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* PUSH NOTE : 수학 공부에 대한 고찰.md

* PUSH NOTE : 09. Lp Functions.md

* PUSH ATTACHMENT : mt-09.png

* PUSH NOTE : 08. Comparison with the Riemann Integral.md

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* PUSH NOTE : 04. Measurable Functions.md

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* PUSH NOTE : 06. Convergence Theorems.md

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* PUSH NOTE : 07. Dominated Convergence Theorem.md

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* PUSH NOTE : 05. Lebesgue Integration.md

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* PUSH NOTE : 03. Measure Spaces.md

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* PUSH NOTE : 02. Construction of Measure.md

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* PUSH NOTE : 01. Algebra of Sets and Set Functions.md

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* PUSH NOTE : Rules of Inference with Coq.md

* PUSH NOTE : 블로그 이주 이야기.md

* PUSH NOTE : Secure IAM on AWS with Multi-Account Strategy.md

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* PUSH NOTE : You and Your Research, Richard Hamming.md

* PUSH NOTE : 10. Digital Signatures.md

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* PUSH NOTE : 1. OTP, Stream Ciphers and PRGs.md

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* PUSH NOTE : 0. Introduction.md

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* PUSH NOTE : 09. Transport Layer Security.md

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* PUSH NOTE : 08. Public Key Infrastructure.md

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* PUSH NOTE : 07. Public Key Cryptography.md

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* PUSH NOTE : Search Time in Hash Tables.md

* PUSH NOTE : 랜덤 PS일지 (1).md

* chore: rearrange articles

* feat: fix paths

* feat: fix all broken links

* feat: title font to palatino
This commit is contained in:
Sungchan Yi
2024-11-13 14:28:45 +09:00
committed by GitHub
parent c9f7af5f3d
commit 23aeb29ad8
78 changed files with 2105 additions and 2030 deletions
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23
_posts/Development/Kubernetes/2021-04-18-08-accessing-pod-metadata.md
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@@ -2,17 +2,18 @@
share: true
toc: true
categories: [Development, Kubernetes]
path: "_posts/development/kubernetes"
tags: [kubernetes, sre, devops]
title: "08. Accessing Pod Metadata and Other Resources from Applications"
date: "2021-04-18"
github_title: "2021-04-18-08-accessing-pod-metadata"
image:
path: /assets/img/posts/Development/Kubernetes/k8s-08.jpeg
path: /assets/img/posts/development/kubernetes/k8s-08.jpeg
attachment:
folder: assets/img/posts/Development/Kubernetes
folder: assets/img/posts/development/kubernetes
---
![k8s-08.jpeg](/assets/img/posts/Development/Kubernetes/k8s-08.jpeg) _Using the files from the default-token Secret to talk to the API server (출처: https://livebook.manning.com/book/kubernetes-in-action/chapter-8)_
![k8s-08.jpeg](/assets/img/posts/development/kubernetes/k8s-08.jpeg) _Using the files from the default-token Secret to talk to the API server (출처: https://livebook.manning.com/book/kubernetes-in-action/chapter-8)_
### 주요 내용
@@ -138,7 +139,7 @@ spec:
volumes:
- name: downward
downwardAPI:
items: # 설정한 경로의 파일에 필요한 정보가 저장된다
items: # 설정한 경로의 파일에 필요한 정보가 저장된다
- path: "podName"
fieldRef:
fieldPath: metadata.name
@@ -217,7 +218,7 @@ API 서버는 HTTPS 를 사용하므로, 인증 없이는 직접 요청을 보
`kubectl proxy` 를 이용하면 로컬에서 HTTP 요청을 받아서 Kubernetes API 서버로 요청을 전달해 주고, 인증도 알아서 처리해준다. 더불어 매 요청마다 서버의 인증서를 확인하여 MITM attack 을 막고 실제 서버와 통신할 수 있도록 해준다.
```
$ kubectl proxy
$ kubectl proxy
Starting to serve on 127.0.0.1:8001
```
@@ -380,13 +381,13 @@ root@curl:/# curl https://kubernetes -k
"kind": "Status",
"apiVersion": "v1",
"metadata": {
},
"status": "Failure",
"message": "forbidden: User \"system:anonymous\" cannot get path \"/\"",
"reason": "Forbidden",
"details": {
},
"code": 403
}
@@ -404,13 +405,13 @@ root@curl:/# curl --cacert /var/run/secrets/kubernetes.io/serviceaccount/ca.crt
"kind": "Status",
"apiVersion": "v1",
"metadata": {
},
"status": "Failure",
"message": "forbidden: User \"system:anonymous\" cannot get path \"/\"",
"reason": "Forbidden",
"details": {
},
"code": 403
}
@@ -434,13 +435,13 @@ $ curl -H "Authorization: Bearer $TOKEN" https://kubernetes
```
> Role-based access control ([RBAC](https://kubernetes.io/docs/reference/access-authn-authz/rbac/)) 이 실행되고 있는 클러스터에서는 위 `curl` 에서 에러가 난다. 일단 테스트를 위해서 임시적으로
>
>
> ```bash
> kubectl create clusterrolebinding permissive-binding \
> --clusterrole=cluster-admin \
> --group=system:serviceaccounts
> ```
>
>
> 를 입력하여 모든 serviceaccounts 에 admin 권한을 줄 수 있다 ㅋㅋㅋ;
#### 현재 pod 의 namespace 가져오기