|NO.Z.00277|——————————|CloudNative|——|KuberNetes&中间件容器化及helm.V24|——|中间件.v04|helm.v3.5.4|扩容缩容|zookeeper&kafka|

一、kafka和zookeeper集群扩容和缩容

### --- 扩容kafka和zookeeper：扩容副本数均为2
~~~     扩容kafka副本数为2；在生产环境中，不可以使用2个副本数，当前环境资源有限，
~~~     只是为查看效果

[root@k8s-master01 kafka]# pwd
/root/README/install-some-apps/zookeeper-kafka/kafka
[root@k8s-master01 kafka]# helm upgrade kafka -n public-service --set zookeeper.enabled=false --set replicaCount=2 --set externalZookeeper.servers=zookeeper .

### --- 扩容zookeeper

[root@k8s-master01 zookeeper]# pwd
/root/README/install-some-apps/zookeeper-kafka/zookeeper
[root@k8s-master01 zookeeper]# helm upgrade zookeeper -n public-service --set replicaCount=2 --set auth.enabled=false --set allowAnonymousLogin=true .

### --- 查看扩容后结果

[root@k8s-master01 zookeeper-kafka]# kubectl get po -n public-service -owide
NAME          READY   STATUS    RESTARTS   AGE   IP              NODE         NOMINATED NODE   READINESS GATES
kafka-0       1/1     Running   0          19m   172.17.125.23   k8s-node01   <none>           <none>
kafka-1       1/1     Running   0          19m   172.17.125.24   k8s-node02  <none>           <none>
zookeeper-0   1/1     Running   0          86m   172.27.14.246   k8s-node02   <none>           <none>  
zookeeper-1   1/1     Running   0          86m   172.27.14.247   k8s-node01   <none>           <none>  

二、缩容kafka和zookeeper：所谓副本数为1

### --- 缩容kafka副本数为2；在生产环境中，不可以使用2个副本数，
~~~     当前环境资源有限，只是为查看效果

[root@k8s-master01 kafka]# helm upgrade kafka -n public-service --set zookeeper.enabled=false --set replicaCount=1 --set externalZookeeper.servers=zookeeper .

### --- 缩容zookeeper

[root@k8s-master01 kafka]# helm upgrade zookeeper -n public-service --set replicaCount=1 --set auth.enabled=false --set allowAnonymousLogin=true .

### --- 查看缩容后结果

[root@k8s-master01 zookeeper-kafka]# kubectl get po -n public-service -owide
NAME          READY   STATUS    RESTARTS   AGE   IP              NODE         NOMINATED NODE   READINESS GATES
kafka-0       1/1     Running   0          19m   172.17.125.23   k8s-node01   <none>           <none>
zookeeper-0   1/1     Running   0          86m   172.27.14.246   k8s-node02   <none>           <none>  

---

 

 

 

 

 

 

 

 

 

---

Walter Savage Landor:strove with none,for none was worth my strife.Nature I loved and, next to Nature, Art:I warm'd both hands before the fire of life.It sinks, and I am ready to depart

                                                                                                                                                   ——W.S.Landor

---