I just started using the free trial of google cloud. How can I access my VM using ssh and ftp/sftp? I googled a bit, but couldnt find much
I fixed it, you have to /etc/ssh/sshd_config
And change
PasswordAuthentication no to yes.
Then you use sudo service ssh restart
To restart the ssh daemon. Then use sudo passwd to change the root password. Now you can ssh/sftp using username root and password what you just set
Use the new tool gcloud for ssh'ing and other operations on your VM instances: gcloud compute ssh example-instance
Problem: frequently the first command I type to my boxes is su -.
Question: how do I make vagrant ssh use the root user by default?
Version: vagrant 1.6.5
This is useful:
sudo passwd root
for anyone who's been caught out by the need to set a root password in vagrant first
Solution:
Add the following to your Vagrantfile:
config.ssh.username = 'root'
config.ssh.password = 'vagrant'
config.ssh.insert_key = 'true'
When you vagrant ssh henceforth, you will login as root and should expect the following:
==> mybox: Waiting for machine to boot. This may take a few minutes...
mybox: SSH address: 127.0.0.1:2222
mybox: SSH username: root
mybox: SSH auth method: password
mybox: Warning: Connection timeout. Retrying...
mybox: Warning: Remote connection disconnect. Retrying...
==> mybox: Inserting Vagrant public key within guest...
==> mybox: Key inserted! Disconnecting and reconnecting using new SSH key...
==> mybox: Machine booted and ready!
Update 23-Jun-2015:
This works for version 1.7.2 as well. Keying security has improved since 1.7.0; this technique overrides back to the previous method which uses a known private key. This solution is not intended to be used for a box that is accessible publicly without proper security measures done prior to publishing.
Reference:
https://docs.vagrantup.com/v2/vagrantfile/ssh_settings.html
This works if you are on ubuntu/trusty64 box:
vagrant ssh
Once you are in the ubuntu box:
sudo su
Now you are root user. You can update root password as shown below:
sudo -i
passwd
Now edit the below line in the file /etc/ssh/sshd_config
PermitRootLogin yes
Also, it is convenient to create your own alternate username:
adduser johndoe
Wait until it asks for password.
If Vagrantfile as below:
config.ssh.username = 'root'
config.ssh.password = 'vagrant'
config.ssh.insert_key = 'true'
But vagrant still ask you root password,
most likely the base box you used do not configured to allow root login.
For example, the offical ubuntu14.04 box do not set PermitRootLogin yes in /etc/ssh/sshd_config.
So If you want a box can login as root default(only Vagrantfile, no more work), you have to :
Setup a vm by username vagrant(whatever name but root)
Login and edit sshd config file.
ubuntu: edit /etc/ssh/sshd_config, set PermitRootLogin yes
others: ....
(I only use ubuntu, feel free to add workaround of other platforms)
Build a new base box:
vagrant package --base your-vm-name
this create a file package.box
Add that base box to vagrant:
vagrant box add ubuntu-root file:///somepath/package.box
then, you need use this base box to build vm which allow auto login as root.
Destroy original vm by vagrant destroy
Edit original Vagrantfile, change box name to ubuntu-root and username to root, then vagrant up create a new one.
It cost me some time to figure out , it is too complicate in my opinion. Hope vagrant would improve this.
Dont't forget root is allowed root to login before!!!
Place the config code below in /etc/ssh/sshd_config file.
PermitRootLogin yes
Note: Only use this method for local development, it's not secure.
You can setup password and ssh config while provisioning the box. For example with debian/stretch64 box this is my provision script:
config.vm.provision "shell", inline: <<-SHELL
echo -e "vagrant\nvagrant" | passwd root
echo "PermitRootLogin yes" >> /etc/ssh/sshd_config
sed -in 's/PasswordAuthentication no/PasswordAuthentication yes/g' /etc/ssh/sshd_config
service ssh restart
SHELL
This will set root password to vagrant and permit root login with password. If you are using private_network say with ip address 192.168.10.37 then you can ssh with ssh root#192.168.10.37
You may need to change that echo and sed commands depending on the default sshd_config file.
Adding this to the Vagrantfile worked for me. These lines are the equivalent of you entering sudo su - every time you login. Please notice that this requires reprovisioning the VM.
config.vm.provision "shell", inline: <<-SHELL
echo "sudo su -" >> .bashrc
SHELL
I know this is an old question, but looking at the original question, it looks like the user just wanted to run a command as root, that's what I need to do when I was searching for an answer and stumbled across the question.
So this one is worth knowing in my opinion:
vagrant ssh servername -c "echo vagrant | sudo -S shutdown 0"
vagrant is the password being echoed into the the sudo command, because as we all know, the vagrant account has sudo privileges and when you sudo, you need to specify the password of the user account, not root..and of course by default, the vagrant user's password is vagrant !
By default you need root privileges to shutdown so I guess doing a shutdown is a good test.
Obviously you don't need to specify a server name if there is only one for that vagrant environment. Also, we're talking about local vagrant virtual machine to the host, so there isn't really any security issue that I can see.
Hope this helps.
I had some troubles with provisioning when trying to login as root, even with PermitRootLogin yes. I made it so only the vagrant ssh command is affected:
# Login as root when doing vagrant ssh
if ARGV[0]=='ssh'
config.ssh.username = 'root'
end
I used vagrant putty with the vagrant multi putty plugin, it took me directly to root.
vagrant destroy
vagrant up
Please add this to vagrant file:
config.ssh.username = 'vagrant'
config.ssh.password = 'vagrant'
config.ssh.insert_key = 'true'
From my laptop, I often ssh into another machine in my university department. I have to put in a password every time currently.
Could someone give me an idiot's guide to having the password be automatically entered each time I log in please.
Thank you in advance.
You can override by enabling Password less authentication. But you should install keys (pub, priv) before going for that.
Execute the following commands at local server.
Local $> ssh-keygen -t rsa
Press ENTER for all options prompetd. No values need to be typed.
Local $> cd .ssh
Local $> scp .ssh/id_rsa.pub user#targetmachine:
Prompts for pwd$> ENTERPASSWORD
Connect to remote server using the following command
Local $> ssh user#targetmachine
Prompts for pwd$> ENTERPASSWORD
Execute the following commands at remote server
Remote $> mkdir .ssh
Remote $> chmod 700 .ssh
Remote $> cat id_rsa.pub >> .ssh/authorized_keys
Remote $> chmod 600 .ssh/authorized_keys
Remote $> exit
Execute the following command at local server to test password-less authentication.
It should be connected without password.
$> ssh user#targetmachine
I assume you are using Linux. Lot of places in the internet where it is already documented.
For example(s):
http://www.rebol.com/docs/ssh-auto-login.html
http://www.linuxproblem.org/art_9.html
You can log in without providing password if PKI (public key infrastructure) is set up.
Otherwise you'll have to look for ssh client that can store passwords and supports your operating system.
Use a tool (such as AutoHotkey, assuming you are using Windows) to record and replay key sequences: http://www.autohotkey.com/
I had an existing opensuse 64 bit machine which i exported using
vagrant package --base opensuse64 --output opensuse.box
After creating box I created another folder 'package-test' and copied the created box file there. Then I used
vagrant init opensuse opensuse.box
and then
vagrant up
but I am unable to connect to it via ssh.
Am I doing something wrong?
Thanks
To make vagrant ssh work, your OpenSUSE VM has to be configured for Public Key Authentication using Vagrant's key pair.
If you want to use password authentication, you'll have to specify the ssh port and use username/password known to you.
NOTE: If this is a vagrant base box, by default you can login as vagrant/vagrant with sudo privilege, as per the packaging guide.
If you want to use your own key pair, you can copy the public key and add it to the VM's ~/.ssh/authorized_keys.
Examples
Manual (1 liner)
cat /path/to/vagrant.pub | ssh user#host 'cat >> ~/.ssh/authorized_keys'
Use ssh-copy-id
# -i defaults to ~/.ssh/id_rsa.pub
ssh-copy-id user#host
# custom pub key
ssh-copy-id -i vagrant.pub user#host
NOTE: make sure ~/.ssh and ~/.ssh/authorized_keys in the VM have proper permission.
How do I setup passwordless ssh between nodes on AWS cluster
Following steps to setup password less authentication are tested thoroughly for Centos and Ubuntu.
Assumptions:
You already have access to your EC2 machine. May be using the pem key or you have credentials for a unix user which has root permissions.
You have already setup RSA keys on you local machine. Private key and public key are available at "~/.ssh/id_rsa" and "~/.ssh/id_rsa.pub" respectively.
Steps:
Login to you EC2 machine as a root user.
Create a new user
useradd -m <yourname>
sudo su <yourname>
cd
mkdir -p ~/.ssh
touch ~/.ssh/authorized_keys
Append contents of file ~/.ssh/id_rsa.pub on you local machine to ~/.ssh/authorized_keys on EC2 machine.
chmod -R 700 ~/.ssh
chmod 600 ~/.ssh/*
Make sure sshing is permitted by the machine. In file /etc/ssh/sshd_config, make sure that line containing "PasswordAuthentication yes" is uncommented. Restart sshd service if you make any change in this file:
service sshd restart # On Centos
service ssh restart # On Ubuntu
Your passwordless login should work now. Try following on your local machine:
ssh -A <yourname>#ec2-xx-xx-xxx-xxx.ap-southeast-1.compute.amazonaws.com
Making yourself a super user. Open /etc/sudoers. Make sure following two lines are uncommented:
## Allows people in group wheel to run all commands
%wheel ALL=(ALL) ALL
## Same thing without a password
%wheel ALL=(ALL) NOPASSWD: ALL
Add yourself to wheel group.
usermod -aG wheel <yourname>
This may help someone
Copy the pem file on the machine then copy the content of pem file to the .ssh/id_rsa file you can use bellow command or your own
cat my.pem > ~/.ssh/id_rsa
try ssh localhost it should work and same with the other machines in the cluster
how I made Paswordless shh work between two instances is the following:
create ec2 instances – they should be in the same subnet and have the same security group
Open ports between them – make sure instances can communicate to each other. Use the default security group which has one rule relevant for this case:
Type: All Traffic
Source: Custom – id of the security group
Log in to the instance you want to connect from to the other instance
Run:
1 ssh-keygen -t rsa -N "" -f /home/ubuntu/.ssh/id_rsa
to generate a new rsa key.
Copy your private AWS key as ~/.ssh/my.key (or whatever name you want to use)
Make sure you change the permission to 600
1 chmod 600 .ssh/my.key
Copy the public key to the instance you wish to connect to passwordless
1 cat ~/.ssh/id_rsa.pub | ssh -i ~/.ssh/my.key ubuntu#10.0.0.X "cat >> ~/.ssh/authorized_keys"
If you test the passwordless ssh to the other machine, it should work.
1 ssh 10.0.0.X
you can use ssh keys like described here:
http://pkeck.myweb.uga.edu/ssh/