How to use environment variable in Jenkins Pipeline build?

[ZillaYT]

I have a Jenkins Pipeline job which uses "Pipeline script from SCM" as my
pipeline. One of this block's parameters is "Branch to build" of course.
How can I used an environment variable for the text block? I tried, for
example , $branchToBuild, ${branchToBuild} or "${branchToBuild}" and it
just takes those as literal values and does not extrapolate the string. I
do have that variable defined and use it in other jobs.

Is it just not possible to do this?

[ZillaYT]

Someone suggested using ${env.branchToBuild}, so I tried env.branchToBuild,
$env.branchToBuild, ${env.branchToBuild}, and "${env.branchToBuild}" all to
NO avail.

Post by ZillaYT
I have a Jenkins Pipeline job which uses "Pipeline script from SCM" as my
pipeline. One of this block's parameters is "Branch to build" of course.
How can I used an environment variable for the text block? I tried, for
example , $branchToBuild, ${branchToBuild} or "${branchToBuild}" and it
just takes those as literal values and does not extrapolate the string. I
do have that variable defined and use it in other jobs.
Is it just not possible to do this?

[Cuong Tran]

Where do you define your "environment variable"?

It should work as ${BRANCH_TO_BUILD} if you define BRANCH_TO_BUILD under
global environment variables, folder, inside your pipeline, etc.

Post by ZillaYT
Someone suggested using ${env.branchToBuild}, so I tried env.branchToBuild,
$env.branchToBuild, ${env.branchToBuild}, and "${env.branchToBuild}" all
to NO avail.

Post by ZillaYT
I have a Jenkins Pipeline job which uses "Pipeline script from SCM" as my
pipeline. One of this block's parameters is "Branch to build" of course.
How can I used an environment variable for the text block? I tried, for
example , $branchToBuild, ${branchToBuild} or "${branchToBuild}" and it
just takes those as literal values and does not extrapolate the string. I
do have that variable defined and use it in other jobs.
Is it just not possible to do this?

[ZillaYT]

It should work, but doesn't!

I define my environment variable in Manage Jenkins->System Configuration,
Global Properties, Environment variables. I use the variable in other jobs
so I know the variable definition works!

Thanks.

Post by Cuong Tran
Where do you define your "environment variable"?
It should work as ${BRANCH_TO_BUILD} if you define BRANCH_TO_BUILD under
global environment variables, folder, inside your pipeline, etc.

Post by ZillaYT
Someone suggested using ${env.branchToBuild}, so I tried env.branchToBuild,
$env.branchToBuild, ${env.branchToBuild}, and "${env.branchToBuild}" all
to NO avail.

Post by ZillaYT
I have a Jenkins Pipeline job which uses "Pipeline script from SCM" as
my pipeline. One of this block's parameters is "Branch to build" of course.
How can I used an environment variable for the text block? I tried, for
example , $branchToBuild, ${branchToBuild} or "${branchToBuild}" and
it just takes those as literal values and does not extrapolate the string.
I do have that variable defined and use it in other jobs.
Is it just not possible to do this?

[ZillaYT]

Just to be clear, this is the text box in the job configuration page where
I want to use an environment variable.

[image: Screen Shot 2018-11-08 at 1.37.35 PM.png]

Post by ZillaYT
It should work, but doesn't!
I define my environment variable in Manage Jenkins->System Configuration,
Global Properties, Environment variables. I use the variable in other jobs
so I know the variable definition works!
Thanks.

Post by Cuong Tran
Where do you define your "environment variable"?
It should work as ${BRANCH_TO_BUILD} if you define BRANCH_TO_BUILD under
global environment variables, folder, inside your pipeline, etc.

Post by ZillaYT
Someone suggested using ${env.branchToBuild}, so I tried env.branchToBuild,
$env.branchToBuild, ${env.branchToBuild}, and "${env.branchToBuild}"
all to NO avail.

Post by ZillaYT
I have a Jenkins Pipeline job which uses "Pipeline script from SCM" as
my pipeline. One of this block's parameters is "Branch to build" of course.
How can I used an environment variable for the text block? I tried, for
example , $branchToBuild, ${branchToBuild} or "${branchToBuild}" and
it just takes those as literal values and does not extrapolate the string.
I do have that variable defined and use it in other jobs.
Is it just not possible to do this?

[Mark Waite]

That's a good clarification. I believe there is a known bug that the git
plugin does not expand variable references in some of the configuration
fields.

Use a multibranch Pipeline instead, then you can let the Pipeline script
expand the variable, and you won't have a confusing mix of changes in the
history of the job.

Mark Waite

Post by ZillaYT
Just to be clear, this is the text box in the job configuration page where
I want to use an environment variable.
[image: Screen Shot 2018-11-08 at 1.37.35 PM.png]

Post by ZillaYT
It should work, but doesn't!
I define my environment variable in Manage Jenkins->System Configuration,
Global Properties, Environment variables. I use the variable in other jobs
so I know the variable definition works!
Thanks.

Post by Cuong Tran
Where do you define your "environment variable"?
It should work as ${BRANCH_TO_BUILD} if you define BRANCH_TO_BUILD under
global environment variables, folder, inside your pipeline, etc.

Post by ZillaYT
Someone suggested using ${env.branchToBuild}, so I tried env.branchToBuild,
$env.branchToBuild, ${env.branchToBuild}, and "${env.branchToBuild}"
all to NO avail.

Post by ZillaYT
I have a Jenkins Pipeline job which uses "Pipeline script from SCM" as
my pipeline. One of this block's parameters is "Branch to build" of course.
How can I used an environment variable for the text block? I tried, for
example , $branchToBuild, ${branchToBuild} or "${branchToBuild}" and
it just takes those as literal values and does not extrapolate the string.
I do have that variable defined and use it in other jobs.
Is it just not possible to do this?

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[ZillaYT]

I got it answered in stackoverflow How to use environment variables in a
Jenkins pipeline job?
<https://stackoverflow.com/questions/53212940/how-to-use-environment-variables-in-a-jenkins-pipeline-job> I
just had to uncheck the "Lightweight checkout" box at the bottom of that
block, and it worked!

Thanks!

Post by Mark Waite
That's a good clarification. I believe there is a known bug that the git
plugin does not expand variable references in some of the configuration
fields.
Use a multibranch Pipeline instead, then you can let the Pipeline script
expand the variable, and you won't have a confusing mix of changes in the
history of the job.
Mark Waite

Post by ZillaYT
Just to be clear, this is the text box in the job configuration page
where I want to use an environment variable.
[image: Screen Shot 2018-11-08 at 1.37.35 PM.png]

Post by ZillaYT
It should work, but doesn't!
I define my environment variable in Manage Jenkins->System
Configuration, Global Properties, Environment variables. I use the variable
in other jobs so I know the variable definition works!
Thanks.

Post by Cuong Tran
Where do you define your "environment variable"?
It should work as ${BRANCH_TO_BUILD} if you define BRANCH_TO_BUILD
under global environment variables, folder, inside your pipeline, etc.

Post by ZillaYT
Someone suggested using ${env.branchToBuild}, so I tried env.branchToBuild,
$env.branchToBuild, ${env.branchToBuild}, and "${env.branchToBuild}"
all to NO avail.

Post by ZillaYT
I have a Jenkins Pipeline job which uses "Pipeline script from SCM"
as my pipeline. One of this block's parameters is "Branch to build" of
course. How can I used an environment variable for the text block? I tried,
for example , $branchToBuild, ${branchToBuild} or "${branchToBuild}"
and it just takes those as literal values and does not extrapolate the
string. I do have that variable defined and use it in other jobs.
Is it just not possible to do this?

--

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<https://groups.google.com/d/msgid/jenkinsci-users/264ef2d4-3b6e-471c-8d98-40bc1e16496b%40googlegroups.com?utm_medium=email&utm_source=footer>
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For more options, visit https://groups.google.com/d/optout.

--
Thanks!
Mark Waite