Helm安装Prometheus Operator

1.Helm客户端安装

https://github.com/helm/helm/releases

下载二进制包,将helm文件复制到/usr/bin

helm version查看是否生效

fxx2@kube-node-1:~$ helm version
Client: &version.Version{SemVer:"v2.16.1", GitCommit:"bbdfe5e7803a12bbdf97e94cd847859890cf4050", GitTreeState:"clean"}

2.Tiller服务器安装

 创建服务账号并授权

fxx2@kube-node-1:~$ cat rbac-config.yaml
apiVersion: v1
kind: ServiceAccount
metadata:
name: tiller
namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: tiller
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: cluster-admin
subjects:
- kind: ServiceAccount
name: tiller
namespace: kube-system
fxx2@kube-node-1:~$ sudo kubectl apply -f rbac-config.yaml

安装非常简单，执行helm init即可，但默认初始化过程需拉取google镜像，需指定国内镜像源。

fxx2@kube-node-1:~$ sudo helm init --service-account tiller --upgrade -i registry.cn-hangzhou.aliyuncs.com/google_containers/tiller:v2.16.1 \
--stable-repo-url https://kubernetes-charts.storage.googleapis.com
##################
fxx2@kube-node-1:~$ sudo helm repo list   ###查看仓库源，可通过helm repo add添加
[sudo] password for fxx2:
NAME    URL
stable  https://kubernetes-charts.storage.googleapis.com
local   http://127.0.0.1:8879/charts
fxx2@kube-node-1:~$ helm version   ###查看tiller是否初始化成功
Client: &version.Version{SemVer:"v2.16.1", GitCommit:"bbdfe5e7803a12bbdf97e94cd847859890cf4050", GitTreeState:"clean"}
Server: &version.Version{SemVer:"v2.16.1", GitCommit:"bbdfe5e7803a12bbdf97e94cd847859890cf4050", GitTreeState:"clean"}

3.安装Prometheus Operator

为方便管理，可单独创建一个namespace

kubectl create namespace monitoring

安装Prometheus Operator Deployment

helm install --name prometheus-operator --set rbacEnable=true --namespace=monitoring stable/prometheus-operator

安装Prometheus

helm install --name prometheus --set serviceMonitorsSelector.app=prometheus --set ruleSelector.app=prometheus --namespace=monitoring stable/prometheus

查看安装结果

fxx2@kube-node-1:~$ kubectl get deploy --namespace=monitoring
NAME                                     READY   UP-TO-DATE   AVAILABLE   AGE
prometheus-alertmanager                  0/1     1            0           3d16h
prometheus-kube-state-metrics            1/1     1            1           3d16h
prometheus-operator-grafana              1/1     1            1           3d17h
prometheus-operator-kube-state-metrics   1/1     1            1           3d17h
prometheus-operator-operator             1/1     1            1           3d17h
prometheus-pushgateway                   1/1     1            1           3d16h
prometheus-server                        0/1     1            0           3d16h

修改service类型ClusterIP为NodePort

kubectl edit svc prometheus-operator-grafana -n monitoring
kubectl edit svc prometheus-operator-alertmanager -n monitoring 
kubectl edit svc prometheus-operator-prometheus -n monitoring

查看grafana 的NodePort

fxx2@kube-node-1:~$ kubectl get svc prometheus-operator-grafana -n monitoring
NAME                          TYPE       CLUSTER-IP       EXTERNAL-IP   PORT(S)        AGE
prometheus-operator-grafana   NodePort   10.110.245.253   <none>        80:31415/TCP   3d17h

查看grafana的登陆账号密码

fxx2@kube-node-1:~$ kubectl get secret --namespace monitoring prometheus-operator-grafana -o yaml
...
admin-password: YWRtaW4=
admin-user: YWRtaW4=
ldap-toml: ""
kind: Secret
metadata:
...

#######
echo "YWRtaW4=" | base64 --decode ###解码

4.访问grafana

http://<ip>:<grafana_service_nodeport>  #如上文的31415

参考链接：

https://github.com/coreos/prometheus-operator.git

https://github.com/helm/charts/tree/master/stable/prometheus-operator#prometheus-operator