Logged on as bryan@localserver, I'm trying to perform a backup using rsync on a remote host bryan@remoteserver.
I need the rsync connection to elevate privileges on the remote host using
--rsync-path='sudo rsync', but I'm having problems, so have decided to simplify matters and just try to get the following working first:
bryan@localserver # ssh bryan@remoteserver 'sudo /usr/bin/whoami'
Once, I've cracked this, I should be able to get rsync working.
What I've done so far:
I've got ssh configured so that bryan@localserver can ssh to bryan@remoteserver using key instead of a password.
bryan@localserver # ssh bryan@remoteserver bryan@remoteserver #
I've also configured bryan@remoteserver to be able to run
/usr/bin/whoami as sudo, without a password in the sudoers file on remoteserver:
bryan ALL=(ALL) NOPASSWD: /usr/bin/whoami
This works fine:
bryan@remotehost # sudo whoami root
But from the local server:
bryan@localhost # ssh bryan@remoteserver 'sudo /usr/bin/whoami' sudo: no tty present and no askpass program specified Sorry, try again. sudo: no tty present and no askpass program specified Sorry, try again. sudo: no tty present and no askpass program specified Sorry, try again. sudo: 3 incorrect password attempts
My complete sudoers file (minus the comments and blank lines) is below:
Defaults env_reset Defaults secure_path="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin" Defaults !requiretty root ALL=(ALL:ALL) ALL bryan ALL=(ALL) NOPASSWD: /usr/bin/whoami %admin ALL=(ALL) ALL %sudo ALL=(ALL:ALL) ALL
ssh -t from localserver solves the 'no tty present' error, but still prompts me for bryan@remotehost's password.
Can anyone please explain what the problem is?
localserver is Ubuntu 10.04 x64, remoteserver is Ubuntu 12.04 x64.