I encounter the issue that I have a parameterized project with several string parameters, e.g., "VARIABLE_A", and that Jenkins doesn't know them anymore when executing a shell script in the Build section, i.e., there is simply no value.
This is very bizarre and I am convinced this should work using a string parameter (variable) in these ways:
"echo $VARIABLE_A"
"python3 $PATH/abc.py $VARIABLE_A"
...
but there is no values anymore.
echo-command does not print anything and the Python script misses the value as VARIABLE_A is apparently empty.
Perhaps someone has an idea ?
Thanks
Rainer
PS
Jenkins version is "2.277.2".
Related
I have a variable $svn_tag in a Jenkins job.
Its value is branches/sprint-77.
I want the output branches-sprint-77, but I didn't get any output.
I tried these two methods:
$svn_tag|tr "/" -
${svn_tag////-}
It is giving output in bash script, but it is not working in the Jenkins job.
What am I doing wrong?
Your first approach does not make sense, not the least because you try to run `$svn_tag´ as a command. Your second approach works for me:
svn_tag=branches/sprint-77
echo ${svn_tag////-}
prints branches-sprint-77.
For the safe side, you could also check your bash version, by doing a
echo bash=$BASH_VERSION
though I don't think that this feature is version-dependent. Mine is 4.4.12(3)-release.
Use code like below
${svn_tag.replaceAll('/', '-')}
I'm trying rerun a test n times on failure in Jenkins. I've seen Naginator, but my team would prefer not to add additional plugins.
(Note: we use EnvInject to inject environmental variables into the build process)
The next idea was to keep a variable with the number of times to retry, and decrement it on each new build. There was a stack overflow link (that I'm struggling to find at the moment) suggesting a groovy script that looks like this
def map = [:]
Int newRetries = RETRIES.toInteger() - 1
map.put(“RETRIES”, newRetries)
return map
However, groovy scripts in the "prepare an environment to run" section need admin privilages (which again my team would prefer to avoid).
The next idea was to use a property file and just do something along the lines of echo "RETRIES=$((RETRIES-1))" > env.properties and add an Inject Environmental variable step that reads in env.properties.
The problem is that within our Jenkins bash script echo "RETRIES=$((RETRIES-1))" prints "RETRIES=$((RETRIES-1))"
In a local terminal I can run
RETRIES=5
echo "RETRIES=$((RETRIES-1))"
> RETRIES=4
, but in Jenkins, RETRIES-1 doesn't get evaluated. Do any of you have an idea of why?
So I found 3 mistakes that I was making.
Jenkins pipelines execute a single step in parallel. This means you can't write to and read from a file in different portions of the same step without reading from the unupdated file (in practice) (From this stackoverflow Override environment variable created locally in Jenkins)
The default shell on Jenkins is /usr/bin/sh which isn't necessarily bash. I explicitly ran my script with bash -c "echo $Var" (the real issue here was that the remote machines were windows, oops)
My pipeline was failing before reading in the updated variable value from the file. I've moved the reading step earlier in the pipeline.
I'm trying to set up a Jenkins job that is parametrized with an svn revision number, called param.svn.revision, entered by a user.
During the execution, I want to launch a maven command like :
clean package -Dsvn.revision=$param.svn.revision
I tried a lot of thing instead of $param.svn.revision, like ${param.svn.revision}, "$param.svn.revision", "%param.svn.revision",... but nothing worked.
What have I to do to make it work ?
Thanks a lot,
Seb
Because this is an invalid shell expansion. Shell doesn't expect dots within variable names. You should remove the dots in the param name in order to successfully use it.
I've made freestyle Jenkins Job. In the configurations I've added Build step execute shell with simple command echo "HELLO WORLD". When I build the job this shell command I think is never executed.I got no HELLO WORLD output there are also no shell errors and such. Can you tell me possible reasons why this is happening.
What kind of shell are you using?
I've had the same kind of problem with tcsh - a command was never executed (not even echoed with the -x option). As it turned out, it was because there was no "newline" character after that command, and with tcsh that seems to be a problem.
I've pulled a few scripts into Jenkins for a proof of concept and think I'd like to move that direction for all of our scripts. Right now I keep an environment.rb file with my code (watir-webdriver, cucumber) which tells the script which environment we're testing and which browser to use (global variables). Jenkins fires off the script using rake.
I'd love to let the user choose the environment and browser through Jenkins 'choice' variable or similar, and then pass that to the script. While I see the framework in that for Jenkins and set up a choice list for environment, I'm having trouble determining what the next step is.
I could write to environment.rb, I could pass a variable to rake - I have many options for how to pass the information, I just need some assistance finding the first step to find the Jenkins way of accomplishing them. Google results and previous Stack questions weren't what I was looking for.
Thanks
Sure. Give the user either a text entry field a dropdown after telling Jenkins that this is a parameterized build. You'll give them a name, something like BuildEnvironment. Then when you call the build, you can pass these from the environment variables. For example, if you were using ANT, you'd add a line to the parameters that said environment = ${MyEnvironment} Jenkins will then pass the value along for your build tool to use.
There is a way to pass Jenkins Environment Variable to Ruby script. Please see the following example:
workspace_path = `echo $WORKSPACE`.strip # note the use of backticks
puts workspace_path
In the "echo $WORKSPACE".strip # the code work only if you replace quotes with backticks
This code example works in Jenkins on a Linux system.