Mads Nielsen added a comment - 2018-10-04 12:20 I'm having similar issues. I work at a corporation where access to the internet is closed down, so i need to remove the default lookup to use our own private mirrors.  For us, this results in the jobs timing out failing to download artifacts.

Devops Kanjer added a comment - 2020-07-14 14:42 The settings seemingly need to be added in the Jenkins main installation. We have put the grapeConfig.xml in the <jenkingshome>/.groovy directory and its being picked up.

Carlos Rodríguez López added a comment - 2021-03-18 15:37 - edited Alternatively, you can integrate private repos by using the `@GrabResolver` annotation see http://docs.groovy-lang.org/latest/html/documentation/grape.html#Grape-SpecifyAdditionalRepositories

Carlos Rodríguez López added a comment - 2021-03-18 16:56 Note: Jenkins Project does not longer recommend to use @grab. See https://www.jenkins.io/doc/book/pipeline/shared-libraries/#using-third-party-libraries https://github.com/jenkins-infra/jenkins.io/pull/3535 While possible, accessing third-party libraries using @Grab from trusted libraries has various issues and is not recommended. Instead of using @Grab, the recommended approach is to create a standalone executable in the programming language of your choice (using whatever third-party libraries you desire), install it on the Jenkins agents that your Pipelines use, and then invoke that executable in your Pipelines using the bat or sh step.

Carlos Rodríguez López added a comment - 2021-03-30 16:15 - edited Reproduction steps By following https://www.jenkins.io/doc/book/pipeline/shared-libraries/#using-third-party-libraries 1. Place Jenkins behind a proxy and blacklist the access to https://mvnrepository.com/ 2. Add the following Properties to the instance (I used squid proxy for the testing) http.proxyHost=squid-proxy.example.svc.cluster.local http.proxyPort=xxxx https.proxyHost=squid-proxy.example.svc.cluster.local https.proxyPort=xxxx ivy.settings.file=/ var /jenkins_home/.groovy/grapeConfig.xml 3. Upload https://mvnrepository.com/artifact/org.apache.commons/commons-math3/3.4.1 to your artifactory server repository (e.g. http://artifactory-oss.example.com/artifactory/my-repo-libs-release-local/ ) 4.- Create a Shared library Global Variable as follows @Grab( 'org.apache.commons:commons-math3:3.4.1' ) import org.apache.commons.math3.primes.Primes def isPrime( int count) { if (!Primes.isPrime(count)) { error "${count} was not prime" } else { echo "${count} is a prime" } } 5.- Then a Jenkinsfile library identifier: 'my-shared-libraries@master' , retriever: modernSCM( [$class: 'GitSCMSource' , remote: 'https: //github.com/my_org/my-jenkins-demos.git' ]) thirdPartyLib.isPrime 2 6.- Place the /var/jenkins_home/.groovy/grapeConfig.xml <?xml version= "1.0" encoding= "UTF-8" ?> <ivy-settings <settings defaultResolver= "downloadGrapes" /> <resolvers> <chain name= "downloadGrapes" > <ibiblio name= " public " m2compatible= " true " root= "http: //artifactory-oss.example.com/artifactory/my-repo-libs-release-local/" /> </chain> </resolvers> </ivy-settings> 7.- Run the build ... org.jenkinsci.plugins.workflow.cps.CpsCompilationErrorsException: startup failed: General error during conversion: Error grabbing Grapes -- [unresolved dependency: org.apache.commons#commons-math3;3.4.1: not found] java.lang.RuntimeException: Error grabbing Grapes -- [unresolved dependency: org.apache.commons#commons-math3;3.4.1: not found] at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) ... Workaround Use GrapeResolver @GrabResolver(name= 'artifactory' , root= 'http: //artifactory-oss.example.com/artifactory/my-repo-libs-release-local/' , m2Compatible= true ) @Grab( 'org.apache.commons:commons-math3:3.4.1' ) import org.apache.commons.math3.primes.Primes def isPrime( int count) { if (!Primes.isPrime(count)) { error "${count} was not prime" } else { echo "${count} is a prime" } }