Running script as root when connected as oracle user with ssh

Question

I have a problem with my situation that i have to run a script inside another machine as root. I can only do ssh without password as oracle, so i have to write something like that:

  su - oracle -c "ssh $node /tmp/x.sh"

How can i run x.sh as root?

EDIT

[root@alz1 ~]# su - oracle
[oracle@alz1 ~]$ su
Password: 
su: incorrect password
[oracle@alz1 ~]$

You are root initially, change user to oracle, and then try to change back to root again? Why? Nowhere do you connect to a remote machine. — Peder Klingenberg
– Peder Klingenberg, Commented Mar 19, 2014 at 12:44
Because i can only ssh with oracle. Also i need to run my command as root — AloneInTheDark
– AloneInTheDark, Commented Mar 19, 2014 at 12:45
Yes, but you also need to connect to the remote box somewhere. See my new answer. — Peder Klingenberg
– Peder Klingenberg, Commented Mar 19, 2014 at 12:47

Peder Klingenberg · Accepted Answer · 2014-03-19 12:09:06Z

1

Have you tried

su - oracle -c "ssh root@$node /tmp/x.sh"

answered Mar 19, 2014 at 12:09

Peder Klingenberg

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8 Comments

AloneInTheDark Over a year ago

I doesn't work because when i can only ssh to another node as oracle. When i ssh to other node with oracle, then run as root, it wants password.

Peder Klingenberg Over a year ago

If you can't ssh in as root, you need sudo access or the root password. If you have neither of those, you need to talk to the administrator of the machine you are trying to do this to.

AloneInTheDark Over a year ago

I have root password but how can i ssh with password in script ?

Peder Klingenberg Over a year ago

It's not a good idea to store the root password in a script. Can you not ssh in to the oracle user interactively, and then run su - -c /tmp/x.sh?

Peder Klingenberg Over a year ago

Alternatively, you could set up passphrase-less keys to let your remote oracle user access the remote root user without needing to type anything. This would make the oracle user equivalent to root on the remote box, which may not be desireable.

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Peder Klingenberg · Accepted Answer · 2014-03-19 12:54:45Z

0

Try this:

[root@box1]# su - oracle
[oracle@box1]$ ssh box2
[oracle@box2]$ su -

Then type the password for root at the remote box. It should then proceed as

[root@box2]# /tmp/x.sh

and you're done.

edited Mar 19, 2014 at 12:54

answered Mar 19, 2014 at 12:47

Peder Klingenberg

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2 Comments

AloneInTheDark Over a year ago

i can connect with putty as root to machine but not with "su -" command, that's strange. what if i get the right password, how can i set password when running from script?

Peder Klingenberg Over a year ago

You don't want the root password stored in a script. You can set up ssh to allow access without having to type anything by using keys with no passphrase. Google for "ssh passphrase-less root access" will give you some pointers.

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