CODEWITHSUNDEEP
ubuntuasp.net-core.net-corecoredumpsystemctl
BąQ
BąQ

Reputation: 306

core-dump error when trying to run asp .netcore app under Ubuntu 16.04

I'm trying to run my asp .net core app as a service under Ubuntu 16.04. I've created service configuration following this documentation

[Unit]
Description=TNW Main Service

[Service]
WorkingDirectory=/home/tnw
ExecStart=/usr/bin/dotnet /home/tnw/Tnw.MealsApi.dll
Restart=always
RestartSec=10
SyslogIdentifier=tnw
User=www-data
Environment=ASPNETCORE_ENVIRONMENT=Production

[Install]
WantedBy=multi-user.target

I've enabled my service:

sudo systemctl enable tnw.service

And finally I've tried to run it but I obtain exception:

● tnw.service - TNW Main Service Loaded: loaded (/etc/systemd/system/tnw.service; enabled; vendor preset: enabled)
Active: activating (auto-restart) (Result: core-dump) since Tue 2019-09-10 12:57:20 CEST; 118ms ago
Process: 15160 ExecStart=/usr/bin/dotnet /home/tnw/Tnw.MealsApi.dll (code=dumped, signal=ABRT)
Main PID: 15160 (code=dumped, signal=ABRT)

Sep 10 12:57:20 server767126 systemd[1]: tnw.service: Unit entered failed state.
Sep 10 12:57:20 server767126 systemd[1]: tnw.service: Failed with result 'core-dump'.

When I run this app manually it works fine.

sudo dotnet Tnw.MealsApi.dll

//Edit I've found in journal following exception:

 System.Net.Sockets.SocketException (13): Permission denied

Upvotes: 8

Views: 15594

Answers (3)

Zameer
Zameer

Reputation: 1

my service is running fine but not able to access outside as it is showing 502 , if I am running with direct command then it is working fine. need help on this fix

below is service status .

Demo.service - Demo
     Loaded: loaded (/etc/systemd/system/Demo.service; enabled; preset: disabled)
     Active: active (running) since Tue 2023-07-11 12:29:39 UTC; 6s ago
   Main PID: 1476925 (dotnet)
      Tasks: 15 (limit: 4568)
     Memory: 15.6M
        CPU: 389ms
     CGroup: /system.slice/Demo.service
             └─1476925 /usr/bin/dotnet /home/ec2-user/wwwroot/WebApp.dll --urls http://localhost:5000

Upvotes: 0

Rodion Mostovoi
Rodion Mostovoi

Reputation: 1583

In my case, the reason was an exception on the program startup. I've found it using this command: journalctl -f.
Also, it's recommended to wrap a program startup with try block and log the error to file using Serilog for example.

Upvotes: 4

Arvind Chourasiya
Arvind Chourasiya

Reputation: 17432

As per this use Downloads folder to keep your dll. Below configuration of .service file 

[Unit]
Description=MyService in .NET
# Requires=xyz.service
# After=xyz.service

[Service]
Type=simple
ExecStart=/usr/bin/dotnet  /home/linux/Downloads/MyService.dll

[Install]
WantedBy=multi-user.target

This path /home/linux/Downloads/MyService.dll can be different in your case.

And then run

sudo systemctl daemon-reload

Upvotes: 1

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