prometheus

https://prometheus.io/

为云监控而生

From metrics to insight

Power your metrics and alerting with the leading
open-source monitoring solution.

Prometheus is a Cloud Native Computing Foundation graduated project.

从openstack产生的虚拟机，到k8s产生的虚拟POD，都可以支持监控。

openstack exporter

https://blog.zhaw.ch/icclab/monitoring-an-openstack-deployment-with-prometheus-and-grafana/

Here is the list of the 18 metrics currently collected by Prometheus Openstack exporter:
neutron_public_ip_usage    hypervisor_memory_mbs_total
neutron_net_size    hypervisor_running_vms
hypervisor_memory_mbs_used    hypervisor_disk_gbs_total
hypervisor_vcpus_total    hypervisor_disk_gbs_used
openstack_allocation_ratio    hypervisor_vcpus_used
nova_instances    nova_resources_ram_mbs
nova_resources_disk_gbs    swift_replication_duration_seconds
openstack_exporter_cache_age_seconds    swift_disk_usage_bytes
swift_replication_stats    swift_quarantined_objects

Alternatively you could use Prometheus’s Node exporter for more detailed metrics on node usage – this needs to be installed in the controller/compute nodes and the prometheus.yml configuration file also needs to be changed. A docker container is also available at Docker Hub.

Although Prometheus provides some rudimentary graph support, combining it with a more powerful graphing solution makes it much easier to see what’s going on in your system. For this reason, we set up Grafana.

监控POD

https://276622709.github.io/2021/04/16/%E4%BD%BF%E7%94%A8helm%E5%AE%89%E8%A3%85prometheus%E5%AE%9E%E8%B7%B5/

实验目的

完善k8s实验环境，通过helm方便快速的搭建prometheus项目监控k8s实验环境，了解prometheus的工作原理

前提条件

已完成kubernetes的环境搭建和helm的客户端安装

项目地址

https://github.com/prometheus-operator/kube-prometheus

项目包含的组件有以下几个

    The Prometheus Operator
    Highly available Prometheus
    Highly available Alertmanager
    Prometheus node-exporter
    Prometheus Adapter for Kubernetes Metrics APIs
    kube-state-metrics
    Grafana

https://github.com/prometheus-operator/kube-prometheus

This repository collects Kubernetes manifests, Grafana dashboards, and Prometheus rules combined with documentation and scripts to provide easy to operate end-to-end Kubernetes cluster monitoring with Prometheus using the Prometheus Operator.

The content of this project is written in jsonnet. This project could both be described as a package as well as a library.

Components included in this package:

    The Prometheus Operator
    Highly available Prometheus
    Highly available Alertmanager
    Prometheus node-exporter
    Prometheus Adapter for Kubernetes Metrics APIs
    kube-state-metrics
    Grafana

This stack is meant for cluster monitoring, so it is pre-configured to collect metrics from all Kubernetes components. In addition to that it delivers a default set of dashboards and alerting rules. Many of the useful dashboards and alerts come from the kubernetes-mixin project, similar to this project it provides composable jsonnet as a library for users to customize to their needs.