kubernetes云平台管理实战：部署heapster监控（十七）
作者：互联网
一、实验准备
1、文件结构与组成
[root@master heapster-influxdb]# ll total 20 -rw-r--r-- 1 root root 414 May 13 16:35 grafana-service.yaml -rw-r--r-- 1 root root 694 May 21 12:14 heapster-controller.yaml -rw-r--r-- 1 root root 249 May 13 16:36 heapster-service.yaml -rw-r--r-- 1 root root 1627 May 13 17:19 influxdb-grafana-controller.yaml -rw-r--r-- 1 root root 259 May 13 16:37 influxdb-service.yaml
2、具体内容
grafana-service.yaml
[root@master heapster-influxdb]# cat grafana-service.yaml
apiVersion: v1
kind: Service
metadata:
labels:
kubernetes.io/cluster-service: 'true'
kubernetes.io/name: monitoring-grafana
name: monitoring-grafana
namespace: kube-system
spec:
# In a production setup, we recommend accessing Grafana through an external Loadbalancer
# or through a public IP.
# type: LoadBalancer
ports:
- port: 80
targetPort: 3000
selector:
name: influxGrafana
heapster-controller.yaml
[root@master heapster-influxdb]# cat heapster-controller.yaml
apiVersion: v1
kind: ReplicationController
metadata:
labels:
k8s-app: heapster
name: heapster
version: v6
name: heapster
namespace: kube-system
spec:
replicas: 1
selector:
k8s-app: heapster
version: v6
template:
metadata:
labels:
k8s-app: heapster
version: v6
spec:
nodeSelector:
kubernetes.io/hostname: master
containers:
- name: heapster
image: 192.168.118.18:5000/heapster:canary
imagePullPolicy: IfNotPresent
command:
- /heapster
- --source=kubernetes:http://192.168.118.18:8080?inClusterConfig=false
- --sink=influxdb:http://monitoring-influxdb:8086
heapster-service.yaml
[root@master heapster-influxdb]# cat heapster-service.yaml
apiVersion: v1
kind: Service
metadata:
labels:
kubernetes.io/cluster-service: 'true'
kubernetes.io/name: Heapster
name: heapster
namespace: kube-system
spec:
ports:
- port: 80
targetPort: 8082
selector:
k8s-app: heapster
influxdb-grafana-controller.yaml
[root@master heapster-influxdb]# cat influxdb-grafana-controller.yaml
apiVersion: v1
kind: ReplicationController
metadata:
labels:
name: influxGrafana
name: influxdb-grafana
namespace: kube-system
spec:
replicas: 1
selector:
name: influxGrafana
template:
metadata:
labels:
name: influxGrafana
spec:
containers:
- name: influxdb
image: 192.168.118.18:5000/heapster_influxdb:v0.5
imagePullPolicy: IfNotPresent
volumeMounts:
- mountPath: /data
name: influxdb-storage
- name: grafana
imagePullPolicy: IfNotPresent
image: 192.168.118.18:5000/heapster_grafana:v2.6.0
env:
- name: INFLUXDB_SERVICE_URL
value: http://monitoring-influxdb:8086
# The following env variables are required to make Grafana accessible via
# the kubernetes api-server proxy. On production clusters, we recommend
# removing these env variables, setup auth for grafana, and expose the grafana
# service using a LoadBalancer or a public IP.
- name: GF_AUTH_BASIC_ENABLED
value: "false"
- name: GF_AUTH_ANONYMOUS_ENABLED
value: "true"
- name: GF_AUTH_ANONYMOUS_ORG_ROLE
value: Admin
- name: GF_SERVER_ROOT_URL
value: /api/v1/proxy/namespaces/kube-system/services/monitoring-grafana/
volumeMounts:
- mountPath: /var
name: grafana-storage
nodeSelector:
kubernetes.io/hostname: 192.168.118.18
volumes:
- name: influxdb-storage
emptyDir: {}
- name: grafana-storage
emptyDir: {}
influxdb-service.yaml
[root@master heapster-influxdb]# cat influxdb-service.yaml
apiVersion: v1
kind: Service
metadata:
labels: null
name: monitoring-influxdb
namespace: kube-system
spec:
ports:
- name: http
port: 8083
targetPort: 8083
- name: api
port: 8086
targetPort: 8086
selector:
name: influxGrafana
镜像仓库
[root@master dashboard]# docker images REPOSITORY TAG IMAGE ID CREATED SIZE 192.168.118.18:5000/heapster_influxdb v0.5 a47993810aac 4 years ago 251 MB 192.168.118.18:5000/heapster_grafana v2.6.0 4fe73eb13e50 4 years ago 267 MB 192.168.118.18:5000/heapster canary 0a56f7040da5 3 years ago 971 MB
二、操作演示过程
1、安装部署检查
创建数据库容器
[root@master pod]# kubectl create -f heapster-influxdb/ service "monitoring-grafana" created replicationcontroller "heapster" created service "heapster" created replicationcontroller "influxdb-grafana" created service "monitoring-influxdb" created
检查
[root@master ~]# kubectl get pod -o wide --all-namespaces|grep kube-system kube-system heapster-hrfmb 1/1 Running 0 5s 172.16.56.3 192.168.118.18 kube-system influxdb-grafana-0lj0n 2/2 Running 0 4s 172.16.56.4 192.168.118.18 kube-system kube-dns-1835838994-jm5bk 4/4 Running 0 6h 172.16.99.3 192.168.118.20 kube-system kubernetes-dashboard-latest-2728556226-fc2pc 1/1 Running 0 5h 172.16.60.6 192.168.118.19
2、遇到的坑
状态查看
[root@master pod]# kubectl get svc --namespace=kube-system NAME CLUSTER-IP EXTERNAL-IP PORT(S) AGE heapster 10.254.31.250 <none> 80/TCP 1m kube-dns 10.254.230.254 <none> 53/UDP,53/TCP 4h kubernetes-dashboard 10.254.245.38 <none> 80/TCP 3h monitoring-grafana 10.254.153.72 <none> 80/TCP 1m monitoring-influxdb 10.254.137.174 <none> 8083/TCP,8086/TCP 1m [root@master pod]# kubectl get pod -n kube-system NAME READY STATUS RESTARTS AGE heapster-2l264 0/1 Pending 0 1m influxdb-grafana-j602n 0/2 Pending 0 1m kube-dns-1835838994-jm5bk 4/4 Running 0 4h kubernetes-dashboard-latest-2728556226-fc2pc 1/1 Running 0 2h
错误信息
[root@master pod]# kubectl describe pods heapster-lq553 --namespace=kube-system
Name: heapster-lq553
......
Events:
FirstSeen LastSeen Count From SubObjectPath Type Reason Message
--------- -------- ----- ---- ------------- -------- ------ -------
26m 23s 92 {default-scheduler } Warning FailedScheduling pod (heapster-lq553) failed to fit in any node
fit failure summary on nodes : MatchNodeSelector (2)
处理方法
spec:
nodeSelector:
kubernetes.io/hostname: master #这里一定要和自己的节点hostnam保持一致
3、nodeSelector
labels 在 K8s 中是一个很重要的概念，作为一个标识，Service、Deployments 和 Pods 之间的关联都是通过 label 来实现的。而每个节点也都拥有 label，通过设置 label 相关的策略可以使得 pods 关联到对应 label 的节点上。nodeSelector 是最简单的约束方式。nodeSelector 是 PodSpec 的一个字段。
通过--show-labels可以查看当前nodes的labelsctl get all ...... NAME READY STATUS RESTARTS AGE po/mysql-3qkf1 1/1 Running 0 15h po/myweb-z2g3m 1/1 Running 0 15h
三、测试
四、监控的信息来源在哪里
1、从架构图中看来源的组件
2、配置/etc/kubernetes/kubelet开启cadvisor
vim /etc/kubernetes/kubelet 修改21行如下：--cadvisor-port=8080 KUBELET_ARGS="--cluster_dns=10.254.230.254 --cluster_domain=cluster.local --cadvisor-port=8080"
重启服务
systemctl restart kubelet.service systemctl restart kube-proxy.service
3、web页面截图
浏览器地址栏输入：
http://192.168.118.19:8080/containers/
总览
cpu
内存
网络
磁盘
标签：十七,kubernetes,heapster,influxdb,grafana,kube,root,name 来源： https://www.cnblogs.com/luoahong/p/12936543.html