[install] helm for nginx

zzery·2022년 5월 9일

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zshrc 플러그인에 추가하면 명령어 옵션 보기 편함.
참고 문서: https://ithub.tistory.com/m/346

❯ brew install helm

❯ helm repo add bitnami https://charts.bitnami.com/bitnami
"bitnami" has been added to your repositories

# 확인
❯ helm search repo bitnami

❯ helm search repo bitnami | grep nginx
bitnami/nginx                                   10.2.1          1.21.6          NGINX Open Source is a web server that can be a...
bitnami/nginx-ingress-controller                9.1.27          1.2.0           NGINX Ingress Controller is an Ingress controll...
bitnami/nginx-intel                             1.0.5           0.4.7           NGINX Open Source for Intel is a lightweight se...

nginx를 바로 배포해본다.

❯ helm install helm-nginx bitnami/nginx
NAME: helm-nginx
LAST DEPLOYED: Mon May  9 22:49:20 2022
NAMESPACE: default
STATUS: deployed
REVISION: 1
TEST SUITE: None
NOTES:
CHART NAME: nginx
CHART VERSION: 10.2.1
APP VERSION: 1.21.6

** Please be patient while the chart is being deployed **

NGINX can be accessed through the following DNS name from within your cluster:

    helm-nginx.default.svc.cluster.local (port 80)

To access NGINX from outside the cluster, follow the steps below:

1. Get the NGINX URL by running these commands:

  NOTE: It may take a few minutes for the LoadBalancer IP to be available.
        Watch the status with: 'kubectl get svc --namespace default -w helm-nginx'

    export SERVICE_PORT=$(kubectl get --namespace default -o jsonpath="{.spec.ports[0].port}" services helm-nginx)
    export SERVICE_IP=$(kubectl get svc --namespace default helm-nginx -o jsonpath='{.status.loadBalancer.ingress[0].ip}')
    echo "http://${SERVICE_IP}:${SERVICE_PORT}"
    
❯ helm ls
NAME            NAMESPACE       REVISION        UPDATED                                 STATUS          CHART          APP VERSION
helm-nginx      default         1               2022-05-09 22:49:20.559748444 +0900 KST deployed        nginx-10.2.1   1.21.6    

# docker desktop의 경우 external IP = localhost
# localhost 로 접속하면 nginx 화면이 보임.

upgrade

기본 설정을 알아봤다.
https://github.com/bitnami/charts/tree/master/bitnami/nginx

README.md에 server block 예시도 있어서 갖다쓰기 좋음.

❯ helm show all bitnami/nginx > default.yaml

# 비교 결과 git Repo의 values.yaml과 차이가 없음.

# ---

# serverBlock에 패스를 넣어봄.
❯ cat values.yaml
 421   │ ## @param serverBlock Custom server block to be added to NGINX configuration
 422   │ ## ...
 437   │ serverBlock: |-
 438   │   server {
 439   │     listen 0.0.0.0:8080;
 440   │     location /hello {
 441   │       return 200 "hello!";
 442   │     }
 443   │   }

# 업그레이드 - revision 2 로 지정됐고 파드도 새로 떴음.
❯ helm upgrade -f values.yaml helm-nginx bitnami/nginx
Release "helm-nginx" has been upgraded. Happy Helming!
NAME: helm-nginx
LAST DEPLOYED: Mon May  9 23:38:12 2022
NAMESPACE: default
STATUS: deployed
REVISION: 2
TEST SUITE: None
NOTES:
CHART NAME: nginx
CHART VERSION: 10.2.1
APP VERSION: 1.21.6
# ...

반영 확인.
참고로 serverBlock 정보는 configMap으로 반영되는 형식이다.
(같은 ns에서 configMap 조회해보면 관련된게 하나 보임)

❯ curl localhost/hello
hello!

cloneStaticSiteFromGit

웹서버인 nginx에 정적 웹사이트를 붙여주는 역할이다.

예를 들어 hugo 블로그는 빌드하면 public 디렉토리에 저장되는데
그 안에 생성되는 내용을 새 repo로 따고 그걸 가져오는 역할이다.

예시는 여기 > https://github.com/solidcellaMoon/temp-static-site

## Get the server static content from a git repository
## NOTE: This will override staticSiteConfigmap and staticSitePVC
##
cloneStaticSiteFromGit:
  ## @param cloneStaticSiteFromGit.enabled Get the server static content from a Git repository
  ##
  enabled: false
  ## Bitnami Git image version
  ## ref: https://hub.docker.com/r/bitnami/git/tags/
  ## @param cloneStaticSiteFromGit.image.registry Git image registry
  ## @param cloneStaticSiteFromGit.image.repository Git image repository
  ## @param cloneStaticSiteFromGit.image.tag Git image tag (immutable tags are recommended)
  ## @param cloneStaticSiteFromGit.image.pullPolicy Git image pull policy
  ## @param cloneStaticSiteFromGit.image.pullSecrets Specify docker-registry secret names as an array
  ## ...