I am attempting to ssh into a a EC2 machine and ssh has stopped working. I'm not sure how I broke it but it is now unable to connect. I already tried creating a new key but it is not helping.
$ ssh -vT ****#****.****-2.compute.amazonaws.com
OpenSSH_6.6.1, OpenSSL 1.0.1i 6 Aug 2014
debug1: Reading configuration data /etc/ssh_config
debug1: Connecting to ec2-****.****-2.compute.amazonaws.com [****] port 22.
debug1: Connection established.
debug1: identity file /home/Brad/.ssh/id_rsa type 1
debug1: identity file /home/Brad/.ssh/id_rsa-cert type -1
debug1: identity file /home/Brad/.ssh/id_dsa type -1
debug1: identity file /home/Brad/.ssh/id_dsa-cert type -1
debug1: identity file /home/Brad/.ssh/id_ecdsa type -1
debug1: identity file /home/Brad/.ssh/id_ecdsa-cert type -1
debug1: identity file /home/Brad/.ssh/id_ed25519 type -1
debug1: identity file /home/Brad/.ssh/id_ed25519-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_6.6.1
debug1: Remote protocol version 2.0, remote software version OpenSSH_6.2
debug1: match: OpenSSH_6.2 pat OpenSSH* compat 0x04000000
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client aes128-ctr hmac-md5-etm#openssh.com none
debug1: kex: client->server aes128-ctr hmac-md5-etm#openssh.com none
debug1: sending SSH2_MSG_KEX_ECDH_INIT
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ECDSA ****
debug1: Host '****.****-2.compute.amazonaws.com' is known and matches the ECDSA host key.
debug1: Found key in /home/Brad/.ssh/known_hosts:1
debug1: ssh_ecdsa_verify: signature correct
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
debug1: Next authentication method: publickey
debug1: Offering RSA public key: /home/Brad/.ssh/id_rsa
debug1: Authentications that can continue: publickey
debug1: Trying private key: /home/Brad/.ssh/id_dsa
debug1: Trying private key: /home/Brad/.ssh/id_ecdsa
debug1: Trying private key: /home/Brad/.ssh/id_ed25519
debug1: No more authentication methods to try.
Permission denied (publickey).
I have replaced all of the personal info with *.
Thank you
Nowhere in your command you are referring the ssh private key. Try running command as below:
ssh -i <path_to_the_private_key> ubuntu#<EC2_Hostname>
In above command, note that I have used the username as ubuntu. Depending on which AMI you are using, you should change the username which corresponds to that AMI.
Related
I made git server on digital ocean and work fine but I want to change authorization from password to SSH key.
Now it's working nice for SSH/SFTP with this server and also with my pi. But git don't want to cooperate.
I have:
/home/git/.ssh on permission 700
/home/git/.ssh/authorized_keys on 644
Shell for git: /usr/bin/git-shell
And on local machine set .ssh/config to load private key from encrypted pendrive
isaac#Isaac-Debian:~$ ssh -vT server
OpenSSH_7.4p1 Debian-10+deb9u3, OpenSSL 1.0.2l 25 May 2017
debug1: Reading configuration data /home/isaac/.ssh/config
debug1: /home/isaac/.ssh/config line 1: Applying options for git-server1.iofist.de
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug1: Connecting to serwer ******** port 22.
debug1: Connection established.
debug1: key_load_public: No such file or directory
debug1: identity file /home/isaac/secret/server1git type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/isaac/secret/server1git-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_7.4p1 Debian-10+deb9u3
debug1: Remote protocol version 2.0, remote software version OpenSSH_7.4p1 Debian-10+deb9u2
debug1: match: OpenSSH_7.4p1 Debian-10+deb9u2 pat OpenSSH* compat 0x04000000
debug1: Authenticating to server:22 as 'git'
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: algorithm: curve25519-sha256
debug1: kex: host key algorithm: ecdsa-sha2-nistp256
debug1: kex: server->client cipher: chacha20-poly1305#openssh.com MAC: <implicit> compression: none
debug1: kex: client->server cipher: chacha20-poly1305#openssh.com MAC: <implicit> compression: none
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ecdsa-sha2-nistp256 SHA256:LyaAW9P8EIqkyuf/lEuEIKWTTeu2/3XbOyxx8TmPXa8
debug1: Host 'server1.iofist.de' is known and matches the ECDSA host key.
debug1: Found key in /home/isaac/.ssh/known_hosts:3
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs=<ssh-ed25519,ssh-rsa,ssh-dss,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521>
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey
debug1: Next authentication method: publickey
debug1: Trying private key: /home/isaac/secret/server1git
Enter passphrase for key '/home/isaac/secret/server1git':
debug1: Authentications that can continue: publickey
debug1: No more authentication methods to try.
Permission denied (publickey).
debug1: Trying private key: /home/isaac/secret/server1git
Enter passphrase for key '/home/isaac/secret/server1git':
debug1: Authentications that can continue: publickey
debug1: No more authentication methods to try.
Permission denied (publickey).
At first it still wants you to have public key, so you must create it too. Second make sure you run ssh as a root. It will resolve the conflicts with Permission denied (publickey).
I just order a VPS in Vultr, and want set to ssh without passwords. after configured the ssh key things, I think it should be work, but failed.
yes, I have multiple ssh configures like github, gitlab or some other things and this is the configure file
Host gitlab
HostName cd.i.foo.com
IdentityFile ~/.ssh/id_rsa
Host github
HostName github.com
IdentityFile ~/.ssh/id_rsa_gayhub
Host vultr
HostName 198.13.59.103
Port 22
User root
IdentityFile ~/.ssh/id_rsa_vultr
but when I try with specified path ssh root#198.13.59.103 -i ~/.ssh/id_rsa_vultr, it can work!!!
below is some more log with ssh -v -v root#198.13.59.103
OpenSSH_7.6p1, LibreSSL 2.6.2
debug1: Reading configuration data /Users/xdguo/.ssh/config
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 48: Applying options for *
debug1: Connecting to 198.13.59.103 port 22.
debug1: Connection established.
debug1: identity file /Users/xdguo/.ssh/id_rsa type 0
debug1: key_load_public: No such file or directory
debug1: identity file /Users/xdguo/.ssh/id_rsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/xdguo/.ssh/id_dsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/xdguo/.ssh/id_dsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/xdguo/.ssh/id_ecdsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/xdguo/.ssh/id_ecdsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/xdguo/.ssh/id_ed25519 type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/xdguo/.ssh/id_ed25519-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_7.6
debug1: Remote protocol version 2.0, remote software version OpenSSH_7.2p2 Ubuntu-4ubuntu2.2
debug1: match: OpenSSH_7.2p2 Ubuntu-4ubuntu2.2 pat OpenSSH* compat 0x04000000
debug1: Authenticating to 198.13.59.103:22 as 'root'
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: algorithm: curve25519-sha256#libssh.org
debug1: kex: host key algorithm: ecdsa-sha2-nistp256
debug1: kex: server->client cipher: chacha20-poly1305#openssh.com MAC: <implicit> compression: none
debug1: kex: client->server cipher: chacha20-poly1305#openssh.com MAC: <implicit> compression: none
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ecdsa-sha2-nistp256 SHA256:s8qKj8CKXc6tp7zmVV32hiqHvdrxk46JVJQlQfpOQ0Q
debug1: Host '198.13.59.103' is known and matches the ECDSA host key.
debug1: Found key in /Users/xdguo/.ssh/known_hosts:40
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: rekey after 134217728 blocks
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 public key: RSA SHA256:LBGwqZmXcUwd6kqIuDAxIj+jbPBeLbU1uwrxN1mQRKQ /Users/xdguo/.ssh/id_rsa
debug1: Authentications that can continue: publickey,password
debug1: Trying private key: /Users/xdguo/.ssh/id_dsa
debug1: Trying private key: /Users/xdguo/.ssh/id_ecdsa
debug1: Trying private key: /Users/xdguo/.ssh/id_ed25519
debug1: Next authentication method: password
root#198.13.59.103's password:
I think I spend lots of time here, it really maked me confused, thanks in advance for any help
ssh -v -v root#198.13.59.103 would not work, as it would default to id_rsa.
You need to test:
ssh -Tvv vultr
Only that "URL" (vultr) would be the equivalent of ssh root#198.13.59.103 -i ~/.ssh/id_rsa_vultr: it would find everything it needs in your ~/.ssh/config, under the Host vultr entry.
Doesn't look like it accepts an RSA-signed key.
Look at these lines:
debug1: Trying private key: /Users/xdguo/.ssh/id_dsa
debug1: Trying private key: /Users/xdguo/.ssh/id_ecdsa
debug1: Trying private key: /Users/xdguo/.ssh/id_ed25519
It's looking for a private key signed with DSA instead.
Try again and create a private-public pair signed with DSA instead. (No need to remove your other private key; you can have as many as you want of as many different types as you want on your machine.)
I have configure ssh-host-config in cygwin
cygcheck (cygwin) 2.4.1..
When I have setup ssh-host-config on windows 7 , ssh login is working to my system.afer reboot of System ssh loging is not working and localhost checking is failed with below logs.
Please help if you have solved this issue.
ssh -v localhost
OpenSSH_7.1p2, OpenSSL 1.0.2f 28 Jan 2016
debug1: Reading configuration data /etc/ssh_config
debug1: Connecting to localhost [127.0.0.1] port 22.
debug1: Connection established.
debug1: identity file /home/psing/.ssh/id_rsa type 1
debug1: key_load_public: No such file or directory
debug1: identity file /home/psing/.ssh/id_rsa-cert type -1
debug1: identity file /home/psing/.ssh/id_dsa type 2
debug1: key_load_public: No such file or directory
debug1: identity file /home/psing/.ssh/id_dsa-cert type -1
debug1: identity file /home/psing/.ssh/id_ecdsa type 3
debug1: key_load_public: No such file or directory
debug1: identity file /home/psing/.ssh/id_ecdsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/psing/.ssh/id_ed25519 type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/psing/.ssh/id_ed25519-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_7.1
debug1: Remote protocol version 2.0, remote software version OpenSSH_7.1
debug1: match: OpenSSH_7.1 pat OpenSSH* compat 0x04000000
debug1: Authenticating to localhost:22 as 'psing'
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client chacha20-poly1305#openssh.com none
debug1: kex: client->server chacha20-poly1305#openssh.com none
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ecdsa-sha2-nistp256 SHA256:Khz11YkVERoV1mlVERovPEm/x/AeLaUJveN49ig+Ag0
debug1: Host 'localhost' is known and matches the ECDSA host key.
debug1: Found key in /home/psing/.ssh/known_hosts:4
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
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/psing/.ssh/id_rsa
debug1: Authentications that can continue: publickey,password,keyboard-interactive
debug1: Skipping ssh-dss key /home/psing/.ssh/id_dsa for not in PubkeyAcceptedKeyTypes
debug1: Offering ECDSA public key: /home/psing/.ssh/id_ecdsa
debug1: Authentications that can continue: publickey,password,keyboard-interactive
debug1: Trying private key: /home/psing/.ssh/id_ed25519
debug1: Next authentication method: keyboard-interactive
debug1: Authentications that can continue: publickey,password,keyboard-interactive
debug1: Next authentication method: password
psing#localhost's password:
Username is case sensitive.
The username was created in .shh directory was case sensitive.
So when login to SSH host system, careful with username created in in SSH directory.
I am running a sch command and getting the following error, can anyone tell me what is that?
xxxxxxxxx#ubuntu:~/Downloads$ sudo scp -v "word_count.jar" ubuntu#54.68.0.10:/usr/
Executing: program /usr/bin/ssh host 54.68.0.10, user ubuntu, command scp -v -t /usr/
OpenSSH_6.6.1, 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 54.68.0.10 [54.68.0.10] port 22.
debug1: Connection established.
debug1: permanently_set_uid: 0/0
debug1: identity file /root/.ssh/id_rsa type -1
debug1: identity file /root/.ssh/id_rsa-cert type -1
debug1: identity file /root/.ssh/id_dsa type -1
debug1: identity file /root/.ssh/id_dsa-cert type -1
debug1: identity file /root/.ssh/id_ecdsa type -1
debug1: identity file /root/.ssh/id_ecdsa-cert type -1
debug1: identity file /root/.ssh/id_ed25519 type -1
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_6.6.1p1 Ubuntu-2ubuntu2
debug1: Remote protocol version 2.0, remote software version OpenSSH_6.6.1p1 Ubuntu-2ubuntu2
debug1: match: OpenSSH_6.6.1p1 Ubuntu-2ubuntu2 pat OpenSSH_6.6.1* compat 0x04000000
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client aes128-ctr hmac-md5-etm#openssh.com none
debug1: kex: client->server aes128-ctr hmac-md5-etm#openssh.com none
debug1: sending SSH2_MSG_KEX_ECDH_INIT
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ECDSA e3:5f:e0:7e:be:e4:ca:bd:a3:51:de:12:11:a9:e0:22
debug1: Host '54.68.0.10' is known and matches the ECDSA host key.
debug1: Found key in /root/.ssh/known_hosts:2
debug1: ssh_ecdsa_verify: signature correct
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
debug1: Next authentication method: publickey
debug1: Trying private key: /root/.ssh/id_rsa
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: No more authentication methods to try.
Permission denied (publickey).
lost connection
I am basically trying to send a file to a Amazon EC2 machine that runs Ubuntu from my local machine.
In most cases, EC2 nodes are configured to require key authentication using an identity file.
That is why your debug output ends with:
debug1: Authentications that can continue: publickey
debug1: Next authentication method: publickey
debug1: Trying private key: /root/.ssh/id_rsa
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: No more authentication methods to try.
Permission denied (publickey).
Locate the identity file and then issue your scp command as:
scp -vi identity_file.pem word_count.jar ubuntu#54.68.0.10:/usr/
I'm trying to connect to an embedded board of mine through ssh. But upon trying to connect through ssh -v -l root user#xx.xx.xx.xx, I get a series of debug comments:
dico#lithya:~$ sudo ssh -v -l root dico#foxboard2
OpenSSH_5.9p1 Debian-5ubuntu1, OpenSSL 1.0.1 14 Mar 2012
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 22: Applying options for *
debug1: Connecting to foxboard2 [10.251.145.180] port 22.
debug1: Connection established.
debug1: permanently_set_uid: 0/0
debug1: identity file /root/.ssh/id_rsa type -1
debug1: identity file /root/.ssh/id_rsa-cert type -1
debug1: identity file /root/.ssh/id_dsa type -1
debug1: identity file /root/.ssh/id_dsa-cert type -1
debug1: identity file /root/.ssh/id_ecdsa type -1
debug1: identity file /root/.ssh/id_ecdsa-cert type -1
debug1: Remote protocol version 2.0, remote software version OpenSSH_5.5p1 Debian-6
debug1: match: OpenSSH_5.5p1 Debian-6 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_5.9p1 Debian-5ubuntu1
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client aes128-ctr hmac-md5 none
debug1: kex: client->server aes128-ctr hmac-md5 none
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
debug1: Server host key: RSA 18:14:33:1e:88:5f:ad:13:78:9f:36:10:b9:d2:27:e4
debug1: Host 'foxboard2' is known and matches the RSA host key.
debug1: Found key in /root/.ssh/known_hosts:1
debug1: ssh_rsa_verify: signature correct
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
debug1: Next authentication method: publickey
debug1: Trying private key: /root/.ssh/id_rsa
debug1: Trying private key: /root/.ssh/id_dsa
debug1: Trying private key: /root/.ssh/id_ecdsa
debug1: No more authentication methods to try.
Permission denied (publickey,password).
The connection is being established through port 22 so that isn't the problem. So, clearly there is a problem with public/private key authentication. Therefore, how can I make sure that the private/public keys through both my machine and the board are in sync? Or better yet, how do I solve this issue or completely remove any keys?
UPDATE
I've tried to connect to the board by specifying no public key authentication by ssh -o PubkeyAuthentication=no dico#foxboard2, but now it's asking me for a password. I've checked the site but the password I type is incorrect. How can I remove a password request?
You can copy your public key to the server using:
ssh-copy-id user#xx.xx.xx.xx
It is always better to use keys than passwords.
Make sure your ~/.ssh directory is set to mode 700 (chmod 700 ~/.ssh) and your ~/.ssh/authorized_keys is set to mode 600 (chmod 600 ~/.ssh/authorized_keys).
In your /etc/ssh/sshd_config file set PasswordAuthentication no to turn off password logins.