KVM - Virt-Manager on a Separate VM

[JaredBusch]

@tim_g said in KVM - Virt-Manager on a Separate VM:

@jaredbusch said in KVM - Virt-Manager on a Separate VM:

@tim_g said in KVM - Virt-Manager on a Separate VM:

Step 1: On your KVM host, run the following command:
ssh-keygen -t rsa -b 4096 -C "KVM01_Root_SSHKey"
Step 2: On your desktop/vm used to manage the KVM host, run the following command:
ssh-keygen -t rsa -b 4096 -C "PCName_userName_SSHKey"

Why are you doing this? You want some specific thing? Because the act of having SSH on your system generates a key. Are defaults not good enough for you.

I think the default ones there in the /etc/ssh directory are 2048.

They are.

[JaredBusch]

@tim_g said in KVM - Virt-Manager on a Separate VM:

@jaredbusch said in KVM - Virt-Manager on a Separate VM:

@tim_g said in KVM - Virt-Manager on a Separate VM:

Step 1: On your KVM host, run the following command:
ssh-keygen -t rsa -b 4096 -C "KVM01_Root_SSHKey"
Step 2: On your desktop/vm used to manage the KVM host, run the following command:
ssh-keygen -t rsa -b 4096 -C "PCName_userName_SSHKey"

Why are you doing this? You want some specific thing? Because the act of having SSH on your system generates a key. Are defaults not good enough for you.

Definitely not in this case. I always prefer to use RSA 4096...

But you are over complicating this also. For what reason? Just because you want a 4096 key over a 2048?

[Obsolesce]

@jaredbusch said in KVM - Virt-Manager on a Separate VM:

@tim_g said in KVM - Virt-Manager on a Separate VM:

@jaredbusch said in KVM - Virt-Manager on a Separate VM:

@tim_g said in KVM - Virt-Manager on a Separate VM:

Step 1: On your KVM host, run the following command:
ssh-keygen -t rsa -b 4096 -C "KVM01_Root_SSHKey"
Step 2: On your desktop/vm used to manage the KVM host, run the following command:
ssh-keygen -t rsa -b 4096 -C "PCName_userName_SSHKey"

Why are you doing this? You want some specific thing? Because the act of having SSH on your system generates a key. Are defaults not good enough for you.

Definitely not in this case. I always prefer to use RSA 4096...

But you are over complicating this also. For what reason? Just because you want a 4096 key over a 2048?

Yes.

Over-complicating? Definitely not. It takes 5 extra seconds to ensure you can use your key securely.

[Obsolesce]

@jaredbusch said in KVM - Virt-Manager on a Separate VM:

@tim_g said in KVM - Virt-Manager on a Separate VM:

@jaredbusch said in KVM - Virt-Manager on a Separate VM:

@tim_g said in KVM - Virt-Manager on a Separate VM:

Step 1: On your KVM host, run the following command:
ssh-keygen -t rsa -b 4096 -C "KVM01_Root_SSHKey"
Step 2: On your desktop/vm used to manage the KVM host, run the following command:
ssh-keygen -t rsa -b 4096 -C "PCName_userName_SSHKey"

Why are you doing this? You want some specific thing? Because the act of having SSH on your system generates a key. Are defaults not good enough for you.

Definitely not in this case. I always prefer to use RSA 4096...

But you are over complicating this also. For what reason? Just because you want a 4096 key over a 2048?

[stacksofplates]

@tim_g said in KVM - Virt-Manager on a Separate VM:

Wtf is going on here... everyone is making it so difficult... it's not!

Step 1: On your KVM host, run the following command:
ssh-keygen -t rsa -b 4096 -C "KVM01_Root_SSHKey"

Step 2: On your desktop/vm used to manage the KVM host, run the following command:
ssh-keygen -t rsa -b 4096 -C "PCName_userName_SSHKey"

Step 3: On your desktop/VM, copy your public key:
cat /home/username/.ssh/id_rsa.pub
...then copy it.

Step 4: On your KVM Host, paste what you copy in Step 3 into the file here:
vi /root/.ssh/authorized_keys
...then save the file.

Step 5: On your desktop/VM using virt-manager, add the server like below... type in the host name then click connect.
No password required.

But see doing it this way has skipped a bunch of stuff that ssh-copy-id does. This will end up with more questions later on.

I would be willing to be dollars to donuts if someone uses this they will have to change permissions on that authorized_keys file because it's not created by defualt.

Seriously just generate the key (RSA is the default):

ssh-keygen -b 4096

and copy to the server:

ssh-copy-id user@server

Make sure the user on the server is in the libvirt group and use that user in Virt-Manager.

Done.

[Obsolesce]

@stacksofplates said in KVM - Virt-Manager on a Separate VM:

@tim_g said in KVM - Virt-Manager on a Separate VM:

Wtf is going on here... everyone is making it so difficult... it's not!

Step 1: On your KVM host, run the following command:
ssh-keygen -t rsa -b 4096 -C "KVM01_Root_SSHKey"

Step 2: On your desktop/vm used to manage the KVM host, run the following command:
ssh-keygen -t rsa -b 4096 -C "PCName_userName_SSHKey"

Step 3: On your desktop/VM, copy your public key:
cat /home/username/.ssh/id_rsa.pub
...then copy it.

Step 4: On your KVM Host, paste what you copy in Step 3 into the file here:
vi /root/.ssh/authorized_keys
...then save the file.

Step 5: On your desktop/VM using virt-manager, add the server like below... type in the host name then click connect.
No password required.

But see doing it this way has skipped a bunch of stuff that ssh-copy-id does. This will end up with more questions later on.

I would be willing to be dollars to donuts if someone uses this they will have to change permissions on that authorized_keys file because it's not created by defualt.

Seriously just generate the key (RSA is the default):

ssh-keygen -b 4096

and copy to the server:

ssh-copy-id user@server

Yes, but this assumes you've already got SSH going and unsecure enough to do a ssh-copy-id to the server. This isn't the case for me.

But you are right, generally the ssh-copy-id is the way to go as I suppose I'm the only one here who does things securely, or this is done before securing SSH on the server.

[stacksofplates]

@tim_g said in KVM - Virt-Manager on a Separate VM:

@stacksofplates said in KVM - Virt-Manager on a Separate VM:

@tim_g said in KVM - Virt-Manager on a Separate VM:

Wtf is going on here... everyone is making it so difficult... it's not!

Step 1: On your KVM host, run the following command:
ssh-keygen -t rsa -b 4096 -C "KVM01_Root_SSHKey"

Step 2: On your desktop/vm used to manage the KVM host, run the following command:
ssh-keygen -t rsa -b 4096 -C "PCName_userName_SSHKey"

Step 3: On your desktop/VM, copy your public key:
cat /home/username/.ssh/id_rsa.pub
...then copy it.

Step 4: On your KVM Host, paste what you copy in Step 3 into the file here:
vi /root/.ssh/authorized_keys
...then save the file.

Step 5: On your desktop/VM using virt-manager, add the server like below... type in the host name then click connect.
No password required.

But see doing it this way has skipped a bunch of stuff that ssh-copy-id does. This will end up with more questions later on.

I would be willing to be dollars to donuts if someone uses this they will have to change permissions on that authorized_keys file because it's not created by defualt.

Seriously just generate the key (RSA is the default):

ssh-keygen -b 4096

and copy to the server:

ssh-copy-id user@server

Yes, but this assumes you've already got SSH going and unsecure enough to do a ssh-copy-id to the server. This isn't the case for me.

But you are right, generally the ssh-copy-id is the way to go as I suppose I'm the only one here who does things securely, or this is done before securing SSH on the server.

hahahahaha. Wtf are you talking about. What does "unsecure enough to do a ssh-copy-id" possibly mean?

[StorageNinja]

@stacksofplates I can break your 4096 bit encryption with $5.
If your worried about state-level actors you have bigger concerns

[Obsolesce]

@stacksofplates said in KVM - Virt-Manager on a Separate VM:

@tim_g said in KVM - Virt-Manager on a Separate VM:

@stacksofplates said in KVM - Virt-Manager on a Separate VM:

@tim_g said in KVM - Virt-Manager on a Separate VM:

Wtf is going on here... everyone is making it so difficult... it's not!

Step 1: On your KVM host, run the following command:
ssh-keygen -t rsa -b 4096 -C "KVM01_Root_SSHKey"

Step 2: On your desktop/vm used to manage the KVM host, run the following command:
ssh-keygen -t rsa -b 4096 -C "PCName_userName_SSHKey"

Step 3: On your desktop/VM, copy your public key:
cat /home/username/.ssh/id_rsa.pub
...then copy it.

Step 4: On your KVM Host, paste what you copy in Step 3 into the file here:
vi /root/.ssh/authorized_keys
...then save the file.

Step 5: On your desktop/VM using virt-manager, add the server like below... type in the host name then click connect.
No password required.

But see doing it this way has skipped a bunch of stuff that ssh-copy-id does. This will end up with more questions later on.

I would be willing to be dollars to donuts if someone uses this they will have to change permissions on that authorized_keys file because it's not created by defualt.

Seriously just generate the key (RSA is the default):

ssh-keygen -b 4096

and copy to the server:

ssh-copy-id user@server

Yes, but this assumes you've already got SSH going and unsecure enough to do a ssh-copy-id to the server. This isn't the case for me.

But you are right, generally the ssh-copy-id is the way to go as I suppose I'm the only one here who does things securely, or this is done before securing SSH on the server.

hahahahaha. Wtf are you talking about. What does "unsecure enough to do a ssh-copy-id" possibly mean?

When I try to do a ssh-copy-id to my servers, I get this:

Permission denied (publickey,gssapi-keyex,gssapi-with-mic).

This is expected, as I do not allow root logon, I do not allow password auth, and only allow RSA key based authentication.

[Obsolesce]

@storageninja said in KVM - Virt-Manager on a Separate VM:

@stacksofplates I can break your 4096 bit encryption with $5.
If your worried about state-level actors you have bigger concerns

Challenge accepted.

Pst me your email and I'll give you a key to break.

Leave me an audit trail so I can confirm.

[JaredBusch]

@DustinB3403

I use my user in the libvirt group so I do not have to bother with the root user.

gpasswd -a jbusch libvirt

Then this works.

[scottalanmiller]

@tim_g said in KVM - Virt-Manager on a Separate VM:

When I try to do a ssh-copy-id to my servers, I get this:

Permission denied (publickey,gssapi-keyex,gssapi-with-mic).

This is expected, as I do not allow root logon, I do not allow password auth, and only allow RSA key based authentication.

@stacksofplates said in KVM - Virt-Manager on a Separate VM:

@tim_g said in KVM - Virt-Manager on a Separate VM:

@stacksofplates said in KVM - Virt-Manager on a Separate VM:

@tim_g said in KVM - Virt-Manager on a Separate VM:

Wtf is going on here... everyone is making it so difficult... it's not!

Step 1: On your KVM host, run the following command:
ssh-keygen -t rsa -b 4096 -C "KVM01_Root_SSHKey"

Step 2: On your desktop/vm used to manage the KVM host, run the following command:
ssh-keygen -t rsa -b 4096 -C "PCName_userName_SSHKey"

Step 3: On your desktop/VM, copy your public key:
cat /home/username/.ssh/id_rsa.pub
...then copy it.

Step 4: On your KVM Host, paste what you copy in Step 3 into the file here:
vi /root/.ssh/authorized_keys
...then save the file.

Step 5: On your desktop/VM using virt-manager, add the server like below... type in the host name then click connect.
No password required.

But see doing it this way has skipped a bunch of stuff that ssh-copy-id does. This will end up with more questions later on.

I would be willing to be dollars to donuts if someone uses this they will have to change permissions on that authorized_keys file because it's not created by defualt.

Seriously just generate the key (RSA is the default):

ssh-keygen -b 4096

and copy to the server:

ssh-copy-id user@server

Yes, but this assumes you've already got SSH going and unsecure enough to do a ssh-copy-id to the server. This isn't the case for me.

But you are right, generally the ssh-copy-id is the way to go as I suppose I'm the only one here who does things securely, or this is done before securing SSH on the server.

hahahahaha. Wtf are you talking about. What does "unsecure enough to do a ssh-copy-id" possibly mean?

How did you get into that state? How do the initial keys get there?

[stacksofplates]

@tim_g said in KVM - Virt-Manager on a Separate VM:

When I try to do a ssh-copy-id to my servers, I get this:

Permission denied (publickey,gssapi-keyex,gssapi-with-mic).

This is expected, as I do not allow root logon, I do not allow password auth, and only allow RSA key based authentication.

Ok? We are talking about an initial hypervisor setup. Passwords are enabled by default. You copy your key, then shut the passwords off. Idk what the eff is going on here.....

[stacksofplates]

@jaredbusch said in KVM - Virt-Manager on a Separate VM:

@DustinB3403

I use my user in the libvirt group so I do not have to bother with the root user.

gpasswd -a jbusch libvirt

Then this works.

Ya idk where the root thing came from.

[JaredBusch]

@stacksofplates said in KVM - Virt-Manager on a Separate VM:

Idk what the eff is going on here.....

Overcomplication of course.

[stacksofplates]

@storageninja said in KVM - Virt-Manager on a Separate VM:

@stacksofplates I can break your 4096 bit encryption with $5.
If your worried about state-level actors you have bigger concerns

I'm not worried about anything. I'm not the one that said anything about key security

[Obsolesce]

@scottalanmiller said in KVM - Virt-Manager on a Separate VM:

@tim_g said in KVM - Virt-Manager on a Separate VM:

When I try to do a ssh-copy-id to my servers, I get this:

Permission denied (publickey,gssapi-keyex,gssapi-with-mic).

This is expected, as I do not allow root logon, I do not allow password auth, and only allow RSA key based authentication.

@stacksofplates said in KVM - Virt-Manager on a Separate VM:

@tim_g said in KVM - Virt-Manager on a Separate VM:

@stacksofplates said in KVM - Virt-Manager on a Separate VM:

@tim_g said in KVM - Virt-Manager on a Separate VM:

Wtf is going on here... everyone is making it so difficult... it's not!

Step 1: On your KVM host, run the following command:
ssh-keygen -t rsa -b 4096 -C "KVM01_Root_SSHKey"

Step 2: On your desktop/vm used to manage the KVM host, run the following command:
ssh-keygen -t rsa -b 4096 -C "PCName_userName_SSHKey"

Step 3: On your desktop/VM, copy your public key:
cat /home/username/.ssh/id_rsa.pub
...then copy it.

Step 4: On your KVM Host, paste what you copy in Step 3 into the file here:
vi /root/.ssh/authorized_keys
...then save the file.

Step 5: On your desktop/VM using virt-manager, add the server like below... type in the host name then click connect.
No password required.

But see doing it this way has skipped a bunch of stuff that ssh-copy-id does. This will end up with more questions later on.

I would be willing to be dollars to donuts if someone uses this they will have to change permissions on that authorized_keys file because it's not created by defualt.

Seriously just generate the key (RSA is the default):

ssh-keygen -b 4096

and copy to the server:

ssh-copy-id user@server

Yes, but this assumes you've already got SSH going and unsecure enough to do a ssh-copy-id to the server. This isn't the case for me.

But you are right, generally the ssh-copy-id is the way to go as I suppose I'm the only one here who does things securely, or this is done before securing SSH on the server.

hahahahaha. Wtf are you talking about. What does "unsecure enough to do a ssh-copy-id" possibly mean?

How did you get into that state? How do the initial keys get there?

Salt.

[mattbagan]

@jaredbusch said in KVM - Virt-Manager on a Separate VM:

@DustinB3403

I use my user in the libvirt group so I do not have to bother with the root user.

gpasswd -a jbusch libvirt

Then this works.

Never tried it that way. I've always used:
usermod -a -G libvirt <username>

[stacksofplates]

@tim_g said in KVM - Virt-Manager on a Separate VM:

@scottalanmiller said in KVM - Virt-Manager on a Separate VM:

@tim_g said in KVM - Virt-Manager on a Separate VM:

When I try to do a ssh-copy-id to my servers, I get this:

Permission denied (publickey,gssapi-keyex,gssapi-with-mic).

This is expected, as I do not allow root logon, I do not allow password auth, and only allow RSA key based authentication.

@stacksofplates said in KVM - Virt-Manager on a Separate VM:

@tim_g said in KVM - Virt-Manager on a Separate VM:

@stacksofplates said in KVM - Virt-Manager on a Separate VM:

@tim_g said in KVM - Virt-Manager on a Separate VM:

Wtf is going on here... everyone is making it so difficult... it's not!

Step 1: On your KVM host, run the following command:
ssh-keygen -t rsa -b 4096 -C "KVM01_Root_SSHKey"

Step 2: On your desktop/vm used to manage the KVM host, run the following command:
ssh-keygen -t rsa -b 4096 -C "PCName_userName_SSHKey"

Step 3: On your desktop/VM, copy your public key:
cat /home/username/.ssh/id_rsa.pub
...then copy it.

Step 4: On your KVM Host, paste what you copy in Step 3 into the file here:
vi /root/.ssh/authorized_keys
...then save the file.

Step 5: On your desktop/VM using virt-manager, add the server like below... type in the host name then click connect.
No password required.

But see doing it this way has skipped a bunch of stuff that ssh-copy-id does. This will end up with more questions later on.

I would be willing to be dollars to donuts if someone uses this they will have to change permissions on that authorized_keys file because it's not created by defualt.

Seriously just generate the key (RSA is the default):

ssh-keygen -b 4096

and copy to the server:

ssh-copy-id user@server

Yes, but this assumes you've already got SSH going and unsecure enough to do a ssh-copy-id to the server. This isn't the case for me.

But you are right, generally the ssh-copy-id is the way to go as I suppose I'm the only one here who does things securely, or this is done before securing SSH on the server.

hahahahaha. Wtf are you talking about. What does "unsecure enough to do a ssh-copy-id" possibly mean?

How did you get into that state? How do the initial keys get there?

Salt.

On a physical hypervisor initial install. How do you do that?

[JaredBusch]

@mattbagan said in KVM - Virt-Manager on a Separate VM:

Never tried it that way. I've always used:
usermod -a -G libvirt <username>

both ways get the same job done.