一、概述
首先Prometheus整体监控结构略微复杂，一个个部署并不简单。另外监控Kubernetes就需要访问内部数据，必定需要进行认证、鉴权、准入控制，
那么这一整套下来将变得难上加难，而且还需要花费一定的时间，如果你没有特别高的要求，我还是建议选用开源比较好的一些方案。
关于Prometheus具体介绍不再多说，可以参考另外一篇博文：Kubernetes实战总结 - Prometheus部署（v0.3.0）
本篇主要针对Kubernetes部署Prometheus相关配置介绍，本人采用的是github开源的部署方案：
关于这个kube-prometheus目前应该是开源最好的方案了，该存储库收集Kubernetes清单，Grafana仪表板和Prometheus规则，以及文档和脚本，
以使用Prometheus Operator 通过Prometheus提供易于操作的端到端Kubernetes集群监视。以容器的方式部署到k8s集群，而且还可以自定义配置，非常的方便。
注意：本人使用的kubernetes-1.17.5 + release-0.3，由于网络问题本人已修改全部镜像地址。
二、结构分析
kube-prometheus相关部署文件在manifests目录中，共65个yaml，其中setup文件夹中包含所有自定义资源配置CustomResourceDefinition（一般不用修改，也不要轻易修改），所以部署时必须先执行这个文件夹。
其中包括告警(Alertmanager)、监控(Prometheus)、监控项(PrometheusRule)这三类资源定义，所以如果你想直接在k8s中修改对应控制器配置是没有用的（比如kubectl edit sts prometheus-k8s -n monitoring） 。
这里yaml文件看着很多，只要我们梳理一下就会很容易理解了，首先分为7个组件prometheus-operator、prometheus-adapter、prometheus、alertmanager、grafana、kube-state-metrics、node-exporter，
然后每个组件都会定义控制器、配置文件、集群权限、访问配置等， 但是我们一般只需要进行自定义告警配置和监控项，这样一筛选发现只需要修改几个文件即可（其中红色后面重点说明，紫色可根据项目情况调整资源配置）。
[root@ymt108 manifests]# tree . ├── alertmanager-alertmanager.yaml ├── alertmanager-secret.yaml # 告警配置 ├── alertmanager-serviceAccount.yaml ├── alertmanager-serviceMonitor.yaml ├── alertmanager-service.yaml ├── grafana-dashboardDatasources.yaml ├── grafana-dashboardDefinitions.yaml ├── grafana-dashboardSources.yaml ├── grafana-deployment.yaml ├── grafana-serviceAccount.yaml ├── grafana-serviceMonitor.yaml ├── grafana-service.yaml ├── kube-state-metrics-clusterRoleBinding.yaml ├── kube-state-metrics-clusterRole.yaml ├── kube-state-metrics-deployment.yaml ├── kube-state-metrics-roleBinding.yaml ├── kube-state-metrics-role.yaml ├── kube-state-metrics-serviceAccount.yaml ├── kube-state-metrics-serviceMonitor.yaml ├── kube-state-metrics-service.yaml ├── node-exporter-clusterRoleBinding.yaml ├── node-exporter-clusterRole.yaml ├── node-exporter-daemonset.yaml ├── node-exporter-serviceAccount.yaml ├── node-exporter-serviceMonitor.yaml ├── node-exporter-service.yaml ├── prometheus-adapter-apiService.yaml ├── prometheus-adapter-clusterRoleAggregatedMetricsReader.yaml ├── prometheus-adapter-clusterRoleBindingDelegator.yaml ├── prometheus-adapter-clusterRoleBinding.yaml ├── prometheus-adapter-clusterRoleServerResources.yaml ├── prometheus-adapter-clusterRole.yaml ├── prometheus-adapter-configMap.yaml ├── prometheus-adapter-deployment.yaml ├── prometheus-adapter-roleBindingAuthReader.yaml ├── prometheus-adapter-serviceAccount.yaml ├── prometheus-adapter-service.yaml ├── prometheus-clusterRoleBinding.yaml ├── prometheus-clusterRole.yaml ├── prometheus-operator-serviceMonitor.yaml ├── prometheus-prometheus.yaml # 监控配置 ├── prometheus-roleBindingConfig.yaml ├── prometheus-roleBindingSpecificNamespaces.yaml ├── prometheus-roleConfig.yaml ├── prometheus-roleSpecificNamespaces.yaml ├── prometheus-rules.yaml # 默认监控项 ├── prometheus-serviceAccount.yaml ├── prometheus-serviceMonitorApiserver.yaml ├── prometheus-serviceMonitorCoreDNS.yaml ├── prometheus-serviceMonitorKubeControllerManager.yaml ├── prometheus-serviceMonitorKubelet.yaml ├── prometheus-serviceMonitorKubeScheduler.yaml ├── prometheus-serviceMonitor.yaml ├── prometheus-service.yaml └── setup ├── 0namespace-namespace.yaml ├── prometheus-operator-0alertmanagerCustomResourceDefinition.yaml ├── prometheus-operator-0podmonitorCustomResourceDefinition.yaml ├── prometheus-operator-0prometheusCustomResourceDefinition.yaml ├── prometheus-operator-0prometheusruleCustomResourceDefinition.yaml ├── prometheus-operator-0servicemonitorCustomResourceDefinition.yaml ├── prometheus-operator-clusterRoleBinding.yaml ├── prometheus-operator-clusterRole.yaml ├── prometheus-operator-deployment.yaml ├── prometheus-operator-serviceAccount.yaml └── prometheus-operator-service.yaml 1 directories, 65 files
三、修改Prometheus配置
为了保留原始文件，我们复制一份prometheus-prometheus.yaml进行如下修改：
1）replicas：根据项目情况调整副本数
2）retention：修改Prometheus数据保留期限，默认值为“24h”，并且必须与正则表达式“ [0-9] +（ms | s | m | h | d | w | y）”匹配。
3）additionalScrapeConfigs：增加额外监控项配置，具体配置查看第五部分“添加k8s外部监控”。
apiVersion: monitoring.coreos.com/v1 kind: Prometheus metadata: labels: prometheus: k8s name: k8s namespace: monitoring spec: alerting: alertmanagers: - name: alertmanager-main namespace: monitoring port: web # baseImage: quay.io/prometheus/prometheus baseImage: registry.cn-shanghai.aliyuncs.com/leozhanggg/prometheus/prometheus additionalScrapeConfigs: name: additional-scrape-configs key: prometheus-additional.yaml retention: 15d nodeSelector: kubernetes.io/os: linux podMonitorSelector: {} replicas: 2 resources: requests: memory: 400Mi ruleSelector: matchLabels: prometheus: k8s role: alert-rules securityContext: fsGroup: 2000 runAsNonRoot: true runAsUser: 1000 serviceAccountName: prometheus-k8s serviceMonitorNamespaceSelector: {} serviceMonitorSelector: {} version: v2.11.0
四、修改PrometheusRule配置
首先查看默认监控项配置prometheus-rules.yaml，其中包括76个告警项，基本覆盖了k8s常用监控点，同样为了保留源文件，我们复制一份prometheus-rules.yaml进行一些修改。
由于我使用的版本在裸机k8s集群上存在无法获取到scheduler和controller资源问题，被我注释了；另外由于general-rules规则与我自定义规则冲突也被我注释了；
最后增加了platform参数区分环境，以及进行部分提示语中译。
apiVersion: monitoring.coreos.com/v1 kind: PrometheusRule metadata: labels: prometheus: k8s role: alert-rules name: prometheus-k8s-rules namespace: monitoring spec: groups: - name: node-exporter.rules rules: - expr: | count without (cpu) ( count without (mode) ( node_cpu_seconds_total{job="node-exporter"} ) ) record: instance:node_num_cpu:sum - expr: | 1 - avg without (cpu, mode) ( rate(node_cpu_seconds_total{job="node-exporter", mode="idle"}[1m]) ) record: instance:node_cpu_utilisation:rate1m - expr: | ( node_load1{job="node-exporter"} / instance:node_num_cpu:sum{job="node-exporter"} ) record: instance:node_load1_per_cpu:ratio - expr: | 1 - ( node_memory_MemAvailable_bytes{job="node-exporter"} / node_memory_MemTotal_bytes{job="node-exporter"} ) record: instance:node_memory_utilisation:ratio - expr: | rate(node_vmstat_pgmajfault{job="node-exporter"}[1m]) record: instance:node_vmstat_pgmajfault:rate1m - expr: | rate(node_disk_io_time_seconds_total{job="node-exporter", device=~"nvme.+|rbd.+|sd.+|vd.+|xvd.+|dm-.+"}[1m]) record: instance_device:node_disk_io_time_seconds:rate1m - expr: | rate(node_disk_io_time_weighted_seconds_total{job="node-exporter", device=~"nvme.+|rbd.+|sd.+|vd.+|xvd.+|dm-.+"}[1m]) record: instance_device:node_disk_io_time_weighted_seconds:rate1m - expr: | sum without (device) ( rate(node_network_receive_bytes_total{job="node-exporter", device!="lo"}[1m]) ) record: instance:node_network_receive_bytes_excluding_lo:rate1m - expr: | sum without (device) ( rate(node_network_transmit_bytes_total{job="node-exporter", device!="lo"}[1m]) ) record: instance:node_network_transmit_bytes_excluding_lo:rate1m - expr: | sum without (device) ( rate(node_network_receive_drop_total{job="node-exporter", device!="lo"}[1m]) ) record: instance:node_network_receive_drop_excluding_lo:rate1m - expr: | sum without (device) ( rate(node_network_transmit_drop_total{job="node-exporter", device!="lo"}[1m]) ) record: instance:node_network_transmit_drop_excluding_lo:rate1m - name: kube-apiserver.rules rules: - expr: | histogram_quantile(0.99, sum(rate(apiserver_request_duration_seconds_bucket{job="apiserver"}[5m])) without(instance, pod)) labels: quantile: "0.99" record: cluster_quantile:apiserver_request_duration_seconds:histogram_quantile - expr: | histogram_quantile(0.9, sum(rate(apiserver_request_duration_seconds_bucket{job="apiserver"}[5m])) without(instance, pod)) labels: quantile: "0.9" record: cluster_quantile:apiserver_request_duration_seconds:histogram_quantile - expr: | histogram_quantile(0.5, sum(rate(apiserver_request_duration_seconds_bucket{job="apiserver"}[5m])) without(instance, pod)) labels: quantile: "0.5" record: cluster_quantile:apiserver_request_duration_seconds:histogram_quantile - name: k8s.rules rules: - expr: | sum(rate(container_cpu_usage_seconds_total{job="kubelet", image!="", container!="POD"}[5m])) by (namespace) record: namespace:container_cpu_usage_seconds_total:sum_rate - expr: | sum by (namespace, pod, container) ( rate(container_cpu_usage_seconds_total{job="kubelet", image!="", container!="POD"}[5m]) ) * on (namespace, pod) group_left(node) max by(namespace, pod, node) (kube_pod_info) record: node_namespace_pod_container:container_cpu_usage_seconds_total:sum_rate - expr: | container_memory_working_set_bytes{job="kubelet", image!=""} * on (namespace, pod) group_left(node) max by(namespace, pod, node) (kube_pod_info) record: node_namespace_pod_container:container_memory_working_set_bytes - expr: | container_memory_rss{job="kubelet", image!=""} * on (namespace, pod) group_left(node) max by(namespace, pod, node) (kube_pod_info) record: node_namespace_pod_container:container_memory_rss - expr: | container_memory_cache{job="kubelet", image!=""} * on (namespace, pod) group_left(node) max by(namespace, pod, node) (kube_pod_info) record: node_namespace_pod_container:container_memory_cache - expr: | container_memory_swap{job="kubelet", image!=""} * on (namespace, pod) group_left(node) max by(namespace, pod, node) (kube_pod_info) record: node_namespace_pod_container:container_memory_swap - expr: | sum(container_memory_usage_bytes{job="kubelet", image!="", container!="POD"}) by (namespace) record: namespace:container_memory_usage_bytes:sum - expr: | sum by (namespace, label_name) ( sum(kube_pod_container_resource_requests_memory_bytes{job="kube-state-metrics"} * on (endpoint, instance, job, namespace, pod, service) group_left(phase) (kube_pod_status_phase{phase=~"Pending|Running"} == 1)) by (namespace, pod) * on (namespace, pod) group_left(label_name) kube_pod_labels{job="kube-state-metrics"} ) record: namespace:kube_pod_container_resource_requests_memory_bytes:sum - expr: | sum by (namespace, label_name) ( sum(kube_pod_container_resource_requests_cpu_cores{job="kube-state-metrics"} * on (endpoint, instance, job, namespace, pod, service) group_left(phase) (kube_pod_status_phase{phase=~"Pending|Running"} == 1)) by (namespace, pod) * on (namespace, pod) group_left(label_name) kube_pod_labels{job="kube-state-metrics"} ) record: namespace:kube_pod_container_resource_requests_cpu_cores:sum - expr: | sum( label_replace( label_replace( kube_pod_owner{job="kube-state-metrics", owner_kind="ReplicaSet"}, "replicaset", "$1", "owner_name", "(.*)" ) * on(replicaset, namespace) group_left(owner_name) kube_replicaset_owner{job="kube-state-metrics"}, "workload", "$1", "owner_name", "(.*)" ) ) by (namespace, workload, pod) labels: workload_type: deployment record: mixin_pod_workload - expr: | sum( label_replace( kube_pod_owner{job="kube-state-metrics", owner_kind="DaemonSet"}, "workload", "$1", "owner_name", "(.*)" ) ) by (namespace, workload, pod) labels: workload_type: daemonset record: mixin_pod_workload - expr: | sum( label_replace( kube_pod_owner{job="kube-state-metrics", owner_kind="StatefulSet"}, "workload", "$1", "owner_name", "(.*)" ) ) by (namespace, workload, pod) labels: workload_type: statefulset record: mixin_pod_workload - name: kube-scheduler.rules rules: - expr: | histogram_quantile(0.99, sum(rate(scheduler_e2e_scheduling_duration_seconds_bucket{job="kube-scheduler"}[5m])) without(instance, pod)) labels: quantile: "0.99" record: cluster_quantile:scheduler_e2e_scheduling_duration_seconds:histogram_quantile - expr: | histogram_quantile(0.99, sum(rate(scheduler_scheduling_algorithm_duration_seconds_bucket{job="kube-scheduler"}[5m])) without(instance, pod)) labels: quantile: "0.99" record: cluster_quantile:scheduler_scheduling_algorithm_duration_seconds:histogram_quantile - expr: | histogram_quantile(0.99, sum(rate(scheduler_binding_duration_seconds_bucket{job="kube-scheduler"}[5m])) without(instance, pod)) labels: quantile: "0.99" record: cluster_quantile:scheduler_binding_duration_seconds:histogram_quantile - expr: | histogram_quantile(0.9, sum(rate(scheduler_e2e_scheduling_duration_seconds_bucket{job="kube-scheduler"}[5m])) without(instance, pod)) labels: quantile: "0.9" record: cluster_quantile:scheduler_e2e_scheduling_duration_seconds:histogram_quantile - expr: | histogram_quantile(0.9, sum(rate(scheduler_scheduling_algorithm_duration_seconds_bucket{job="kube-scheduler"}[5m])) without(instance, pod)) labels: quantile: "0.9" record: cluster_quantile:scheduler_scheduling_algorithm_duration_seconds:histogram_quantile - expr: | histogram_quantile(0.9, sum(rate(scheduler_binding_duration_seconds_bucket{job="kube-scheduler"}[5m])) without(instance, pod)) labels: quantile: "0.9" record: cluster_quantile:scheduler_binding_duration_seconds:histogram_quantile - expr: | histogram_quantile(0.5, sum(rate(scheduler_e2e_scheduling_duration_seconds_bucket{job="kube-scheduler"}[5m])) without(instance, pod)) labels: quantile: "0.5" record: cluster_quantile:scheduler_e2e_scheduling_duration_seconds:histogram_quantile - expr: | histogram_quantile(0.5, sum(rate(scheduler_scheduling_algorithm_duration_seconds_bucket{job="kube-scheduler"}[5m])) without(instance, pod)) labels: quantile: "0.5" record: cluster_quantile:scheduler_scheduling_algorithm_duration_seconds:histogram_quantile - expr: | histogram_quantile(0.5, sum(rate(scheduler_binding_duration_seconds_bucket{job="kube-scheduler"}[5m])) without(instance, pod)) labels: quantile: "0.5" record: cluster_quantile:scheduler_binding_duration_seconds:histogram_quantile - name: node.rules rules: - expr: sum(min(kube_pod_info) by (node)) record: ':kube_pod_info_node_count:' - expr: | max(label_replace(kube_pod_info{job="kube-state-metrics"}, "pod", "$1", "pod", "(.*)")) by (node, namespace, pod) record: 'node_namespace_pod:kube_pod_info:' - expr: | count by (node) (sum by (node, cpu) ( node_cpu_seconds_total{job="node-exporter"} * on (namespace, pod) group_left(node) node_namespace_pod:kube_pod_info: )) record: node:node_num_cpu:sum - expr: | sum( node_memory_MemAvailable_bytes{job="node-exporter"} or ( node_memory_Buffers_bytes{job="node-exporter"} + node_memory_Cached_bytes{job="node-exporter"} + node_memory_MemFree_bytes{job="node-exporter"} + node_memory_Slab_bytes{job="node-exporter"} ) ) record: :node_memory_MemAvailable_bytes:sum - name: kube-prometheus-node-recording.rules rules: - expr: sum(rate(node_cpu_seconds_total{mode!="idle",mode!="iowait"}[3m])) BY (instance) record: instance:node_cpu:rate:sum - expr: sum((node_filesystem_size_bytes{mountpoint="/"} - node_filesystem_free_bytes{mountpoint="/"})) BY (instance) record: instance:node_filesystem_usage:sum - expr: sum(rate(node_network_receive_bytes_total[3m])) BY (instance) record: instance:node_network_receive_bytes:rate:sum - expr: sum(rate(node_network_transmit_bytes_total[3m])) BY (instance) record: instance:node_network_transmit_bytes:rate:sum - expr: sum(rate(node_cpu_seconds_total{mode!="idle",mode!="iowait"}[5m])) WITHOUT (cpu, mode) / ON(instance) GROUP_LEFT() count(sum(node_cpu_seconds_total) BY (instance, cpu)) BY (instance) record: instance:node_cpu:ratio - expr: sum(rate(node_cpu_seconds_total{mode!="idle",mode!="iowait"}[5m])) record: cluster:node_cpu:sum_rate5m - expr: cluster:node_cpu_seconds_total:rate5m / count(sum(node_cpu_seconds_total) BY (instance, cpu)) record: cluster:node_cpu:ratio - name: node-exporter rules: - alert: NodeFilesystemSpaceFillingUp annotations: platform: "测试平台" description: Filesystem on {{ $labels.device }} at {{ $labels.instance }} has only {{ printf "%.2f" $value }}% available space left and is filling up. summary: "预计文件系统将在接下来的24小时内用完空间。" expr: | ( node_filesystem_avail_bytes{job="node-exporter",fstype!=""} / node_filesystem_size_bytes{job="node-exporter",fstype!=""} * 100 < 40 and predict_linear(node_filesystem_avail_bytes{job="node-exporter",fstype!=""}[6h], 24*60*60) < 0 and node_filesystem_readonly{job="node-exporter",fstype!=""} == 0 ) for: 1h labels: severity: warning - alert: NodeFilesystemSpaceFillingUp annotations: platform: "测试平台" description: Filesystem on {{ $labels.device }} at {{ $labels.instance }} has only {{ printf "%.2f" $value }}% available space left and is filling up fast. summary: "预计文件系统将在接下来的4个小时内用完空间。" expr: | ( node_filesystem_avail_bytes{job="node-exporter",fstype!=""} / node_filesystem_size_bytes{job="node-exporter",fstype!=""} * 100 < 20 and predict_linear(node_filesystem_avail_bytes{job="node-exporter",fstype!=""}[6h], 4*60*60) < 0 and node_filesystem_readonly{job="node-exporter",fstype!=""} == 0 ) for: 1h labels: severity: critical - alert: NodeFilesystemAlmostOutOfSpace annotations: platform: "测试平台" description: Filesystem on {{ $labels.device }} at {{ $labels.instance }} has only {{ printf "%.2f" $value }}% available space left. summary: "文件系统剩余空间不到5％。" expr: | ( node_filesystem_avail_bytes{job="node-exporter",fstype!=""} / node_filesystem_size_bytes{job="node-exporter",fstype!=""} * 100 < 5 and node_filesystem_readonly{job="node-exporter",fstype!=""} == 0 ) for: 1h labels: severity: warning - alert: NodeFilesystemAlmostOutOfSpace annotations: platform: "测试平台" description: Filesystem on {{ $labels.device }} at {{ $labels.instance }} has only {{ printf "%.2f" $value }}% available space left. summary: "文件系统剩余空间不到3％。" expr: | ( node_filesystem_avail_bytes{job="node-exporter",fstype!=""} / node_filesystem_size_bytes{job="node-exporter",fstype!=""} * 100 < 3 and node_filesystem_readonly{job="node-exporter",fstype!=""} == 0 ) for: 1h labels: severity: critical - alert: NodeFilesystemFilesFillingUp annotations: platform: "测试平台" description: Filesystem on {{ $labels.device }} at {{ $labels.instance }} has only {{ printf "%.2f" $value }}% available inodes left and is filling up. summary: "预计文件系统将在接下来的24小时内用尽inodes。" expr: | ( node_filesystem_files_free{job="node-exporter",fstype!=""} / node_filesystem_files{job="node-exporter",fstype!=""} * 100 < 40 and predict_linear(node_filesystem_files_free{job="node-exporter",fstype!=""}[6h], 24*60*60) < 0 and node_filesystem_readonly{job="node-exporter",fstype!=""} == 0 ) for: 1h labels: severity: warning - alert: NodeFilesystemFilesFillingUp annotations: platform: "测试平台" description: Filesystem on {{ $labels.device }} at {{ $labels.instance }} has only {{ printf "%.2f" $value }}% available inodes left and is filling up fast. summary: "预计文件系统将在接下来的4小时内用尽inodes。" expr: | ( node_filesystem_files_free{job="node-exporter",fstype!=""} / node_filesystem_files{job="node-exporter",fstype!=""} * 100 < 20 and predict_linear(node_filesystem_files_free{job="node-exporter",fstype!=""}[6h], 4*60*60) < 0 and node_filesystem_readonly{job="node-exporter",fstype!=""} == 0 ) for: 1h labels: severity: critical - alert: NodeFilesystemAlmostOutOfFiles annotations: platform: "测试平台" description: Filesystem on {{ $labels.device }} at {{ $labels.instance }} has only {{ printf "%.2f" $value }}% available inodes left. summary: "文件系统仅剩不到5％的inodes。" expr: | ( node_filesystem_files_free{job="node-exporter",fstype!=""} / node_filesystem_files{job="node-exporter",fstype!=""} * 100 < 5 and node_filesystem_readonly{job="node-exporter",fstype!=""} == 0 ) for: 1h labels: severity: warning - alert: NodeFilesystemAlmostOutOfFiles annotations: platform: "测试平台" description: Filesystem on {{ $labels.device }} at {{ $labels.instance }} has only {{ printf "%.2f" $value }}% available inodes left. summary: "文件系统仅剩不到3％的inodes。" expr: | ( node_filesystem_files_free{job="node-exporter",fstype!=""} / node_filesystem_files{job="node-exporter",fstype!=""} * 100 < 3 and node_filesystem_readonly{job="node-exporter",fstype!=""} == 0 ) for: 1h labels: severity: critical - alert: NodeNetworkReceiveErrs annotations: platform: "测试平台" description: '{{ $labels.instance }} interface {{ $labels.device }} has encountered {{ printf "%.0f" $value }} receive errors in the last two minutes.' summary: "网络接口报告许多接收错误。" expr: | increase(node_network_receive_errs_total[2m]) > 10 for: 1h labels: severity: warning - alert: NodeNetworkTransmitErrs annotations: platform: "测试平台" description: '{{ $labels.instance }} interface {{ $labels.device }} has encountered {{ printf "%.0f" $value }} transmit errors in the last two minutes.' summary: "网络接口报告许多传输错误。" expr: | increase(node_network_transmit_errs_total[2m]) > 10 for: 1h labels: severity: warning - name: kubernetes-apps rules: - alert: KubePodCrashLooping annotations: platform: "测试平台" message: Pod {{ $labels.namespace }}/{{ $labels.pod }} ({{ $labels.container }}) is restarting {{ printf "%.2f" $value }} times / 5 minutes. expr: | rate(kube_pod_container_status_restarts_total{job="kube-state-metrics"}[15m]) * 60 * 5 > 0 for: 15m labels: severity: critical - alert: KubePodNotReady annotations: platform: "测试平台" message: "Pod {{$labels.namespace}}/{{$labels.pod}}处于未就绪状态的时间超过15分钟。" expr: | sum by (namespace, pod) (kube_pod_status_phase{job="kube-state-metrics", phase=~"Failed|Pending|Unknown"} * on(namespace, pod) group_left(owner_kind) kube_pod_owner{owner_kind!="Job"}) > 0 for: 15m labels: severity: critical - alert: KubeDeploymentGenerationMismatch annotations: platform: "测试平台" message: "Deployment {{$labels.namespace}}/{{$labels.deployment}}生成不匹配，这表明Deployment已失败但尚未回滚。" expr: | kube_deployment_status_observed_generation{job="kube-state-metrics"} != kube_deployment_metadata_generation{job="kube-state-metrics"} for: 15m labels: severity: critical - alert: KubeDeploymentReplicasMismatch annotations: platform: "测试平台" message: "Deployment{{$labels.namespace}}/{{$labels.deployment}}超过15分钟未匹配预期的副本数。" expr: | kube_deployment_spec_replicas{job="kube-state-metrics"} != kube_deployment_status_replicas_available{job="kube-state-metrics"} for: 15m labels: severity: critical - alert: KubeStatefulSetReplicasMismatch annotations: platform: "测试平台" message: "StatefulSet {{$labels.namespace}}/{{$labels.statefulset}}超过15分钟未匹配预期的副本数。" expr: | kube_statefulset_status_replicas_ready{job="kube-state-metrics"} != kube_statefulset_status_replicas{job="kube-state-metrics"} for: 15m labels: severity: critical - alert: KubeStatefulSetGenerationMismatch annotations: platform: "测试平台" message: "StatefulSet {{$labels.namespace}}/{{$labels.statefulset}}生成不匹配，这表明StatefulSet已失败但尚未回滚。" expr: | kube_statefulset_status_observed_generation{job="kube-state-metrics"} != kube_statefulset_metadata_generation{job="kube-state-metrics"} for: 15m labels: severity: critical - alert: KubeStatefulSetUpdateNotRolledOut annotations: platform: "测试平台" message: StatefulSet {{ $labels.namespace }}/{{ $labels.statefulset }} update has not been rolled out. expr: | max without (revision) ( kube_statefulset_status_current_revision{job="kube-state-metrics"} unless kube_statefulset_status_update_revision{job="kube-state-metrics"} ) * ( kube_statefulset_replicas{job="kube-state-metrics"} != kube_statefulset_status_replicas_updated{job="kube-state-metrics"} ) for: 15m labels: severity: critical - alert: KubeDaemonSetRolloutStuck annotations: platform: "测试平台" message: Only {{ $value | humanizePercentage }} of the desired Pods of DaemonSet {{ $labels.namespace }}/{{ $labels.daemonset }} are scheduled and ready. expr: | kube_daemonset_status_number_ready{job="kube-state-metrics"} / kube_daemonset_status_desired_number_scheduled{job="kube-state-metrics"} < 1.00 for: 15m labels: severity: critical - alert: KubeContainerWaiting annotations: platform: "测试平台" message: Pod {{ $labels.namespace }}/{{ $labels.pod }} container {{ $labels.container}} has been in waiting state for longer than 1 hour. expr: | sum by (namespace, pod, container) (kube_pod_container_status_waiting_reason{job="kube-state-metrics"}) > 0 for: 1h labels: severity: warning - alert: KubeDaemonSetNotScheduled annotations: platform: "测试平台" message: '{{ $value }} Pods of DaemonSet {{ $labels.namespace }}/{{ $labels.daemonset }} are not scheduled.' expr: | kube_daemonset_status_desired_number_scheduled{job="kube-state-metrics"} - kube_daemonset_status_current_number_scheduled{job="kube-state-metrics"} > 0 for: 10m labels: severity: warning - alert: KubeDaemonSetMisScheduled annotations: platform: "测试平台" message: '{{ $value }} Pods of DaemonSet {{ $labels.namespace }}/{{ $labels.daemonset }} are running where they are not supposed to run.' expr: | kube_daemonset_status_number_misscheduled{job="kube-state-metrics"} > 0 for: 10m labels: severity: warning - alert: KubeCronJobRunning annotations: platform: "测试平台" message: CronJob {{ $labels.namespace }}/{{ $labels.cronjob }} is taking more than 1h to complete. expr: | time() - kube_cronjob_next_schedule_time{job="kube-state-metrics"} > 3600 for: 1h labels: severity: warning - alert: KubeJobCompletion annotations: platform: "测试平台" message: Job {{ $labels.namespace }}/{{ $labels.job_name }} is taking more than one hour to complete. expr: | kube_job_spec_completions{job="kube-state-metrics"} - kube_job_status_succeeded{job="kube-state-metrics"} > 0 for: 1h labels: severity: warning - alert: KubeJobFailed annotations: platform: "测试平台" message: Job {{ $labels.namespace }}/{{ $labels.job_name }} failed to complete. expr: | kube_job_failed{job="kube-state-metrics"} > 0 for: 15m labels: severity: warning - alert: KubeHpaReplicasMismatch annotations: platform: "测试平台" message: HPA {{ $labels.namespace }}/{{ $labels.hpa }} has not matched the desired number of replicas for longer than 15 minutes. expr: | (kube_hpa_status_desired_replicas{job="kube-state-metrics"} != kube_hpa_status_current_replicas{job="kube-state-metrics"}) and changes(kube_hpa_status_current_replicas[15m]) == 0 for: 15m labels: severity: warning - alert: KubeHpaMaxedOut annotations: platform: "测试平台" message: HPA {{ $labels.namespace }}/{{ $labels.hpa }} has been running at max replicas for longer than 15 minutes. expr: | kube_hpa_status_current_replicas{job="kube-state-metrics"} == kube_hpa_spec_max_replicas{job="kube-state-metrics"} for: 15m labels: severity: warning - name: kubernetes-resources rules: - alert: KubeCPUOvercommit annotations: platform: "测试平台" message: "群集已超额使用Pod的CPU资源请求，因此无法容忍节点故障。" expr: | sum(namespace:kube_pod_container_resource_requests_cpu_cores:sum) / sum(kube_node_status_allocatable_cpu_cores) > (count(kube_node_status_allocatable_cpu_cores)-1) / count(kube_node_status_allocatable_cpu_cores) for: 5m labels: severity: warning - alert: KubeMemOvercommit annotations: platform: "测试平台" message: "群集已过量使用Pod的内存资源请求，因此无法容忍节点故障。" expr: | sum(namespace:kube_pod_container_resource_requests_memory_bytes:sum) / sum(kube_node_status_allocatable_memory_bytes) > (count(kube_node_status_allocatable_memory_bytes)-1) / count(kube_node_status_allocatable_memory_bytes) for: 5m labels: severity: warning - alert: KubeCPUOvercommit annotations: platform: "测试平台" message: "群集已超额使用了对命名空间的CPU资源请求。" expr: | sum(kube_resourcequota{job="kube-state-metrics", type="hard", resource="cpu"}) / sum(kube_node_status_allocatable_cpu_cores) > 1.5 for: 5m labels: severity: warning - alert: KubeMemOvercommit annotations: platform: "测试平台" message: "群集已过量使用了对命名空间的内存资源请求。" expr: | sum(kube_resourcequota{job="kube-state-metrics", type="hard", resource="memory"}) / sum(kube_node_status_allocatable_memory_bytes{job="node-exporter"}) > 1.5 for: 5m labels: severity: warning - alert: KubeQuotaExceeded annotations: platform: "测试平台" message: Namespace {{ $labels.namespace }} is using {{ $value | humanizePercentage }} of its {{ $labels.resource }} quota. expr: | kube_resourcequota{job="kube-state-metrics", type="used"} / ignoring(instance, job, type) (kube_resourcequota{job="kube-state-metrics", type="hard"} > 0) > 0.90 for: 15m labels: severity: warning # - alert: CPUThrottlingHigh # annotations: # message: '{{ $value | humanizePercentage }} throttling of CPU in namespace # {{ $labels.namespace }} for container {{ $labels.container }} in pod {{ # $labels.pod }}.' # expr: | # sum(increase(container_cpu_cfs_throttled_periods_total{container!="", }[5m])) by (container, pod, namespace) # / # sum(increase(container_cpu_cfs_periods_total{}[5m])) by (container, pod, namespace) # > ( 25 / 100 ) # for: 15m # labels: # severity: warning - name: kubernetes-storage rules: - alert: KubePersistentVolumeUsageCritical annotations: platform: "测试平台" message: The PersistentVolume claimed by {{ $labels.persistentvolumeclaim }} in Namespace {{ $labels.namespace }} is only {{ $value | humanizePercentage }} free. expr: | kubelet_volume_stats_available_bytes{job="kubelet"} / kubelet_volume_stats_capacity_bytes{job="kubelet"} < 0.03 for: 1m labels: severity: critical - alert: KubePersistentVolumeFullInFourDays annotations: platform: "测试平台" message: "根据最近的抽样，{{$labels.persistentvolumeclaim}}在命名空间{{$labels.namespace}}中声明的PersistentVolume预计将在四天内填满，目前{{$value | humanizePercentage}}可用。" expr: | ( kubelet_volume_stats_available_bytes{job="kubelet"} / kubelet_volume_stats_capacity_bytes{job="kubelet"} ) < 0.15 and predict_linear(kubelet_volume_stats_available_bytes{job="kubelet"}[6h], 4 * 24 * 3600) < 0 for: 1h labels: severity: critical - alert: KubePersistentVolumeErrors annotations: platform: "测试平台" message: The persistent volume {{ $labels.persistentvolume }} has status {{ $labels.phase }}. expr: | kube_persistentvolume_status_phase{phase=~"Failed|Pending",job="kube-state-metrics"} > 0 for: 5m labels: severity: critical - name: kubernetes-system rules: - alert: KubeVersionMismatch annotations: platform: "测试平台" message: There are {{ $value }} different semantic versions of Kubernetes components running. expr: | count(count by (gitVersion) (label_replace(kubernetes_build_info{job!~"kube-dns|coredns"},"gitVersion","$1","gitVersion","(v[0-9]*.[0-9]*.[0-9]*).*"))) > 1 for: 15m labels: severity: warning - alert: KubeClientErrors annotations: platform: "测试平台" message: Kubernetes API server client '{{ $labels.job }}/{{ $labels.instance }}' is experiencing {{ $value | humanizePercentage }} errors.' expr: | (sum(rate(rest_client_requests_total{code=~"5.."}[5m])) by (instance, job) / sum(rate(rest_client_requests_total[5m])) by (instance, job)) > 0.01 for: 15m labels: severity: warning - name: kubernetes-system-apiserver rules: - alert: KubeAPILatencyHigh annotations: platform: "测试平台" message: The API server has a 99th percentile latency of {{ $value }} seconds for {{ $labels.verb }} {{ $labels.resource }}. expr: | cluster_quantile:apiserver_request_duration_seconds:histogram_quantile{job="apiserver",quantile="0.99",subresource!="log",verb!~"LIST|WATCH|WATCHLIST|PROXY|CONNECT"} > 1 for: 10m labels: severity: warning - alert: KubeAPILatencyHigh annotations: platform: "测试平台" message: The API server has a 99th percentile latency of {{ $value }} seconds for {{ $labels.verb }} {{ $labels.resource }}. expr: | cluster_quantile:apiserver_request_duration_seconds:histogram_quantile{job="apiserver",quantile="0.99",subresource!="log",verb!~"LIST|WATCH|WATCHLIST|PROXY|CONNECT"} > 4 for: 10m labels: severity: critical - alert: KubeAPIErrorsHigh annotations: platform: "测试平台" message: API server is returning errors for {{ $value | humanizePercentage }} of requests. expr: | sum(rate(apiserver_request_total{job="apiserver",code=~"5.."}[5m])) / sum(rate(apiserver_request_total{job="apiserver"}[5m])) > 0.03 for: 10m labels: severity: critical - alert: KubeAPIErrorsHigh annotations: platform: "测试平台" message: API server is returning errors for {{ $value | humanizePercentage }} of requests. expr: | sum(rate(apiserver_request_total{job="apiserver",code=~"5.."}[5m])) / sum(rate(apiserver_request_total{job="apiserver"}[5m])) > 0.01 for: 10m labels: severity: warning - alert: KubeAPIErrorsHigh annotations: platform: "测试平台" message: API server is returning errors for {{ $value | humanizePercentage }} of requests for {{ $labels.verb }} {{ $labels.resource }} {{ $labels.subresource }}. expr: | sum(rate(apiserver_request_total{job="apiserver",code=~"5.."}[5m])) by (resource,subresource,verb) / sum(rate(apiserver_request_total{job="apiserver"}[5m])) by (resource,subresource,verb) > 0.10 for: 10m labels: severity: critical - alert: KubeAPIErrorsHigh annotations: platform: "测试平台" message: API server is returning errors for {{ $value | humanizePercentage }} of requests for {{ $labels.verb }} {{ $labels.resource }} {{ $labels.subresource }}. expr: | sum(rate(apiserver_request_total{job="apiserver",code=~"5.."}[5m])) by (resource,subresource,verb) / sum(rate(apiserver_request_total{job="apiserver"}[5m])) by (resource,subresource,verb) > 0.05 for: 10m labels: severity: warning - alert: KubeClientCertificateExpiration annotations: platform: "测试平台" message: "用于验证apiserver的客户端证书的有效期限少于7.0天。" expr: | apiserver_client_certificate_expiration_seconds_count{job="apiserver"} > 0 and histogram_quantile(0.01, sum by (job, le) (rate(apiserver_client_certificate_expiration_seconds_bucket{job="apiserver"}[5m]))) < 604800 labels: severity: warning - alert: KubeClientCertificateExpiration annotations: platform: "测试平台" message: "用于验证apiserver的客户端证书的有效期限少于24.0小时。" expr: | apiserver_client_certificate_expiration_seconds_count{job="apiserver"} > 0 and histogram_quantile(0.01, sum by (job, le) (rate(apiserver_client_certificate_expiration_seconds_bucket{job="apiserver"}[5m]))) < 86400 labels: severity: critical - alert: KubeAPIDown annotations: platform: "测试平台" message: "KubeAPI已从Prometheus目标发现中消失。" expr: | absent(up{job="apiserver"} == 1) for: 15m labels: severity: critical - name: kubernetes-system-kubelet rules: - alert: KubeNodeNotReady annotations: platform: "测试平台" message: "{{$labels.node}}尚未准备就绪超过15分钟。" expr: | kube_node_status_condition{job="kube-state-metrics",condition="Ready",status="true"} == 0 for: 15m labels: severity: warning - alert: KubeNodeUnreachable annotations: platform: "测试平台" message: "{{$labels.node}}无法访问，某些工作负荷可能会重新安排。" expr: | kube_node_spec_taint{job="kube-state-metrics",key="node.kubernetes.io/unreachable",effect="NoSchedule"} == 1 labels: severity: warning - alert: KubeletTooManyPods annotations: platform: "测试平台" message: Kubelet '{{ $labels.node }}' is running at {{ $value | humanizePercentage }} of its Pod capacity. expr: | max(max(kubelet_running_pod_count{job="kubelet"}) by(instance) * on(instance) group_left(node) kubelet_node_name{job="kubelet"}) by(node) / max(kube_node_status_capacity_pods{job="kube-state-metrics"}) by(node) > 0.95 for: 15m labels: severity: warning - alert: KubeletDown annotations: platform: "测试平台" message: "Kubelet已从Prometheus目标发现中消失。" expr: | absent(up{job="kubelet"} == 1) for: 15m labels: severity: critical # - name: kubernetes-system-scheduler # rules: # - alert: KubeSchedulerDown # annotations: # message: KubeScheduler has disappeared from Prometheus target discovery. # runbook_url: https://github.com/kubernetes-monitoring/kubernetes-mixin/tree/master/runbook.md#alert-name-kubeschedulerdown # expr: | # absent(up{job="kube-scheduler"} == 1) # for: 15m # labels: # severity: critical # - name: kubernetes-system-controller-manager # rules: # - alert: KubeControllerManagerDown # annotations: # message: KubeControllerManager has disappeared from Prometheus target discovery. # runbook_url: https://github.com/kubernetes-monitoring/kubernetes-mixin/tree/master/runbook.md#alert-name-kubecontrollermanagerdown # expr: | # absent(up{job="kube-controller-manager"} == 1) # for: 15m # labels: # severity: critical - name: prometheus rules: - alert: PrometheusBadConfig annotations: platform: "测试平台" description: Prometheus {{$labels.namespace}}/{{$labels.pod}} has failed to reload its configuration. summary: "Prometheus配置重新加载失败。" expr: | # Without max_over_time, failed scrapes could create false negatives, see # https://www.robustperception.io/alerting-on-gauges-in-prometheus-2-0 for details. max_over_time(prometheus_config_last_reload_successful{job="prometheus-k8s",namespace="monitoring"}[5m]) == 0 for: 10m labels: severity: critical - alert: PrometheusNotificationQueueRunningFull annotations: platform: "测试平台" description: Alert notification queue of Prometheus {{$labels.namespace}}/{{$labels.pod}} is running full. summary: "Prometheus警报通知队列预计将在30m以内用完。" expr: | # Without min_over_time, failed scrapes could create false negatives, see # https://www.robustperception.io/alerting-on-gauges-in-prometheus-2-0 for details. ( predict_linear(prometheus_notifications_queue_length{job="prometheus-k8s",namespace="monitoring"}[5m], 60 * 30) > min_over_time(prometheus_notifications_queue_capacity{job="prometheus-k8s",namespace="monitoring"}[5m]) ) for: 15m labels: severity: warning - alert: PrometheusErrorSendingAlertsToSomeAlertmanagers annotations: platform: "测试平台" description: '{{ printf "%.1f" $value }}% errors while sending alerts from Prometheus {{$labels.namespace}}/{{$labels.pod}} to Alertmanager {{$labels.alertmanager}}.' summary: "Prometheus在将警报发送到特定的Alertmanager时遇到了超过1％的错误。" expr: | ( rate(prometheus_notifications_errors_total{job="prometheus-k8s",namespace="monitoring"}[5m]) / rate(prometheus_notifications_sent_total{job="prometheus-k8s",namespace="monitoring"}[5m]) ) * 100 > 1 for: 15m labels: severity: warning - alert: PrometheusErrorSendingAlertsToAnyAlertmanager annotations: platform: "测试平台" description: '{{ printf "%.1f" $value }}% minimum errors while sending alerts from Prometheus {{$labels.namespace}}/{{$labels.pod}} to any Alertmanager.' summary: "Prometheus在将警报发送到任何Alertmanager时遇到3％以上的错误。" expr: | min without(alertmanager) ( rate(prometheus_notifications_errors_total{job="prometheus-k8s",namespace="monitoring"}[5m]) / rate(prometheus_notifications_sent_total{job="prometheus-k8s",namespace="monitoring"}[5m]) ) * 100 > 3 for: 15m labels: severity: critical - alert: PrometheusNotConnectedToAlertmanagers annotations: platform: "测试平台" description: Prometheus {{$labels.namespace}}/{{$labels.pod}} is not connected to any Alertmanagers. summary: "Prometheus未与任何Alertmanager连接。" expr: | # Without max_over_time, failed scrapes could create false negatives, see # https://www.robustperception.io/alerting-on-gauges-in-prometheus-2-0 for details. max_over_time(prometheus_notifications_alertmanagers_discovered{job="prometheus-k8s",namespace="monitoring"}[5m]) < 1 for: 10m labels: severity: warning - alert: PrometheusTSDBReloadsFailing annotations: platform: "测试平台" description: Prometheus {{$labels.namespace}}/{{$labels.pod}} has detected {{$value | humanize}} reload failures over the last 3h. summary: "Prometheus从磁盘重新加载块时遇到问题。" expr: | increase(prometheus_tsdb_reloads_failures_total{job="prometheus-k8s",namespace="monitoring"}[3h]) > 0 for: 4h labels: severity: warning - alert: PrometheusTSDBCompactionsFailing annotations: platform: "测试平台" description: Prometheus {{$labels.namespace}}/{{$labels.pod}} has detected {{$value | humanize}} compaction failures over the last 3h. summary: "Prometheus在压缩块时遇到问题。" expr: | increase(prometheus_tsdb_compactions_failed_total{job="prometheus-k8s",namespace="monitoring"}[3h]) > 0 for: 4h labels: severity: warning - alert: PrometheusNotIngestingSamples annotations: platform: "测试平台" description: Prometheus {{$labels.namespace}}/{{$labels.pod}} is not ingesting samples. summary: "Prometheus没有获取到样本" expr: | rate(prometheus_tsdb_head_samples_appended_total{job="prometheus-k8s",namespace="monitoring"}[5m]) <= 0 for: 10m labels: severity: warning - alert: PrometheusDuplicateTimestamps annotations: platform: "测试平台" description: Prometheus {{$labels.namespace}}/{{$labels.pod}} is dropping {{ printf "%.4g" $value }} samples/s with different values but duplicated timestamp. summary: "Prometheus正在删除带有重复时间戳的样本。" expr: | rate(prometheus_target_scrapes_sample_duplicate_timestamp_total{job="prometheus-k8s",namespace="monitoring"}[5m]) > 0 for: 10m labels: severity: warning - alert: PrometheusOutOfOrderTimestamps annotations: platform: "测试平台" description: Prometheus {{$labels.namespace}}/{{$labels.pod}} is dropping {{ printf "%.4g" $value }} samples/s with timestamps arriving out of order. summary: "Prometheus丢弃带有乱序时间戳的样本。" expr: | rate(prometheus_target_scrapes_sample_out_of_order_total{job="prometheus-k8s",namespace="monitoring"}[5m]) > 0 for: 10m labels: severity: warning - alert: PrometheusRemoteStorageFailures annotations: platform: "测试平台" description: Prometheus {{$labels.namespace}}/{{$labels.pod}} failed to send {{ printf "%.1f" $value }}% of the samples to queue {{$labels.queue}}. summary: "Prometheus无法将样本发送到远程存储。" expr: | ( rate(prometheus_remote_storage_failed_samples_total{job="prometheus-k8s",namespace="monitoring"}[5m]) / ( rate(prometheus_remote_storage_failed_samples_total{job="prometheus-k8s",namespace="monitoring"}[5m]) + rate(prometheus_remote_storage_succeeded_samples_total{job="prometheus-k8s",namespace="monitoring"}[5m]) ) ) * 100 > 1 for: 15m labels: severity: critical - alert: PrometheusRemoteWriteBehind annotations: platform: "测试平台" description: Prometheus {{$labels.namespace}}/{{$labels.pod}} remote write is {{ printf "%.1f" $value }}s behind for queue {{$labels.queue}}. summary: "Prometheus远程写入落后了。" expr: | # Without max_over_time, failed scrapes could create false negatives, see # https://www.robustperception.io/alerting-on-gauges-in-prometheus-2-0 for details. ( max_over_time(prometheus_remote_storage_highest_timestamp_in_seconds{job="prometheus-k8s",namespace="monitoring"}[5m]) - on(job, instance) group_right max_over_time(prometheus_remote_storage_queue_highest_sent_timestamp_seconds{job="prometheus-k8s",namespace="monitoring"}[5m]) ) > 120 for: 15m labels: severity: critical - alert: PrometheusRemoteWriteDesiredShards annotations: platform: "测试平台" description: Prometheus {{$labels.namespace}}/{{$labels.pod}} remote write desired shards calculation wants to run {{ $value }} shards, which is more than the max of {{ printf `prometheus_remote_storage_shards_max{instance="%s",job="prometheus-k8s",namespace="monitoring"}` $labels.instance | query | first | value }}. summary: "Prometheus远程写入所需的分片计算要比配置的最大分片运行更多。" expr: | # Without max_over_time, failed scrapes could create false negatives, see # https://www.robustperception.io/alerting-on-gauges-in-prometheus-2-0 for details. ( max_over_time(prometheus_remote_storage_shards_desired{job="prometheus-k8s",namespace="monitoring"}[5m]) > max_over_time(prometheus_remote_storage_shards_max{job="prometheus-k8s",namespace="monitoring"}[5m]) ) for: 15m labels: severity: warning - alert: PrometheusRuleFailures annotations: platform: "测试平台" description: Prometheus {{$labels.namespace}}/{{$labels.pod}} has failed to evaluate {{ printf "%.0f" $value }} rules in the last 5m. summary: "Prometheus无法通过规则评估。" expr: | increase(prometheus_rule_evaluation_failures_total{job="prometheus-k8s",namespace="monitoring"}[5m]) > 0 for: 15m labels: severity: critical - alert: PrometheusMissingRuleEvaluations annotations: platform: "测试平台" description: Prometheus {{$labels.namespace}}/{{$labels.pod}} has missed {{ printf "%.0f" $value }} rule group evaluations in the last 5m. summary: "Prometheus由于规则组评估速度慢而缺少规则评估。" expr: | increase(prometheus_rule_group_iterations_missed_total{job="prometheus-k8s",namespace="monitoring"}[5m]) > 0 for: 15m labels: severity: warning - name: alertmanager.rules rules: - alert: AlertmanagerConfigInconsistent annotations: platform: "测试平台" message: "Alertmanager {{$labels.service}}实例的配置不同步。" expr: | count_values("config_hash", alertmanager_config_hash{job="alertmanager-main",namespace="monitoring"}) BY (service) / ON(service) GROUP_LEFT() label_replace(max(prometheus_operator_spec_replicas{job="prometheus-operator",namespace="monitoring",controller="alertmanager"}) by (name, job, namespace, controller), "service", "alertmanager-$1", "name", "(.*)") != 1 for: 5m labels: severity: critical - alert: AlertmanagerFailedReload annotations: platform: "测试平台" message: "Alertmanager {{$labels.namespace}}/{{$labels.pod}}重新加载配置失败。" expr: | alertmanager_config_last_reload_successful{job="alertmanager-main",namespace="monitoring"} == 0 for: 10m labels: severity: warning - alert: AlertmanagerMembersInconsistent annotations: platform: "测试平台" message: "Alertmanager尚未找到集群的所有其他成员。" expr: | alertmanager_cluster_members{job="alertmanager-main",namespace="monitoring"} != on (service) GROUP_LEFT() count by (service) (alertmanager_cluster_members{job="alertmanager-main",namespace="monitoring"}) for: 5m labels: severity: critical # - name: general.rules # rules: # - alert: TargetDown # annotations: # platform: "测试平台" # message: '{{ printf "%.4g" $value }}% of the {{ $labels.job }} targets in # {{ $labels.namespace }} namespace are down.' # expr: 100 * (count(up == 0) BY (job, namespace, service) / count(up) BY (job, # namespace, service)) > 10 # for: 10m # labels: # severity: warning # - alert: Watchdog # annotations: # platform: "测试平台" # message: "此警报始终处于触发状态，旨在确保整个警报管道均正常运行。" # runbook_url: https://github.com/kubernetes-monitoring/kubernetes-mixin/tree/master/runbook.md # expr: vector(1) # labels: # severity: none - name: node-time rules: - alert: ClockSkewDetected annotations: platform: "测试平台" message: Clock skew detected on node-exporter {{ $labels.namespace }}/{{ $labels.pod }}. Ensure NTP is configured correctly on this host. expr: | abs(node_timex_offset_seconds{job="node-exporter"}) > 0.05 for: 2m labels: severity: warning - name: node-network rules: - alert: NodeNetworkInterfaceFlapping annotations: platform: "测试平台" message: Network interface "{{ $labels.device }}" changing it's up status often on node-exporter {{ $labels.namespace }}/{{ $labels.pod }}" expr: | changes(node_network_up{job="node-exporter",device!~"veth.+"}[2m]) > 2 for: 2m labels: severity: warning - name: prometheus-operator rules: - alert: PrometheusOperatorReconcileErrors annotations: platform: "测试平台" message: Errors while reconciling {{ $labels.controller }} in {{ $labels.namespace }} Namespace. expr: | rate(prometheus_operator_reconcile_errors_total{job="prometheus-operator",namespace="monitoring"}[5m]) > 0.1 for: 10m labels: severity: warning - alert: PrometheusOperatorNodeLookupErrors annotations: platform: "测试平台" message: Errors while reconciling Prometheus in {{ $labels.namespace }} Namespace. expr: | rate(prometheus_operator_node_address_lookup_errors_total{job="prometheus-operator",namespace="monitoring"}[5m]) > 0.1 for: 10m labels: severity: warning
接下来参考prometheus-rules.yaml，新建自定义的告警项prometheus-additional-rules.yaml
kind: PrometheusRule metadata: labels: prometheus: k8s role: alert-rules name: prometheus-additional-rules namespace: monitoring spec: groups: - name: general.rules rules: - alert: InstanceDown expr: up == 0 for: 30s labels: severity: critical annotations: platform: "育苗通测试平台" summary: "监控采集器 {{ $labels.instance }} 停止工作!!!" value: "{{ $value }}" - name: node.rules rules: - alert: NodeFilesystemUsage expr: 100 - (node_filesystem_free_bytes{device="rootfs"} / node_filesystem_size_bytes{device="rootfs"} * 100) > 85 for: 5m labels: severity: warning annotations: platform: "育苗通测试平台" summary: "主机 {{ $labels.instance }} : {{ $labels.mountpoint }} 分区使用率超过80%!!!" value: "{{ $value }}" - alert: NodeMemoryUsage expr: 100 - (node_memory_MemFree_bytes+node_memory_Cached_bytes+node_memory_Buffers_bytes) / node_memory_MemTotal_bytes * 100 > 80 for: 5m labels: severity: warning annotations: platform: "育苗通测试平台" summary: "主机 {{ $labels.instance }} 内存使用率超过80%!!!" value: "{{ $value }}" - alert: NodeCPUUsage expr: 100 - (avg(irate(node_cpu_seconds_total{mode="idle"}[5m])) by (instance) * 100) > 80 for: 5m labels: severity: warning annotations: platform: "育苗通测试平台" summary: "主机 {{ $labels.instance }} CPU使用率超过80%!!!" value: "{{ $value }}"
五、添加k8s外部监控
一个项目开始可能很难实现全部容器化，比如数据库、CDH集群。但是我们依然需要监控他们，如果分成两套prometheus不利于管理，所以我们统一添加这些监控到kube-prometheus中。
那么接下来我们新建prometheus-additional.yaml文件，添加额外监控组件配置scrape_configs。
- job_name: 'node_export_others' static_configs: - targets: - *.*.*.118:9591 - *.*.*.137:9591 - *.*.*.138:9591 - *.*.*.139:9591 - *.*.*.153:9591 - *.*.*.154:9591 - *.*.*.156:9591 - *.*.*.159:9591 - *.*.*.166:9591 - *.*.*.167:9591 - *.*.*.168:9591 - *.*.*.169:9591 - *.*.*.175:9591 - *.*.*.177:9591 - *.*.*.179:9591 - *.*.*.180:9591 - *.*.*.181:9591 - job_name: 'nginx' static_configs: - targets: - *.*.*.159:9593 - job_name: 'mysql' static_configs: - targets: - *.*.*.156:9592 - job_name: 'pushgateway-flink' static_configs: - targets: - *.*.*.137:9091 - job_name: 'kafka_jmx_export' static_configs: - targets: - *.*.*.118:9991 - *.*.*.138:9991 - *.*.*.139:9991 - job_name: 'zookeeper_cdh_export' static_configs: - targets: - *.*.*.118:9595 - *.*.*.138:9595 - *.*.*.139:9595 - job_name: 'hdfs_namenode_cdh' static_configs: - targets: - *.*.*.137:9600 - *.*.*.139:9600 - job_name: 'hdfs_datanode_cdh' static_configs: - targets: - *.*.*.118:9601 - *.*.*.138:9601 - *.*.*.139:9601 - job_name: 'yarn_resourcemanager_cdh' static_configs: - targets: - *.*.*.137:9602 - *.*.*.139:9602 - job_name: 'yarn_nodemanager_cdh' static_configs: - targets: - *.*.*.118:9603 - *.*.*.138:9603 - *.*.*.139:9603 - job_name: 'redis_exporter' static_configs: - targets: - *.*.*.166:9594 - job_name: 'elasticsearch' metrics_path: "/_prometheus/metrics" static_configs: - targets: - *.*.*.169:8970 - *.*.*.175:8970 - *.*.*.177:8970 - job_name: 'nacos' metrics_path: '/nacos/actuator/prometheus' static_configs: - targets: - *.*.*.166:8848 - *.*.*.167:8848 - *.*.*.168:8848 - job_name: 'redis_exporter_targets' static_configs: - targets: - redis://*.*.*.179:6179 - redis://*.*.*.180:6179 - redis://*.*.*.181:6179 - redis://*.*.*.179:6178 - redis://*.*.*.180:6178 - redis://*.*.*.181:6178 - redis://*.*.*.179:6177 - redis://*.*.*.179:6176 metrics_path: /scrape relabel_configs: - source_labels: [__address__] target_label: __param_target - source_labels: [__param_target] target_label: instance - target_label: __address__ replacement: *.*.*.166:9594
然后我们需要将这些监控配置以secret资源类型存储到k8s集群中。
kubectl create secret generic additional-scrape-configs --from-file=prometheus-additional.yaml -n monitoring
六、配置Alertmanager
监控和告警项已经配置好了，那么接下来我们将进行alertmanager告警配置了。
常用的接收方式就是邮件了，但这里我们将使用企业微信号进行接收，所以开发一个连接微信的应用appalertservice，进行消息转发和处理。
当然，你也可以直接配置微信号和消息模板，可参考：第3章 Prometheus告警处理。
global: resolve_timeout: 5m # smtp_smarthost: 'smtp.sina.com:25' # smtp_from: '******@sina.com' # smtp_auth_username: '******@sina.com' # smtp_auth_password: '******' route: group_by: ['job'] group_wait: 20s group_interval: 30m repeat_interval: 12h receiver: webhook receivers: - name: webhook webhook_configs: - url: 'http://appalertservice:20119/' # - name: 'email' # email_configs: # - to: '******@163.com'
然后我们需要将alertmanager配置以secret资源类型存储到k8s集群中。
kubectl create secret generic alertmanager-main --from-file=alertmanager.yaml -n monitoring
七、配置Grafana
前面我们把监控和告警已经配置好了，那接下来就剩展示了。打开grafana -> 点击添加按钮 ->Import ->Upload .json file，导入监控仪表板。
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It can be deployed with PSPs enabled using the following helm chart - https://github.com/pivotal-cf/charts-grafana", "editable": true, "gnetId": 10000, "graphTooltip": 0, "id": 102, "iteration": 1597137794957, "links": [], "panels": [ { "collapsed": false, "datasource": null, "gridPos": { "h": 1, "w": 24, "x": 0, "y": 0 }, "id": 34, "panels": [], "repeat": null, "title": "Summary", "type": "row" }, { "cacheTimeout": null, "colorBackground": false, "colorValue": true, "colors": [ "rgba(50, 172, 45, 0.97)", "rgba(237, 129, 40, 0.89)", "rgba(245, 54, 54, 0.9)" ], "datasource": "prometheus", "editable": true, "error": false, "format": "percent", "gauge": { "maxValue": 100, "minValue": 0, "show": true, "thresholdLabels": false, "thresholdMarkers": true }, "gridPos": { "h": 5, "w": 8, "x": 0, "y": 1 }, "height": "180px", "id": 4, "interval": null, "links": [], "mappingType": 1, "mappingTypes": [ { "name": "value to text", "value": 1 }, { "name": "range to text", "value": 2 } ], 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