Pipeline git push: Host key verification failed.

[jacobdubail]

Pipeline step:

- step:
name: Deploy to staging
deployment: Staging
script:
- apt-get update && apt-get install -y unzip git
- git config user.email "<me@company.com>"
- git config user.name "<Bitbucket Pipelines>"
- git remote set-url origin ssh://${SFTP_username}@${SFTP_address}:${Port}/www/sitename/private/repo.git
- git add .
- git remote -v
- git push origin master

Error during push

+ git push origin master
Host key verification failed.
fatal: Could not read from remote repository.
Please make sure you have the correct access rights and the repository exists.

On the remote server, here is the output for ssh -vvv git@bitbucket.org 

~/.ssh$ ssh -vvv git@bitbucket.org
OpenSSH_7.2p2 Ubuntu-4ubuntu2.7, 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 "bitbucket.org" port 22
debug2: ssh_connect_direct: needpriv 0
debug1: Connecting to bitbucket.org [18.205.93.0] port 22.
debug1: Connection established.
debug1: identity file /www/sitename/.ssh/id_rsa type 1
debug1: key_load_public: No such file or directory
debug1: identity file /www/sitename/.ssh/id_rsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /www/sitename/.ssh/id_dsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /www/sitename/.ssh/id_dsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /www/sitename/.ssh/id_ecdsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /www/sitename/.ssh/id_ecdsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /www/sitename/.ssh/id_ed25519 type -1
debug1: key_load_public: No such file or directory
debug1: identity file /www/sitename/.ssh/id_ed25519-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_7.2p2 Ubuntu-4ubuntu2.7
debug1: Remote protocol version 2.0, remote software version conker_1.1.47-900564b app-130
debug1: no match: conker_1.1.47-900564b app-130
debug2: fd 3 setting O_NONBLOCK
debug1: Authenticating to bitbucket.org:22 as 'git'
debug3: hostkeys_foreach: reading file "/www/sitename/.ssh/known_hosts"
debug3: record_hostkey: found key type RSA in file /www/sitename/.ssh/known_hosts:1
debug3: load_hostkeys: loaded 1 keys from bitbucket.org
debug3: order_hostkeyalgs: prefer hostkeyalgs: ssh-rsa-cert-v01@openssh.com,rsa-sha2-512,rsa-sha2-256,ssh-rsa
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,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: ssh-rsa-cert-v01@openssh.com,rsa-sha2-512,rsa-sha2-256,ssh-rsa,ecdsa-sha2-nistp256-cert-v01@openssh.com,ecdsa-sha2-nistp384-cert-v01@openssh.com,ecdsa-sha2-nistp521-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-ed25519
debug2: ciphers ctos: 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,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,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-group14-sha1,diffie-hellman-group1-sha1
debug2: host key algorithms: ssh-dss,ssh-rsa
debug2: ciphers ctos: aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,chacha20-poly1305@openssh.com,arcfour256,arcfour128
debug2: ciphers stoc: aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,chacha20-poly1305@openssh.com,arcfour256,arcfour128
debug2: MACs ctos: hmac-sha2-256-etm@openssh.com,hmac-sha2-256,hmac-sha1,hmac-sha1-96
debug2: MACs stoc: hmac-sha2-256-etm@openssh.com,hmac-sha2-256,hmac-sha1,hmac-sha1-96
debug2: compression ctos: none
debug2: compression stoc: none
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: ssh-rsa
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: ssh-rsa SHA256:zzXQOXSRBEiUtuE8AikJYKwbHaxvSc0ojez9YXaGp1A
debug3: hostkeys_foreach: reading file "/www/sitename/.ssh/known_hosts"
debug3: record_hostkey: found key type RSA in file /www/sitename/.ssh/known_hosts:1
debug3: load_hostkeys: loaded 1 keys from bitbucket.org
debug3: hostkeys_foreach: reading file "/www/sitename/.ssh/known_hosts"
debug3: record_hostkey: found key type RSA in file /www/sitename/.ssh/known_hosts:3
debug3: load_hostkeys: loaded 1 keys from 18.205.93.0
debug1: Host 'bitbucket.org' is known and matches the RSA host key.
debug1: Found key in /www/sitename/.ssh/known_hosts:1
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: /www/sitename/.ssh/id_rsa (0x563389a548a0)
debug2: key: /www/sitename/.ssh/id_dsa ((nil))
debug2: key: /www/sitename/.ssh/id_ecdsa ((nil))
debug2: key: /www/sitename/.ssh/id_ed25519 ((nil))
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
debug3: start over, passed a different list publickey
debug3: preferred gssapi-keyex,gssapi-with-mic,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 RSA public key: /www/sitename/.ssh/id_rsa
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: /www/sitename/.ssh/id_dsa
debug3: no such identity: /www/sitename/.ssh/id_dsa: No such file or directory
debug1: Trying private key: /www/sitename/.ssh/id_ecdsa
debug3: no such identity: /www/sitename/.ssh/id_ecdsa: No such file or directory
debug1: Trying private key: /www/sitename/.ssh/id_ed25519
debug3: no such identity: /www/sitename/.ssh/id_ed25519: No such file or directory
debug2: we did not send a packet, disable method
debug1: No more authentication methods to try.
Permission denied (publickey).

I've confirmed (also recreated keys) the key is present on the remote host in ~/.ssh/authorized_keys.

Thanks!

Jacob

[Mark Street]

My understanding of this error is that the client cannot verify the identity of the remote host, therefore you need the entry in ~/.ssh/known_hosts for this to work.