[雲端] K8s / IDE / Lens
===
###### tags: `雲端 / K8s`
###### tags: `雲端`, `K8s`

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[TOC]

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### 下載與安裝
- https://k8slens.dev/
- ```$ sudo snap install kontena-lens --classic```

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### 開啟

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### 把 TWCC 203.145.218.3 的 k8s 加入

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### 建立資源1: pod

apiVersion: v1
kind: Pod
metadata:
name: tj-purple-whale-pod
spec:
containers:
- name: tj-purple-whale-container
image: hcwxd/purple-whale
ports:
- containerPort: 3000

查看資源狀態：
[![](https://i.imgur.com/PiWTw0e.png)](https://i.imgur.com/PiWTw0e.png)

並點選 Ports: 3000/TCP
[![](https://i.imgur.com/1opfbTz.png)](https://i.imgur.com/1opfbTz.png)

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### 建立資源2: Deployment

apiVersion: apps/v1
kind: Deployment
metadata:
name: tj-nginx-deploy
spec:
replicas: 3
template:
metadata:
name: tj-nginx-pod
spec:
containers:
- name: tj-nginx-container
image: nginx
ports:
- containerPort: 80

顯示「巨大的紅色錯誤」：缺少 selector 欄位
![](https://i.imgur.com/huhQXdM.png)
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修正如下：

apiVersion: apps/v1
kind: Deployment
metadata:
name: tj-nginx-deploy
spec:
replicas: 3
selector:
matchLabels:
author: tj_tsai
template:
metadata:
name: tj-nginx-pod
labels:
author: tj_tsai
spec:
containers:
- name: tj-nginx-container
image: nginx
ports:
- containerPort: 80

進行水平縮放
![](https://i.imgur.com/XA2uC1J.png)

建立 pod 中
[![](https://i.imgur.com/ni4yoNz.png)](https://i.imgur.com/ni4yoNz.png)

pod 建立完成
[![](https://i.imgur.com/RKDudKK.png)](https://i.imgur.com/RKDudKK.png)

# ReplicaSet
$ kubectl get rs
NAME DESIRED CURRENT READY AGE
tj-nginx-deploy-996c9c6b9 4 4 4 13m

# Deployment
$ kubectl get deploy
NAME READY UP-TO-DATE AVAILABLE AGE
tj-nginx-deploy 4/4 4 4 13m

# ReplicaController
$ kubectl get rc
No resources found in default namespace.

$ kubectl scale --replicas=6 deploy/tj-nginx-deploy
deployment.apps/tj-nginx-deploy scaled

$ kubectl scale --replicas=2 rs/tj-nginx-deploy-996c9c6b9
replicaset.apps/tj-nginx-deploy-996c9c6b9 scaled

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## 參考資料
- [簡單實用的Kubernetes IDE — Lens](https://medium.com/@tasslin/%E7%B0%A1%E5%96%AE%E5%AF%A6%E7%94%A8%E7%9A%84kubernetes-ide-lens-d8bba1fc06ad)