The error message “read_urandom: /dev/urandom: open failed: No such file or directory” indicates that the system is unable to open the /dev/urandom device, which is used to generate random numbers for various system functions, including cryptography.
This error can occur due to a number of reasons, including:
- Incorrect permissions on the /dev/urandom device: The /dev/urandom device should be readable by all users, so check the permissions and ownership of the file and make sure that they are set correctly.
- Device file missing: The /dev/urandom device may be missing or have been deleted. You can try to recreate it by running the following command as root:
mknod -m 0666 /dev/urandom c 1 9
- Hardware issue: In some cases, the error may be caused by a hardware issue, such as a failing hard drive. In this case, you may need to replace the hardware.
- Kernel bug: This error can also occur as a result of a bug in the kernel. Upgrading to the latest version of the kernel may resolve the issue.
If none of these steps resolve the issue, you may need to seek further assistance from the system administrator or a Linux support community.