Let user provide diagnose information

check SSH Configuration is fine

ssh user v_lutyi

ssh user v_lutyi authentication-type rsa

ssh user v_lutyi assign rsa-key v_lutyi_rsa_key

ssh user v_lutyi service-type all

ssh user vit_lutyi

ssh user vit_lutyi authentication-type rsa

Check RSA due to user Rsa certification is fine 

rsa peer-public-key v_lutyi_rsa_key

 public-key-code begin

  30820109

    02820100

Check the aaa authentication and find the following privilege configured as 0.

aaa

 authentication-scheme default

 authentication-scheme radius

  authentication-mode radius

 authorization-scheme default

 accounting-scheme default

 local-aaa-user password policy administrator

  password history record number 0

  password expire 0

 domain default

  authentication-scheme radius

  radius-server default

 domain default_admin

  authentication-scheme default

 local-user admin password irreversible-cipher $1a$^k~:)_a5D~$}LmtLIOF$=Zr1B!w,w3Qg"nzPrFim$hm9"DL6&H=$

 local-user admin privilege level 15

 local-user admin service-type terminal http

 local-user v_lutyi password irreversible-cipher $1a$$IoD%bQG;N$h-N>'X.7(DSta68<E@JGsR2"VC*O2GgWr|Q0kyC,$

 local-user v_lutyi privilege level 0

 local-user v_lutyi service-type terminal ssh http

Found the following privilege is 0, try to modify to 15

user-interface con 0

 authentication-mode aaa

user-interface vty 0 4

 authentication-mode aaa

 protocol inbound all

user-interface vty 16 20

 authentication-mode aaa

 protocol inbound all

if the account is RSA authentication, you can only obtain the user level from vty, so you need to add command： user privilege level 3   under vty.