Error while starting grails

Question

I am trying to work on grails through command prompt.

I am using the below versions:

| Grails Version: 3.2.3
| Groovy Version: 2.4.7
| JVM Version: 1.8.0_112

The following error is thrown:

| Error Error occurred running Grails CLI: This is usually a temporary error dur ing hostname resolution and means that the local server did not receive a respon se from an authoritative server (repo.grails.org) (Use --stacktrace to see the f ull trace)

Upon using stacktrace the following is displayed:

| Error Error occurred running Grails CLI: This is usually a temporary error dur ing hostname resolution and means that the local server did not receive a respon se from an authoritative server (repo.grails.org) (NOTE: Stack trace has been fi ltered. Use --verbose to see entire trace.)

java.net.UnknownHostException: This is usually a temporary error during hostname resolution and means that the local server did not receive a response from an a uthoritative server (repo.grails.org)

    at org.apache.http.impl.conn.SystemDefaultDnsResolver.resolve(SystemDefa

ultDnsResolver.java:45)

    at org.apache.http.impl.conn.DefaultClientConnectionOperator.resolveHost

name(DefaultClientConnectionOperator.java:278)

    at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnect

ion(DefaultClientConnectionOperator.java:162)

    at org.apache.http.impl.conn.ManagedClientConnectionImpl.open(ManagedCli

entConnectionImpl.java:294)

    at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(Default

RequestDirector.java:643)

    at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultReq

uestDirector.java:479)

    at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpCl

ient.java:906)

    at org.apache.http.impl.client.DecompressingHttpClient.execute(Decompres

singHttpClient.java:137)

    at org.eclipse.aether.transport.http.HttpTransporter.execute(HttpTranspo

rter.java:287)

    at org.eclipse.aether.transport.http.HttpTransporter.implGet(HttpTranspo

rter.java:243)

    at org.eclipse.aether.spi.connector.transport.AbstractTransporter.get(Ab

stractTransporter.java:59)

    at org.eclipse.aether.connector.basic.BasicRepositoryConnector$GetTaskRu

nner.runTask(BasicRepositoryConnector.java:447)

    at org.eclipse.aether.connector.basic.BasicRepositoryConnector$TaskRunne

r.run(BasicRepositoryConnector.java:350)

    at org.eclipse.aether.util.concurrency.RunnableErrorForwarder$1.run(Runn

ableErrorForwarder.java:67)

    at org.eclipse.aether.connector.basic.BasicRepositoryConnector$DirectExe

cutor.execute(BasicRepositoryConnector.java:581)

    at org.eclipse.aether.connector.basic.BasicRepositoryConnector.get(Basic

RepositoryConnector.java:249)

    at org.eclipse.aether.internal.impl.DefaultArtifactResolver.performDownl

oads(DefaultArtifactResolver.java:520)

    at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve(Defa

ultArtifactResolver.java:421)

    at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtif

acts(DefaultArtifactResolver.java:246)

    at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtif

act(DefaultArtifactResolver.java:223)

    at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.

loadPom(DefaultArtifactDescriptorReader.java:320)

    at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.

readArtifactDescriptor(DefaultArtifactDescriptorReader.java:217)

    at org.eclipse.aether.internal.impl.DefaultDependencyCollector.resolveCa

chedArtifactDescriptor(DefaultDependencyCollector.java:535)

    at org.eclipse.aether.internal.impl.DefaultDependencyCollector.getArtifa

ctDescriptorResult(DefaultDependencyCollector.java:519)

    at org.eclipse.aether.internal.impl.DefaultDependencyCollector.processDe

pendency(DefaultDependencyCollector.java:409)

    at org.eclipse.aether.internal.impl.DefaultDependencyCollector.processDe

pendency(DefaultDependencyCollector.java:363)

    at org.eclipse.aether.internal.impl.DefaultDependencyCollector.process(D

efaultDependencyCollector.java:351)

    at org.eclipse.aether.internal.impl.DefaultDependencyCollector.collectDe

pendencies(DefaultDependencyCollector.java:254)

    at org.eclipse.aether.internal.impl.DefaultRepositorySystem.resolveDepen

dencies(DefaultRepositorySystem.java:341)

    at org.springframework.boot.cli.compiler.grape.AetherGrapeEngine.resolve

(AetherGrapeEngine.java:302)

    at org.springframework.boot.cli.compiler.grape.AetherGrapeEngine.resolve

(AetherGrapeEngine.java:284)

    at org.springframework.boot.cli.compiler.grape.AetherGrapeEngine.resolve

(AetherGrapeEngine.java:276)

    at org.grails.cli.boot.GrailsDependencyVersions.<init>(GrailsDependencyV

ersions.groovy:53)

    at org.grails.cli.boot.GrailsDependencyVersions.<init>(GrailsDependencyV

ersions.groovy:49)

    at org.grails.cli.profile.repository.MavenProfileRepository.<init>(Maven

ProfileRepository.groovy:53)

    at org.grails.cli.GrailsCli.createMavenProfileRepository(GrailsCli.groov

y:333)

    at org.grails.cli.GrailsCli.execute(GrailsCli.groovy:234)

    at org.grails.cli.GrailsCli.main(GrailsCli.groovy:159)

| Error Error occurred running Grails CLI: This is usually a temporary error dur ing hostname resolution and means that the local server did not receive a respon se from an authoritative server (repo.grails.org)

Kindly help me resolve the above issue.

Answer 1

Most likely reason is your internet is not working or your are behind a proxy. See http://docs.grails.org/latest/guide/conf.html#proxyConfig for how to configure your proxy settings