[Helm] redis 설치하기

• 사전 준비

kubectl, minikube, docker desktop 사전 설치 필요

 

• Redis 설치

1. https://artifacthub.io/ 접속
2. redis 검색
3. redis (Bitnami) 클릭
4. 아래 명령어로 설치: Release Name은 개인적으로 설정

helm install {Release Name} oci://registry-1.docker.io/bitnamicharts/redis

5. Release Name 'my-release' 설치하면 아래와 같은 설치 내용이 나온다. (helm status {Release Name}으로 확인 가능)

Pulled: registry-1.docker.io/bitnamicharts/redis:17.10.1
Digest: sha256:352767b978ba54dff73aab7c80c6a7140a9fa9bbbb8faafcb8612bfad932d2e5
NAME: my-release
LAST DEPLOYED: Sat Apr 29 16:46:46 2023
NAMESPACE: default
STATUS: deployed
REVISION: 1
TEST SUITE: None
NOTES:
CHART NAME: redis
CHART VERSION: 17.10.1
APP VERSION: 7.0.11

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

Redis® can be accessed on the following DNS names from within your cluster:

    my-release-redis-master.default.svc.cluster.local for read/write operations (port 6379)
    my-release-redis-replicas.default.svc.cluster.local for read-only operations (port 6379)



To get your password run:

    export REDIS_PASSWORD=$(kubectl get secret --namespace default my-release-redis -o jsonpath="{.data.redis-password}" | base64 -d)

To connect to your Redis® server:

1. Run a Redis® pod that you can use as a client:

   kubectl run --namespace default redis-client --restart='Never'  --env REDIS_PASSWORD=$REDIS_PASSWORD  --image docker.io/bitnami/redis:7.0.11-debian-11-r0 --command -- sleep infinity

   Use the following command to attach to the pod:

   kubectl exec --tty -i redis-client \
   --namespace default -- bash

2. Connect using the Redis® CLI:
   REDISCLI_AUTH="$REDIS_PASSWORD" redis-cli -h my-release-redis-master
   REDISCLI_AUTH="$REDIS_PASSWORD" redis-cli -h my-release-redis-replicas

To connect to your database from outside the cluster execute the following commands:

    kubectl port-forward --namespace default svc/my-release-redis-master 6379:6379 &
    REDISCLI_AUTH="$REDIS_PASSWORD" redis-cli -h 127.0.0.1 -p 6379

6. kubectl get all 입력해보면 아래와 같이 service 및 pod가 실행되어 있는 것을 확인할 수 있다.

NAME                              READY   STATUS    RESTARTS   AGE
pod/my-release-redis-master-0     1/1     Running   0          35m
pod/my-release-redis-replicas-0   1/1     Running   0          35m
pod/my-release-redis-replicas-1   1/1     Running   0          34m
pod/my-release-redis-replicas-2   1/1     Running   0          34m

NAME                                TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)    AGE
service/kubernetes                  ClusterIP   10.96.0.1       <none>        443/TCP    8d
service/my-release-redis-headless   ClusterIP   None            <none>        6379/TCP   35m
service/my-release-redis-master     ClusterIP   10.103.65.146   <none>        6379/TCP   35m
service/my-release-redis-replicas   ClusterIP   10.99.242.91    <none>        6379/TCP   35m

NAME                                         READY   AGE
statefulset.apps/my-release-redis-master     1/1     35m
statefulset.apps/my-release-redis-replicas   3/3     35m

7. 환경 변수에 비밀번호 저장

export REDIS_PASSWORD=$(kubectl get secret --namespace default my-release-redis -o jsonpath="{.data.redis-password}" | base64 -d)

8. 환경 변수 비밀번호 확인

echo $REDIS_PASSWORD

9.  포트포워딩 설정

kubectl port-forward --namespace default svc/my-release-redis-master 6379:6379

10. 새로운 cmd로 redis 접속 확인

redis-cli -h 127.0.0.1 -p 6379 --askpass
비밀번호 입력 후 접속 확인