!!!! Read before starting: if ansible run as root >>>>> use root's id_rsa file !!!!

1- create the Private key & Public key ( .pub) on the Client: ssh-keygen
2- copy the public key to the server: ssh-copy-id or just a sftp
3- To set up SSH agent to avoid retyping passwords, you can do:
4- SSH test ( will ask for the passphrase once!)
5- check the Local keys:
6- check the Remote keys:

1- create the private & Public key on the Client:

ssh-keygen ( press enter + enter the passphrase )

ssh-keygen

passphrase = Juniper1  ( same as: root/Juniper1, because is easier to remember) 

/project # ssh-keygen

!!!!!  default will use: root 
!!!!!  and will put it in /root/.ssh/ 


/project # ssh-keygen -t rsa  -f /root/.ssh/id_rsa -P Juniper1 -C root
Generating public/private rsa key pair.
Your identification has been saved in /root/.ssh/id_rsa.
Your public key has been saved in /root/.ssh/id_rsa.pub.
The key fingerprint is:
SHA256:5O9zJGCqTGXyjvintT4ZjzFD7P0pYz6bwWMRPFYtYeY root
The key's randomart image is:
+---[RSA 2048]----+
|          =o     |
|       . =. .    |
|     .  * E.     |
|    . =+oo       |
|     B +S.       |
|    . O..o. .    |
|   + +.O=..+     |
|  . +.*o*=+ .    |
|   .o+o++=.o     |
+----[SHA256]-----+

id_rsa.pub on the vMX

Key on the vMX  ( once copied )

root@vMX1% ls /var/home/ansible/:
.ssh            id_rsa.pub

root@vMX1% more /var/home/ansible/id_rsa.pub
ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC/DLTV+Qzxxxxxxxxxxxxxx6egBTuBB+60d ansible

>>> notice the "root" at the end of the public key  <<<<<<<

show keys

/project # ls /root/.ssh/
id_rsa       id_rsa.pub   known_hosts
/project #
/project # more /root/.ssh/id_rsa.pub
ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABxxxxxxxxxxxxxxxxxxxxxxxxxxAbguhcbH root


/project # more /root/.ssh/id_rsa
-----BEGIN RSA PRIVATE KEY-----
Proc-Type: 4,ENCRYPTED
DEK-Info: AES-128-CBC,F14E90E60C8CB07240DBA331EB53B03B
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-----END RSA PRIVATE KEY-----
/project #

RSA:

-Asymmetric Encryption: Private and Public key
-#Diffie-Hellman
-2,048 bits (or 617 decimal digits )
-Rivest-Shamir-Adleman

Private Key: AES-128-CBC ???
AES:

-Symmetric Encryption Algorithms
-Block cipher ( 128-bit block message + 128-bit key) >> 128-bit cipher text
- Advanced Encryptiuon Standard

2- copy the public key to the server:

ssh-copy-id ansible@192.168.99.11

or just copy the file using ( if ssh-copy-id not supported ):

sftp ansible@192.168.99.11 ( then put /project/id_rsa.pub /var/home/ansible/id_rsa.pub )

( or with sftp tool like mobaxterm )

sftp ansible@192.168.99.11

/project # sftp root@192.168.99.11
root@192.168.99.11's password:
Connected to 192.168.99.11.
sftp> put /root/.ssh/id_rsa.pub  /root/.ssh/id_rsa.pub
Uploading /root/.ssh/id_rsa.pub to /root/.ssh/id_rsa.pub
/root/.ssh/id_rsa.pub                                                       100%  386   502.9KB/s   0.4KB/s   00:00

sftp> ls .ssh/
id_rsa.pub

sftp> pwd
Remote working directory: /root

sftp> exit
/project #

after reboot

After a reboot of the server the key may change, will need to be reload on the vMX!

Check: after the ssh-copy-id, on the remote server: before/after ( /root/.ddh or /home/<username>/.ssh/ )

3- To set up SSH agent to avoid retyping passwords, you can do:

http://docs.ansible.com/ansible/intro_getting_started.html

$ ssh-agent bash
$ ssh-add ~/.ssh/id_rsa #here you load the Private key to be used

-l Lists fingerprints of all identities currently represented by the agent.

[root@hp8300 ~]# ssh-add -l
2048 48:54:e7:a8:d8:cf:79:23:0d:f7:dd:9a:fc:6c:c5:d3 /root/.ssh/id_rsa (RSA)

-L Lists public key parameters of all identities currently represented by the agent.

[root@hp8300 ~]# ssh-add -L

ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCyKQ+IXr/yiLt7N/SSh4++V8G3K0ZoU1Pi/M85D/5Gtuh6kq6DAqk/F/lUxc0QFZNVGB9r1fCyVtwuGVhxaImXbziB0gRbBG2uclwwH0bbQUDNm+MJ5QtXjRGCmelNa5DpzfdVI8MzkJN+TI+9PJm1CuuyfBIId554IiFOKsCmt8ORCkU4X+zdXkwZeMv+7jW9sqgYHbEU7m3DU1goJYko8mKMZabpkDUu1sxktGXgMEb3uanID5ViV4VSSxv8c9yVe896cXTmZBra0Dq2NU6WWRWe/fvcukeIO5knNiGTBCpbgpNZM3u11rYbzni/Nun7oKDqBg6+aO4EI0tDn4ZP /root/.ssh/id_rsa

ssh-agent and ssh-add

/project # ssh-agent ash

passphrase is Juniper1 ( just because it's easier )

/project # ssh-add /root/.ssh/id_rsa
Enter passphrase for /root/.ssh/id_rsa:
Identity added: /root/.ssh/id_rsa (/root/.ssh/id_rsa)


/project # ssh-add -l
2048 SHA256:5O9zJxxxxxxxxxxxxxxxxxxxxxxxxxxxxxY /root/.ssh/id_rsa (RSA)


/project # ssh-add -L
ssh-rsa AAAAB3NzaC1yc2EAAxxxxxxxxxxxVLOqaPmqAbguhcbH /root/.ssh/id_rsa


/project # ssh root@192.168.99.11
--- JUNOS 12.1R1.9 built 2012-03-24 12:52:33 UTC
root@vMX1%

public key on vMX

root@vMX1% ls /root/.ssh/
authorized_keys id_rsa.pub      known_hosts


set system root-authentication load-key-file /root/.ssh/id_rsa.pub

2- Create ssh key for Ansible

!!!! Read before starting: if ansible run as root >>>>> use root's id_rsa file !!!!

1- create the Private key & Public key ( .pub) on the Client: ssh-keygen2- copy the public key to the server: ssh-copy-id or just a sftp3- To set up SSH agent to avoid retyping passwords, you can do:4- SSH test ( will ask for the passphrase once!)5- check the Local keys:6- check the Remote keys:

1- create the private & Public key on the Client:

RSA:

Private Key: AES-128-CBC ???AES:

3- To set up SSH agent to avoid retyping passwords, you can do:

4- SSH test ( will ask for the passphrase once!)

5- check the Local keys:

6- check the Remote keys:

Private Key: AES-128-CBC ???
AES: