# Unable to ssh as centos to my ansible AWS instance Permission denied (publickey,gssapi-keyex,gssapi-with-mic). **URL:** \ **Category:** Ansible Project\ **Tags:** ubuntu, aws\ **Created:** [April 8, 2017, 8:00am UTC](https://forum.ansible.com/t/unable-to-ssh-as-centos-to-my-ansible-aws-instance-permission-denied-publickey-gssapi-keyex-gssapi-with-mic/24175 "2017-04-08T08:00:02Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![Guruprasad\_Krishnamu](https://avatars.discourse-cdn.com/v4/letter/g/59ef9b/32.png) [@Guruprasad\_Krishnamu](https://forum.ansible.com/u/Guruprasad_Krishnamu)\ **Post date:** [April 8, 2017, 8:00am UTC](https://forum.ansible.com/t/unable-to-ssh-as-centos-to-my-ansible-aws-instance-permission-denied-publickey-gssapi-keyex-gssapi-with-mic/24175/1 "2017-04-08T08:00:02Z")
Hello, I have been using ansible AWS instance on a CentOs machine for a couple of days now. However on logging in now I get this error. The machine is running fine, and I need to retrieve data from it. Any suggestions ? Thanks. Prasad prasad@prasad-Lenovo-IdeaPad-S510p:~/aws-connect-keys$ ssh -i KaaenaatKeys.pem [root@ec2-54-201-142-1.us-west-2.compute.amazonaws.com](mailto:root@ec2-54-201-142-1.us-west-2.compute.amazonaws.com) Please login as the user “centos” rather than the user “root”. Connection to [ec2-54-201-142-1.us-west-2.compute.amazonaws.com](http://ec2-54-201-142-1.us-west-2.compute.amazonaws.com) closed. prasad@prasad-Lenovo-IdeaPad-S510p:~/aws-connect-keys$ ssh -i KaaenaatKeys.pem [centos@ec2-54-201-142-1.us-west-2.compute.amazonaws.com](mailto:centos@ec2-54-201-142-1.us-west-2.compute.amazonaws.com) Permission denied (publickey,gssapi-keyex,gssapi-with-mic). Debug logs attached. prasad@prasad-Lenovo-IdeaPad-S510p:~/aws-connect-keys$ ssh -i KaaenaatKeys.pem -vvv [centos@ec2-54-201-142-1.us-west-2.compute.amazonaws.com](mailto:centos@ec2-54-201-142-1.us-west-2.compute.amazonaws.com) OpenSSH\_7.2p2 Ubuntu-4ubuntu2.1, OpenSSL 1.0.2g 1 Mar 2016 debug1: Reading configuration data /etc/ssh/ssh\_config debug1: /etc/ssh/ssh\_config line 19: Applying options for \* debug2: resolving “[ec2-54-201-142-1.us-west-2.compute.amazonaws.com](http://ec2-54-201-142-1.us-west-2.compute.amazonaws.com)” port 22 debug2: ssh\_connect\_direct: needpriv 0 debug1: Connecting to [ec2-54-201-142-1.us-west-2.compute.amazonaws.com](http://ec2-54-201-142-1.us-west-2.compute.amazonaws.com) [54.201.142.1] port 22. debug1: Connection established. debug1: key\_load\_public: No such file or directory debug1: identity file KaaenaatKeys.pem type -1 debug1: key\_load\_public: No such file or directory debug1: identity file KaaenaatKeys.pem-cert type -1 debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH\_7.2p2 Ubuntu-4ubuntu2.1 debug1: Remote protocol version 2.0, remote software version OpenSSH\_6.6.1 debug1: match: OpenSSH\_6.6.1 pat OpenSSH\_6.6.1\* compat 0x04000000 debug2: fd 3 setting O\_NONBLOCK debug1: Authenticating to [ec2-54-201-142-1.us-west-2.compute.amazonaws.com:22](http://ec2-54-201-142-1.us-west-2.compute.amazonaws.com:22) as ‘centos’ debug3: hostkeys\_foreach: reading file “/home/prasad/.ssh/known\_hosts” debug3: record\_hostkey: found key type ECDSA in file /home/prasad/.ssh/known\_hosts:65 debug3: load\_hostkeys: loaded 1 keys from [ec2-54-201-142-1.us-west-2.compute.amazonaws.com](http://ec2-54-201-142-1.us-west-2.compute.amazonaws.com) debug3: order\_hostkeyalgs: prefer hostkeyalgs: [ecdsa-sha2-nistp256-cert-v01@openssh.com](mailto:ecdsa-sha2-nistp256-cert-v01@openssh.com),ecdsa-sha2-nistp384-cert-v01@openssh.com,ecdsa-sha2-nistp521-cert-v01@openssh.com,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521 debug3: send packet: type 20 debug1: SSH2\_MSG\_KEXINIT sent debug3: receive packet: type 20 debug1: SSH2\_MSG\_KEXINIT received debug2: local client KEXINIT proposal debug2: KEX algorithms: [curve25519-sha256@libssh.org](mailto:curve25519-sha256@libssh.org),ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,ext-info-c debug2: host key algorithms: [ecdsa-sha2-nistp256-cert-v01@openssh.com](mailto:ecdsa-sha2-nistp256-cert-v01@openssh.com),ecdsa-sha2-nistp384-cert-v01@openssh.com,ecdsa-sha2-nistp521-cert-v01@openssh.com,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-ed25519-cert-v01@openssh.com,ssh-rsa-cert-v01@openssh.com,ssh-ed25519,rsa-sha2-512,rsa-sha2-256,ssh-rsa debug2: ciphers ctos: [chacha20-poly1305@openssh.com](mailto:chacha20-poly1305@openssh.com),aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com,aes128-cbc,aes192-cbc,aes256-cbc,3des-cbc debug2: ciphers stoc: [chacha20-poly1305@openssh.com](mailto:chacha20-poly1305@openssh.com),aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com,aes128-cbc,aes192-cbc,aes256-cbc,3des-cbc debug2: MACs ctos: [umac-64-etm@openssh.com](mailto:umac-64-etm@openssh.com),umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1 debug2: MACs stoc: [umac-64-etm@openssh.com](mailto:umac-64-etm@openssh.com),umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1 debug2: compression ctos: [none,zlib@openssh.com](mailto:none,zlib@openssh.com),zlib debug2: compression stoc: [none,zlib@openssh.com](mailto:none,zlib@openssh.com),zlib debug2: languages ctos: debug2: languages stoc: debug2: first\_kex\_follows 0 debug2: reserved 0 debug2: peer server KEXINIT proposal debug2: KEX algorithms: [curve25519-sha256@libssh.org](mailto:curve25519-sha256@libssh.org),ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1 debug2: host key algorithms: ssh-rsa,ecdsa-sha2-nistp256,ssh-ed25519 debug2: ciphers ctos: [aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-gcm@openssh.com](mailto:aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-gcm@openssh.com),aes256-gcm@openssh.com,chacha20-poly1305@openssh.com,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se debug2: ciphers stoc: [aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-gcm@openssh.com](mailto:aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-gcm@openssh.com),aes256-gcm@openssh.com,chacha20-poly1305@openssh.com,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se debug2: MACs ctos: [hmac-md5-etm@openssh.com](mailto:hmac-md5-etm@openssh.com),hmac-sha1-etm@openssh.com,umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-ripemd160-etm@openssh.com,hmac-sha1-96-etm@openssh.com,hmac-md5-96-etm@openssh.com,hmac-md5,hmac-sha1,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96 debug2: MACs stoc: [hmac-md5-etm@openssh.com](mailto:hmac-md5-etm@openssh.com),hmac-sha1-etm@openssh.com,umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-ripemd160-etm@openssh.com,hmac-sha1-96-etm@openssh.com,hmac-md5-96-etm@openssh.com,hmac-md5,hmac-sha1,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96 debug2: compression ctos: [none,zlib@openssh.com](mailto:none,zlib@openssh.com) debug2: compression stoc: [none,zlib@openssh.com](mailto:none,zlib@openssh.com) debug2: languages ctos: debug2: languages stoc: debug2: first\_kex\_follows 0 debug2: reserved 0 debug1: kex: algorithm: [curve25519-sha256@libssh.org](mailto:curve25519-sha256@libssh.org) debug1: kex: host key algorithm: ecdsa-sha2-nistp256 debug1: kex: server-\>client cipher: [chacha20-poly1305@openssh.com](mailto:chacha20-poly1305@openssh.com) MAC: compression: none debug1: kex: client-\>server cipher: [chacha20-poly1305@openssh.com](mailto:chacha20-poly1305@openssh.com) MAC: compression: none debug3: send packet: type 30 debug1: expecting SSH2\_MSG\_KEX\_ECDH\_REPLY debug3: receive packet: type 31 debug1: Server host key: ecdsa-sha2-nistp256 SHA256:snipped debug3: hostkeys\_foreach: reading file “/home/prasad/.ssh/known\_hosts” debug3: record\_hostkey: found key type ECDSA in file /home/prasad/.ssh/known\_hosts:65 debug3: load\_hostkeys: loaded 1 keys from [ec2-54-201-142-1.us-west-2.compute.amazonaws.com](http://ec2-54-201-142-1.us-west-2.compute.amazonaws.com) debug3: hostkeys\_foreach: reading file “/home/prasad/.ssh/known\_hosts” debug3: record\_hostkey: found key type ECDSA in file /home/prasad/.ssh/known\_hosts:66 debug3: load\_hostkeys: loaded 1 keys from 54.201.142.1 debug1: Host ‘[ec2-54-201-142-1.us-west-2.compute.amazonaws.com](http://ec2-54-201-142-1.us-west-2.compute.amazonaws.com)’ is known and matches the ECDSA host key. debug1: Found key in /home/prasad/.ssh/known\_hosts:65 debug3: send packet: type 21 debug2: set\_newkeys: mode 1 debug1: rekey after 134217728 blocks debug1: SSH2\_MSG\_NEWKEYS sent debug1: expecting SSH2\_MSG\_NEWKEYS debug3: receive packet: type 21 debug2: set\_newkeys: mode 0 debug1: rekey after 134217728 blocks debug1: SSH2\_MSG\_NEWKEYS received debug2: key: KaaenaatKeys.pem ((nil)), explicit debug3: send packet: type 5 debug3: receive packet: type 6 debug2: service\_accept: ssh-userauth debug1: SSH2\_MSG\_SERVICE\_ACCEPT received debug3: send packet: type 50 debug3: receive packet: type 51 debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic debug3: start over, passed a different list publickey,gssapi-keyex,gssapi-with-mic debug3: preferred gssapi-keyex,gssapi-with-mic,publickey,keyboard-interactive,password debug3: authmethod\_lookup gssapi-keyex debug3: remaining preferred: gssapi-with-mic,publickey,keyboard-interactive,password debug3: authmethod\_is\_enabled gssapi-keyex debug1: Next authentication method: gssapi-keyex debug1: No valid Key exchange context debug2: we did not send a packet, disable method debug3: authmethod\_lookup gssapi-with-mic debug3: remaining preferred: publickey,keyboard-interactive,password debug3: authmethod\_is\_enabled gssapi-with-mic debug1: Next authentication method: gssapi-with-mic debug1: Unspecified GSS failure. Minor code may provide more information No Kerberos credentials available debug1: Unspecified GSS failure. Minor code may provide more information No Kerberos credentials available debug1: Unspecified GSS failure. Minor code may provide more information debug1: Unspecified GSS failure. Minor code may provide more information No Kerberos credentials available debug2: we did not send a packet, disable method debug3: authmethod\_lookup publickey debug3: remaining preferred: keyboard-interactive,password debug3: authmethod\_is\_enabled publickey debug1: Next authentication method: publickey debug1: Trying private key: KaaenaatKeys.pem debug3: sign\_and\_send\_pubkey: RSA SHA256: snipped debug3: send packet: type 50 debug2: we sent a publickey packet, wait for reply debug3: receive packet: type 51 debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic debug2: we did not send a packet, disable method debug1: No more authentication methods to try. Permission denied (publickey,gssapi-keyex,gssapi-with-mic). ---
**Author:** ![balubhai555](https://avatars.discourse-cdn.com/v4/letter/b/5f9b8f/32.png) [@balubhai555](https://forum.ansible.com/u/balubhai555)\ **Post date:** [April 10, 2017, 11:30am UTC](https://forum.ansible.com/t/unable-to-ssh-as-centos-to-my-ansible-aws-instance-permission-denied-publickey-gssapi-keyex-gssapi-with-mic/24175/2 "2017-04-10T11:30:54Z")
> Hello GuruPrasad, May be Ansible’s Public copy is not done into AWS key. So please try to copy ~/.ssh/id\_rsa into AWS key. and then connection will be successful.