I have the same problem.
adduser will fail but it will not report it. Digging into the scripts
I've found this in /var/lib/dpkg/info/openssh-server.postinst:
setup_sshd_user() {
if ! getent passwd sshd >/dev/null; then
adduser --quiet --system --no-create-home --home /var/run/sshd
--shell /usr/sbin/nologin sshd
fi
}
When NIS is running, I manually ran the adduser command above and no
error is printed out nor an error status is returned, $? is zero.
Changing the command and removing the --quiet parameter:
friends:~# adduser --system --no-create-home --home /var/run/sshd --shell
/usr/sbin/nologin sshd
The system user `sshd' already exists. Exiting.
friends:~# echo $?
0
So I had to stop NIS and then run adduser again.
friends:~# adduser --system --no-create-home --home /var/run/sshd --shell
/usr/sbin/nologin sshd
Adding system user `sshd' (UID 111) ...
Adding new user `sshd' (UID 111) with group `nogroup' ...
Not creating home directory `/var/run/sshd'.
--
openssh-server install does not create privilege separation user sshd
https://bugs.launchpad.net/bugs/227592
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