조타 장치는 사육사를 배치

발 2023-09-19 03:41:47 독서 시간: null

기본 정보:

투구 v3.12.3

쿠버네티스 v1.28.0

Containerd.io 1.6.22

다음은 helm을 사용하여 Zookeeper를 설치, 업그레이드, 롤백, 제거하는 연습 과정을 참고용으로 정리한 것입니다.

1. helm에 BitNami 창고 추가

helm repo에 bitnami 추가 https://charts.bitnami.com/bitnami

zhangzk@k8smaster:~$ helm repo add bitnami https://charts.bitnami.com/bitnami
"bitnami" has been added to your repositories

2. 사육사 차트 보기

  헬름 검색 레포 사육사

zhangzk@k8smaster:~$ helm search repo zookeeper
NAME                            CHART VERSION   APP VERSION     DESCRIPTION                                       
bitnami/zookeeper               12.1.0          3.9.0           Apache ZooKeeper provides a reliable, centraliz...
bitnami/dataplatform-bp2        12.0.5          1.0.1           DEPRECATED This Helm chart can be used for the ...
bitnami/kafka                   25.1.0          3.5.1           Apache Kafka is a distributed streaming platfor...
bitnami/schema-registry         13.1.0          7.4.1           Confluent Schema Registry provides a RESTful in...
bitnami/solr                    8.0.0           9.3.0           Apache Solr is an extremely powerful, open sour...

3. 차트를 로컬로 가져옵니다.

  헬름 풀 비트나미/사육사

zhangzk@k8smaster:~/helm$ helm pull bitnami/zookeeper
zhangzk@k8smaster:~/helm$ ll
total 52
drwxrwxr-x 2 zhangzk zhangzk  4096 Aug 25 10:17 ./
drwxr-x--- 8 zhangzk zhangzk  4096 Aug 25 10:17 ../
-rw-r--r-- 1 zhangzk zhangzk 42792 Aug 25 10:17 zookeeper-12.1.0.tgz

4. value.yaml 수정

  Zookeeper-12.1.0.tgz의 압축을 풉니다.

zhangzk@k8smaster:~/helm$ tar -zxvf zookeeper-12.1.0.tgz 
zhangzk@k8smaster:~/helm$ cd zookeeper
zhangzk@k8smaster:~/helm/zookeeper$ ll
total 124
drwxrwxr-x 4 zhangzk zhangzk  4096 Aug 25 10:18 ./
drwxrwxr-x 3 zhangzk zhangzk  4096 Aug 25 10:18 ../
-rw-r--r-- 1 zhangzk zhangzk   333 Aug 22 22:43 .helmignore
-rw-r--r-- 1 zhangzk zhangzk   226 Aug 22 22:43 Chart.lock
-rw-r--r-- 1 zhangzk zhangzk   845 Aug 22 22:43 Chart.yaml
-rw-r--r-- 1 zhangzk zhangzk 60180 Aug 22 22:43 README.md
drwxrwxr-x 3 zhangzk zhangzk  4096 Aug 25 10:18 charts/
drwxrwxr-x 2 zhangzk zhangzk  4096 Aug 25 10:18 templates/
-rw-r--r-- 1 zhangzk zhangzk 36205 Aug 22 22:43 values.yaml

value.yaml 파일 수정

수정점 1: 영구 데이터 닫기

## Enable persistence using Persistent Volume Claims
## ref: https://kubernetes.io/docs/user-guide/persistent-volumes/
##
persistence:
  ## @param persistence.enabled Enable ZooKeeper data persistence using PVC. If false, use emptyDir
  ##
  enabled: false

수정점 2: 3개로 수정

## @param replicaCount Number of ZooKeeper nodes
##
replicaCount: 3

5. Helm은 공공 서비스 네임스페이스에 Zookeeper를 설치합니다.

   kubectl은 ns 공공 서비스를 생성합니다.

  helm 설치 사육사 -n public-service .

zhangzk@k8smaster:~/helm/zookeeper$ kubectl create ns public-service
namespace/public-service created
zhangzk@k8smaster:~/helm/zookeeper$ helm install zookeeper -n public-service .
NAME: zookeeper
LAST DEPLOYED: Fri Aug 25 10:39:05 2023
NAMESPACE: public-service
STATUS: deployed
REVISION: 1
TEST SUITE: None
NOTES:
CHART NAME: zookeeper
CHART VERSION: 12.1.0
APP VERSION: 3.9.0

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

ZooKeeper can be accessed via port 2181 on the following DNS name from within your cluster:

    zookeeper.public-service.svc.cluster.local

To connect to your ZooKeeper server run the following commands:

    export POD_NAME=$(kubectl get pods --namespace public-service -l "app.kubernetes.io/name=zookeeper,app.kubernetes.io/instance=zookeeper,app.kubernetes.io/component=zookeeper" -o jsonpath="{.items[0].metadata.name}")
    kubectl exec -it $POD_NAME -- zkCli.sh

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

    kubectl port-forward --namespace public-service svc/zookeeper 2181:2181 &
    zkCli.sh 127.0.0.1:2181

6. Pod 상태 확인

   kubectl get po -n 공공 서비스

zhangzk@k8smaster:~/helm/zookeeper$ kubectl get po -n public-service
NAME          READY   STATUS    RESTARTS   AGE
zookeeper-0   1/1     Running   0          102m
zookeeper-1   1/1     Running   0          102m
zookeeper-2   1/1     Running   0          102m

7. 노드 상태 확인

kubectl exec Zookeeper-0 -n 공공 서비스 /opt/bitnami/zookeeper/bin/zkServer.sh 상태

zhangzk@k8smaster:~/helm/zookeeper$ kubectl exec zookeeper-0 -n public-service  /opt/bitnami/zookeeper/bin/zkServer.sh status
kubectl exec [POD] [COMMAND] is DEPRECATED and will be removed in a future version. Use kubectl exec [POD] -- [COMMAND] instead.
/opt/bitnami/java/bin/java
ZooKeeper JMX enabled by default
Using config: /opt/bitnami/zookeeper/bin/../conf/zoo.cfg
Client port found: 2181. Client address: localhost. Client SSL: false.
Mode: follower

8. 업그레이드 버전 업그레이드

Values.yaml 파일의 ReplicaCount를 1로 수정하고 저장합니다.

## @param replicaCount Number of ZooKeeper nodes
##
replicaCount: 1

  그런 다음 helm 업그레이드 -n public-service Zookeeper 명령을 실행합니다.

zhangzk@k8smaster:~/helm/zookeeper$ helm upgrade -n public-service zookeeper .
Release "zookeeper" has been upgraded. Happy Helming!
NAME: zookeeper
LAST DEPLOYED: Fri Aug 25 14:40:05 2023
NAMESPACE: public-service
STATUS: deployed
REVISION: 2
TEST SUITE: None
NOTES:
CHART NAME: zookeeper
CHART VERSION: 12.1.0
APP VERSION: 3.9.0

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

ZooKeeper can be accessed via port 2181 on the following DNS name from within your cluster:

    zookeeper.public-service.svc.cluster.local

To connect to your ZooKeeper server run the following commands:

    export POD_NAME=$(kubectl get pods --namespace public-service -l "app.kubernetes.io/name=zookeeper,app.kubernetes.io/instance=zookeeper,app.kubernetes.io/component=zookeeper" -o jsonpath="{.items[0].metadata.name}")
    kubectl exec -it $POD_NAME -- zkCli.sh

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

    kubectl port-forward --namespace public-service svc/zookeeper 2181:2181 &
    zkCli.sh 127.0.0.1:2181

포드를 다시 확인하고 포드가 하나만 있는지 확인합니다. kubectl get po -n public-service

zhangzk@k8smaster:~/helm/zookeeper$ kubectl get po -n public-service
NAME          READY   STATUS    RESTARTS   AGE
zookeeper-0   1/1     Running   0          20s

9. 롤백 버전

1) 릴리스 기록 보기: helm History Zookeeper -n public-service

zhangzk@k8smaster:~/helm/zookeeper$ helm history zookeeper -n public-service
REVISION        UPDATED                         STATUS          CHART                   APP VERSION     DESCRIPTION     
1               Fri Aug 25 12:40:59 2023        superseded      zookeeper-12.1.0        3.9.0           Install complete
2               Fri Aug 25 14:40:05 2023        deployed        zookeeper-12.1.0        3.9.0           Upgrade complete

2) 버전 1로 롤백: helm 롤백 Zookeeper 1 -n public-service

hangzk@k8smaster:~/helm/zookeeper$ helm rollback zookeeper 1 -n public-service
Rollback was a success! Happy Helming!

3) 포드를 다시 확인하고 3개의 포드로 변경되었는지 확인합니다. kubectl get po -n public-service

zhangzk@k8smaster:~/helm/zookeeper$ kubectl get po -n public-service
NAME          READY   STATUS    RESTARTS   AGE
zookeeper-0   1/1     Running   0          30m
zookeeper-1   1/1     Running   0          31m
zookeeper-2   1/1     Running   0          31m

10. 릴리스 제거

  helm 제거 사육사 -n 공공 서비스

zhangzk@k8smaster:~/helm/zookeeper$ helm uninstall zookeeper -n public-service
release "zookeeper" uninstalled

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