1. Overview
Jenkins is an automation tool that helps developers with software development cycles. Additionally, Jenkins can automate the testing and deployment of applications using pipelines. Sometimes, while using Jenkins pipelines, we may encounter the “No such DSL method” error. Jenkins throws this error when it doesn’t recognize the method or syntax we used in our Jenkinsfile.
In this tutorial, we’ll explore all the cases of the “No such DSL method” error and its possible solutions.
2. Typo Error
One common cause of this error is a typo in our Jenkinsfile. If we type a method or syntax incorrectly, Jenkins won’t be able to recognize it and will throw the “No such DSL method” error. To illustrate, let’s look at an example of getting the “No such DSL method” error:
pipeline {
agent any
stages {
stage('Build') {
steps {
mvn 'clean instal'
}
}
}
}As in the above script, we can see we’ve made a typo error in the mvn command “mvn clean instal”. In order to fix this error, we just need to fix the typo in the Maven command:
pipeline {
agent any
stages {
stage('Build') {
steps {
mvn 'clean install'
}
}
}
}In this case, we can see the issue resolved with the typo correction. Moreover, we should always double-check the syntax and method names in our Jenkinsfile.
3. Other Possible Reasons
The Jenkins Pipeline is constantly evolving, and the new Jenkins versions bring new methods and functions. We can face this problem when some of the methods and functions in the script are no longer supported on newer versions. To resolve this error, we can check the spelling of the method name. In addition, we can check the documentation of the Jenkins Pipeline DSL to verify if the method called is a valid method. Also, make sure that the necessary plugin is installed.
3.1. Missing Dependency
The Jenkins Pipeline provides various methods and syntax that require additional dependencies and plugins. We face this “No such DSL method” error if a method or syntax is required in the script and its dependency isn’t available. However, this issue can be resolved by installing the appropriate plugin or library.
3.2. Outdated Jenkins Version
The outdated version of Jenkins can also cause the “No such DSL method” error. However, we can resolve this error by upgrading Jenkins to the latest version. Upgrading Jenkins will also give us access to the latest features and improvements in the Jenkins Pipeline DSL.
3.3. Outdated Syntax
The Jenkins Pipeline DSL is widely used, and old syntax may no longer be supported. If we use an old version of the Jenkinsfile, we may encounter the “No such DSL method” error. To fix this issue, update the Jenkinsfile and use the latest syntax.
As a last resort, we can run the Jenkinsfile with the -X flag, which will enable debugging output. In this way, we’ll be able to gain more insight into the error and identify the root cause.
4. Conclusion
In this article, we’ve learned how to fix the “No such DSL method” error in Jenkins Pipeline. First, we looked at the causes of the error. After that, we provided possible solutions to it.
In short, we explored both the causes and solutions to the “No such DSL method” error in the Jenkins pipeline.
We can find the script for the typo fix pipeline over on GitHub.