I am using codedeploy to deploy a springboot app to an ec2. But I keep getting a script timeout error. I event set the timeout to 60 seconds event tho the application always starts up within 20 seconds. The application starts up fine. I run top on the linux instance and see the java process started up. I can then use postman to hit the http status check endpoint and confirm that it has started up successfully. But this is what it looks like in the code deploy console:
The appspec.yml file looks like this
The server_start.sh file looks like this.
Why is this happening? Thanks.
I think this has more to do with how Linux process works than with Code Build. I'm far from being a specialist on that, but according to with AWS documentation, there is a certain way you must use to start your long-running processes, as a Java application
The syntax is:
#!/bin/bash
/tmp/sleep.sh > /dev/null 2> /dev/null < /dev/null &
Replace the sleep by your Java command.
More details here
You should put some some codes of your script to the BeforeInstall or AfterInstall.
remove java -jar application.jar
BeforeInstall – You can use this deployment lifecycle event for preinstall tasks, such as decrypting files and creating a backup of the current version.
Install – During this deployment lifecycle event, the CodeDeploy agent copies the revision files from the temporary location to the final destination folder. This event is reserved for the CodeDeploy agent and cannot be used to run scripts.
AfterInstall – You can use this deployment lifecycle event for tasks such as configuring your application or changing file permissions.
ApplicationStart – You typically use this deployment lifecycle event to restart services that were stopped during ApplicationStop.
Then create another bash script for your ApplicationStart. Put the line your removed earlier on this script.
I am trying to run a Docker image on amazon ECS. I am using a command that starts a shell script to boot up the program:
CMD ["sh","-c", "app/bin/app start; bash"]
in order to start it because for some reason when I run the app (elixir/phoenix app) in the background it was crashing immediately but if I run it in the foreground it is fine. If I run it this way locally, everything works fine but when I try to run it in my cluster, it shuts down. Please help!!
Docker was supposed to keep track of your running foreground process, if the process stop, the container stop. The reason your container work when you use command with "bash" because bash wasn't stop.
I guess you use she'll script to start an application that serve in background like nginx or a daemon. So try to find an option that make the app running foreground will keep your container alive. I.e nginx has an option while starting "daemon off"
for some reason when I run the app (elixir/phoenix app) in the background it was crashing immediately
So you have a corrupted application and you are looking for a kludge to make it looking like it somewhat works. This is not a reliable approach at all.
Instead you should:
make it working in background
use systemctl or upstart to manage restarts of Erlang VM on crashes
Please note that it matters where you have your application compiled. It must be the exactly same architecture/container as the production one, with same Erlang, Elixir, OS versions, otherwise nobody guarantees it will be robust or even working.
I am using wildfly 10.1 in standalone mode and need to use it as a service.
I copied the service files to the bin folder and then installed the service from the command prompt.
This works well, except that it is impossible to stop the service without killing the process using taskkill.
As a fix, I tried replacing
set DESCRIPTION="WildFly Application Server"
with
set DESCRIPTION=WildFly Application Server
in the service.bat file as mentioned here. But this is causing the service not to start. The system log says:
The Wildfly service terminated with the following service-specific
error: Incorrect function.
How can I fix this issue and get the service starting and stoppping normally?
Add System variable JAVA_HOME to System variable and try to start the service. It worked for me.
Ok, I have a simple console application that runs as a service, automatically starting up...
In the main entry point of this application I have this (pseudo code):
if ParamStr(1) = '-service' then
begin
WriteDebugFile('service openned!', 'C:\Debug.txt')
end
The services.msc show me this file path:
C:\ProgramData\My Service\commandline.exe -service
and I tried too:
"C:\ProgramData\My Service\commandline.exe" -service
If I Start/Stop the service from the services.msc, I keep getting the Debug.txt lines added, this means that the console application detected -service as a parameter. But if I logoff/logon or restart Windows, I just don't get anything on the Debug.txt file. The service runs, appears as running, the process is created, but looks like it runs without the parameter '-service'. What is happening here?
In order to run one application, a batch file has to be kicked off (which does things like start Jetty, display live logs, etc). The application will work only if this batch file is running. I am hence forced to have this batch file running and not logout from the Windows server.
Can this batch file be run as a service? I am experimenting with one of the suggestions from a similar question.
NSSM is totally free and hyper-easy, running command prompt / terminal as administrator:
nssm install "YourCoolServiceNameLabel"
then a dialog will appear so you can choose where is the file you want to run.
to uninstall
nssm remove "YourCoolServiceNameLabel"
There's a built in windows cmd to do this: sc create. Not as fancy as nssm, but you don't have to download an additional piece of software.
sc create "ServiceName" start= demand displayname= "DisplayName" binpath= [path to .bat file]
Note
start=demand means you must start the service yourself. Options include: boot, system, auto, demand, disabled, delayed-auto
whitespace is required after =
I did encounter an error on service start that the service did not respond in a timely manner, but it was clear the service had run the .bat successfully. Haven't dug into this yet but this thread experienced the same thing and solved it using nssm to install the service.
No need for extra software. Use the task scheduler -> create task -> hidden. The checkbox for hidden is in the bottom left corner. Set the task to trigger on login (or whatever condition you like) and choose the task in the actions tab. Running it hidden ensures that the task runs silently in the background like a service.
Note that you must also set the program to run "whether the user is logged in or not" or the program will still run in the foreground.
On Windows 2019 Server, you can run a Minecraft java server with these commands:
sc create minecraft-server DisplayName= "minecraft-server" binpath= "cmd.exe /C C:\Users\Administrator\Desktop\rungui1151.lnk" type= own start= auto
The .lnk file is a standard windows shortcut to a batch file.
--- .bat file begins ---
java -Xmx40960M -Xms40960M -d64 -jar minecraft_server.1.15.1.jar
--- .bat file ends ---
All this because:
service does not know how to start in a folder,
cmd.exe does not know how to start in a folder
Starting the service will produce "timely manner" error, but the log file reveals the server is running.
If you need to shut down the server, just go into task manager and find the server java in background processes and end it, or terminate the server from in the game using the /stop command, or for other programs/servers, use the methods relevant to the server.
As Doug Currie says use RunAsService.
From my past experience you must remember that the Service you generate will
have a completely different set of environment variables
have to be carefully inspected for rights/permissions issues
might cause havoc if it opens dialogs asking for any kind of input
not sure if the last one still applies ... it was one big night mare in a project I worked on some time ago.
While it is not free (but $39), FireDaemon has worked so well for me I have to recommend it. It will run your batch file but has loads of additional and very useful functionality such as scheduling, service up monitoring, GUI or XML based install of services, dependencies, environmental variables and log management.
I started out using FireDaemon to launch JBoss application servers (run.bat) but shortly after realized that the richness of the FireDaemon configuration abilities allowed me to ditch the batch file and recreate the intent of its commands in the FireDaemon service definition.
There's also a SUPER FireDaemon called Trinity which you might want to look at if you have a large number of Windows servers on which to manage this service (or technically, any service).
Since NSSM is no longer maintained, you can consider using WinSW. It has binaries that would work with or without .Net.
Basically you create an XML file and then install it. Here is a sample of a minimal XML:
<service>
<!-- ID of the service. It should be unique across the Windows system-->
<id>myapp</id>
<!-- Path to the executable, which should be started -->
<!-- CAUTION: Don't put arguments here. Use <arguments> instead. -->
<executable>%BASE%\myExecutable.exe</executable>
</service>
And then you can install and start it:
winsw install myapp.xml
winsw start myapp.xml
Install NSSM and run the .bat file as a windows service.
Works as expected
My easest way is using opensource svcbatch (https://github.com/mturk/svcbatch/) as wrapper of CMD(BAT) in sc :
sc create myservice binPath= ""%cd%\svcbatch.exe" myservice.bat"