I want to set up a Job in Jenkins. Before start of the build we have file (.xyz)from which we set up our env variables required for the build.
Manually build works fine but when i try to run that file inside the jenkins shell it doesnt set up any env variables. is there a way to achieve this?
Thanks
It does set it, however:
You cannot see it outside of Jenkins (these changes are transient)
They only last for the duration of that Execute Shell that set them, and any other build/post-build step won't have them.
This is by design, this is how Jenkins maintains a clean environment that doesn't effect the rest of the machine.
To be able to set them, and retain them between build steps, you need EnvInject plugin.
Using that plugin, you can configure environment variables (either manually, through script, or through a file), and this can be done at various intervals, such as before the SCM checkout, as a build step, etc.
Related
I'm searching for a way to execute automatically a global configured script BEFORE a Jenkins job will be started.
My use case is, all Jenkins jobs are only allowed to start if a specific environment variable is set.
If a variable is not set, the build should be aborted.
I found the Global Post Plugin https://wiki.jenkins.io/display/JENKINS/Global+Post+Script+Plugin, i only need the oposite what this Plugin does.
Maybe there's another solution?
I needed to chmod my /data/jenkins/.npm and /data/jenkins/.sbt directories before running all my builds.
I could either add a prebuild step to every job (redundant and messy) or I could go under Manage Jenkins -> Configure System.
We have a Cloud -> Amazon EC2 configuration section with "Init script" - you can add what you want to run there on slave startup.
However, if you really want something to run something for every job (not enough to run on jenkins slave startup) then you probably don't want to manually configure it for each job.
I suggest you look into Jenkins DSL as you can define preBuildSteps section on any/all job(s) which can then reference a common snippet (eg. a shell script to run).
Partial Solution:
Take a look at the Global Pre Script plugin. This plugin is less feature-rich than the Global Post Script plugin, but it should do at least a part of what you want. It notably lacks the option to abort the build, but it is able to manipulate parameters or other preconditions that your jobs rely on. You may also be able to submit a PR to add some means of preventing the build from executing.
Some options:
Modify Global Pre Script to be able to cleanly abort the build from groovy.
Change your existing jobs to check for a precondition (manually or via script). This not the most scalable option.
Replace your existing jobs with Pipeline jobs and use Shared Libraries to bottleneck the logic. (This is what I do).
Generate your jobs using the Job DSL Plugin and enforce a pre build step in every generated job. (This is what I also do)
Limitations:
Something to keep in mind for both global plugins: neither plugin provides a proper build step. The groovy code executes on the master.
One use case that neither plugin will handle is a between-job slave cleanup/sanity check.
i have a little problem.
Our setup consists of 1 Master Jenkins and 2 Slaves, both Slaves use a different SVN Location String, which we saved in an Environment Variable... but both of them start the same .dll for a Test - Now my problem is that when i use %SVN_Location% that it takes the Environment Variables from the computer i run the build (the master).
So my question is there a way to tell him somehow to execute the %SVN_Location% not on the computer where the build starts, but on the computer where the slave runs
Use EnvInject to record the value you want to file
Use Copy To Slave to move the file to slave
User EnvInject on slave to load value to environment variables, before the SCM step
I managed it myself after some more Research to actually get the Environment Variable directly from the Slave and use it as a Parameter for the Master Node.
With the Plugin Dynamic Parameter by using a Dynamic Parameter and the Default Value Script: System.getenv("SVN_Location_TP1") and the checkbox Remote Script checked.
When starting the build with parameters now, it automatically loads via remote script the Environment Variable from the slave and uses it as a parameter for the jenkins execution, which can be used with %SVN_Location_TP1% (in my example)
I have a Jenkins pipeline view. Say for example the first job is BUILD followed by DEPLOY and TEST job. What I'm trying to achieve here is to have a 'rollback logic' in the test job, meaning when the test job is run and it is successful I want to set current build no as a global environment variable (so that I can potentially access build number from any job) possibly called TESTED_BUILD_NO. But if test fails then I want to trigger DEPLOY job by passing TESTED_BUILD_NO which will deploy last test build.
There is a plugin called promotion builds plugin, it mentions PROMOTION_BUILD_NO variable but when I look at /env-vars.html it is not listed there. I tired looking at api/xml as well but no mention of any promotion variables. Can this logic I mention here be achieved using this plugin? If not how is global environment set and accessed in Jenkins?
Instead of using global variables, you can always use lastStableBuild, which is automatically set by jenkins. In DEPLOY job, use link to lastStableBuild from TEST job, which form is : http://JENKINS_ADDRESS/job/JENKINS_JOB/lastStableBuild/
According to jenkins wiki:
Stable build A build is stable if it was built successfully and no publisher reports it as unstable.
You are best advised to manage global variables from the system management screens:
Manage Jenkins -> Configure System -> Global Properties
Much more reliable compared to setting these externally to Jenkins.
this can be changed using script or via execute shell/batch.
Or you can use simple groovy scrip to change the value based on Previous command/build status.
I have a grails app that depends on a custom grails plugin. In Jenkins, I want the release build for the app to depend on the latest promoted release build of the plugin. So, I thought I'd put a conditional in the BuildConfig.groovy to use an environment variable that has that value. So now I need a way to set an environment variable in Jenkins to the latest build number of that other job. Is there a way to do that?
If you can do the envisioned workflow manually (e.g. going into the main configuration and change a environment variable there), then you should be able to automate it using the Jenkins Command Line Interface. However, you can not directly change an environment variable in one job and read that changed value in another job.
I am making use of a batch script that is supposed to run on a slave node, which makes use of Sahi. The environment variable for Sahi is set as 'SAHI_HOME' on the node.
When I run the batch I figure out, it is not able to locate Sahi classes.
How do I enforce Jenkins to make use of environment variables set on the slave? I mean is there any way to fetch environment variables set on a slave node?
We got around this issue by installing and updating Sahi automatically. There is a nice Jenkins Plugin: https://wiki.jenkins-ci.org/display/JENKINS/Custom+Tools+Plugin
You just need to place a Sahi Zip somewhere for Jenkis to access. The custom tool plugin automatically unpacks archives and creates a toolname_HOME environment variable.
Just name your tool SAHI and you have Sahi and $SAHI_HOME on every job and node you need.
Regards
Wormi
I ran into a similar issue with my AIX slaves. The issue is that the .profile file is not executed when a non-interactive shell is started. Therefore, you have several options.
Make sure that the environment variable is set in the environment file (in AIX, I can set the ENV variable to a filename that will be executed for both interactive and non-interactive shells.) I think the .kshrc file might qualify too.
Set the environment variable in the node configuration
set the environment variable in the master configuration
set the environment variable in the job (needs env inject plugin)
set the environment variable explicitly in the bash script