Linux のバージョンによっては、rootでrsync をする時に以下の設定が必要。
[root@kei01 root]# cat /etc/pam.d/rsh
#%PAM-1.0
# For root login to succeed here with pam_securetty, "rsh" must be
# listed in /etc/securetty.
auth required /lib/security/pam_nologin.so
#auth required /lib/security/pam_securetty.so → コメントアウト
auth required /lib/security/pam_env.so
#auth required /lib/security/pam_rhosts_auth.so → コメントアウト
account required /lib/security/pam_stack.so service=system-auth
session required /lib/security/pam_stack.so service=system-auth
また、xinetdの場合
[root@kei01 root]# cat /etc/xinetd.d/shell
# securlevel: 30
service shell
{
disable = no
socket_type = stream
protocol = tcp
wait = no
user = root
server = /usr/sbin/in.rshd
server_args = -h → 追加
}