Category: Jenkins

Slack notifications in Jenkins

 

One of the most important things in Jenkins is the ability to being extended by plugins. Jenkins is an Open Source project, so we can see what happens inside, and we can not only contribute to the Jenkins core but also create our own plugins. But the popularity of Jenkins causes that many functionalities that we would like to implement, have been already developed! This situation we have with Slack – if we want Slack notifications in Jenkins, then we can just use a Slack plugin! When I’m writing this post, the Slack plugin is actively maintained. Why should I Continue reading

Ansible-vault password in Jenkins

 

Ansible is one of my favorite tools. I use them for almost everything – system configuration, servers provisioning, serverless services provisioning and even for calling API that hasn’t its own Ansible module. You can do everything with Ansible! Moreover, you can also use Jenkins to run Ansible. I’m very glad that it’s possible and I use that possibility as often as possible. Of course, only if it makes sense. Also, I’m sure that it’s normal practice, as somebody develops an Ansible plugin for Jenkins. Anyway, one of the very, very important Ansible’s feature is ansible-vault, that allows to encrypt sensitive Continue reading

How to pass credentials to Jenkins pipeline

 

Working with sensitive data is a hard thing nowadays. Especially in a DevOps methodology. New tools and ways of solving problems don’t make it easier. Well, for some reasons, DevSecOps came to life. Almost all systems need some type of credentials – password, API tokens, keys, certificates and so on. In Infrastructure as a Code, Configuration as a Code and other approaches like these mentioned, working with git repositories is necessary. But it’s a very bad practice to store credentials in a plain text. I hope that I don’t need to explain why. Luckily, most of the mature tools have Continue reading

Retry failed build in Jenkins

 

Failing build is not what we want to have in out Jenkins, but it happens sometimes. Not always it means that something “went terribly wrong”, but it can be a temporary problem in communication with the code repository or another, not dangerous error. In such cases, it would be great if the build could be retried in an automated way. It’s possible and very simple to implement with Jenkins. Moreover, we don’t need to create a complex configuration. Everything we need is just a plugin – Retry Failed Builds plugin. There are a lot of helpful plugins in Jenkins, and Continue reading

How to set a constant in Jenkins DSL

 

Working with the Jenkins DSL configuration is quite easy. But we need to remember about best practices and do some work for ourselves. Just to simplify out live. One of these things is creating good code. We should extract repeating code blocks and use them in different places. Let’s assume, that we want to create granular permissions – Alice has permissions only for Job A, but Bob has permissions for both, Job A and Job B. As you see, we have now two jobs and two users. But we don’t know when we will have to add more users. And Continue reading

Jenkins DSL Authorization Matrix loop

 

Authorization Matrix is one of my favorite Jenkins functionality. It allows managing permissions per Project what gives enough granularity. But when you have a lot of Projects, you can find Jenkins DSL Plugin very helpful. Especially when you start your adventures with Jenkins, those two plugins can make your life easier. As you use Jenkins, I suppose you are in love with automation. You try to automate and optimize everything. And if you read this post, it’s more than certain that you faced the same problem I had faced in my work. How to create a Jenkins DSL Authorization Matrix Continue reading

Jenkins Job DSL Playground – how it works

 

Working with Jenkins Job DSL code sometimes is a pain in the neck. Especially if you have very big and complex scripts. You can make a mistake very quickly, so it would be great if there could be a way to test your code before the seed deployment. Of course, you can test your DSL scripts outside of Jenkins, but sometimes you don’t need to run the whole bunch of tests, right? You just want to check only the small part of your code… What if I tell you that you can do that? Ladies and gentleman, let me introduce Continue reading

Jenkins Job DSL Playground Docker image

 

I have been using Jenkins Job DSL Playground since I realized that DSL is the best option for managing Jenkins jobs. If you have a lot of them, changing anything can be very painful without any automation. Jenkins DSL Plugin allows transforming configuration into the code and store that in the Git repository. But, you know, sometimes changes are very complex and you can make a mistake, hence I needed something that helps me. And I found it – Jenkins Job DSL Playground. It was obvious for me, that I can also use a docker image, but I couldn’t find Continue reading

Jenkins – unable to resolve class utilities.MyUtilities

 

It’s more than likely, you start trying to import external classes/files if you use Jenkins Job DSL Plugin. When your jobs grow to tens or hundreds of projects, some code will be common in some places. So, you will read the documentation, check the community forums, try to find out the best way to simplify your life. And you find it. You will find very quickly, that you can import classes from external files. Jenkins DSL uses Groovy, and Groovy is based on Java, after all, so it’s not a surprise. After you find that information you will try to Continue reading

Jenkins build priority

 

Jenkins has many ways of managing the job queues. We can add a static slave node, use the plugin which creates temporary nodes or just add more workers to the existing servers. But sometimes we need something else. We need a possibility to set the priority of the job. It’s not possible with additional workers or nodes, hence we should use the other way. And Priority Sorter Plugin can solve our problem. Very quickly and easy, trust me. From now, Jenkins build priority will not have any secrets! Jenkins build priority? For what?! Let’s assume such situation: We have a Continue reading