介绍
Netdata可用于监视kubernetes集群并显示有关集群的信息，包括节点内存使用率、CPU、网络等，简单的说，Netdata仪表板可让您全面了解Kubernetes集群，包括在每个节点上运行的服务和Pod。
安装HELM
root@hello:~# curl https://baltocdn.com/helm/signing.asc | sudo apt-key add -
root@hello:~# sudo apt-get install apt-transport-https --yes
root@hello:~# echo "deb https://baltocdn.com/helm/stable/debian/ all main" | sudo tee /etc/apt/sources.list.d/helm-stable-debian.list
root@hello:~# sudo apt-get update
root@hello:~# sudo apt-get install helm
添加源并安装
root@hello:~# helm repo add netdata https://netdata.github.io/helmchart/
"netdata" has been added to your repositories
root@hello:~# helm install netdata netdata/netdata
W0420 09:20:51.993046 1306427 warnings.go:70] policy/v1beta1 PodSecurityPolicy is deprecated in v1.21+, unavailable in v1.25+
W0420 09:20:52.298158 1306427 warnings.go:70] policy/v1beta1 PodSecurityPolicy is deprecated in v1.21+, unavailable in v1.25+
NAME: netdata
LAST DEPLOYED: Wed Apr 20 09:20:50 2022
NAMESPACE: default
STATUS: deployed
REVISION: 1
TEST SUITE: None
NOTES:
1. netdata will be available on http://netdata.k8s.local/, on the exposed port of your ingress controller
In a production environment, you
You can get that port via `kubectl get services`. e.g. in the following example, the http exposed port is 31737, the https one is 30069.
The hostname netdata.k8s.local will need to be added to /etc/hosts, so that it resolves to the exposed IP. That IP depends on how your cluster is set up:
- When no load balancer is available (e.g. with minikube), you get the IP shown on `kubectl cluster-info`
- In a production environment, the command `kubectl get services` will show the IP under the EXTERNAL-IP column
The port can be retrieved in both cases from `kubectl get services`
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
exiled-tapir-nginx-ingress-controller LoadBalancer 10.98.132.169 <pending> 80:31737/TCP,443:30069/TCP 11h
root@hello:~# helm list
NAME NAMESPACE REVISION UPDATED STATUS CHART APP VERSION
netdata default 1 2022-04-20 09:20:50.947921117 +0800 CST deployed netdata-3.7.15 v1.33.1
查看POD
root@hello:~# kubectl get pod
NAME READY STATUS RESTARTS AGE
netdata-child-2h65n 2/2 Running 0 77s
netdata-child-dfv82 2/2 Running 0 77s
netdata-child-h6fw6 2/2 Running 0 77s
netdata-child-lc9fd 2/2 Running 0 77s
netdata-child-nh566 2/2 Running 0 77s
netdata-child-ns2p2 2/2 Running 0 77s
netdata-child-v74x5 2/2 Running 0 77s
netdata-child-xjlrv 2/2 Running 0 77s
netdata-parent-57bf6bf47d-vc6fq 1/1 Running 0 77s
添加SVC使外部即可访问
root@hello:~# kubectl get svc
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 18d
netdata ClusterIP 10.102.160.106 <none> 19999/TCP 3m39s
root@hello:~# kubectl expose deployment netdata-parent --type="NodePort" --port 19999
service/netdata-parent exposed
root@hello:~# kubectl get svc
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 18d
netdata ClusterIP 10.102.160.106 <none> 19999/TCP 3m43s
netdata-parent NodePort 10.100.122.173 <none> 19999:30518/TCP 2s
root@hello:~#
通过http://<yourmaster-IP>:30518 访问浏览器中的netdata仪表板
点击左侧可以查看具体每一台机器的信息
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