Noisy Logging on Kubernetes RDS mysql client

[eahrold]

Task List

• Steps to reproduce provided
• Stacktrace (if present) provided
• Example that reproduces the problem uploaded to Github
• Full description of the issue provided (see below)

Expected Behaviour

Clients that do not expose anything in a running pod should not spam logs with Error messages

Actual Behaviour

KubernetesDiscoveryClient is spamming log with error message.

Environment Information

• Operating System: NA
• Micronaut Version: 1.2.0
• JDK Version: 8

Here is the full stack trace.

14:53:55.471 [nioEventLoopGroup-3-3] ERROR i.m.k.d.KubernetesDiscoveryClient - Error while trying to get Kubernetes Endpoints for the service [mysql] in the nam │
│ io.micronaut.http.client.exceptions.HttpClientResponseException: Not Found                                                                                       │
│     at io.micronaut.http.client.DefaultHttpClient$9.channelRead0(DefaultHttpClient.java:1657)                                                                    │
│     at io.micronaut.http.client.DefaultHttpClient$9.channelRead0(DefaultHttpClient.java:1594)                                                                    │
│     at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105)                                                            │
│     at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:374)                                                  │
│     at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:360)                                                  │
│     at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:352)                                                    │
│     at io.micronaut.http.netty.reactive.HandlerPublisher.channelRead(HandlerPublisher.java:434)                                                                  │
│     at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:374)                                                  │
│     at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:360)                                                  │
│     at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:352)                                                    │
│     at io.micronaut.http.netty.stream.HttpStreamsHandler.channelRead(HttpStreamsHandler.java:219)                                                                │
│     at io.micronaut.http.netty.stream.HttpStreamsClientHandler.channelRead(HttpStreamsClientHandler.java:180)                                                    │
│     at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:374)                                                  │
│     at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:360)                                                  │
│     at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:352)                                                    │
│     at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:102)                                                              │
│     at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:374)                                                  │
│     at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:360)                                                  │
│     at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:352)                                                    │
│     at io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelRead(CombinedChannelDuplexHandler.java:438)                      │
│     at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:328)                                                                │
│     at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:315)                                                                │
│     at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:429)                                                                     │
│     at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:283)                                                                    │
│     at io.netty.channel.CombinedChannelDuplexHandler.channelRead(CombinedChannelDuplexHandler.java:253)                                                          │
│     at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:374)                                                  │
│     at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:360)                                                  │
│     at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:352)                                                    │
│     at io.netty.handler.ssl.SslHandler.unwrap(SslHandler.java:1475)                                                                                              │
│     at io.netty.handler.ssl.SslHandler.decodeJdkCompatible(SslHandler.java:1224)                                                                                 │
│     at io.netty.handler.ssl.SslHandler.decode(SslHandler.java:1271)                                                                                              │
│     at io.netty.handler.codec.ByteToMessageDecoder.decodeRemovalReentryProtection(ByteToMessageDecoder.java:505)                                                 │
│     at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:444)                                                                     │
│     at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:283)                                                                    │
│     at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:374)                                                  │
│     at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:360)                                                  │
│     at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:352)                                                    │
│     at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1421)                                                         │
│     at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:374)                                                  │
│     at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:360)                                                  │
│     at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:930)                                                                  │
│     at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:163)                                                           │
│     at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:697)                                                                               │
│     at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:632)                                                                     │
│     at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:549)                                                                              │
│     at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:511)                                                                                              │
│     at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:918)                                                              │
│     at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)                                                                                 │
│     at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)                                                                     │
│     at java.lang.Thread.run(Thread.java:748)