devkanro edited a comment on issue #5349:
URL: https://github.com/apache/skywalking/issues/5349#issuecomment-679808855
After some debug, I found the cause of the bug.
The Jetcd Client builder will use `ClientConnectionManager` to build
`ManagedChannel` with `SmartNameResolverFactory`.
When the authority has not been set, SmartNameResolverFactory will be
initialized with an empty string authority.
```Java
// io.etcd.jetcd.ClientConnectionManager
channelBuilder.nameResolverFactory(
forEndpoints(
Util.supplyIfNull(builder.authority(), () -> ""),
builder.endpoints(),
Util.supplyIfNull(builder.uriResolverLoader(),
URIResolverLoader::defaultLoader)));
```
\>\> @beiwangnull
you can set the value of authority explicitly to avoid the bug for now.
```Kotlin
val client = Client.builder()
.sslContext(context)
.endpoints("http://server-host:2712";)
.authority("etcd") // Must be a SAN in server cert if
<server-host> is not in cert
.build()
```
Reference: etcd-io/jetcd#55, etcd-io/jetcd#652, grpc/grpc-java#2662
\>\> @wu-sheng
We need to discuss how we do if we can't get authority from
`ManagedChannel`, the name resolver could override the original value of
authority.
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