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Operating Systems Linux Red Hat Need to login without password using ssh Post 302969613 by acascianelli on Thursday 24th of March 2016 02:59:27 PM
Old 03-24-2016
Add your public SSH key to the .ssh/authorized_keys file in the users home directory.

If you don't have an SSH key pair, generate one with ssh-keygen. If you give it a password while generating, you'll need to enter that password when logging in, so I'm guessing you'll want to leave that blank.

You also have to make sure permissions are set correctly on various files and folders:
  • Home dir: no more than 755 (not group or world writable).
  • .ssh dir: no more than 755 (not group or world writable). (mkdir -m755
  • authorized_keys file: not more than 644 (not group or world writable)
  • id_rsa.pub (Public key) file: not more than 644 (not group or world writeable)
  • id_rsa (Private key) file: not more than 600 (not group or world readable)

Last edited by acascianelli; 03-24-2016 at 04:16 PM..
 

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ONEUSER(1)					      oneuser(1) -- manages OpenNebula users						ONEUSER(1)

NAME
oneuser SYNOPSIS
oneuser command [args] [options] OPTIONS
-r, --read-file Read password from file --sha1 The password will be hashed using the sha1 algorithm --ssh SSH Auth system --x509 x509 Auth system for x509 certificates -k, --key path_to_private_key_pem Path to the Private Key of the User -c, --cert path_to_user_cert_pem Path to the Certificate of the User --driver driver Driver to autehnticate this user --x509_proxy x509 Auth system based on x509 proxy certificates --proxy path_to_user_proxy_pem Path to the user proxy certificate --time x Token duration in seconds, defaults to 3600 (1 h) -l, --list x,y,z Selects columns to display with list command -d, --delay x Sets the delay in seconds for top command -x, --xml Show the resource in xml format -n, --numeric Do not translate user and group IDs -v, --verbose Verbose mode -h, --help Show this message -V, --version Show version and copyright information COMMANDS
o create username [password] Creates a new User Examples: oneuser create my_user my_password oneuser create my_user -r /tmp/mypass oneuser create my_user --ssh --key /tmp/id_rsa oneuser create my_user --ssh -r /tmp/public_key oneuser create my_user --x509 --cert /tmp/my_cert.pem valid options: read_file, sha1, ssh, x509, key, cert, driver o update userid Launches the system editor to modify and update the template contents o login username Creates the Login token for authentication Examples: oneuser login my_user --ssh --key /tmp/id_rsa --time 72000 oneuser login my_user --x509 --cert /tmp/my_cert.pem --key /tmp/my_key.pk --time 72000 oneuser login my_user --x509_proxy --proxy /tmp/my_cert.pem --time 72000 valid options: ssh, x509, x509_proxy, key, cert, proxy, time o key Shows a public key from a private SSH key. Use it as password for the SSH authentication mechanism. valid options: key o delete range|userid_list Deletes the given User o passwd userid [password] Changes the given User's password valid options: read_file, sha1, ssh, x509, key, cert, driver o chgrp range|userid_list groupid Changes the User's main group o chauth userid [auth] [password] Changes the User's auth driver and its password (optional) Examples: oneuser chauth my_user core oneuser chauth my_user core new_password oneuser chauth my_user core -r /tmp/mypass oneuser chauth my_user --ssh --key /home/oneadmin/.ssh/id_rsa oneuser chauth my_user --ssh -r /tmp/public_key oneuser chauth my_user --x509 --cert /tmp/my_cert.pem valid options: read_file, sha1, ssh, x509, key, cert, driver o list Lists Users in the pool valid options: list, delay, xml, numeric o show [userid] Shows information for the given User valid options: xml ARGUMENT FORMATS
o file Path to a file o range List of id's in the form 1,8..15 o text String o groupid OpenNebula GROUP name or id o userid OpenNebula USER name or id o userid_list Comma-separated list of OpenNebula USER names or ids o password User password LICENSE
OpenNebula 3.4.1 Copyright 2002-2012, OpenNebula Project Leads (OpenNebula.org) Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 April 2012 ONEUSER(1)
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