1. When attempting a command which requires input from the console the following error could occur:
can't open /dev/tty: No such device or address
2. When attempting to ssh the following error is given, even when SSHing to localhost:
Host key verification failed.
- When running ssh -vvv user@localhost the exact debug line relating to this issue is: debug1: read_passphrase: can't open /dev/tty: No such device or address.
3. SFTP fails with the following error in auth.log:
error: open /dev/tty failed - could not set controlling tty: No such file or directory
The /dev/tty ‘special file’ has been removed.
mknod -m 644 /dev/tty c 5 0
This creates /dev/tty but only allows root to use it, run chmod a+rw /dev/tty