Eu tenho máquinas master e slave e desejo poder usar ssh sem senha entre contas de root.
No escravo eu fiz sudo su - root e passwd para configurar uma senha de root.
No escravo, editei /etc/ssh/sshd_config e adicionei PermitRootLogin yes
Isso permitiu que eu fizesse o seguinte no master:
ssh-keygen -t rsa -P '' -f ~/.ssh/id_rsa_root
cat ~/.ssh/id_rsa_root.pub >> ~/.ssh/authorized_keys
sudo chmod 600 ~/.ssh/id_rsa_root
sudo chmod 600 ~/.ssh/id_rsa_root.pub
ssh-copy-id -i $HOME/.ssh/id_rsa_root.pub root@slave
Mas agora, quando eu tento ssh root@slave , ele sempre pede uma senha e, em seguida, permite o login.
Eu tentei editar escravos /etc/ssh/sshd_config e alterando PermitRootLogin yes para PermitRootLogin without-password , mas ssh root@slave deu Permission denied .
Rasgando meu cabelo, qualquer ajuda é muito apreciada!
PS: Estou rodando o ubuntu 16.04 e faço login para root no master para fazer conexão com o slave usando sudo su - root mas eu fiz as coisas no slave como um usuário diferente (talvez isso faça diferença?)
EDIT: Eu adicionei a saída de ssh -v root@slave2 pode ajudar?
root@master:~# ssh -v root@slave2
OpenSSH_7.2p2 Ubuntu-4ubuntu1, OpenSSL 1.0.2g-fips 1 Mar 2016
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug1: Connecting to slave2 [192.168.1.2] port 22.
debug1: Connection established.
debug1: permanently_set_uid: 0/0
debug1: identity file /root/.ssh/id_rsa type 1
debug1: key_load_public: No such file or directory
debug1: identity file /root/.ssh/id_rsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /root/.ssh/id_dsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /root/.ssh/id_dsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /root/.ssh/id_ecdsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /root/.ssh/id_ecdsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /root/.ssh/id_ed25519 type -1
debug1: key_load_public: No such file or directory
debug1: identity file /root/.ssh/id_ed25519-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_7.2p2 Ubuntu-4ubuntu1
debug1: Remote protocol version 2.0, remote software version
OpenSSH_7.2p2 Ubuntu-4ubuntu1
debug1: match: OpenSSH_7.2p2 Ubuntu-4ubuntu1 pat OpenSSH* compat
x04000000
debug1: Authenticating to slave2:22 as 'root'
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: algorithm: [email protected]
debug1: kex: host key algorithm: ecdsa-sha2-nistp256
debug1: kex: server->client cipher: [email protected] MAC: <implicit> compression: none
debug1: kex: client->server cipher: [email protected] MAC: <implicit> compression: none
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ecdsa-sha2-nistp256
HA256:D8gzBgBFRg1AnBsKfrY/fVGzIXDPtA+86TZa3e7Ylms
debug1: Host 'slave2' is known and matches the ECDSA host key.
debug1: Found key in /root/.ssh/known_hosts:1
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS received
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs=<rsa-sha2-256,rsa-sha2-512>
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey,password
debug1: Next authentication method: publickey
debug1: Offering RSA public key: /root/.ssh/id_rsa
debug1: Authentications that can continue: publickey,password
debug1: Trying private key: /root/.ssh/id_dsa
debug1: Trying private key: /root/.ssh/id_ecdsa
debug1: Trying private key: /root/.ssh/id_ed25519
debug1: Next authentication method: password