Jenkins not loading with correct config.xml file - jenkins

I am having a strange issue with my Jenkins (1.646) were by when I run;
Java -jar %~dp0jenkins.war% --httpPort=XXXX from the command line Jenkins runs and it seems to create a whole new instance under my user folder and doesn't read any files located under C:\.jenkins and importantly completely misses the;
config.xml file (located .jenkins)
Thankful for any help/pointers

I have managed to fix this issue by setting the environment variable JENKINS_HOME to c:\.jenkins.
When I then run the java -jar %~dp0jenkins.war%.... batch file it now correctly picks up the config.xml

Related

Jenkins MSBuild returns msb1009 "Project file does not exist"

I am trying to perform a .NET build with MSBuild in Jenkins on a Windows server, and no matter what I do, I get an error MSBUILD : error MSB1009: Project file does not exist.
The command being run correctly defines the name of the sln file, and I have even tried to define the full path to the file with %WORKSPACE%\project.sln, but neither fix the issue.
How can I resolve the problem?
The issue was the default workspace path defined by Jenkins on a Windows OS. It was placing the project files in a path like C:\Windows\System32\config\systemprofile\AppData\Local\Jenkins\.jenkins\workspace\RandomQuotes.
If I ran the MSBuild command from a command prompt specifying the sln file (either with a full or relative path, I got the same MSB1009 error.
If I ran the command without the sln file, I got the error Could not find a part of the path 'C:\Windows\System32\config\systemprofile\AppData\Local\Jenkins\.jenkins\workspace\RandomQuotes'.
I suspect the issue here is the path is too long. The solution was to edit the jenkins.xml file used to launch the Jenkins service and change the JENKINS_HOME environment variable to something like C:\JenkinsHome.

Are there any api's available to automate the "Apply new configuration" action in Jenkins Configuration as Code plugin

How can I apply a new Jenkins configuration as code YAML file from a groovy script, similar to clicking the "Apply new configuration" button in the UI.
I didn't try yet, but this looks as a feasible approach to me:
In the Jenkins home directory (/var/lib/jenkins on my Ubuntu installation) there is a file io.jenkins.plugins.casc.CasCGlobalConfig.xml. Edit that in order to provide a path/URL to your YAML file. On my system that file has the content like below, and I assume that just replacing the value of the <configurationPath> element with your yaml path should be sufficient.
<io.jenkins.plugins.casc.CasCGlobalConfig plugin="configuration-as-code#1569.vb_72405b_80249">
<configurationPath>/PATH/TO/MY/jenkins.casc.yaml</configurationPath>
</io.jenkins.plugins.casc.CasCGlobalConfig>
This configuration seems to be automatically applied each time when Jenkins is restarted.
In order to apply the configuration immediately, there seems to be jenkins-cli api for that. See the http://YOUR_JENKINS/manage/cli page and look for the reload-jcasc-configuration command, which suggests: java -jar jenkins-cli.jar -s http://YOUR_JENKINS/ -webSocket reload-jcasc-configuration
You ask for a "groovy script". With that I can't help, but I guess that modifying a file or running the jenkins-cli should be perfectly doable in a groovy script.

Jenkins workspace settings issues in Windows

I have the latest stable release of Jenkins 2.121.1 installed on my Windows10Pro(x64)-build machine.
Problem no 1:
I can't find the system-wide workspace settings as shown for instance in this thread:
How to change workspace and build record Root Directory on Jenkins?
Has this been removed? I only have the workspace settings available for the specific jobs, but I would like to change it on a system-wide-level.
Problem no 2:
When I configure the custom work space for a specific job like so:
It is supposed to use the name for the item that I've created. Instead it LITERALLY creates a folder with this name, like so:
Even though the jenkins documentation says I should use "${ITEM_FULL_NAME}", I've tried different variants (ITEM_FULLNAME) etc.
It looks like a bug
They mention Under the Advance Tab but I don't find it anywhere either.
Workaround
Modify the jenkins.xml directly
from
<env name="JENKINS_HOME" value="%BASE%"/>
to
<env name="JENKINS_HOME" value="newPath\Jenkins"/>
Considering the 2nd issue you can modify the config.xml
Or
You can set the env variable when you start the jenkins.war
SET JENKINS_HOME=new\Path\directory
SET ITEM_ROOTDIR=new\root\directory
java -jar jenkins.war
You will have to do this each time you start and stop the services

How to change workspace and build record Root Directory on Jenkins?

I would like Jenkins' data to be written to drive "E:" since this is the large drive on the server. Jenkins itself is installed on "C:".
How do I do that?
The default configuration that I saw is:
Workspace Root Directory: ${ITEM_ROOTDIR}/workspace
Build Record Root Directory: ${ITEM_ROOTDIR}/builds
Will the following changes help me achieve what I need?
Workspace Root Directory: E:/Jenkins/workspace
Build Record Root Directory: E:/Jenkins/builds/${ITEM_FULL_NAME}
In addition, what does "${ITEM_FULL_NAME}" mean?
I figured it out.
In order to save your Jenkins data on other drive you'll need to do the following:
Workspace Root Directory: E:\Jenkins\${ITEM_FULL_NAME}\workspace
Build Record Root Directory: E:\Jenkins\${ITEM_FULL_NAME}\builds
You can modify the path on the config.xml file in the default directory
<projectNamingStrategy class="jenkins.model.ProjectNamingStrategy$DefaultProjectNamingStrategy"/>
<workspaceDir>D:/Workspace/${ITEM_FULL_NAME}</workspaceDir>
<buildsDir>D:/Logs/${ITEM_ROOTDIR}/Build</buildsDir>
EDIT: Per other comments, the "Advanced..." button appears to have been removed in more recent versions of Jenkins. If your version doesn't have it, see knorx's answer.
I had the same problem, and even after finding this old pull request I still had trouble finding where to specify the Workspace Root Directory or Build Record Root Directory at the system level, versus specifying a custom workspace for each job.
To set these:
Navigate to Jenkins -> Manage Jenkins -> Configure System
Right at the top, under Home directory, click the Advanced... button:
Now the fields for Workspace Root Directory and Build Record Root Directory appear:
The information that appears if you click the help bubbles to the left of each option is very instructive. In particular (from the Workspace Root Directory help):
This value may include the following variables:
${JENKINS_HOME} — Absolute path of the Jenkins home directory
${ITEM_ROOTDIR} — Absolute path of the directory where Jenkins stores the configuration and related metadata for a given job
${ITEM_FULL_NAME} — The full name of a given job, which may be slash-separated, e.g. foo/bar for the job bar in folder foo
The value should normally include ${ITEM_ROOTDIR} or ${ITEM_FULL_NAME}, otherwise different jobs will end up sharing the same workspace.
The variables you need are explained here in the jenkins wiki: https://wiki.jenkins.io/display/JENKINS/Features+controlled+by+system+properties
The default variable ITEM_ROOTDIR points to a directory inside the jenkins installation. As you already found out you need:
Workspace Root Directory:
E:/myJenkinsRootFolderOnE/${ITEM_FULL_NAME}/workspace
Build Record Root Directory: E:/myJenkinsRootFolderOnE/${ITEM_FULL_NAME}/builds
You need to achieve this through config.xml nowerdays. Citing from the wiki page linked above:
This used to be a UI setting, but was removed in 2.119 as it did not
support migration of existing build records and could lead to
build-related errors until restart.
I would suggest editing the /etc/default/jenkins
vi /etc/default/jenkins
And changing the $JENKINS_HOME variable (around line 23) to
JENKINS_HOME=/home/jenkins
Then restart the Jenkins with usual
/etc/init.d/jenkins start
Cheers!
You can also edit the config.xml file in your JENKINS_HOME directory.
Use c32hedge's response as a reference and set the workspace location to whatever you want between the tags
By default, Jenkins stores all of its data in this directory on the file system.
There are a few ways to change the Jenkins home directory:
Edit the JENKINS_HOME variable in your Jenkins configuration file (e.g. /etc/sysconfig/jenkins on Red Hat Linux).
Use your web container's admin tool to set the JENKINS_HOME environment variable.
Set the environment variable JENKINS_HOME before launching your web container, or before launching Jenkins directly from the WAR file.
Set the JENKINS_HOME Java system property when launching your web container, or when launching Jenkins directly from the WAR file.
Modify web.xml in jenkins.war (or its expanded image in your web container). This is not recommended.
This value cannot be changed while Jenkins is running.
It is shown here to help you ensure that your configuration is taking effect.
If you go into Configure under Home there is a "Help" note on how to:
Home directory /var/lib/jenkins Help for feature: Home directory
By default, Jenkins stores all of its data in this directory on the file system.
There are a few ways to change the Jenkins home directory:
Edit the JENKINS_HOME variable in your Jenkins configuration file (e.g. /etc/sysconfig/jenkins on Red Hat Linux).
Use your web container's admin tool to set the JENKINS_HOME environment variable.
Set the environment variable JENKINS_HOME before launching your web container, or before launching Jenkins directly from the WAR file.
Set the JENKINS_HOME Java system property when launching your web container, or when launching Jenkins directly from the WAR file.
Modify web.xml in jenkins.war (or its expanded image in your web container). This is not recommended.
This value cannot be changed while Jenkins is running.
It is shown here to help you ensure that your configuration is taking effect.
def finder = new FileNameFinder()
def files = finder.getFileNames '\\pkg\\stage\\', '*.sln'
echo "$files"
jenkins is serching file in /var/lib/jenkins/pkg/stage
it is automatically adding /var/lib/jenkins path before

Jenkins losing configuration

I downloaded the jenkins war and su into the jenkins user and ran the following command
java -jar jenkins.war
I setup the configuration and when I rebooted the computer and loaded it up, all the configuration was gone. I checked the /home/jenkins/.jenkins and all the directories appear to be there. Looking at the system info section in jenkins I see the home directory set right
HOME /home/jenkins
Thoughts?
Ok I figured it out. I just had to as the jenkins user export the JENKINS_HOME variable and that did it

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