-sd-config -o yaml apiVersion: v1 data: file-sd-crm3qa.json: " [ \n \ {\n \"labels\": {\n \"hostname\": \"crm3qa-k8s-master\",\n \"service\": \"crm3qa\"\n },\n \"targets\": [\n \"192.168.60.81:9100\"\n ]\n \ },\n {\n \"labels\": {\n \"hostname\": \"crm3qa-k8s-slave01\",\n \"service\": \"crm3qa\"\n },\n \"targets\": [\n \"192.168.60.69:9100\"\n ]\n \ },\n {\n \"labels\": {\n \"hostname\": \"crm3qa-k8s-slave02\",\n \"service\": \"crm3qa\"\n },\n \"targets\": [\n \"192.168.60.153:9100\"\n ]\n \ }\n]\n" file-sd-k8s1.json: " [ \n \ {\n \"labels\": {\n \"hostname\": \"cn-office-tonytest-k8s1-1\",\n \"service\": \"k8s1\"\n },\n \"targets\": [\n \"192.168.60.204:9100\"\n ]\n },\n \ {\n \"labels\": {\n \"hostname\": \"cn-office-tonytest-k8s1-2\",\n \"service\": \"k8s1\"\n },\n \"targets\": [\n \"192.168.60.79:9100\"\n ]\n }\n]\n" ``` # 将configmap挂载到prometheus-server指定目录下 ``` volumeMounts: - mountPath: /etc/prometheus/config name: config-volume - mountPath: /data name: storage-volume - mountPath: /etc/prometheus/file-sd-config name: file-sd-config - mountPath: /etc/prometheus/certs name: monitoring-certs --- volumes: - hostPath: path: /data/prometheus/ type: Directory name: storage-volume - configMap: defaultMode: 420 name: prometheus-server name: config-volume - configMap: defaultMode: 420 name: file-sd-config name: file-sd-config - configMap: defaultMode: 420 name: monitoring-certs name: monitoring-certs ```