learnk8s / knote-java Goto Github PK

com.mongodb.MongoSocketOpenException: Exception opening socket
Caused by: java.net.ConnectException: Connection refused (Connection refused)

Spring Boot recently yet again introduced a breaking change, which leads to the infamous whitelabel error page. They changed the default suffix from .ftl to .ftlh.

spring-projects/spring-boot#15131

So for Spring Boot 2.2.x applications, these extensions have to be updated.

I have been looking for an Microservice example that uses docker and kubernetes with minikube.

Working through this example I am stuck trying to run the microservice. The docker containers start up and run for mongodb and knote but the microservice always fails to connect with following exception:

Minio Reconnect: true
java.net.ConnectException: Failed to connect to localhost/127.0.0.1:9000
at okhttp3.internal.connection.RealConnection.connectSocket(RealConnection.java:265)
at okhttp3.internal.connection.RealConnection.connect(RealConnection.java:183)
at okhttp3.internal.connection.ExchangeFinder.findConnection(ExchangeFinder.java:224)
at okhttp3.internal.connection.ExchangeFinder.findHealthyConnection(ExchangeFinder.java:108)
at okhttp3.internal.connection.ExchangeFinder.find(ExchangeFinder.java:88)
at okhttp3.internal.connection.Transmitter.newExchange(Transmitter.java:169)
at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:41)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:117)
at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:94)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:117)
at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142)
at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:88)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:117)
at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:229)
at okhttp3.RealCall.execute(RealCall.java:81)
at io.minio.MinioClient.executeReq(MinioClient.java:1111)
at io.minio.MinioClient.execute(MinioClient.java:1070)
at io.minio.MinioClient.updateRegionCache(MinioClient.java:1219)
at io.minio.MinioClient.getRegion(MinioClient.java:1264)
at io.minio.MinioClient.executeHead(MinioClient.java:1312)
at io.minio.MinioClient.bucketExists(MinioClient.java:3286)
at io.learnk8s.demo.KNoteController.initMinio(KnoteJavaApplication.java:169)
at io.learnk8s.demo.KNoteController.init(KnoteJavaApplication.java:118)

This is probably a configuration issue on my end but I am unable to determine why this is happening and how to the resolve it. Perhaps related to localhost and a difference between 127.0.0.1 and 0.0.0.0?

My docker image is deployed:
knote-java latest ce9109e6c6df About an hour ago 393MB

Mongodb is running in a docker container:
2020-06-02T01:04:34.139+0000 I NETWORK [listener] Listening on 0.0.0.0
2020-06-02T01:04:34.139+0000 I NETWORK [listener] waiting for connections on port 27017

docker ps looks right too:
docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
c7b4df5e8318 knote-java "/bin/sh -c 'exec ja…" 32 seconds ago Up 30 seconds 0.0.0.0:8080->8080/tcp knote-java
23d5ed2a1fc5 mongo "docker-entrypoint.s…" 2 minutes ago Up 2 minutes 27017/tcp mongo
482ae31f5632 gcr.io/k8s-minikube/kicbase:v0.0.10 "/usr/local/bin/entr…" 6 days ago Up 4 minutes 127.0.0.1:32787->22/tcp, 127.0.0.1:32786->2376/tcp, 127.0.0.1:32785->5000/tcp, 127.0.0.1:32784->8443/tcp minikube

Any assistance is greatly appreciated. Thank you.

I try to upload the image.

Image is uploaded into /tmp/uploads (local dir). But the Image on markdown doesn't show.

Reported from a student:

in the first course (java example), to make templates working i had to add 
spring.freemarker.template-loader-path: classpath:/templates
spring.freemarker.suffix: .ftl
to application.properties otherwise i got 404 in the browser. 

FYI @salaboy