[SOLVED] How to substitute the value SSH_PUBLIC_KEY with the output of cat ~/.ssh/id_rsa.pub

Community Support
1

Hi all!!
I’m trying to install opennebula on ubuntu with virtualbox
I’m following this guide
http://docs.opennebula.org/4.12/design_and_installation/quick_starts/qs_ubuntu_kvm.html#qs-ubuntu-kvm
at step "3.2. Adding virtual resources"
I don’t know how to
"Substitute the value above with the output of cat ~/.ssh/id_dsa.pub"
wich command I have to enter to copy the password on
EDITOR=vi oneuser update oneadmin
Thank you!!!

2

When you try to connect to machine using openssh some of distros now dont let user root connect directly using password authentication method you should use ssh keys .
here it tells you to copy whats inside this file ~/.ssh/id_dsa.pub or ~/.ssh/id_rsa.pub and assign it to a variable named SSH_PUBLIC_KEY after that it let you connect to all instances of user oneadmin with login as root and no password .
if you dont have one of these files create using ssh-keygen command .
why you dont use opennebula sunstone for starting ?

3

I’m following the guide…it says the same as you…but I don’t know how to do with the command line…
copypaste doesn’t work :frowning:
if I open ~/.ssh/id_rsa.pub, copy, and then open EDITOR=vi oneuser update oneadmin
i can’t paste it :frowning::frowning:

…furthermore copying the key entering it char by char is impossible…

but if you say I can do the same via sunstone…I will try!!

4

You can try with this :

$ echo SSH_PUBLIC_KEY="`cat ~/.ssh/id_dsa.pub`" > tmpfile
$ oneuser update oneadmin -a tmpfile
$ rm -f tmpfile
2 Likes
5

Thank you it worked!!!
I edited something

$ echo SSH_PUBLIC_KEY='"'`cat ~/.ssh/id_dsa.pub`'"' > tmpfile
$ oneuser update oneadmin -a tmpfile
$ rm -f tmpfile

note the ' " ' before and after
because I need the key to be between " "

Thanks @Arash and @michaudg for your precious support!!