I'm trying to run a swift based web server using Kitura on Ubuntu.
This is following command to start hello word server.
.build/debug/helloworld
I can launch standalone process using .build/debug/helloworld &
but launching with that creates multiple process if execute again.
Or I've to kill old process then start new If I want to run only single process.
I've followed following tutorial to get server up running. But don't want to use Bluemix to deploy application. Instead I want to launch it on AWS ubuntu.
http://www.kitura.io/en/starter/gettingstarted.html
I assume there must be more easy and proper way to do this.
As you can see I'm almost newbie for servers.
You have to kill the Kitura process in order to stop a Kitura Server app - there is no other way to stop it.
If you just want to test your server you can run it inside a screen session. Screen is an essential utility for managing remote servers via ssh.
If you want to run it properly as a service/daemon you should look into systemd.
Related
Before explaining what my problem is, please know that I have looked up for solutions on similar topics but none of them seems to work nor even to corresponds to my problem.
What I am trying to do:
I have this python code on multiple files that I run with flask with the following command:
python -m flask run --host=0.0.0.0
So far, everything works, but I would like this code to automatically run everytime the computer boots. In the future this will be used on mini PCs without any graphical interface nor human intervention.
Since I need to do some configuration checks before running the web server, I've created a powershell script that ends with Flask running (using the previous command).
So far, everything works too. Now we're coming to the problem:
I'd like this script to run when I boot the machine. Specificity: Every things needs to work with Administrator privileges, on the local system without any interaction.
I've tried scheduled tasks but Flask won't run even if the rest of the script works (like creating folders or other things)
Ok, it's not a big deal I have other ways to do it, so I've created a Windows Service in C# to run the Script at startup on the local system.
The script works, I've checked the privileges too, everything's fine but arriving at the flask command line that is supposed to make it run, nothing works.
It's the same thing if I run flask using "pythonw" which is supposed to run python as a background process.
What the problem seems to be:
Well, as long as I run flask and I have either a command prompt or a powershell terminal, everything works greats. But if in a way or another I run the script as a background process, it won't work.
Normally it would take around 30 seconds for Flask to start-up. Here if I try to create a folder right after flask ended starting up (as a test) I can see the folder is created almost instantly, which means the process is immediately killed.
The problem doesn't seem to come from the service itself but really Windows that kills the process I don't know why
I'm running out of idea so if you guys have anything that I could try it would really help me.
I have create a small script file to test.
This my script.bat file.
sc create myService binpath= C:\Users\Admin\Desktop\test.bat start= auto
This is my test.bat file.
echo "Welcome to Wizard"
Problem Statement
I am unable to start the service from control panel Service section.
I get following error.
[SC] StartService FAILED 1053:
The service did not respond to the start or control request in a timely fashion.
That is why I am using nssm.
NOW what happening is that when I run following command on powershell
.\nssm install myService, I dialogue box appears. I give it the path of my script file and click on install service.
After successfull installation of service. I go to control panel -> Service -> click on start against myService but it get paused and following dialog box appears
How can I fix this?
Is there anyother way to do it without doing manual steps and not using third party tool.
I am doing all this on window 10. Do I need any server to perform this task?
NOTE: I cannot use Always up or window scheduler in my case.
The NSSM behaviour is caused by the script terminating almost instantly. Try the following script:
echo Hello World
pause
This should allow the service to start, but you will not necessarily see a console window. Even if you tick 'allow service to interact with desktop', it will not be your desktop that it interacts with!
Windows implements 'session zero isolation' as a security feature, and this essentially prevents services interacting with end user desktops.
In terms of a solution, it's possible to write Windows 'service' applications fairly simply using Visual Studio. It's outside my area of expertise, but based on the Windows applications I'm familiar with, you would generally have a user-mode application running to provide desktop interaction. The user-mode application can interact with services hosted by the service application.
Probably this is resolved by now, but in case it helps anyone, what saved the day for me was checking again my input in the arguments field in nssm. I had an extra "-" which created the error. To edit my service, I went via nssm edit <servicename>
I would also add on the fix that worked for me. I added "" (quotes) in the argument path and that solved the issue for me.
I run several game servers on a single windows-server-2012-r2. Many of the game servers run as console-application. I have created scheduled-tasks to run each on windows startup even if I'm not logged on. I would like to be able to attach to the consoles of those apps when logged on to the server, similar to what can be done in linux. Perhaps I'm going about this in the wrong way. Is there a way to attach to console apps running as tasks? Is there a software tool that accommodates this sort of thing?
Update:
Been searching high and low for a solution but haven't found anything yet. Have decided to write a wrapper for console app that will redirect Stdin, Stdout and Stderr of a process to a Telnet connection. Will use nssm to run the wrapper as a service.
I produced a solution: https://github.com/ccourson/Banjo
Banjo will launch a specified console application and route its streams to and from a telnet connection.
Pull requests welcome.
I have followed this guide to install a jenkins slave on windows 8 as a service:
https://wiki.jenkins-ci.org/display/JENKINS/Installing+Jenkins+as+a+Windows+service#InstallingJenkinsasaWindowsservice-InstallSlaveasaWindowsservice%28require.NET2.0framework%29
I need to run a job that interact with the desktop (run an application that opens a browser etc.). So after I have installed the slave as a service (running jnlp downloaded from the master) I have changed the service "Log on" to "Allow to interact with display".
For some reason its only possible to enable this for the "Local System account" even though its recommended to run the service as a specified user, eg. jenkins.
But nothing happens when I execute the job, the browser is not opened. If I instead stop the service and just launch the slave through the jnlp file the job runs fine - the browser is opened.
Anybody had any luck interacting with the desktop when running a jenkins windows slave as a service?
Services run since Vista in Session 0 and the first user is now in Session 1. So you can't interact any longer. This is called Session 0 Isolation.
Microsoft explains this here and here. You have to use 2nd Program which uses IPC to communicate to the Service.
I had lots of issues running Jenkins in Windows using the service.
Instead I now disable the service and run it from CMD.
So open CMD.
cd C:\Program Files (x86)\Jenkins
java -Xrs -Xmx256m -Dhudson.lifecycle=hudson.lifecycle.WindowsServiceLifecycle -jar
jenkins.war --httpPort=9091
To resolve it, first create Windows auto-logon as I explain here:
https://serverfault.com/questions/269832/windows-server-2008-automatic-user-logon-on-power-on/606130#606130
Then create a startup batch for Jenkins agent (place it in Jenkins directory). This will launch agent console on desktop, and should allow Jenkins to interact with Windows GUI:
java -jar slave.jar -jnlpUrl http://{Your Jenkins Server}:8080/computer/{Your Jenkins Node}/slave-agent.jnlp
(slave.jar can be download from http://{Your Jenkins Server}:8080/jnlpJars/slave.jar)
EDIT :
If you're getting black screenshots (when using Selenium or Sikuli, for example), create a batch file that disconnects Remote Desktop, instead of closing the RDP session with the regular X button:
%windir%\system32\tscon.exe %SESSIONNAME% /dest:console
Consider running the Java slave server directly at startup and then using something to monitor and restart should the server go down (e.g., Kiwi Restarter).
Please check the services (# TestNode) make sure the "Interactive Services Detection" service is STARTED, by default the startup type is set to Manual, you may like to set it to automatic as well.
After service started, when you run your test in the Test Node, you will see something like the below:
Click on it and choose view the message
You will see the activities happen there. Hope this helps :D
Note: If login with other account and cannot view the Interative Services Detection prompt, restart the service again.
My Jenkins Service runs as user "jenkins" and all I did was to create Desktop folders in: C:\Windows\system32\config\systemprofile\desktop and if 64 bit Windows also in C:\Windows\SysWOW64\config\systemprofile\desktop - then it runs perfectly.
Make sure that Desktop folders are created as such:
%WINDOWS%/System32/config/systemprofile/Desktop
%WINDOWS%/SystemWOW64/config/systemprofile/Desktop
Presence of those can sometimes be mandatory while running some Java software as a Service.
I am trying to launch MS Office through WINE using a Perl script hosted by apache
and and triggered by other application. I am getting the following error message in
log files "Application trying to create a window but no driver could not be loaded.
Make sure that your X server is running and that $DISPLAY is set correctly".
If I run the script directly on shell prompt using root user then WINE starts
XServer properly and execute MS MSoffice in addition to that if I set xhost +local:apache on shell prompt then also it works fine.
How can I start the XServer from apache user?
It is an exceedingly bad idea to start a X server per httpd worker. If you insist on doing this though, use Xvfb.
My recommendation would be to have a separate daemon handle the document conversion/creation, and use a message queue to pass it jobs.