k8s用户界面k8s-manager的本质及如何进行部署

k8s用户界面k8s-manager的本质及如何进行部署，相信很多没有经验的人对此束手无策，为此本文总结了问题出现的原因和解决方法，通过这篇文章希望你能解决这个问题。

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k8s用户界面——k8s-manager

1、k8s-manager简介：

①、k8s-manager是一个基于浏览器的接口Kubernetes API，功能同kubectl。

②、当前版本和官方的kube-dashboard，但不是一个等级

③、k8s-manager镜像有200M左右，有点大，登陆进去，运行的是nginx服务，nginx配置文件：/etc/nginx/sites-enabled/default，主目录：/var/www

④、web界面只能查看namespace、events、nodes等简单信息

⑤、Resource Quotas功能，未开通，期待

⑥、仅供学习扩展

2、部署：

①、下载镜像：

docker pull mlamina/k8s-manager:latest

看下载过程，发现这个镜像在build的时候，有很多RUN

[root@localhost kube-1.2]# docker pull mlamina/k8s-manager:latest

Trying to pull repository docker.io/mlamina/k8s-manager ... latest: Pulling from mlamina/k8s-manager

cacc99976415: Pull complete

5b66679e02f4: Pull complete

1f8c9c887b89: Pull complete

f0dc6e5bff03: Pull complete

9dcf5abc367e: Pull complete

9fffafe11022: Pull complete

ca36392ac8a5: Pull complete

d26280472f7d: Pull complete

32e3fac5657a: Pull complete

3972aa49a3e3: Pull complete

4caa999e314e: Pull complete

1a2d1ead0644: Pull complete

2a06190131f5: Pull complete

104b4e83cb1b: Pull complete

2db0330dd6ee: Pull complete

af5842bf4830: Pull complete

d47dfdd163f1: Pull complete

d84ad8831181: Pull complete

dd66db5193b6: Pull complete

67fc7feb5c34: Pull complete

3cead704ab86: Pull complete

22b28de9f034: Already exists

Digest: sha256:53e80dcc60a6b23169025f323bcf85a6f5518ab1a973a8e3d294cc81e5ee0017

Status: Downloaded newer image for docker.io/mlamina/k8s-manager:latest

②、创建Namespace：

#创建namespace

[1065][root@www : kube-1.2]# cat kube-system.json

{

"kind": "Namespace",

"apiVersion": "v1",

"metadata": {

"name": "kube-system"

}

[1066][root@www : kube-1.2]#

[1066][root@www : kube-1.2]# kubectl create -f kube-system.json

namespace "kube-system" created

[1067][root@www : kube-1.2]#

③、创建k8s-manager副本及pod：

[1069][root@www: kube-1.2]# cat k8s-manager-rc.yml

apiVersion: v1

kind: ReplicationController

metadata:

namespace: kube-system

labels:

app: k8s-manager

spec:

replicas: 1

selector:

app: k8s-manager

template:

metadata:

labels:

app: k8s-manager

spec:

containers:

- image: docker.io/mlamina/k8s-manager:latest

resources:

limits:

cpu: 100m

memory: 50Mi

ports:

- containerPort: 80

[1070][root@www: kube-1.2]#

[1070][root@www: kube-1.2]# kubectl create -f k8s-manager-rc.yml

replicationcontroller "k8s-manager" created

[1071][root@www: kube-1.2]#

[1072][root@www: kube-1.2]# kubectl get pods --all-namespaces

NAMESPACE NAME READY STATUS RESTARTS AGE

kube-system k8s-manager-3ry8b 0/1 ContainerCreating 0 15s

[1072][root@www: kube-1.2]#

[1073][root@www: kube-1.2]# /usr/bin/kubectl describe pod k8s-manager-3ry8b --namespace=kube-system

Name: k8s-manager-3ry8b

Namespace: kube-system

Node: 192.168.16.234/192.168.16.234

Start Time: Wed, 29 Jun 2016 14:16:30 +0800

Labels: app=k8s-manager

Status: Running

IP: 172.22.3.2

Controllers: ReplicationController/k8s-manager

Containers:

k8s-manager:

Container ID: docker://54cdc0e3727ef91c9d32560fa8c16ec06b4371d33e0a38bfe36a2938c2324195

Image: docker.io/mlamina/k8s-manager:latest

Image ID: docker://22b28de9f0345b9add9bae73ea191a7441783ecfc3a4f0a68abec8dc3ee803ef

Port: 80/TCP

QoS Tier:

memory: Guaranteed

cpu: Guaranteed

Limits:

cpu: 100m

memory: 50Mi

Requests:

cpu: 100m

memory: 50Mi

State: Running

Started: Wed, 29 Jun 2016 14:16:50 +0800

Ready: True

Restart Count: 0

Environment Variables:

Conditions:

Type Status

Ready True

Volumes:

default-token-pu9pf:

Type: Secret (a volume populated by a Secret)

SecretName: default-token-pu9pf

Events:

FirstSeen LastSeen Count From SubobjectPath Type Reason Message

--------- -------- ----- ---- ------------- -------- ------ -------

52s 52s 1 {kubelet 192.168.16.234} spec.containers{k8s-manager} Normal Pulling pulling image "docker.io/mlamina/k8s-manager:latest"

47s 47s 1 {default-scheduler } Normal Scheduled Successfully assigned k8s-manager-3ry8b to 192.168.16.234

37s 37s 1 {kubelet 192.168.16.234} spec.containers{k8s-manager} Normal Pulled Successfully pulled image "docker.io/mlamina/k8s-manager:latest"

36s 36s 1 {kubelet 192.168.16.234} spec.containers{k8s-manager} Normal Created Created container with docker id 54cdc0e3727e

35s 35s 1 {kubelet 192.168.16.234} spec.containers{k8s-manager} Normal Started Started container with docker id 54cdc0e3727e

[1074][root@www: kube-1.2]#

[1074][root@www: kube-1.2]# kubectl get pods --all-namespaces

NAMESPACE NAME READY STATUS RESTARTS AGE

kube-system k8s-manager-3ry8b 1/1 Running 0 53s

[1075][root@www: kube-1.2]#

④、创建service：

[1075][root@www: kube-1.2]# cat k8s-manager-svc.yml

apiVersion: v1

kind: Service

metadata:

namespace: kube-system

labels:

app: k8s-manager

spec:

ports:

- port: 80

targetPort: http

selector:

app: k8s-manager

[1076][root@www: kube-1.2]#

[1076][root@www: kube-1.2]# kubectl create -f k8s-manager-svc.yml

service "k8s-manager" created

[1077][root@www: kube-1.2]#

[1077][root@www: kube-1.2]# kubectl get services --all-namespaces

NAMESPACE NAME CLUSTER-IP EXTERNAL-IP PORT(S) AGE

default kubernetes 10.1.0.1 443/TCP 8m

kube-system k8s-manager 10.1.65.137 80/TCP 4s

[1078][root@www: kube-1.2]#

3、k8s-manager界面介绍：

访问web：

http://192.168.16.100:8080/api/v1/proxy/namespaces/kube-system/services/k8s-manager/

官网上是用https的，但不行，无所谓了

k8s用户界面k8s-manager的本质及如何进行部署

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