I am trying to connect to my EC2 instance and getting the following error.
Command I'm running: ssh -v -i key.pem ubuntu#[my instance address]
I changed the permissions on the key file to 600 as I've seen in other threads, but that didn't solve the problem.
Output I'm getting:
OpenSSH_5.9p1, OpenSSL 0.9.8r 8 Feb 2011
debug1: Reading configuration data /etc/ssh_config
debug1: /etc/ssh_config line 20: Applying options for *
debug1: Connecting to ec2-54-247-2-128.eu-west-1.compute.amazonaws.com [54.247.2.128] port 22.
debug1: Connection established.
debug1: identity file /Users/avimeir/.ssh/id_rsa type 1
debug1: identity file /Users/avimeir/.ssh/id_rsa-cert type -1
debug1: identity file /Users/avimeir/.ssh/id_dsa type -1
debug1: identity file /Users/avimeir/.ssh/id_dsa-cert type -1
debug1: Remote protocol version 2.0, remote software version OpenSSH_5.9p1 Debian-5ubuntu1
debug1: match: OpenSSH_5.9p1 Debian-5ubuntu1 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_5.9
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 ae:42:29:3d:3e:c0:a8:04:7f:19:9c:c0:52:00:a4:1e
debug1: Host 'ec2-54-247-2-128.eu-west-1.compute.amazonaws.com' is known and matches the RSA host key.
debug1: Found key in /Users/avimeir/.ssh/known_hosts:4
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
debug1: Next authentication method: publickey
debug1: Offering RSA public key: /Users/avimeir/.ssh/id_rsa
debug1: Authentications that can continue: publickey
debug1: Offering RSA public key: ninja.pem
debug1: Authentications that can continue: publickey
debug1: Trying private key: /Users/avimeir/.ssh/id_dsa
debug1: No more authentication methods to try.
Permission denied (publickey).
Be sure to check:
The SSH keypair file
The username. For example: root, ec2-user, ubuntu, ...
The hostname of your server. For example, if you stop your instance, it will get a new IP address.
If you are using Ubuntu Cloud Guest official image, you can check the Ubuntu EC2 Starter's Guide.
Managed to solve it by editing /etc/ssh_config (on OSX) and adding the following line:
ChallengeResponseAuthentication yes
Related
I'm trying to shell to an AWS instance using ssh with public key as shown here:
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-key-pairs.html#having-ec2-create-your-key-pair
https://docs.aws.amazon.com/systems-manager/latest/userguide/session-manager-working-with-sessions-start.html#sessions-start-ssh
I've read every StackOverflow post on this topic and tried everything suggested all the way down through every comment.
I've made sure to do as AWS recommends with chmod 400 my-name-nr-managed-aws-services-company-name-us-east-1.pem and the .pem file resides in the ~/.ssh directory which has 755 permissions.
My verbose output for the connection not being successful is as follows (with real addresses obscured):
~ % ssh -v -i .ssh/my-name-nr-managed-aws-services-company-name-us-east-1.pem ubuntu#ec2-1-234-567-890.compute-1.amazonaws.com
OpenSSH_8.1p1, LibreSSL 2.7.3
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 47: Applying options for *
debug1: Connecting to ec2-3-234-567-890.compute-1.amazonaws.com port 22.
debug1: Connection established.
debug1: identity file .ssh/my-name-nr-managed-aws-services-company-name-us-east-1.pem type -1
debug1: identity file .ssh/my-name-nr-managed-aws-services-company-name-us-east-1.pem-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_8.1
debug1: Remote protocol version 2.0, remote software version OpenSSH_7.6p1 Ubuntu-4ubuntu0.3
debug1: match: OpenSSH_7.6p1 Ubuntu-4ubuntu0.3 pat OpenSSH_7.0*,OpenSSH_7.1*,OpenSSH_7.2*,OpenSSH_7.3*,OpenSSH_7.4*,OpenSSH_7.5*,OpenSSH_7.6*,OpenSSH_7.7* compat 0x04000002
debug1: Authenticating to ec2-3-234-567-890.compute-1.amazonaws.com:22 as 'ubuntu'
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:vQd/zj9vB89/NevF0gtTAyM+hWVNLAs0JONpLcXvZ/I
debug1: Host 'ec2-3-234-567-890.compute-1.amazonaws.com' is known and matches the ECDSA host key.
debug1: Found key in /Users/myname/.ssh/known_hosts:12
debug1: rekey out after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: rekey in after 134217728 blocks
debug1: Will attempt key: .ssh/my-name-nr-managed-aws-services-company-name-us-east-1.pem explicit
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs=<ssh-ed25519,ssh-rsa,rsa-sha2-256,rsa-sha2-512,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: .ssh/my-name-nr-managed-aws-services-company-name-us-east-1.pem
debug1: Authentications that can continue: publickey
debug1: No more authentication methods to try.
ubuntu#ec2-1-234-567-890.compute-1.amazonaws.com: Permission denied (publickey).
I also did ssh-keygen -R 1.234.567.890 to regenerate the keys which returned
# Host 1.234.567.890 found: line 12
/Users/myname/.ssh/known_hosts updated.
Original contents retained as /Users/myname/.ssh/known_hosts.old
but that didn't help either.
Any idea what I'm missing?
I was using it without any issues. To install Nginx, PHP7, MySQL, Python, Go Lang and MongoDB, I had to change some user permissions in nginx.
Suddenly, I'm unable to ssh anymore!! I didn't touch the Amazon Console either. My colleague is also unable to ssh. I had given him the elaine.pem file
I was able to ssh using ssh -i "elaine.pem" ubuntu#13.127.4.XXX until now. No change and no spelling error.
Any thoughts?
Elaine-MacBook-Pro:key elaine$ ssh -v -i "elaine.pem" ubuntu#13.127.4.XXX
OpenSSH_6.9p1, LibreSSL 2.1.8
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 21: Applying options for *
debug1: Connecting to 13.127.4.xxx [13.127.4.xxx] port 22.
debug1: Connection established.
debug1: key_load_public: No such file or directory
debug1: identity file elaine.pem type -1
debug1: key_load_public: No such file or directory
debug1: identity file elaine.pem-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_6.9
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 13.127.4.xxx:22 as 'ubuntu'
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client chacha20-poly1305#openssh.com <implicit> none
debug1: kex: client->server chacha20-poly1305#openssh.com <implicit> none
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ecdsa-sha2-nistp256 SHA256:Z4mp+ciY2V+zjJn4G6Un3kv4A9xZ7AOZ9lQ2V9FZthw
debug1: Host '13.127.4.xxx' is known and matches the ECDSA host key.
debug1: Found key in /Users/elaine/.ssh/known_hosts:1
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
debug1: Next authentication method: publickey
debug1: Offering RSA public key: elaine.pem
debug1: Authentications that can continue: publickey
debug1: Trying private key: elaine.pem
debug1: Authentications that can continue: publickey
debug1: No more authentication methods to try.
Permission denied (publickey).
Elaine-MacBook-Pro:key elaine$
I have an AWS instance of Bitnami Wordpress.
Trying to connect using this command:
ssh -N -L 8888:127.0.0.1:80 -i wordpress.pem bitnami#52.91.239.245 -v
I get this...
OpenSSH_6.2p2, OSSLShim 0.9.8r 8 Dec 2011
debug1: Reading configuration data /etc/ssh_config
debug1: /etc/ssh_config line 20: Applying options for *
debug1: Connecting to 52.91.239.245 [52.91.239.245] port 22.
debug1: Connection established.
debug1: identity file wordpress.pem type -1
debug1: identity file wordpress.pem-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_6.2
debug1: Remote protocol version 2.0, remote software version OpenSSH_6.6.1p1 Ubuntu-2ubuntu2.8
debug1: match: OpenSSH_6.6.1p1 Ubuntu-2ubuntu2.8 pat OpenSSH*
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: 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 51:1d:50:cd:89:30:dc:7b:8d:17:85:f4:03:45:c1:54
debug1: Host '52.91.239.245' is known and matches the RSA host key.
debug1: Found key in /Users/OWNER/.ssh/known_hosts:18
debug1: ssh_rsa_verify: signature correct
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
debug1: Next authentication method: publickey
debug1: Trying private key: wordpress.pem
debug1: read PEM private key done: type RSA
debug1: Authentications that can continue: publickey
debug1: No more authentication methods to try.
Permission denied (publickey).
I have .ssh permissions as follows:
sudo chmod 700 ~/.ssh/
sudo chmod 600 ~/.ssh/*
sudo chown -R OWNER ~/.ssh/
Does this mean the publickey was not found? That it could not be read?
I deleted the instance and started over. This time I created a new .pem instead of reusing an existing one. When I created the instance with that new .pem, I got in. I think reusing the .pem may have been the problem. Thanks for the help folks!
I can't ssh to my remote server even tho I already put there my public_key. Here is the log when I did a "ssh -v ubuntu#website.com":
ssh -v ubuntu#plumbersserver.net
OpenSSH_6.2p2, OSSLShim 0.9.8r 8 Dec 2011
debug1: Reading configuration data /Users/kevinyee/.ssh/config
debug1: Reading configuration data /etc/ssh_config
debug1: /etc/ssh_config line 20: Applying options for *
debug1: Connecting to plumbersserver.net [::1] port 22.
debug1: connect to address ::1 port 22: Connection refused
debug1: Connecting to plumbersserver.net [54.206.17.8] port 22.
debug1: Connection established.
debug1: identity file /Users/kevinyee/.ssh/id_rsa type 1
debug1: identity file /Users/kevinyee/.ssh/id_rsa-cert type -1
debug1: identity file /Users/kevinyee/.ssh/id_dsa type -1
debug1: identity file /Users/kevinyee/.ssh/id_dsa-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_6.2
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*
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: 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 cf:a8:01:57:1f:f6:3f:9e:6a:2a:8f:e4:0c:ce:8d:a3
debug1: Host 'plumbersserver.net' is known and matches the RSA host key.
debug1: Found key in /Users/kevinyee/.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: 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: /Users/kevinyee/.ssh/id_rsa
debug1: Authentications that can continue: publickey
debug1: Trying private key: /Users/kevinyee/.ssh/id_dsa
debug1: No more authentication methods to try.
Permission denied (publickey).
Please help. I don't know what I'm doing wrong.
Since you are logging in as 'ubuntu' user, in the ec2 instance, your public key should be appended to the file: /home/ubuntu/.ssh/authorized_keys. If the file does not exist, create the file with your public key contents and ensure that the file permissions is set to 600.
Try these troubleshooting steps:
Ensure that your public key has been saved in the correct directory: /home/ec2-user/.ssh
Ensure your public key has the correct permissions assigned to it: 0600
chmod 0600 /home/ec2-user/.ssh/your_public_key
Ensure that you are using the correct private key when connecting by using the -i flag for ssh. ssh -i ~/.ssh/your_private_key.pem ec2-user#website.com
Make sure your private key also has the correct permissions of 0600
If you are unable to connect to the instance at all in order to verify steps 1 & 2 above, then stop the instance, detach the root volume, and attach and mount it to an available instance.
I read this post:
AWS ssh access 'Permission denied (publickey)' issue
The information there is relevant, but does not help me solve my issue. I used to be able to login to my linux instance on AWS using ec2-user using the following command:
ssh -i key.pem ec2-user#[address].compute-1.amazonaws.com from my MacBook terminal
over the past few weeks, I'm getting this error now:
"Permission denied (publickey)."
I tried
ssh -v -i key.pem ec2-user#[address].compute-1.amazonaws.com from my MacBook terminal
and I get this output:
OpenSSH_5.2p1, OpenSSL 0.9.8r 8 Feb 2011
debug1: Reading configuration data /etc/ssh_config
debug1: Connecting to [address].compute-1.amazonaws.com [address] port 22.
debug1: Connection established.
debug1: identity file key.pem type -1
debug1: Remote protocol version 2.0, remote software version OpenSSH_5.3
debug1: match: OpenSSH_5.3 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_5.2
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: Host '[address].compute-1.amazonaws.com' is known and matches the RSA host key.
debug1: Found key in [path]/.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: 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: key.pem
debug1: read PEM private key done: type RSA
debug1: Authentications that can continue: publickey
debug1: No more authentication methods to try.
Permission denied (publickey).
Any advice on what's going on? How to get around this?
I have another user account on this instance that I previously created. I am able to login with that, and sudo into the root. I just cannot login with ec2-user anymore.
Thanks!
You may have to log in as root. If using a bitnami image, login as 'bitnami'
e.g. ssh -v -i key.pem bitnami#[address].compute-1.amazonaws.com