SSH asks for password even when the key has been added

I generated an ssh key for the "ansible" user and it works for all clients, but one has the SuSE (SLES) 11.4 operating system.

Content of the host-side directory ~ / .ssh:

-rw-------.  1 ansible ansible  1675 May 14  2018 id_rsa
-rw-r--r--.  1 ansible ansible   401 May 14  2018 id_rsa.pub

Host-side home directory (~ / .ssh):

drwxr-----.    2 ansible ansible       4096 Oct 14 15:25 .ssh

getenforce:

Disabled

Client side sshd_config:

RSAAuthentication yes
PubkeyAuthentication yes
AuthorizedKeysFile      %h/.ssh/authorized_keys

Content of the client-side directory ~ / .ssh:

-rw------- 1 ansible users  802 Oct 14 15:25 authorized_keys
-rw-r--r-- 1 ansible users  173 Oct 14 15:40 known_hosts

Client side directory ~ / .ssh:

drwx------ 2 ansible users  4096 Oct 14 15:40 .ssh