# Helm 安装 MongoDB-分片集群

```bash
helm repo add stable https://kubernetes.oss-cn-hangzhou.aliyuncs.com/charts
helm repo add bitnami https://charts.bitnami.com/bitnami
helm repo update
```

### 安装分片集群

> 具有默认存储，如果没有存储，设置 persistence=false

```bash
helm upgrade \
--install mongodb-sharded bitnami/mongodb-sharded \
--namespace mongodb-sharded \
--create-namespace \
--set architecture=sharded \
--set shards=3 \
--set shardsvr.dataNode.replicaCount=1 \
--set shardsvr.dataNode.resources.requests.cpu=100m \
--set shardsvr.dataNode.resources.requests.memory=256Mi \
--set shardsvr.dataNode.resources.limits.cpu=4 \
--set shardsvr.dataNode.resources.limits.memory=6G \
--set configsvr.replicaCount=3 \
--set mongos.replicaCount=3 \
--set auth.rootPassword="123456" \
--set service.externalIPs[0]=172.30.10.86
```

• shards：设置分片的数量。

 • shardsvr.dataNode.replicaCount：设置每个数据节点角色的副本数量。

 • configsvr.replicaCount：设置配置服务器的副本数量。 

• mongos.replicaCount：设置路由器的副本数量。

 • auth.rootPassword: 由于验证是默认开启的, 这里必须设置密码, 管理员账号是root。 

• service.externalIPs: 暴露节点给外部调用

```bash
## K8S 内部链接
mongodb-sharded.mongodb-sharded.svc.cluster.local


## 获取密码
export MONGODB_ROOT_PASSWORD=$(kubectl get secret --namespace mongodb-sharded mongodb-sharded -o jsonpath="{.data.mongodb-root-password}" | base64 -d)


## 启动测试客户端
kubectl run --namespace mongodb-sharded mongodb-sharded-client --rm --tty -i --restart='Never' --image docker.io/bitnami/mongodb-sharded:8.0.4-debian-12-r2 --command -- mongosh admin --host mongodb-sharded --authenticationDatabase admin -u root -p $MONGODB_ROOT_PASSWORD

## K8S node 机器上本地转发测试
kubectl port-forward --namespace mongodb-sharded svc/mongodb-sharded 27017:27017 &
    mongosh --host 127.0.0.1 --authenticationDatabase admin -p $MONGODB_ROOT_PASSWORD

```


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