Estou aprendendo sobre o Hadoop e tentando criar o SSH sem senha seguindo o procedimento definido no livro: Hadoop: The Definitive guide
Configurando o SSH
O modo pseudodistribuído é apenas um caso especial do modo totalmente distribuído em que
o host (único) é localhost, por isso precisamos ter certeza de que podemos SSH para localhost e
faça o login sem ter que digitar uma senha.
Primeiro, verifique se o SSH está instalado e se um servidor está em execução (I
Não tenho certeza sobre isso, o que eles significam). No Ubuntu, por exemplo,
isso é conseguido com:
sudo apt-get install ssh
Depois, para ativar o login sem senha, gere uma nova chave SSH com uma frase secreta vazia:
ssh-keygen -t rsa -P '' -f ~/.ssh/id_rsa
cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys
Você também pode precisar executar ssh-add se estiver executando o ssh-agent.Test com o qual você pode se conectar:
ssh localhost
Se for bem sucedido, não deverá digitar uma senha.
Tudo parece estar funcionando bem, mas ainda pede senha. Eu estou dando minha senha de login, que eu também uso para acesso root. mas não funciona de todo. Por favor sugira.
Adicionando mais informações. Eu apaguei a chave antiga e adicionei nova.
cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys
As permissões do meu arquivo depois disso
-rw-rw-r-- 1 incredible incredible 403 मई 24 17:16 authorized_keys
-rw------- 1 incredible incredible 1679 मई 23 23:08 id_rsa
-rw-r--r-- 1 incredible incredible 403 मई 23 23:08 id_rsa.pub
-rw-r--r-- 1 incredible incredible 444 मई 24 17:12 known_hosts
depois de alterar a permissão de Authorized_key, é
-rw------- 1 incredible incredible 403 मई 24 17:16 authorized_keys
-rw------- 1 incredible incredible 1679 मई 23 23:08 id_rsa
-rw-r--r-- 1 incredible incredible 403 मई 23 23:08 id_rsa.pub
-rw-r--r-- 1 incredible incredible 444 मई 24 17:12 known_hosts
Mas mesmo depois disso, ele está me pedindo senha quando eu faço ssh localhost
Adicionando mais informações de ssh -v localhost
feitas por @heemayl
incredible@incredible:~$ ssh -v localhost
OpenSSH_6.7p1 Ubuntu-5ubuntu1, OpenSSL 1.0.1f 6 Jan 2014
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug1: Connecting to localhost [127.0.0.1] port 22.
debug1: Connection established.
debug1: identity file /home/incredible/.ssh/id_rsa type 1
debug1: key_load_public: No such file or directory
debug1: identity file /home/incredible/.ssh/id_rsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/incredible/.ssh/id_dsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/incredible/.ssh/id_dsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/incredible/.ssh/id_ecdsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/incredible/.ssh/id_ecdsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/incredible/.ssh/id_ed25519 type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/incredible/.ssh/id_ed25519-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_6.7p1 Ubuntu-5ubuntu1
debug1: Remote protocol version 2.0, remote software version OpenSSH_6.7p1 Ubuntu-5ubuntu1
debug1: match: OpenSSH_6.7p1 Ubuntu-5ubuntu1 pat OpenSSH* compat 0x04000000
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client aes128-ctr [email protected] none
debug1: kex: client->server aes128-ctr [email protected] none
debug1: sending SSH2_MSG_KEX_ECDH_INIT
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ECDSA 3c:e1:36:10:30:19:b3:e1:43:73:a5:6c:76:9e:24:67
debug1: Host 'localhost' is known and matches the ECDSA host key.
debug1: Found key in /home/incredible/.ssh/known_hosts:1
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: Roaming not allowed by server
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey,password,keyboard-interactive
debug1: Next authentication method: publickey
debug1: Offering RSA public key: /home/incredible/.ssh/id_rsa
debug1: Authentications that can continue: publickey,password,keyboard-interactive
debug1: Trying private key: /home/incredible/.ssh/id_dsa
debug1: Trying private key: /home/incredible/.ssh/id_ecdsa
debug1: Trying private key: /home/incredible/.ssh/id_ed25519
debug1: Next authentication method: keyboard-interactive
debug1: Authentications that can continue: publickey,password,keyboard-interactive
debug1: Next authentication method: password
incredible@localhost's password:
@heemayl: segue a saída de ssh -vvv localhost
debug1: Offering RSA public key: /home/incredible/.ssh/id_rsa
debug3: send_pubkey_test
debug2: we sent a publickey packet, wait for reply
debug1: Authentications that can continue: publickey,password,keyboard-interactive
debug1: Offering RSA public key: incredible@incredible
debug3: send_pubkey_test
debug2: we sent a publickey packet, wait for reply
debug1: Authentications that can continue: publickey,password,keyboard-interactive
debug1: Trying private key: /home/incredible/.ssh/id_dsa
debug3: no such identity: /home/incredible/.ssh/id_dsa: No such file or directory
debug1: Trying private key: /home/incredible/.ssh/id_ecdsa
debug3: no such identity: /home/incredible/.ssh/id_ecdsa: No such file or directory
debug1: Trying private key: /home/incredible/.ssh/id_ed25519
debug3: no such identity: /home/incredible/.ssh/id_ed25519: No such file or directory
debug2: we did not send a packet, disable method
debug3: authmethod_lookup keyboard-interactive
debug3: remaining preferred: password
debug3: authmethod_is_enabled keyboard-interactive
debug1: Next authentication method: keyboard-interactive
debug2: userauth_kbdint
debug2: we sent a keyboard-interactive packet, wait for reply
debug1: Authentications that can continue: publickey,password,keyboard-interactive
debug3: userauth_kbdint: disable: no info_req_seen
debug2: we did not send a packet, disable method
debug3: authmethod_lookup password
debug3: remaining preferred:
debug3: authmethod_is_enabled password
debug1: Next authentication method: password
incredible@localhost's password: