Ssh Passwordless authentication for Cisco switch

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1

I am using centos 9 server for ansible and i want to connect all switch to ansible.

for single switch i am taking backup successfully.

i create group for multiple switch and i am trying to connect with ssh public key.

ann@10.2.200.49: Permission denied (publickey).

please help me on this thank you

2

Can you connect using ssh ann@10.2.200.49 using a public key?

3

How does Ansible connect to this single switch?

4

hi chris,

i want to connect to the switch with out password using rsa.pub key i am trying it was showing permission denied (public key)

5

hi Todd Lewis,

thanks for reply,

i connected ssh using password.

now i want to connect my switch without password i create a ssh key and i copied in the switch.

after i removed the ssh password authentication on switch. i selected the ssh auto-login. getting the above error

6

Are there logs on the switch that indicate why public key authentication is not working?

Is the ~/.ssh directory 0700 and the ~/.ssh/authorized_keys file 0600 and are they both owned by the user you are connecting as?

You will need to get SSH connections working before you can use SSH for Ansible.

7

drwx------. 2 root root 94 Nov 30 17:55 .ssh
and this are .ssh file permission.
drwx------. 2 root root 94 Nov 30 17:55 .
dr-xr-x—. 8 root root 4096 Dec 2 10:02 …
-rw-r–r–. 1 root root 421 Nov 30 15:04 config
-rw-------. 1 root root 2610 Nov 29 17:37 id_rsa
-rw-r–r–. 1 root root 580 Nov 29 17:37 id_rsa.pub
-rw-r–r–. 1 root root 3482 Nov 30 17:58 known_hosts
-rw-r–r–. 1 root root 3482 Nov 30 09:57 known_hosts.old
SSH connections working before you can use SSH for Ansible?
before i am using ssh username and password it was working.

8

If you want to use SSH public key authentication then you need to set it up, copy your local ~/.ssh/id_rsa.pub file to ~/.ssh/authorized_keys on the switch and make it 0600.

2 Likes
9

i connect the switch with different server (centos 8 ) it was working fine. thanks for you support