I am new to Jenkins and have set it up with 4 slaves and trying to run Cucumbers (Capybara+Selenium+Firefox) in vncserver(tried xvfb as well) mode. But some of the slave nodes timeout randomly throwing "execution expired (Timeout::Error)" at the line below
Capybara.current_session.driver.browser.manage.window.resize_to(1600, 900)
and in
page.driver.browser.save_screenshot(screenshot_path)
Starting from here all the remaining tests fail. Have tried using the Xvnc plugin in Jenkins as well but still fails. How do I fix this? Should I use a window manager? Will tightvnc use any default Window Manager? Is it related?
My ~/.vnc/xstartup
#!/bin/sh
xrdb $HOME/.Xresources
xsetroot -solid grey
#x-terminal-emulator -geometry 80x24+10+10 -ls -title "$VNCDESKTOP Desktop" &
#x-window-manager &
# Fix to make GNOME work
export XKL_XMODMAP_DISABLE=1
/etc/X11/Xsession
Does someone know what is causing the timeout error?
Looks like this happened because it took time for the browser to open at times so we have to wait or assert till the browser loads. Link here: https://sqa.stackexchange.com/questions/15345/selenium-webdriver-sometimes-fails-to-connect-to-the-browser-when-running-tests
Related
I'm currently using knife zero to help me provision the servers and the commands are executed through Jenkins.
But recently I noticed that the process will stuck halfway through without any error and it is always at the part where it start executing the Java recipe.
So every time the process got stuck, I will have to reboot my system to get it running again.
The Java cookbook i'm using is from Chef supermarket.
https://supermarket.chef.io/cookbooks/java/versions/1.50.0
How should I debug this issue?
I would agree with #coderanger that this sounds like a symptom of a process that is waiting for user input before it can continue. Is it possible that you're trying to install Java 7 and haven't included the attribute accept_oracle_download_terms?
From the docs for that cookbook, this is explicitly noted as being required:
To install Oracle Java 7 (note that when installing Oracle JDK,
accept_oracle_download_terms attribute must be set
After much investigation, I found out that this is due to the lack of available ram in the system when chef is running.
I use the sudo sh -c 'echo 3 > /proc/sys/vm/drop_caches' command to clear up the caches at the start of each run and my script no longer get stuck anymore.
http://linuxinsight.com/proc_sys_vm_drop_caches.html
I am using Snapshot from the FastLane suite.
For my purposes I am calling the various tools from scripts and pass in the appropriate environment variables I am using as the inputs.
I am having trouble when I call my script in Jenkins vs from the command line. When I call the script within a Build Step in Jenkins the result is a message from Snapshot saying the process has timed out after waiting 120 seconds for the simulator to boot. If I run this same script from the terminal Snapshot runs as expected without error.
Example:
snapshot \
--workspace "MyWorkspace.xcworkspace" \
--scheme "MyScheme" \
--output_directory "MyOutputDirectory" \
--clear_previous_screenshots \
--stop_after_first_error
(--devices --languages can be found in ./Snapfile)
Snapfile:
devices([
"iPhone 4s"
])
languages([
"en-US"
])
Am I missing something here?
Configuring Jenkins to work for iOS testing and automation is not a simple task, there are a lot of gotchas.
Jenkins the result is a message from Snapshot saying the process has timed out after waiting 120 seconds for the simulator to boot.
This suggests that your Jenkins machine is not able to run the Simulator. This can happen if the jenkins user is not able to start a UI session.
These two posts have useful information on how to configure Jenkins for iOS development:
https://blog.pivotal.io/labs/labs/ios-ci-jenkins
http://staxmanade.com/2015/01/setting-jenkins-up-to-run-xctool-and-xcode-simulator-tests/
The second in particular addresses the issue of Jenkins not running as a GUI user.
Good luck.
I'm working my way through the Ruby on Rails Tutorial, and suddenly the terminal is not responding to common commands.
Entering commands like "bundle exec rake test" or "rails console" creates the situation in the screenshot below and waiting hours does not change anything.
http://i59.tinypic.com/2poz5ah.png
I can type on the line but the Terminal still doesn't respond to any commands here. Ctrl+C allows me to escape the previous request and get back to the command line.
Strangely, "git status" works fine and quick.
Any ideas how to fix this?
I've tried restarting the Terminal and re-loading the workspace.
I just ran into the same problem two times (also going thru the Rails Tutorial) and here's how I went about adressing it:
Click on the workspace button in the top right corner- that's where it shows your CPU, Memory & Disk Usage (if you're on a laptop/small screen zoom out or make the screen as wide as possible to view that).
Next click on the "show process" button to see active processes.
After that I "force killed" my bash and ruby processes.
Lastly I clicked the "restart" button, which you see that when you first clicked to see the workspace info. Please note that if I went first to clicking this "restart" it had no effect... I had to force kill... THEN resart...
Viola, two times now it worked!
Not sure if this has any impact, but both times I mentally retraced my steps and realized I had several terminal windows open and willy-nilly ran the console multiple times in different terminal windows over the course of a few days. I would then run into not being able to run rails c UNLESS I have previously "properly" exited an already running console (meaning ctrl-c).
I've run into something similar while running Rails on my machine, and a full system restart does the trick. Perhaps due to the cloud based nature of Rails on Cloud9 there is some "sticky" process that stays on?
EDIT: Forgot to mention that on my machine I would also run "killall ruby" in a new terminal window. While that didn't work on Cloud9 it may be worth a try!
Anyhoo- lemme know if that does the trick!
Please do report these kind of (performance) questions to our Support desk via https://support.c9.io - we'll be able to help you quickly! Thanks.
what I did is just killed that process
ubuntu 5318 0.0 0.0 488820 16872 pts/3 Sl Dec24 0:01 spring server
kill -9 5318
You will have ur pid number. so just use it.
to get process -- use :
ps aux
Executing "bin/spring stop" would solve the issue as well. It is currently unknown why this happens and we are looking into that.
Hi I am running my functional tests using geb.
I am able to run tests on my local computer correctly. but as I deploy my application to server. the build for functional tests fails.
Here is my console output
|Running 10 spock tests... 1 of 10
Failure: |
sign in with voucher
|
geb.driver.DriverCreationException: failed to create driver from callback 'script14007213321291157436758$_run_closure1#77068fce'
at geb.driver.CallbackDriverFactory.getDriver(CallbackDriverFactory.groovy:35)
at geb.driver.CachingDriverFactory.getDriver_closure3(CachingDriverFactory.groovy:80)
at geb.driver.CachingDriverFactory$SimpleCache.get(CachingDriverFactory.groovy:30)
at geb.driver.CachingDriverFactory.getDriver(CachingDriverFactory.groovy:79)
at geb.Configuration.createDriver(Configuration.groovy:346)
at geb.Configuration.getDriver(Configuration.groovy:335)
at geb.Browser.getDriver(Browser.groovy:105)
at geb.Browser.go(Browser.groovy:377)
at geb.Page.to(Page.groovy:171)
at geb.Browser.via(Browser.groovy:454)
at geb.Browser.to(Browser.groovy:413)
at geb.Browser.to(Browser.groovy:391)
at geb.spock.GebSpec.methodMissing(GebSpec.groovy:51)
at VoucherSpec.sign in with voucher(VoucherSpec.groovy:14)
Caused by: org.openqa.selenium.WebDriverException: Failed to connect to binary FirefoxBinary(/usr/local/bin/firefox) on port 7056; process output follows:
Error: no display specified
Error: no display specified
Can anyone guide me to solve this issue.
The server you're running the tests on is 'headless' so doesn't have a display to start Firefox on to run the tests. You've got a couple of options:
Switch from Firefox to a headless browser such as HTMLUnit.
Configure a virtual display on the server.
Use a remote browser service such as SauceLabs.
If you need to test directly on Firefox then HTMLUnit isn't an option for you.
Using a remote browser service such as SauceLabs or BrowserStack has a couple of advantages, for example they record a video of the session and take screenshots, but we found the overhead of passing commands & traffic over the network made the tests unacceptably slow. If you need to test a wide variety of browsers then the overhead diminishes because you can run in parallel...
Option 2, using a virtual display, is the simplest to configure on most servers. If you're using Linux the X Virtual Frame Buffer (XVFB) will get you up and running quickly. It's worth reading up on what's going on but the short answer is:
Install XVFB (sudo apt-get install xvfb)
Install Firefox (sudo apt-get install firefox)
Start XVFB (sudo Xvfb :10 -ac -screen 0 1024x768x8 &). You may want to add an init script so this happens every time the server starts
In your CI server add export DISPLAY=:10 as a step before the tests are run
Run your tests
The XVFB creates a virtual display on :10, which you then set as the default display. When you start Firefox it's completely unaware that it's on a virtual display, so things like getting Geb to take screenshots of failing tests will work as normal.
For more information about the steps see:
http://www.installationpage.com/selenium/how-to-run-selenium-headless-firefox-in-ubuntu/
https://github.com/tomaslin/grails-test-recipes
http://www.semicomplete.com/blog/geekery/xvfb-firefox.html
http://www.labelmedia.co.uk/blog/setting-up-selenium-server-on-a-headless-jenkins-ci-build-machine.html
http://manpages.ubuntu.com/manpages/lucid/man1/xvfb-run.1.html
If you need an init script to get it to start/stop, then there are quite a few to choose from, such as this one.
I have the following problem: I have an ANT-task in Jenkins-CI that (apparently) needs access to OSX' window server (it needs to show a window). After doing some research, it appears that only the currently logged in user and the 'root' user (or SUDO) can access OSX' window server.
The ANT task (Adobe ADL) is one that actually 'runs' a build, so it has to popup a screen.
I'm on a macBook running OSX 10.7.something (Lion), Jenkins 1.487, Ant 1.8.4.
What i have tried so far:
to start with, tried the 'barebone' < exec > task to invoke ADL. Works, but getting error that means that Jenkins running as daemon (with homedir /Users/shared/Jenkins/Home) cannot access OSX' Window Server.
Run Jenkins as myself, by changing USER_NAME, GROUP_NAME, JENKINS_HOME in the jenkins launchd.conf file: https://wiki.jenkins-ci.org/display/JENKINS/Thanks+for+using+OSX+Installer
this gives a lot of errors/trouble, which i tried to solve in communication with the creator of the Jenkins CI but, unfortunately to no avail.
Try to have Ant run an < exec > task (running a shell script) in which i try to sudo with a password using this sneaky way of passing a password to the stdinput: echo < password > | sudo -S < command > which is really bad, but as i'm running Jenkins locally (not reachable from the outside of my LAN) it's np.
Tried to have Ant run an < exec > task, using a 'redirector' with as inputstring my password. also superbad, but yea, i just want it to work. which it did not.
Tried a Jenkins SSH plugin: didn't work. I could, however, SSH to my own localhost using terminal, thing is, i don't know what the Jenkins SSH was trying to do (how can i figure that out anyway?) so i don't know why it wouldn't work.
Tried to have Ant run an SSHEXEC task (which, after some hours, finally worked. Ant for mac is borked, something with optional .jar tasks not being re-named correctly or something) but i'm getting a "com.jcraft.jsch.JSchException: Auth fail" which i googled for, and can't seem to resolve. only applicable solution is to have sshd accept password auths, did that, still got the same error.
I think what i want to accomplish was NOT worth the 2 days that i spent so far on this problem, although i learned a lot. However, i just want this to work and will not accept defeat, yet :)
My question: have you had to solve a similar problem, how did you go about it? are there any other methods i can try to solve this problem? Is there a method mentioned that should JUST _WORK_ and i did something wrong?
[edit] I have decided to go with the Jenkins standalone app, as i think (for me) this is a nicer solution in total, as my laptop is not a build server. Also, the Jenkins app can start at startup so it actually acts as a local server.
Just a quick guess: if you don't want the interactivity of the script, and the script can do without it, you can try to set the headless mode on the java command-line:
-Djava.awt.headless=true
I have decided to go with the Jenkins standalone app, as i think (for me) this is a nicer solution anyway, as my laptop is not a (headless) build server. Also, the Jenkins app can start at startup so it acts as a server too.