Ssh

SSH 因身份驗證失敗次數過多而中止

  • July 27, 2021

我正在嘗試執行這個簡單的配置腳本，但在執行命令vagrant up時遇到錯誤。vagrant provision

我讀到我需要創建一個/etc/ansible/hosts我已經完成的文件，並用以下內容填充它：

[vagrant]
192.168.222.111

我的 SSH 配置（刪除了一些細節）：

Host default
HostName 127.0.0.1
User vagrant
Port 2222
UserKnownHostsFile /dev/null
StrictHostKeyChecking no
PasswordAuthentication no
IdentityFile /Users/ashleyconnor/.vagrant.d/insecure_private_key
IdentitiesOnly yes
LogLevel FATAL

Host            server
HostName        XXX.XXX.XXX.XXX
User            ash
PreferredAuthentications publickey
IdentityFile    ~/.ssh/ash_ovh

Host            deployer
HostName        XXX.XXX.XXX.XXX
User            deployer
PreferredAuthentications publickey
IdentityFile    ~/.ssh/deployer_ovh

Host            bitbucket.org
PreferredAuthentications publickey
IdentityFile    ~/.ssh/bitbucket

Host            github.com
PreferredAuthentications publickey
IdentityFile    ~/.ssh/github

Host            staging
HostName        192.168.56.10
User            deployer
PreferredAuthentications publickey
IdentityFile    ~/.ssh/id_rsa

我收到的 SSH 輸出似乎貫穿了我​​所有的密鑰：

<192.168.222.111> ESTABLISH CONNECTION FOR USER: vagrant
<192.168.222.111> REMOTE_MODULE setup
<192.168.222.111> EXEC ['ssh', '-C', '-tt', '-vvv', '-o', 'ControlMaster=auto', '-o', 'ControlPersist=60s', '-o', 'ControlPath=/Users/ashleyconnor/.ansible/cp/ansible-ssh-%h-%p-%r', '-o', 'IdentityFile=/Users/ashleyconnor/.vagrant.d/insecure_private_key', '-o', 'KbdInteractiveAuthentication=no', '-o', 'PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey', '-o', 'PasswordAuthentication=no', '-o', 'User=vagrant', '-o', 'ConnectTimeout=10', '192.168.222.111', "/bin/sh -c 'mkdir -p $HOME/.ansible/tmp/ansible-tmp-1394317116.44-226619545527061 && chmod a+rx $HOME/.ansible/tmp/ansible-tmp-1394317116.44-226619545527061 && echo $HOME/.ansible/tmp/ansible-tmp-1394317116.44-226619545527061'"]
fatal: [192.168.222.111] => SSH encountered an unknown error. The output was:
OpenSSH_6.2p2, OSSLShim 0.9.8r 8 Dec 2011
debug1: Reading configuration data /Users/ashleyconnor/.ssh/config
debug1: Reading configuration data /etc/ssh_config
debug1: /etc/ssh_config line 20: Applying options for *
debug1: /etc/ssh_config line 53: Applying options for *
debug1: auto-mux: Trying existing master
debug1: Control socket "/Users/ashleyconnor/.ansible/cp/ansible-ssh-192.168.222.111-22-vagrant" does not exist
debug2: ssh_connect: needpriv 0
debug1: Connecting to 192.168.222.111 [192.168.222.111] port 22.
debug2: fd 3 setting O_NONBLOCK
debug1: fd 3 clearing O_NONBLOCK
debug1: Connection established.
debug3: timeout: 10000 ms remain after connect
debug3: Incorrect RSA1 identifier
debug3: Could not load "/Users/ashleyconnor/.vagrant.d/insecure_private_key" as a RSA1 public key
debug1: identity file /Users/ashleyconnor/.vagrant.d/insecure_private_key type -1
debug1: identity file /Users/ashleyconnor/.vagrant.d/insecure_private_key-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_5.9p1 Debian-5ubuntu1
debug1: match: OpenSSH_5.9p1 Debian-5ubuntu1 pat OpenSSH_5*
debug2: fd 3 setting O_NONBLOCK
debug3: load_hostkeys: loading entries for host "192.168.222.111" from file "/Users/ashleyconnor/.ssh/known_hosts"
debug3: load_hostkeys: found key type RSA in file /Users/ashleyconnor/.ssh/known_hosts:20
debug3: load_hostkeys: loaded 1 keys
debug3: order_hostkeyalgs: prefer hostkeyalgs: ssh-rsa-cert-v01@openssh.com,ssh-rsa-cert-v00@openssh.com,ssh-rsa
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug2: kex_parse_kexinit: diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
debug2: kex_parse_kexinit: ssh-rsa-cert-v01@openssh.com,ssh-rsa-cert-v00@openssh.com,ssh-rsa,ssh-dss-cert-v01@openssh.com,ssh-dss-cert-v00@openssh.com,ssh-dss
debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-gcm@openssh.com,aes256-gcm@openssh.com,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-gcm@openssh.com,aes256-gcm@openssh.com,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
debug2: kex_parse_kexinit: 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: kex_parse_kexinit: 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: kex_parse_kexinit: zlib@openssh.com,zlib,none
debug2: kex_parse_kexinit: zlib@openssh.com,zlib,none
debug2: kex_parse_kexinit:
debug2: kex_parse_kexinit:
debug2: kex_parse_kexinit: first_kex_follows 0
debug2: kex_parse_kexinit: reserved 0
debug2: kex_parse_kexinit: 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: kex_parse_kexinit: ssh-rsa,ssh-dss,ecdsa-sha2-nistp256
debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-sha2-256,hmac-sha2-256-96,hmac-sha2-512,hmac-sha2-512-96,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-sha2-256,hmac-sha2-256-96,hmac-sha2-512,hmac-sha2-512-96,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: none,zlib@openssh.com
debug2: kex_parse_kexinit: none,zlib@openssh.com
debug2: kex_parse_kexinit:
debug2: kex_parse_kexinit:
debug2: kex_parse_kexinit: first_kex_follows 0
debug2: kex_parse_kexinit: reserved 0
debug2: mac_setup: found hmac-md5
debug1: kex: server->client aes128-ctr hmac-md5 zlib@openssh.com
debug2: mac_setup: found hmac-md5
debug1: kex: client->server aes128-ctr hmac-md5 zlib@openssh.com
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
debug2: dh_gen_key: priv key bits set: 119/256
debug2: bits set: 527/1024
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
debug1: Server host key: RSA 50:db:75:ba:11:2f:43:c9:ab:14:40:6d:7f:a1:ee:e3
debug3: load_hostkeys: loading entries for host "192.168.222.111" from file "/Users/ashleyconnor/.ssh/known_hosts"
debug3: load_hostkeys: found key type RSA in file /Users/ashleyconnor/.ssh/known_hosts:20
debug3: load_hostkeys: loaded 1 keys
debug1: Host '192.168.222.111' is known and matches the RSA host key.
debug1: Found key in /Users/ashleyconnor/.ssh/known_hosts:20
debug2: bits set: 511/1024
debug1: ssh_rsa_verify: signature correct
debug2: kex_derive_keys
debug2: set_newkeys: mode 1
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug2: set_newkeys: mode 0
debug1: SSH2_MSG_NEWKEYS received
debug1: Roaming not allowed by server
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug2: service_accept: ssh-userauth
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug2: key: /Users/ashleyconnor/.ssh/id_rsa (0x7fc212600540),
debug2: key: /Users/ashleyconnor/.ssh/bitbucket (0x7fc212600730),
debug2: key: /Users/ashleyconnor/.ssh/deployer (0x7fc212600a00),
debug2: key: /Users/ashleyconnor/.ssh/github (0x7fc212600c80),
debug2: key: /Users/ashleyconnor/.ssh/ash_ovh (0x7fc212601010),
debug2: key: /Users/ashleyconnor/.ssh/deployer_ovh (0x7fc2126011e0),
debug2: key: /Users/ashleyconnor/.vagrant.d/insecure_private_key (0x0), explicit
debug1: Authentications that can continue: publickey,password
debug3: start over, passed a different list publickey,password
debug3: preferred gssapi-with-mic,gssapi-keyex,hostbased,publickey
debug3: authmethod_lookup publickey
debug3: remaining preferred: ,gssapi-keyex,hostbased,publickey
debug3: authmethod_is_enabled publickey
debug1: Next authentication method: publickey
debug1: Offering RSA public key: /Users/ashleyconnor/.ssh/id_rsa
debug3: send_pubkey_test
debug2: we sent a publickey packet, wait for reply
debug1: Authentications that can continue: publickey,password
debug1: Offering RSA public key: /Users/ashleyconnor/.ssh/bitbucket
debug3: send_pubkey_test
debug2: we sent a publickey packet, wait for reply
debug1: Authentications that can continue: publickey,password
debug1: Offering RSA public key: /Users/ashleyconnor/.ssh/deployer
debug3: send_pubkey_test
debug2: we sent a publickey packet, wait for reply
debug1: Authentications that can continue: publickey,password
debug1: Offering RSA public key: /Users/ashleyconnor/.ssh/github
debug3: send_pubkey_test
debug2: we sent a publickey packet, wait for reply
debug1: Authentications that can continue: publickey,password
debug1: Offering RSA public key: /Users/ashleyconnor/.ssh/ash_ovh
debug3: send_pubkey_test
debug2: we sent a publickey packet, wait for reply
debug1: Authentications that can continue: publickey,password
debug1: Offering RSA public key: /Users/ashleyconnor/.ssh/deployer_ovh
debug3: send_pubkey_test
debug2: we sent a publickey packet, wait for reply
Received disconnect from 192.168.222.111: 2: Too many authentication failures for vagrant

該vagrant ssh命令工作正常。

根據較舊的手冊頁，除了任何身份文件之外ssh-config(5)，ssh 將始終嘗試代理已知的所有密鑰：*

IdentitiesOnly

        Specifies that ssh(1) should only use the authentication identity files
        configured in the ssh_config files, even if ssh-agent(1) offers more
        identities.  The argument to this keyword must be “yes” or “no”.  This
        option is intended for situations where ssh-agent offers many different
        identities.  The default is “no”.


IdentityFile
        Specifies a file from which the user's DSA, ECDSA or RSA authentication
        identity is read.  The default is ~/.ssh/identity for protocol version 1,
        and ~/.ssh/id_dsa, ~/.ssh/id_ecdsa and ~/.ssh/id_rsa for protocol
        version 2.  Additionally, any identities represented by the  
        authentication agent will be used for authentication.  ssh(1) will try
        to load certificate information from the filename obtained by
        appending -cert.pub to the path of a specified IdentityFile.

IdentitiesOnly=yes為了防止這種情況，除了明確提供的私鑰之外，還必須指定。

例如，執行以下ssh命令：

$ ssh -i /home/henk/.vagrant.d/insecure_private_key \
 vagrant@192.168.222.111 echo ok

產生：

Received disconnect from 192.168.222.111: 2: Too many authentication 
failures for vagrant

但是，執行相同的ssh命令，此外，指定IdentitiesOnly=yes：

$ ssh -o IdentitiesOnly=yes \
 -i /home/henk/.vagrant.d/insecure_private_key vagrant@192.168.222.111 echo ok

產生：

ok

引用自：https://serverfault.com/questions/580753

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