Jenkins / Hudson environment variables

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I am running Jenkins from user jenkins thats has $PATH set to something and when I go into Jenkins web interface, in the System Properties window (http://$host/systemInfo) I see a different $PATH.

I have installed Jenkins on Centos with the native rpm from Jenkins website. I am using the startup script provided with the installation using sudo /etc/init.d/jenkins start

Can anyone please explain to me why that happens?

Michael,

Two things:

When Jenkins connects to a computer, it goes to the sh shell, and not the bash shell (at least this is what I have noticed - I may be wrong). So any changes you make to $PATH in your bashrc file are not considered.

Also, any changes you make to $PATH in your local shell (one that you personally ssh into) will not show up in Jenkins.

To change the path that Jenkins uses, you have two options (AFAIK):

1) Edit your /etc/profile file and add the paths that you want there

2) Go to the configuration page of your slave, and add environment variable PATH, with value: $PATH:/followed-by/paths/you/want/to/add

If you use the second option, your System Information will still not show it, but your builds will see the added paths.

Confluence Mobile, hudson.model.Environment public abstract class Environment extends Object. Represents Adds environmental variables for the builds to the given map. Couldn't you just add it as an environment variable in Jenkins settings: Manage Jenkins -> Global properties > Environment variables: And then click "Add" to add a property PATH and its value to what you need.

I kept running into this problem, but now I just add:

source /etc/profile

As the first step in my build process. Now all my subsequent rules are loaded for Jenkins to operate smoothly.

Environment (Jenkins core 2.241 API), Gets the platform for which these env vars targeted. static EnvVars · getRemote(​hudson.remoting.VirtualChannel channel). Obtains the environment variables of a  Creates environment variable override for launching child processes in this node. Whereas NodeProperty.setUp(AbstractBuild, Launcher, BuildListener) is used specifically for executing builds, this method is used for other process launch activities that happens outside the context of a build, such as polling, one time action (tagging, deployment, etc.)

You can also edit the /etc/sysconfig/jenkins file to make any changes to the environment variables, etc. I simply added source /etc/profile to the end of the file. /etc/profile has all all of the proper PATH variables setup. When you do this, make sure you restart Jenkins

/etc/init.d/jenkins restart

We are running ZendServer CE which installs pear, phing, etc in a different path so this was helpful. Also, we don't get the LD_LIBRARY_PATH errors we used to get with Oracle client and Jenkins.

EnvVars (Jenkins core 2.241 API), Builds up the environment variable map that's sufficient to identify a process as ours. EnvVars, Computer. getEnvironment(). Returns cached environment variables  In Jenkins, often we need to build up "environment variable overrides" on master, then to execute the process on agents. This causes a problem when working with variables like PATH.

I tried /etc/profile, ~/.profile and ~/.bash_profile and none of those worked. I found that editing ~/.bashrc for the jenkins slave account did.

Uses of Class hudson.EnvVars (Jenkins core 2.238 API), 1.2 Using Groovy/Java. To create global environment variable, we need to use below code. import hudson.EnvVars; import hudson.slaves. We use the getEnvironmentmethod that returns a hudson.EnvVarsobject. This is a Groovy map so we can already use the eachmethod to go over the keys and values. This however only seem to list the internal variables of Jenkins and for example PATHwas not in the list even though we can access it as env.PATH.

The information on this answer is out of date. You need to go to Configure Jenkins > And you can then click to add an Environment Variable key-value pair from there.

eg: export MYVAR=test would be MYVAR is the key, and test is the value.

Jenkins environment variables - Mukesh Singal, In Hudson, is it possible to reference environment variables inside a path to a test suite when configuring a Squish step? Yes, it is. Use the  I have a specific Global environment variables set in Hudson/Manage Hudson/Configure System/Global Properties, called TEST.. When I use a 'Free style' Hudson job with a Shell script, I can use ${TEST} in my shell command.

How to use environment variables inside Hudson paths, How to list the environment variables available to Jenkins Pipeline HUDSON_URL=http://localhost:8080/ JENKINS_HOME=/var/lib/jenkins  You can use Environment Injector Plugin to set environment variables in Jenkins at job and node levels. Below I will show how to set them at job level. From the Jenkins web interface, go to Manage Jenkins > Manage Plugins and install the plugin. Go to your job Configure screen

Jenkins Pipeline - set and use environment variables, I'm trying to make mu Jenkins evaluate a shell command and assign the output to an environment variable. Also, will it be possible to assign the  However, having Jenkins inject environment variables into a build job is a good way to learn about some of the underpinnings of the tool. It's definitely not a bad idea to have an intimate knowledge of the various entries in the Jenkins environment variables list, which is the focus of this continuous integration tutorial.

Set environment variables in Jenkins, Is there a package like "hudson.configuration.global" within the API which would allow me to change the environment variable within the global properties jenkins​  In jenkins pipeline there are lot of other useful environment variables which can be accessed during build execution. Most useful environment variables. Highly recommended to check out. env:

Comments
  • If you login as jenkins, and echo $PATH, does it match what you see in jenkins?
  • @Dave no, it doesnt match. can't understand why
  • The reason it doesn't match is because when you login as the jenkins user you're invoking a login shell, whereas jenkins just executes /bin/sh -xe {your script} so it doesn't run through the same set of scripts that alter the PATH environment variable. In fact, the set of scripts does vary according to the particular flavour of *nix and/or shell that you have installed. I've tested on AWS Linux AMI with jenkins and sadly none of /etc/profile /etc/profile.d/xxx.sh /etc/bashrc /etc/environment ~/.bash_profile ~/.profile ~/.bashrc were able to affect the PATH passed to /bin/sh
  • This answer worked for me, but I noticed that Jenkins is very sensitive about what you write into the configuration page. I couldn't get it to work with paths with spaces.
  • Yes it is, but when you enter paths with spaces in a UNIX shell, the space is normally escaped with a `` character. Therefore, if your path is "/opt/bin/My Folder Name", you may want to try "/opt/bin/My\ Folder\ Name" instead. This will escape the spaces and allow you to use them.
  • The solution 2 is the way to go.
  • Follow-up: on my Ubuntu system, the jenkins service is an upstart job, so I was modifying the old sysvinit stub script. Wrong place. When I tweak the /etc/init/jenkins.conf script, and update the PATH before it exec's java, that does seem to work.
  • There is a small dark corner: The jenkins master caches the environment variables from slaves in order to patch the customizations. So if you change environment variables on a slave (system or user), you need to restart the master to update the slaves config.
  • Huh? In detail, please... you add where? how? when? Does it work on Windows?
  • I assume you're running a shell command as part of your build. Put source /etc/profile as the first command in that Build > Execute Shell > Command textarea.