AuthorizedKeysCommand /opt/authorized_keys_command.sh [user] failed, status 1

[SaajidMaarif]

Metadata:

• Operating System: Ubuntu 16.04.5 LTS
• Installation method: install.sh script
• AWS CLI Version: aws-cli/1.16.14 Python/2.7.12 Linux/4.4.0-1066-aws botocore/1.12.4

Hi,

I've followed all the instructions and also been through the troubleshooting steps in the previous issues raised but I'm unable to get this to work.

• I have attached the iam-ssh-policy to the instance. (Attached to an existing instance, didn't create a new ec2 instance)

• The import_users script runs properly and creates the users

• When i run ./authorized_keys_command.sh "saajid" as "nobody" manually, it returns the SSH key.

• the following lines have been added by the install.sh script to sshd_config: AuthorizedKeysCommand /opt/authorized_keys_command.sh AuthorizedKeysCommandUser nobody

• Verbose output of ssh command on client machine below

saajid:.ssh saajid$ ssh saajid@[servername] -vvv
OpenSSH_7.6p1, LibreSSL 2.6.2
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 48: Applying options for *
debug2: ssh_connect_direct: needpriv 0
debug1: Connecting to [servername] port 22.
debug1: Connection established.
debug1: key_load_public: No such file or directory
debug1: identity file /Users/saajid/.ssh/id_rsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/saajid/.ssh/id_rsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/saajid/.ssh/id_dsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/saajid/.ssh/id_dsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/saajid/.ssh/id_ecdsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/saajid/.ssh/id_ecdsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/saajid/.ssh/id_ed25519 type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/saajid/.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-4ubuntu2.4
debug1: match: OpenSSH_7.2p2 Ubuntu-4ubuntu2.4 pat OpenSSH* compat 0x04000000
debug3: fd 5 is O_NONBLOCK
debug1: Authenticating to [servername]:22 as 'saajid'
debug3: hostkeys_foreach: reading file "/Users/saajid/.ssh/known_hosts"
debug3: record_hostkey: found key type ECDSA in file /Users/saajid/.ssh/known_hosts:29
debug3: load_hostkeys: loaded 1 keys from [servername]
debug3: order_hostkeyalgs: prefer hostkeyalgs: 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,curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha256,diffie-hellman-group14-sha1,ext-info-c
debug2: host key algorithms: 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,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com
debug2: ciphers stoc: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com
debug2: MACs ctos: 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,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,zlib
debug2: compression stoc: 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,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha1
debug2: host key algorithms: ssh-rsa,rsa-sha2-512,rsa-sha2-256,ecdsa-sha2-nistp256,ssh-ed25519
debug2: ciphers ctos: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com
debug2: ciphers stoc: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com
debug2: MACs ctos: 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,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
debug2: compression stoc: 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
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
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:AXaRSk+bvL0256lf9la5A9h7+3u1Uv7cxsCz1aFjApA
debug3: hostkeys_foreach: reading file "/Users/saajid/.ssh/known_hosts"
debug3: record_hostkey: found key type ECDSA in file /Users/saajid/.ssh/known_hosts:29
debug3: load_hostkeys: loaded 1 keys from [servername]
debug3: hostkeys_foreach: reading file "/Users/saajid/.ssh/known_hosts"
debug3: record_hostkey: found key type ECDSA in file /Users/saajid/.ssh/known_hosts:29
debug3: load_hostkeys: loaded 1 keys from 13.211.9.210
debug1: Host '[servername]' is known and matches the ECDSA host key.
debug1: Found key in /Users/saajid/.ssh/known_hosts:29
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
debug1: SSH2_MSG_NEWKEYS received
debug2: set_newkeys: mode 0
debug1: rekey after 134217728 blocks
debug2: key: /Users/saajid/.ssh/saajid_mac (0x7ff705600a70), agent
debug2: key: /Users/saajid/.ssh/id_rsa (0x0)
debug2: key: /Users/saajid/.ssh/id_dsa (0x0)
debug2: key: /Users/saajid/.ssh/id_ecdsa (0x0)
debug2: key: /Users/saajid/.ssh/id_ed25519 (0x0)
debug3: send packet: type 5
debug3: receive packet: type 7
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs=<rsa-sha2-256,rsa-sha2-512>
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
debug3: start over, passed a different list publickey
debug3: preferred publickey,keyboard-interactive,password
debug3: authmethod_lookup publickey
debug3: remaining preferred: keyboard-interactive,password
debug3: authmethod_is_enabled publickey
debug1: Next authentication method: publickey
debug1: Offering public key: RSA SHA256:B8AFoPTk/d4L8hfR2VvZqhiYwDfR1P744lGQwxFaI1Q /Users/saajid/.ssh/saajid_mac
debug3: send_pubkey_test
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
debug1: Trying private key: /Users/saajid/.ssh/id_rsa
Enter passphrase for key '/Users/saajid/.ssh/id_rsa':
debug3: sign_and_send_pubkey: RSA SHA256:B8AFoPTk/d4L8hfR2VvZqhiYwDfR1P744lGQwxFaI1Q
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
debug1: Trying private key: /Users/saajid/.ssh/id_dsa
debug3: no such identity: /Users/saajid/.ssh/id_dsa: No such file or directory
debug1: Trying private key: /Users/saajid/.ssh/id_ecdsa
debug3: no such identity: /Users/saajid/.ssh/id_ecdsa: No such file or directory
debug1: Trying private key: /Users/saajid/.ssh/id_ed25519
debug3: no such identity: /Users/saajid/.ssh/id_ed25519: No such file or directory
debug2: we did not send a packet, disable method
debug1: No more authentication methods to try.
saajid@[servername]: Permission denied (publickey).

What am I missing, please help.

Thanks, Saajid

[bruno-barbosa]

@SaajidMaarif, getting the same error have you ever found the solution?

[laurrentt]

Have you tried to restart the SSH Daemon? It worked in my case.

[SaajidMaarif]

@bruno-barbosa Tried it on another ec2 instance with the same steps and it worked. So i'm not really sure what the issue was.