Openshift container as root user - jenkins

Question

Hi Iam working on CICD implementation on openshift 3.9. I have a jenkins pod running in openshift. Iam running selenium scripts in jenkins and below is the error which iam getting like missing a package
Running TestSuite
/var/lib/jenkins/jobs/Pipeline/workspace/src/test/resources/chromedriver: error while loading shared libraries: libgconf-2.so.4: cannot open shared object file: No such file or directory
Nov 21, 2018 8:25:36 AM org.openqa.selenium.os.OsProcess checkForError
SEVERE: org.apache.commons.exec.ExecuteException: Process exited with an error: 127 (Exit value: 127)
Tests run: 8, Failures: 1, Errors: 0, Skipped: 7, Time elapsed: 21.9 sec <<< FAILURE! - in TestSuite
BrowserSettings(SecurityCheckList) Time elapsed: 21.273 sec <<< FAILURE!
org.openqa.selenium.WebDriverException: Timed out waiting for driver server to start.
Build info: version: '3.9.1', revision: '63f7b50', time: '2018-02-07T22:25:02.294Z'
System info: host: 'jenkins-1-7zgld', ip: '10.131.0.32', os.name: 'Linux', os.arch: 'i386', os.version: '3.10.0-957.el7.x86_64', java.version: '1.8.0_181'
Driver info: driver.version: ChromeDriver
at java.util.concurrent.FutureTask.get(FutureTask.java:205)
at com.google.common.util.concurrent.SimpleTimeLimiter.callWithTimeout(SimpleTimeLimiter.java:148)
at org.openqa.selenium.net.UrlChecker.waitUntilAvailable(UrlChecker.java:75)
at org.openqa.selenium.remote.service.DriverService.waitUntilAvailable(DriverService.java:187)
at org.openqa.selenium.remote.service.DriverService.start(DriverService.java:178)
at org.openqa.selenium.remote.service.DriverCommandExecutor.execute(DriverCommandExecutor.java:79)
at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:601)
at org.openqa.selenium.remote.RemoteWebDriver.startSession(RemoteWebDriver.java:219)
For that i want to install libgconf-2-4 in my jenkins container through the below command
yum install libgconf-2-4
When i try to install the below error is coming in my jenkins container
sh-4.2$ yum install libgconf2-4
Loaded plugins: ovl, product-id, search-disabled-repos, subscription-manager
[Errno 13] Permission denied: '/etc/pki/entitlement-host'
ovl: Error while doing RPMdb copy-up:
[Errno 13] Permission denied: '/var/lib/rpm/.dbenv.lock'
You need to be root to perform this command.
When i goto specified location and try to change the permissions as chmod 777 .dbenv.lock
sh-4.2$ cd /var/lib/rpm/
sh-4.2$ ls -latr
total 19560
-rw-r--r--. 1 root root 0 Aug 9 18:21 .dbenv.lock
it is throwing error as
sh-4.2$ chmod 777 .dbenv.lock
chmod: changing permissions of ‘.dbenv.lock’: Operation not permitted
My question is how to enter into jenkins pod as root user and install the rpm package libgconf-2-4 through yum install libgconf-2-4 in openshift?

Answer 1

It seems you should customize the jenkins images as follows.[0]
Create the Dockerfile.
FROM registry.access.redhat.com/openshift3/jenkins-2-rhel7
USER 0
RUN yum -y install libgconf2-4 && yum clean all -y
USER 1001
Build the image using the Dockerfile.
docker build .
Login the internal registry of OpenShift for pushing image.
docker login -u admin -p docker-registry.default.svc:5000
Retag as OpenShift image format and your tag policy.
docker tag docker-registry.default.svc:5000/openshift/jenkins-2-rhel7-custom
Push the image.
docker push docker-registry.default.svc:5000/openshift/jenkins-2-rhel7-custom
Edit your deploymentConfig
oc edit dc/jenkins
...
containers:
...
image: "openshift/jenkins-2-rhel7-custom"
...
I hope it help you. :^)
[0]General Container Image Guidelines

Answer 2

you can use USER root in your dockerfile that will solve your problem