[Bug]: 是不是内置ETCD和外部ETCD都无法启用auth呀，我试了外部的也一样连不上

[chjohnhuang123456]

Is there an existing issue for this?

• I have searched the existing issues

Environment

- Milvus version:2.3.2
- Deployment mode(standalone or cluster): cluster-helm-deploy(cpu)
- MQ type(rocksmq, pulsar or kafka):    pulsar
- SDK version(e.g. pymilvus v2.0.0rc2):
- OS(Ubuntu or CentOS): centos
- CPU/Memory: 512G
- GPU: 
- Others:

Current Behavior

我用外部etcd配置：

externalEtcd:
  enabled: true
  ## the endpoints of the external etcd
  ##
  endpoints:
    - 10.140.177.73:2379
  user: "root"
  password: "Jxlz2020."

和helm内置配置：

auth:
  ## Role-based access control parameters
  ## ref: https://etcd.io/docs/current/op-guide/authentication/
  ##
  rbac:
    ## @param auth.rbac.enabled Switch to enable RBAC authentication
    ##
    enabled: true
    ## @param auth.rbac.allowNoneAuthentication Allow to use etcd without configuring RBAC authentication
    ##
    allowNoneAuthentication: true
    ## @param auth.rbac.rootPassword Root user password. The root user is always `root`
    ##
    rootPassword: "Jxlz2020."
    userName: "root"
    ## @param auth.rbac.existingSecret Name of the existing secret containing credentials for the root user
    ##
    existingSecret: ""
  ## TLS authentication for client-to-server communications
  ## ref: https://etcd.io/docs/current/op-guide/security/

其他微服务都连不上etcd，报错：

[2024/01/05 07:43:23.845 +00:00] [ERROR] [sessionutil/session_util.go:255] ["retry func failed"] ["retry time"=44] [error="etcdserver: user name is empty"] [stack="github.com/milvus-io/milvus/internal/util/sessionutil.NewSession\n\t/go/src/github.com/milvus-io/milvus/internal/util/sessionutil/session_util.go:255\ngithub.com/milvus-io/milvus/internal/distributed/rootcoord/client.NewClient\n\t/go/src/github.com/milvus-io/milvus/internal/distributed/rootcoord/client/client.go:57\ngithub.com/milvus-io/milvus/internal/distributed/datanode.NewServer.func1\n\t/go/src/github.com/milvus-io/milvus/internal/distributed/datanode/service.go:86\ngithub.com/milvus-io/milvus/internal/distributed/datanode.(*Server).init\n\t/go/src/github.com/milvus-io/milvus/internal/distributed/datanode/service.go:256\ngithub.com/milvus-io/milvus/internal/distributed/datanode.(*Server).Run\n\t/go/src/github.com/milvus-io/milvus/internal/distributed/datanode/service.go:188\ngithub.com/milvus-io/milvus/cmd/components.(*DataNode).Run\n\t/go/src/github.com/milvus-io/milvus/cmd/components/data_node.go:53\ngithub.com/milvus-io/milvus/cmd/roles.runComponent[...].func1\n\t/go/src/github.com/milvus-io/milvus/cmd/roles/roles.go:113"]
[2024/01/05 07:43:26.846 +00:00] [DEBUG] [sessionutil/session_util.go:246] ["Session try to connect to etcd"]
{"level":"warn","ts":"2024-01-05T07:43:26.847Z","logger":"etcd-client","caller":"v3@v3.5.5/retry_interceptor.go:62","msg":"retrying of unary invoker failed","target":"etcd-endpoints://0xc0002a56c0/10.140.177.73:2379","attempt":0,"error":"rpc error: code = InvalidArgument desc = etcdserver: user name is empty"}

Expected Behavior

在helm的milvus.yaml配置完用户名密码之后可以启用etcd auth

Steps To Reproduce

No response

Milvus Log

[2024/01/05 07:43:23.845 +00:00] [ERROR] [sessionutil/session_util.go:255] ["retry func failed"] ["retry time"=44] [error="etcdserver: user name is empty"] [stack="github.com/milvus-io/milvus/internal/util/sessionutil.NewSession\n\t/go/src/github.com/milvus-io/milvus/internal/util/sessionutil/session_util.go:255\ngithub.com/milvus-io/milvus/internal/distributed/rootcoord/client.NewClient\n\t/go/src/github.com/milvus-io/milvus/internal/distributed/rootcoord/client/client.go:57\ngithub.com/milvus-io/milvus/internal/distributed/datanode.NewServer.func1\n\t/go/src/github.com/milvus-io/milvus/internal/distributed/datanode/service.go:86\ngithub.com/milvus-io/milvus/internal/distributed/datanode.(*Server).init\n\t/go/src/github.com/milvus-io/milvus/internal/distributed/datanode/service.go:256\ngithub.com/milvus-io/milvus/internal/distributed/datanode.(*Server).Run\n\t/go/src/github.com/milvus-io/milvus/internal/distributed/datanode/service.go:188\ngithub.com/milvus-io/milvus/cmd/components.(*DataNode).Run\n\t/go/src/github.com/milvus-io/milvus/cmd/components/data_node.go:53\ngithub.com/milvus-io/milvus/cmd/roles.runComponent[...].func1\n\t/go/src/github.com/milvus-io/milvus/cmd/roles/roles.go:113"]
[2024/01/05 07:43:26.846 +00:00] [DEBUG] [sessionutil/session_util.go:246] ["Session try to connect to etcd"]
{"level":"warn","ts":"2024-01-05T07:43:26.847Z","logger":"etcd-client","caller":"v3@v3.5.5/retry_interceptor.go:62","msg":"retrying of unary invoker failed","target":"etcd-endpoints://0xc0002a56c0/10.140.177.73:2379","attempt":0,"error":"rpc error: code = InvalidArgument desc = etcdserver: user name is empty"}

Anything else?

No response

[github-actions]

The title and description of this issue contains Chinese. Please use English to describe your issue.

[xiaofan-luan]

/assign @smellthemoon
please help on this

[PowderLi]

related to #28895

[yanliang567]

/unassign

[stale]

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