can't running epc

[ghost]

Issue Description

[Describe the issue in detail] can't running epc

Setup Details

[Specify details of the test setup. This would help us reproduce the problem reliably] e.g. Network configuration, Operation System, Hardware, RF front-end, library and driver versions pi os lite Debian 11 bulleye

Expected Behavior

[What you expect to happen] can pass running epc step

Actual Behaviour

[What happens instead e.g. error message] $ sudo ./srsepc/src/srsepc

Built in Release mode using commit ce8a3cae1 on branch master.

---  Software Radio Systems EPC  ---

Couldn't open , trying /root/.config/srsran/epc.conf
Couldn't open /root/.config/srsran/epc.conf either, trying /etc/srsran/epc.conf
Failed to read EPC configuration file /etc/srsran/epc.conf - exiting

Steps to reproduce the problem

[Tell us how to reproduce this issue e.g. RF setup, application config files] https://docs.srsran.com/en/latest/app_notes/source/zeromq/source/index.html#running-the-epc

Additional Information

[Any additional information, configuration or data that might be necessary to reproduce the issue]

[robertfalkenberg]

Please check if the file /root/.config/srsran/epc.conf is present, since you run it as user root via sudo, or use the config install script as described here

[ghost]

yes is it but i can't still run epc chatofking@raspberrypi:~/.config/srsran $ srsran_install_configs.sh user

Installing srsRAN configuration files:
 - /home/chatofking/.config/srsran/ue.conf already exists. Skipping it.
 - /home/chatofking/.config/srsran/enb.conf already exists. Skipping it.
 - /home/chatofking/.config/srsran/sib.conf already exists. Skipping it.
 - /home/chatofking/.config/srsran/rr.conf already exists. Skipping it.
 - /home/chatofking/.config/srsran/rb.conf already exists. Skipping it.
 - /home/chatofking/.config/srsran/epc.conf already exists. Skipping it.
 - /home/chatofking/.config/srsran/mbms.conf already exists. Skipping it.
 - /home/chatofking/.config/srsran/user_db.csv already exists. Skipping it.
Done.

chatofking@raspberrypi:~/srsRAN/build $ sudo ./srsepc/src/srsepc

Built in Release mode using commit ce8a3cae1 on branch master.

---  Software Radio Systems EPC  ---

Couldn't open , trying /root/.config/srsran/epc.conf
Couldn't open /root/.config/srsran/epc.conf either, trying /etc/srsran/epc.conf
Failed to read EPC configuration file /etc/srsran/epc.conf - exiting

what should i do ??

[robertfalkenberg]

According to your output, the config files are located in the home directory of user chatofking. However, if you run srsepc as user root (via sudo), the programsrsepc` searches the home directory of the user that runs the application for the config files.

If you run as root, it will search in /root/.config/srsran, not in /home/chatofking/.config/srsran.

You could copy the files to the other location and adjust your settings there.

[ghost]

when I don't use sudo it shows chatofking@raspberrypi:~/srsRAN/build $ ./srsepc/src/srsepc

Built in Release mode using commit ce8a3cae1 on branch master.

---  Software Radio Systems EPC  ---

Couldn't open , trying /home/chatofking/.config/srsran/epc.conf
Reading configuration file /home/chatofking/.config/srsran/epc.conf...
Couldn't open user_db.csv, trying /home/chatofking/.config/srsran/user_db.csv
HSS Initialized.
MME S11 Initialized
MME GTP-C Initialized
MME Initialized. MCC: 0xf001, MNC: 0xff01
Could not initialize the SGi interface.
Could not initialize the SPGW's GTP-U.
Error initializing SP-GW

what should I do ??

[robertfalkenberg]

srsEPC need permissions to create a tun network device. This either requires root permissions, or the application binary needs special permissions to do it when run as a normal unprivileged user. You can add the required permission flag as follows:

# enter build directory
cd ~/srsRAN/build/srsepc/src

# set cap_net_admin+eip flag
sudo setcap cap_net_admin+eip ./srsepc

# run the epc
./srsepc

[jukomol]

According to your output, the config files are located in the home directory of user chatofking. However, if you run srsepc as user root (via sudo), the programsrsepc` searches the home directory of the user that runs the application for the config files.

If you run as root, it will search in /root/.config/srsran, not in /home/chatofking/.config/srsran.

You could copy the files to the other location and adjust your settings there.

I am not sure which settings you are talking about. I am also facing the same problem. How to adjust the settings? Or how can I make epc.conf accessible to srsepc?