目录
一、部署Node-Exporter
二、Prometheus安装和配置
1.创建账号并予以授权
2.创建存储卷存储Prometheus配置信息
3.通过Deployment方式部署Prometheus
4.创建Service
三、Prometheus配置热加载
四、Grafana安装
五、K8s部署Kube-State-Metrics
1.创建Kube-State-Metrics
2.Grafana配置
六、Kubernetes配置Alertmanager发送报警到邮箱
1.Prometheus报警处理流程
2.Prometheus及Alertmanager配置
2.1创建Alertmanager配置文件
2.2创建 Prometheus 和告警规则配置文件
3.安装Prometheus 和 Alertmanager
4.部署Alertmanager的Service
5.处理Kube-Proxy监控告警
节点名称 | IP地址 |
---|---|
控制节点/Master1 | 192.168.241.11 |
工作节点/Node1 | 192.168.241.22 |
工作节点/Node2 | 192.168.241.23 |
一、部署Node-Exporter
#创建监控 namespace
kubectl create ns monitor-sa#部署 node-exporter
mkdir /opt/prometheus
cd /opt/prometheus/vim node-export.yaml---
apiVersion: apps/v1
kind: DaemonSet
#可以保证 k8s 集群的每个节点都运行完全一样的 pod
metadata:name: node-exporternamespace: monitor-salabels:name: node-exporter
spec:selector:matchLabels:name: node-exportertemplate:metadata:labels:name: node-exporterspec:hostPID: truehostIPC: truehostNetwork: truecontainers:- name: node-exporterimage: prom/node-exporter:v0.16.0ports:- containerPort: 9100resources:requests:cpu: 0.15#这个容器运行至少需要0.15核cpusecurityContext:privileged: true#开启特权模式args:- --path.procfs- /host/proc- --path.sysfs- /host/sys- --collector.filesystem.ignored-mount-points- '"^/(sys|proc|dev|host|etc)($|/)"'volumeMounts:- name: devmountPath: /host/dev- name: procmountPath: /host/proc- name: sysmountPath: /host/sys- name: rootfsmountPath: /rootfstolerations:- key: "node-role.kubernetes.io/master"operator: "Exists"effect: "NoSchedule"volumes:- name: prochostPath:path: /proc- name: devhostPath:path: /dev- name: syshostPath:path: /sys- name: rootfshostPath:path: /#hostNetwork、hostIPC、hostPID都为True时,表示这个Pod里的所有容器,会直接使用宿主机的网络,直接与宿主机进行IPC(进程间通信)通信,可以看到宿主机里正在运行的所有进程。加入了hostNetwork:true会直接将我们的宿主机的9100端口映射出来,从而不需要创建service在我们的宿主机上就会有一个9100的端口。kubectl apply -f node-export.yamlkubectl get pods -n monitor-sa -o wide
#通过 node-exporter 采集数据
node-exporter 默认的监听端口是 9100,可以执行 curl http://主机ip:9100/metrics 获取到主机的所有监控数据curl -Ls http://192.168.241.11:9100/metrics | grep node_cpu_seconds# HELP node_cpu_seconds_total Seconds the cpus spent in each mode.
#Help 用于解释当前指标的含义
# TYPE node_cpu_seconds_total counter
#Type 用于说明数据的类型,这是一个 counter(计数器)类型的数据curl -Ls http://192.168.241.11:9100/metrics | grep node_load
二、Prometheus安装和配置
1.创建账号并予以授权
#创建一个 sa 账号 monitor
kubectl create serviceaccount monitor -n monitor-sa#把 sa 账号 monitor 通过 clusterrolebing 绑定到 clusterrole 上
kubectl create clusterrolebinding monitor-clusterrolebinding -n monitor-sa --clusterrole=cluster-admin --serviceaccount=monitor-sa:monitor
2.创建存储卷存储Prometheus配置信息
vim prometheus-cfg.yaml---
kind: ConfigMap
apiVersion: v1
metadata:labels:app: prometheusname: prometheus-confignamespace: monitor-sa
data:prometheus.yml: |global:#指定prometheus的全局配置,比如采集间隔,抓取超时时间等scrape_interval: 15s#采集目标主机监控数据的时间间隔,默认为1mscrape_timeout: 10s#数据采集超时时间,默认10sevaluation_interval: 1m#触发告警生成alert的时间间隔,默认是1mscrape_configs:#配置数据源,称为target,每个target用job_name命名。又分为静态配置和服务发现- job_name: 'kubernetes-node'kubernetes_sd_configs:# *_sd_configs 指定的是k8s的服务发现- role: node#使用node角色,它使用默认的kubelet提供的http端口来发现集群中每个node节点relabel_configs:#重新标记- source_labels: [__address__]#配置的原始标签,匹配地址regex: '(.*):10250'#匹配带有10250端口的url,支持自定义replacement: '${1}:9100'#把匹配到的ip:10250的ip保留target_label: __address__#新生成的url是${1}获取到的ip:9100action: replace#动作替换- action: labelmapregex: __meta_kubernetes_node_label_(.+)#匹配到下面正则表达式的标签会被保留,如果不做regex正则的话,默认只是会显示instance标签- job_name: 'kubernetes-node-cadvisor'#抓取cAdvisor数据,是获取kubelet上/metrics/cadvisor接口数据来获取容器的资源使用情况kubernetes_sd_configs:- role: nodescheme: httpstls_config:ca_file: /var/run/secrets/kubernetes.io/serviceaccount/ca.crtbearer_token_file: /var/run/secrets/kubernetes.io/serviceaccount/tokenrelabel_configs:- action: labelmap#把匹配到的标签保留regex: __meta_kubernetes_node_label_(.+)#保留匹配到的具有__meta_kubernetes_node_label的标签- target_label: __address__ #获取到的地址:__address__="192.168.241.22:10250"replacement: kubernetes.default.svc:443#把获取到的地址替换成新的地址kubernetes.default.svc:443- source_labels: [__meta_kubernetes_node_name]regex: (.+)#把原始标签中__meta_kubernetes_node_name值匹配到target_label: __metrics_path__#获取__metrics_path__对应的值replacement: /api/v1/nodes/${1}/proxy/metrics/cadvisor #把metrics替换成新的值api/v1/nodes/k8s-master1/proxy/metrics/cadvisor#${1}是__meta_kubernetes_node_name获取到的值#新的url就是https://kubernetes.default.svc:443/api/v1/nodes/k8s-master1/proxy/metrics/cadvisor- job_name: 'kubernetes-apiserver'kubernetes_sd_configs:- role: endpoints#使用k8s中的endpoint服务发现,采集apiserver 6443端口获取到的数据scheme: httpstls_config:ca_file: /var/run/secrets/kubernetes.io/serviceaccount/ca.crtbearer_token_file: /var/run/secrets/kubernetes.io/serviceaccount/tokenrelabel_configs:- source_labels: [__meta_kubernetes_namespace, __meta_kubernetes_service_name, __meta_kubernetes_endpoint_port_name]#[endpoint这个对象的名称空间,endpoint对象的服务名,exnpoint的端口名称]action: keep#采集满足条件的实例,其他实例不采集regex: default;kubernetes;https#正则匹配到的默认空间下的service名字是kubernetes,协议是https的endpoint类型保留下来- job_name: 'kubernetes-service-endpoints'kubernetes_sd_configs:- role: endpointsrelabel_configs:- source_labels: [__meta_kubernetes_service_annotation_prometheus_io_scrape]action: keepregex: true#重新打标仅抓取到的具有"prometheus.io/scrape: true"的annotation的端点, 意思是说如果某个service具有prometheus.io/scrape = true的annotation声明则抓取,annotation本身也是键值结构, 所以这里的源标签设置为键,而regex设置值true,当值匹配到regex设定的内容时则执行keep动作也就是保留,其余则丢弃。- source_labels: [__meta_kubernetes_service_annotation_prometheus_io_scheme]action: replacetarget_label: __scheme__regex: (https?)#重新设置scheme,匹配源标签__meta_kubernetes_service_annotation_prometheus_io_scheme也就是prometheus.io/scheme annotation,如果源标签的值匹配到regex,则把值替换为__scheme__对应的值。- source_labels: [__meta_kubernetes_service_annotation_prometheus_io_path]action: replacetarget_label: __metrics_path__regex: (.+)#应用中自定义暴露的指标,也许你暴露的API接口不是/metrics这个路径,那么你可以在这个POD对应的service中做一个 "prometheus.io/path = /mymetrics" 声明,上面的意思就是把你声明的这个路径赋值给__metrics_path__, 其实就是让prometheus来获取自定义应用暴露的metrices的具体路径, 不过这里写的要和service中做好约定,如果service中这样写 prometheus.io/app-metrics-path: '/metrics' 那么你这里就要__meta_kubernetes_service_annotation_prometheus_io_app_metrics_path这样写。- source_labels: [__address__, __meta_kubernetes_service_annotation_prometheus_io_port]action: replacetarget_label: __address__regex: ([^:]+)(?::\d+)?;(\d+)replacement: $1:$2#暴露自定义的应用的端口,就是把地址和你在service中定义的 "prometheus.io/port = <port>" 声明做一个拼接, 然后赋值给__address__,这样prometheus就能获取自定义应用的端口,然后通过这个端口再结合__metrics_path__来获取指标,如果__metrics_path__值不是默认的/metrics那么就要使用上面的标签替换来获取真正暴露的具体路径。- action: labelmap #保留下面匹配到的标签regex: __meta_kubernetes_service_label_(.+)- source_labels: [__meta_kubernetes_namespace]action: replace #替换__meta_kubernetes_namespace变成kubernetes_namespacetarget_label: kubernetes_namespace- source_labels: [__meta_kubernetes_service_name]action: replacetarget_label: kubernetes_namekubectl apply -f prometheus-cfg.yaml
3.通过Deployment方式部署Prometheus
#将 prometheus 调度到 node1 节点,在 node1 节点创建 prometheus 数据存储目录
#在node1节点操作mkdir /data && chmod 777 /data#通过 deployment 部署 prometheus
#在Master节点操作vim prometheus-deploy.yaml---
apiVersion: apps/v1
kind: Deployment
metadata:name: prometheus-servernamespace: monitor-salabels:app: prometheus
spec:replicas: 1selector:matchLabels:app: prometheuscomponent: server#matchExpressions:#- {key: app, operator: In, values: [prometheus]}#- {key: component, operator: In, values: [server]}template:metadata:labels:app: prometheuscomponent: serverannotations:prometheus.io/scrape: 'false'spec:nodeName: node1#指定pod调度到哪个节点上 serviceAccountName: monitorcontainers:- name: prometheusimage: prom/prometheus:v2.2.1imagePullPolicy: IfNotPresentcommand:- prometheus- --config.file=/etc/prometheus/prometheus.yml- --storage.tsdb.path=/prometheus#数据存储目录- --storage.tsdb.retention=720h#数据保存时长- --web.enable-lifecycle#开启热加载ports:- containerPort: 9090protocol: TCPvolumeMounts:- mountPath: /etc/prometheus/prometheus.ymlname: prometheus-configsubPath: prometheus.yml- mountPath: /prometheus/name: prometheus-storage-volumevolumes:- name: prometheus-configconfigMap:name: prometheus-configitems:- key: prometheus.ymlpath: prometheus.ymlmode: 0644- name: prometheus-storage-volumehostPath:path: /datatype: Directorykubectl apply -f prometheus-deploy.yamlkubectl get pods -o wide -n monitor-sa
4.创建Service
vim prometheus-svc.yaml---
apiVersion: v1
kind: Service
metadata:name: prometheusnamespace: monitor-salabels:app: prometheus
spec:type: NodePortports:- port: 9090targetPort: 9090protocol: TCPnodePort: 31000selector:app: prometheuscomponent: serverkubectl apply -f prometheus-svc.yamlkubectl get svc -n monitor-sa#通过上面可以看到 service 在 node 节点上映射的端口是 31000,这样我们访问 k8s 集群的 node 节点的 ip:31000,就可以访问到 prometheus 的 web ui 界面了。
浏览器访问 http://192.168.241.22:31000
#点击页面的Status->Targets,如看到所有 Target 状态都为 UP,说明我们配置的服务发现可以正常采集数据#查询 K8S 集群中一分钟之内每个 Pod 的 CPU 使用率
sum by (name)( rate(container_cpu_usage_seconds_total{image!="", name!=""}[1m] ) )
三、Prometheus配置热加载
#为了每次修改配置文件可以热加载prometheus,也就是不停止prometheus,就可以使配置生效,想要使配置生效可用如下热加载命令:
kubectl get pods -n monitor-sa -o wide -l app=prometheus#想要使配置生效可用如下命令热加载
curl -X POST -Ls http://10.244.1.3:9090/-/reload #查看 log
kubectl logs -n monitor-sa prometheus-server-75fb7f8fc6-8vxwj | grep "Loading configuration file"
#一般热加载速度比较慢,可以暴力重启prometheus,如修改上面的 prometheus-cfg.yaml 文件之后,可用如下命令:
#可执行先强制删除,然后再通过 apply 更新
kubectl delete -f prometheus-cfg.yaml
kubectl delete -f prometheus-deploy.yaml
kubectl apply -f prometheus-cfg.yaml
kubectl apply -f prometheus-deploy.yaml#注意:线上环境最好使用热加载,暴力删除可能造成监控数据的丢失
四、Grafana安装
vim grafana.yaml---
apiVersion: apps/v1
kind: Deployment
metadata:name: monitoring-grafananamespace: kube-system
spec:replicas: 1selector:matchLabels:task: monitoringk8s-app: grafanatemplate:metadata:labels:task: monitoringk8s-app: grafanaspec:containers:- name: grafanaimage: grafana/grafana:5.0.4ports:- containerPort: 3000protocol: TCPvolumeMounts:- mountPath: /etc/ssl/certsname: ca-certificatesreadOnly: true- mountPath: /varname: grafana-storageenv:- name: INFLUXDB_HOSTvalue: monitoring-influxdb- name: GF_SERVER_HTTP_PORTvalue: "3000"# The following env variables are required to make Grafana accessible via# the kubernetes api-server proxy. On production clusters, we recommend# removing these env variables, setup auth for grafana, and expose the grafana# service using a LoadBalancer or a public IP.- name: GF_AUTH_BASIC_ENABLEDvalue: "false"- name: GF_AUTH_ANONYMOUS_ENABLEDvalue: "true"- name: GF_AUTH_ANONYMOUS_ORG_ROLEvalue: Admin- name: GF_SERVER_ROOT_URL# If you're only using the API Server proxy, set this value instead:# value: /api/v1/namespaces/kube-system/services/monitoring-grafana/proxyvalue: /volumes:- name: ca-certificateshostPath:path: /etc/ssl/certs- name: grafana-storageemptyDir: {}
---
apiVersion: v1
kind: Service
metadata:labels:# For use as a Cluster add-on (https://github.com/kubernetes/kubernetes/tree/master/cluster/addons)# If you are NOT using this as an addon, you should comment out this line.kubernetes.io/cluster-service: 'true'kubernetes.io/name: monitoring-grafananame: monitoring-grafananamespace: kube-system
spec:# In a production setup, we recommend accessing Grafana through an external Loadbalancer# or through a public IP.# type: LoadBalancer# You could also use NodePort to expose the service at a randomly-generated port# type: NodePortports:- port: 80targetPort: 3000selector:k8s-app: grafanatype: NodePortkubectl apply -f grafana.yamlkubectl get pods -n kube-system -l task=monitoring -o widekubectl get svc -n kube-system | grep grafana
浏览器访问http://192.168.241.23:32087 ,登陆 grafana
开始配置 grafana 的 web 界面:选择 Add data source
【Name】设置成 Prometheus
【Type】选择 Prometheus
【URL】设置成 http://prometheus.monitor-sa.svc:9090 #使用service的集群内部端口配置服务端地址
点击 【Save & Test】
导入监控模板
官方链接搜索:https://grafana.com/dashboards?dataSource=prometheus&search=kubernetes
监控 node 状态
点击左侧+号选择【Import】
点击【Upload .json File】导入 node_exporter.json 模板
【Prometheus】选择 Prometheus
点击【Import】
监控 容器 状态
点击左侧+号选择【Import】
点击【Upload .json File】导入 docker_rev1.json 模板
【Prometheus】选择 Prometheus
点击【Import】
五、K8s部署Kube-State-Metrics
1.创建Kube-State-Metrics
#创建 sa,并对 sa 授权vim kube-state-metrics-rbac.yaml ---
apiVersion: v1
kind: ServiceAccount
metadata:name: kube-state-metricsnamespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:name: kube-state-metrics
rules:
- apiGroups: [""]resources: ["nodes", "pods", "services", "resourcequotas", "replicationcontrollers", "limitranges", "persistentvolumeclaims", "persistentvolumes", "namespaces", "endpoints"]verbs: ["list", "watch"]
- apiGroups: ["extensions"]resources: ["daemonsets", "deployments", "replicasets"]verbs: ["list", "watch"]
- apiGroups: ["apps"]resources: ["statefulsets"]verbs: ["list", "watch"]
- apiGroups: ["batch"]resources: ["cronjobs", "jobs"]verbs: ["list", "watch"]
- apiGroups: ["autoscaling"]resources: ["horizontalpodautoscalers"]verbs: ["list", "watch"]
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:name: kube-state-metrics
roleRef:apiGroup: rbac.authorization.k8s.iokind: ClusterRolename: kube-state-metrics
subjects:
- kind: ServiceAccountname: kube-state-metricsnamespace: kube-systemkubectl apply -f kube-state-metrics-rbac.yaml#安装 kube-state-metrics 组件和 service
vim kube-state-metrics-deploy.yaml ---
apiVersion: apps/v1
kind: Deployment
metadata:name: kube-state-metricsnamespace: kube-system
spec:replicas: 1selector:matchLabels:app: kube-state-metricstemplate:metadata:labels:app: kube-state-metricsspec:serviceAccountName: kube-state-metricscontainers:- name: kube-state-metricsimage: quay.io/coreos/kube-state-metrics:v1.9.0ports:- containerPort: 8080
---
apiVersion: v1
kind: Service
metadata:annotations:prometheus.io/scrape: 'true'name: kube-state-metricsnamespace: kube-systemlabels:app: kube-state-metrics
spec:ports:- name: kube-state-metricsport: 8080protocol: TCPselector:app: kube-state-metricskubectl apply -f kube-state-metrics-deploy.yamlkubectl get pods,svc -n kube-system -l app=kube-state-metrics
2.Grafana配置
#监控 k8s 群集状态
点击左侧+号选择【Import】
点击【Upload .json File】导入 kubernetes-cluster-prometheus_rev4.json 模板
【Prometheus】选择 Prometheus
点击【Import】
#监控 k8s 群集性能状态
点击左侧+号选择【Import】
点击【Upload .json File】导入 kubernetes-cluster-monitoring-via-prometheus_rev3.json 模板
【Prometheus】选择 Prometheus
点击【Import】
六、Kubernetes配置Alertmanager发送报警到邮箱
1.Prometheus报警处理流程
- Prometheus Server 监控目标主机上暴露的 http接口(假设接口A),通过Promethes配置的'scrape_interval' 定义的时间间隔, 定期采集目标主机上监控数据。
- 当接口A不可用的时候,Server 端会持续的尝试从接口中取数据,直到 "scrape_timeout" 时间后停止尝试。 这时候把接口的状态变为 "DOWN"。
- Prometheus 同时根据配置的 evaluation_interval 的时间间隔,定期(默认1min)的对 Alert Rule 进行评估; 当到达评估周期的时候,发现接口A为 DOWN,即 UP=0 为真,激活 Alert,进入 PENDING 状态,并记录当前 active 的时间;
- 当下一个 alert rule 的评估周期到来的时候,发现 UP=0 继续为真,然后判断警报 Active 的时间是否已经超出 rule 里的 for 持续时间,如果未超出,则进入下一个评估周期;如果时间超出,则 alert 的状态变为 FIRING;同时调用 Alertmanager 接口, 发送相关报警数据。
- AlertManager 收到报警数据后,会将警报信息进行分组,然后根据 alertmanager 配置的 group_wait 时间先进行等待。等 wait 时间过后再发送报警信息。
- 属于同一个 Alert Group的警报,在等待的过程中可能进入新的 alert,如果之前的报警已经成功发出,那么间隔 group_interval 的时间间隔后再重新发送报警信息。比如配置的是邮件报警,那么同属一个 group 的报警信息会汇总在一个邮件里进行发送。
- 如果 Alert Group里的警报一直没发生变化并且已经成功发送,等待 repeat_interval 时间间隔之后再重复发送相同的报警邮件; 如果之前的警报没有成功发送,则相当于触发第6条条件,则需要等待 group_interval 时间间隔后重复发送。
- 同时最后至于警报信息具体发给谁,满足什么样的条件下指定警报接收人,设置不同报警发送频率,这里使用 alertmanager 的 route 路由规则进行配置。
2.Prometheus及Alertmanager配置
2.1创建Alertmanager配置文件
vim alertmanager-cm.yaml
---
kind: ConfigMap
apiVersion: v1
metadata:name: alertmanagernamespace: monitor-sa
data:alertmanager.yml: |-global:#设置发件人邮箱信息resolve_timeout: 1msmtp_smarthost: 'smtp.qq.com:25'smtp_from: '524184026@qq.com'smtp_auth_username: '524184026@qq.com'smtp_auth_password: 'rqvbqmwdpoxfcbdf'#此处为授权码,登录QQ邮箱【设置】->【账户】中的【生成授权码】获取smtp_require_tls: falseroute:#用于设置告警的分发策略group_by: [alertname]#采用哪个标签来作为分组依据group_wait: 10s#组告警等待时间。也就是告警产生后等待10s,如果有同组告警一起发出group_interval: 10s#上下两组发送告警的间隔时间repeat_interval: 10m#重复发送告警的时间,减少相同邮件的发送频率,默认是1hreceiver: default-receiver#定义谁来收告警receivers:#设置收件人邮箱信息- name: 'default-receiver'email_configs:- to: '524184026@qq.com'#设置收件人邮箱地址send_resolved: truekubectl apply -f alertmanager-cm.yaml
2.2创建 Prometheus 和告警规则配置文件
#上传 prometheus-alertmanager-cfg.yaml 文件#删除之前的配置,更新配置
kubectl delete -f prometheus-cfg.yaml
kubectl apply -f prometheus-alertmanager-cfg.yamlkubectl get cm -n monitor-sa
3.安装Prometheus 和 Alertmanager
#生成一个 secret 资源 etcd-certs,这个在部署 prometheus 需要,用于监控 etcd 相关资源
kubectl -n monitor-sa create secret generic etcd-certs --from-file=/etc/kubernetes/pki/etcd/server.key --from-file=/etc/kubernetes/pki/etcd/server.crt --from-file=/etc/kubernetes/pki/etcd/ca.crt#更新资源清单 yaml 文件,安装 prometheus 和 alertmanager
vim prometheus-alertmanager-deploy.yaml
---
apiVersion: apps/v1
kind: Deployment
metadata:name: prometheus-servernamespace: monitor-salabels:app: prometheus
spec:replicas: 1selector:matchLabels:app: prometheuscomponent: server#matchExpressions:#- {key: app, operator: In, values: [prometheus]}#- {key: component, operator: In, values: [server]}template:metadata:labels:app: prometheuscomponent: serverannotations:prometheus.io/scrape: 'false'spec:nodeName: node01serviceAccountName: monitorcontainers:- name: prometheusimage: prom/prometheus:v2.2.1imagePullPolicy: IfNotPresentcommand:- "/bin/prometheus"args:- "--config.file=/etc/prometheus/prometheus.yml"- "--storage.tsdb.path=/prometheus"- "--storage.tsdb.retention=24h"- "--web.enable-lifecycle"ports:- containerPort: 9090protocol: TCPvolumeMounts:- mountPath: /etc/prometheusname: prometheus-config- mountPath: /prometheus/name: prometheus-storage-volume- name: k8s-certsmountPath: /var/run/secrets/kubernetes.io/k8s-certs/etcd/- name: localtimemountPath: /etc/localtime- name: alertmanagerimage: prom/alertmanager:v0.14.0imagePullPolicy: IfNotPresentargs:- "--config.file=/etc/alertmanager/alertmanager.yml"- "--log.level=debug"ports:- containerPort: 9093protocol: TCPname: alertmanagervolumeMounts:- name: alertmanager-configmountPath: /etc/alertmanager- name: alertmanager-storagemountPath: /alertmanager- name: localtimemountPath: /etc/localtimevolumes:- name: prometheus-configconfigMap:name: prometheus-config- name: prometheus-storage-volumehostPath:path: /datatype: Directory- name: k8s-certssecret:secretName: etcd-certs- name: alertmanager-configconfigMap:name: alertmanager- name: alertmanager-storagehostPath:path: /data/alertmanagertype: DirectoryOrCreate- name: localtimehostPath:path: /usr/share/zoneinfo/Asia/Shanghaikubectl delete -f prometheus-deploy.yaml
kubectl apply -f prometheus-alertmanager-deploy.yamlkubectl get pods -n monitor-sa | grep prometheus
4.部署Alertmanager的Service
vim alertmanager-svc.yaml
---
apiVersion: v1
kind: Service
metadata:labels:name: prometheuskubernetes.io/cluster-service: 'true'name: alertmanagernamespace: monitor-sa
spec:ports:- name: alertmanagernodePort: 30066port: 9093protocol: TCPtargetPort: 9093selector:app: prometheussessionAffinity: Nonetype: NodePortkubectl apply -f alertmanager-svc.yaml#查看 service 在物理机映射的端口
kubectl get svc -n monitor-sa#此时可以看到 prometheus 的 service 在物理机映射的端口是 31000,alertmanager 的 service 在物理机映射的端口是 30066浏览器访问 http://192.168.241.22:30066/#/alerts ,登陆 alertmanager查看接收到的邮件报警,可以发现与 alertmanager 显示的告警一致浏览器访问 http://192.168.241.22:31000 ,点击页面的 Status->Targets,查看 prometheus 的 targets
5.处理Kube-Proxy监控告警
kubectl edit configmap kube-proxy -n kube-system
......
metricsBindAddress: "0.0.0.0:10249"
#因为 kube-proxy 默认端口10249是监听在 127.0.0.1 上的,需要改成监听到物理节点上#重新启动 kube-proxy
kubectl get pods -n kube-system | grep kube-proxy |awk '{print $1}' | xargs kubectl delete pods -n kube-systemss -antulp |grep :10249#alert 查看
点击 prometheus 页面的 Alerts,点开一个告警项,FIRING 表示 prometheus 已经将告警发给 alertmanager,在 Alertmanager 中可以看到有一个 alert。登录到 浏览器访问 http://192.168.241.22:30066/#/alerts ,登陆 alertmanager 即可看到。