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00. 사전조건

Prerequisites

  • Kubernetes 1.16+
  • Helm 3+
  1. Kubernetes Cluster 구성
  2. kubectl 설치
  3. Kubernetes Config
  4. helm 설치

01. 개요

Kubernetes-operator

Summary

  • kube-prometheus-stack 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.
  • Installs the kube-prometheus stack, a collection of 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.

Dependencies

By default this chart installs additional, dependent charts:

Guide for kube-prometheus-stack with Helm3.x

02. Namespace 생성

sansae@win10pro-worksp:$ kubectl create ns monitor-po

03. Install Chart of kube-prometheus-stack

sansae@win10pro-worksp:$ helm repo add prometheus-community https://prometheus-community.github.io/helm-charts
"prometheus-community" already exists with the same configuration, skipping
sansae@win10pro-worksp:$
sansae@win10pro-worksp:$ helm repo update
Hang tight while we grab the latest from your chart repositories...
...Successfully got an update from the "ingress-nginx" chart repository
...Successfully got an update from the "elastic" chart repository
...Successfully got an update from the "dynatrace" chart repository
...Successfully got an update from the "prometheus-community" chart repository
Update Complete. ⎈Happy Helming!⎈
sansae@win10pro-worksp:$ helm install kube-prometheus-stack prometheus-community/kube-prometheus-stack -n monitor-po
NAME: kube-prometheus-stack
LAST DEPLOYED: Wed Mar 31 10:30:38 2021
NAMESPACE: monitor-po
STATUS: deployed
REVISION: 1
NOTES:
kube-prometheus-stack has been installed. Check its status by running:
  kubectl --namespace monitor-po get pods -l "release=kube-prometheus-stack"

Visit https://github.com/prometheus-operator/kube-prometheus for instructions on how to create & configure Alertmanager and Prometheus instances using the Operator.
sansae@win10pro-worksp:$ kubectl get all -n monitor-po
NAME                                                            READY   STATUS    RESTARTS   AGE
pod/alertmanager-kube-prometheus-stack-alertmanager-0           2/2     Running   0          91s
pod/kube-prometheus-stack-grafana-6b5c8fd86c-lwcv2              2/2     Running   0          93s
pod/kube-prometheus-stack-kube-state-metrics-7877f4cc7c-b2nnc   1/1     Running   0          93s
pod/kube-prometheus-stack-operator-5859b9c949-4n24x             1/1     Running   0          93s
pod/kube-prometheus-stack-prometheus-node-exporter-5f4pm        1/1     Running   0          93s
pod/kube-prometheus-stack-prometheus-node-exporter-5fbc7        1/1     Running   0          93s
pod/kube-prometheus-stack-prometheus-node-exporter-ggj8c        1/1     Running   0          93s
pod/kube-prometheus-stack-prometheus-node-exporter-h5cfj        1/1     Running   0          93s
pod/kube-prometheus-stack-prometheus-node-exporter-hvpsf        1/1     Running   0          93s
pod/kube-prometheus-stack-prometheus-node-exporter-mbt54        1/1     Running   0          93s
pod/kube-prometheus-stack-prometheus-node-exporter-s5zd9        1/1     Running   0          93s
pod/kube-prometheus-stack-prometheus-node-exporter-v7bsj        1/1     Running   0          93s
pod/kube-prometheus-stack-prometheus-node-exporter-v7sts        1/1     Running   0          93s
pod/kube-prometheus-stack-prometheus-node-exporter-vnmx5        1/1     Running   0          93s
pod/prometheus-kube-prometheus-stack-prometheus-0               2/2     Running   1          91s

NAME                                                     TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)
       AGE
service/alertmanager-operated                            ClusterIP   None           <none>        9093/TCP,9094/TCP,9094/UDP   91s
service/kube-prometheus-stack-alertmanager               ClusterIP   10.0.92.245    <none>        9093/TCP
       93s
service/kube-prometheus-stack-grafana                    ClusterIP   10.0.240.51    <none>        80/TCP
       93s
service/kube-prometheus-stack-kube-state-metrics         ClusterIP   10.0.47.252    <none>        8080/TCP
       93s
service/kube-prometheus-stack-operator                   ClusterIP   10.0.215.243   <none>        443/TCP
       93s
service/kube-prometheus-stack-prometheus                 ClusterIP   10.0.152.193   <none>        9090/TCP
       93s
service/kube-prometheus-stack-prometheus-node-exporter   ClusterIP   10.0.216.169   <none>        9100/TCP
       93s
service/prometheus-operated                              ClusterIP   None           <none>        9090/TCP
       91s

NAME                                                            DESIRED   CURRENT   READY   UP-TO-DATE   AVAILABLE   NODE SELECTOR   AGE
daemonset.apps/kube-prometheus-stack-prometheus-node-exporter   10        10        10      10           10          <none>          93s

NAME                                                       READY   UP-TO-DATE   AVAILABLE   AGE
deployment.apps/kube-prometheus-stack-grafana              1/1     1            1           93s
deployment.apps/kube-prometheus-stack-kube-state-metrics   1/1     1            1           93s
deployment.apps/kube-prometheus-stack-operator             1/1     1            1           93s

NAME                                                                  DESIRED   CURRENT   READY   AGE
replicaset.apps/kube-prometheus-stack-grafana-6b5c8fd86c              1         1         1       93s
replicaset.apps/kube-prometheus-stack-kube-state-metrics-7877f4cc7c   1         1         1       93s
replicaset.apps/kube-prometheus-stack-operator-5859b9c949             1         1         1       93s

NAME                                                               READY   AGE
statefulset.apps/alertmanager-kube-prometheus-stack-alertmanager   1/1     91s
statefulset.apps/prometheus-kube-prometheus-stack-prometheus       1/1     91s
sansae@win10pro-worksp:$

04. Volume 설정

04-01. Prometheus Volume

sansae@win10pro-worksp:/workspaces$ kubectl edit prometheus kube-prometheus-stack-prometheus -n monitor-po

=============================================================
156   storage:
157     volumeClaimTemplate:
158       spec:
159         accessModes:
160         - ReadWriteOnce
161         resources:
162           requests:
163             storage: 50Gi
164         storageClassName: managed-premium
=============================================================

prometheus.monitoring.coreos.com/kube-prometheus-stack-prometheus edited

04-02. Alertmanager Volume

sansae@win10pro-worksp:/workspaces$ kubectl edit alertmanager kube-prometheus-stack-alertmanager -n monitor-po
=============================================================
 85   storage:
 86     volumeClaimTemplate:
 87       spec:
 88         storageClassName: managed-premium
 89         accessModes: ["ReadWriteOnce"]
 90         resources:
 91           requests:
 92             storage: 2Gi
=============================================================
alertmanager.monitoring.coreos.com/kube-prometheus-stack-alertmanager edited

04-03. Grafana Volume

sansae@win10pro-worksp:/workspaces$ kubectl edit deploy kube-prometheus-stack-grafana -n monitor-po
=============================================================
400         - mountPath: /var/lib/grafana
401           name: grafana-persistent-storage
-------------------------------------------------------
453       - name: grafana-persistent-storage
454         persistentVolumeClaim:
455           claimName: grafana-pv-claim
=============================================================
deployment.apps/kube-prometheus-stack-grafana edited

05. Service Connection

05-01. Prometheus Operated

sansae@win10pro-worksp:$ kubectl get svc -n monitor-po
NAME                                             TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)                      AGE
alertmanager-operated                            ClusterIP   None           <none>        9093/TCP,9094/TCP,9094/UDP   30m
kube-prometheus-stack-alertmanager               ClusterIP   10.0.92.245    <none>        9093/TCP                     30m
kube-prometheus-stack-grafana                    ClusterIP   10.0.240.51    <none>        80/TCP                       30m
kube-prometheus-stack-kube-state-metrics         ClusterIP   10.0.47.252    <none>        8080/TCP                     30m
kube-prometheus-stack-operator                   ClusterIP   10.0.215.243   <none>        443/TCP                      30m
kube-prometheus-stack-prometheus                 ClusterIP   10.0.152.193   <none>        9090/TCP                     30m
kube-prometheus-stack-prometheus-node-exporter   ClusterIP   10.0.216.169   <none>        9100/TCP                     30m
prometheus-operated                              ClusterIP   None           <none>        9090/TCP                     30m

sansae@win10pro-worksp:$ kubectl port-forward service/prometheus-operated 9090 -n monitor-po
Forwarding from 127.0.0.1:9090 -> 9090
Forwarding from [::1]:9090 -> 9090

05-02. Grafana

sansae@win10pro-worksp:$ kubectl port-forward service/kube-prometheus-stack-grafana 8000:80 -n monitor-po
Forwarding from 127.0.0.1:8000 -> 3000
Forwarding from [::1]:8000 -> 3000
Handling connection for 8000
  • default user/password is admin/prom-operator

05-03. AlertManager

sansae@win10pro-worksp:$ kubectl port-forward service/kube-prometheus-stack-alertmanager 9093:9093 -n monitor-po
Forwarding from 127.0.0.1:9093 -> 9093
Forwarding from [::1]:9093 -> 9093

참조:

https://kangwoo.kr/2020/06/20/kubernetes-monitoring-3-kube-prometheus-%ec%84%a4%ec%b9%98-%ed%9b%84-%ed%95%b4%ec%95%bc-%ed%95%a0%ec%9d%bc/

https://waspro.tistory.com/588

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