Ansible无法连接到AWS EC2实例。

Question

我想使用Ansible从Codeship构建连接到AWS EC2实例。在另一个AWS区域（eu-west-1）中，这已经完美地运行了。但现在我想在us-east-1设置服务器，然后我遇到了以下错误：

<ec2-52-11-9-45.compute-1.amazonaws.com> ESTABLISH SSH CONNECTION FOR USER: ec2-user
<ec2-52-11-9-45.compute-1.amazonaws.com> SSH: EXEC ssh -C -vvv -o ControlMaster=auto -o ControlPersist=60s -o StrictHostKeyChecking=no -o KbdInteractiveAuthentication=no -o PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey -o PasswordAuthentication=no -o User=ec2-user -o ConnectTimeout=10 -o ControlPath=/home/rof/.ansible/cp/ansible-ssh-%h-%p-%r -tt ec2-52-11-9-45.compute-1.amazonaws.com '( umask 22 && mkdir -p "$( echo $HOME/.ansible/tmp/ansible-tmp-1461915330.37-230126286487108 )" && echo "$( echo $HOME/.ansible/tmp/ansible-tmp-1461915330.37-230126286487108 )" )'
fatal: [ec2-52-11-9-45.compute-1.amazonaws.com]: UNREACHABLE! => {"changed": false, "msg": "ERROR! SSH encountered an unknown error. The output was:\nOpenSSH_6.6.1, OpenSSL 1.0.1f 6 Jan 2014

debug1: Reading configuration data /home/rof/.ssh/config
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug1: auto-mux: Trying existing master
debug1: Control socket \"/home/rof/.ansible/cp/ansible-ssh-ec2-52-11-9-45.compute-1.amazonaws.com-22-ec2-user\" does not exist
debug2: ssh_connect: needpriv 0
debug1: Connecting to ec2-52-11-9-45.compute-1.amazonaws.com [52.1.39.45] 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 \"/home/rof/.ssh/id_rsa\" as a RSA1 public key
debug1: identity file /home/rof/.ssh/id_rsa type -1
debug1: identity file /home/rof/.ssh/id_rsa-cert type -1
debug1: identity file /home/rof/.ssh/id_dsa type -1
debug1: identity file /home/rof/.ssh/id_dsa-cert type -1
debug1: identity file /home/rof/.ssh/id_ecdsa type -1
debug1: identity file /home/rof/.ssh/id_ecdsa-cert type -1
debug1: identity file /home/rof/.ssh/id_ed25519 type -1
debug1: identity file /home/rof/.ssh/id_ed25519-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_6.6.1p1 Ubuntu-2ubuntu2.6
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
debug3: load_hostkeys: loading entries for host \"ec2-52-11-9-45.compute-1.amazonaws.com\" from file \"/dev/null\"
debug3: load_hostkeys: loaded 0 keys
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug2: kex_parse_kexinit: [e-mail],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: [e-mail],[e-mail],[e-mail],[e-mail],[e-mail],[e-mail],[e-mail],[e-mail],ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-ed25519,ssh-rsa,ssh-dss
debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,[e-mail],[e-mail],[e-mail],aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,[e-mail]
debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,[e-mail],[e-mail],[e-mail],aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,[e-mail]
debug2: kex_parse_kexinit: [e-mail],[e-mail],[e-mail],[e-mail],[e-mail],[e-mail],[e-mail],[e-mail],[e-mail],hmac-md5,hmac-sha1,[e-mail],[e-mail],hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,[e-mail],hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: [e-mail],[e-mail],[e-mail],[e-mail],[e-mail],[e-mail],[e-mail],[e-mail],[e-mail],hmac-md5,hmac-sha1,[e-mail],[e-mail],hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,[e-mail],hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: [e-mail],zlib,none
debug2: kex_parse_kexinit: [e-mail],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: [e-mail],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,ecdsa-sha2-nistp256,ssh-ed25519
debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,[e-mail],[e-mail],[e-mail],aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,[e-mail]
debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,[e-mail],[e-mail],[e-mail],aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,[e-mail]
debug2: kex_parse_kexinit: [e-mail],[e-mail],[e-mail],[e-mail],[e-mail],[e-mail],[e-mail],[e-mail],[e-mail],hmac-md5,hmac-sha1,[e-mail],[e-mail],hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,[e-mail],hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: [e-mail],[e-mail],[e-mail],[e-mail],[e-mail],[e-mail],[e-mail],[e-mail],[e-mail],hmac-md5,hmac-sha1,[e-mail],[e-mail],hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,[e-mail],hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: none,[e-mail]
debug2: kex_parse_kexinit: none,[e-mail]
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: setup [e-mail]
debug1: kex: server->client aes128-ctr [e-mail] [e-mail]
debug2: mac_setup: setup [e-mail]
debug1: kex: client->server aes128-ctr [e-mail] [e-mail]
debug1: sending SSH2_MSG_KEX_ECDH_INIT
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ECDSA f6:db:c0:15:19:17:45:cc:db:6f:16:f4:6f:02:bf:79
debug3: load_hostkeys: loading entries for host \"ec2-52-11-9-45.compute-1.amazonaws.com\" from file \"/dev/null\"
debug3: load_hostkeys: loaded 0 keys
debug3: load_hostkeys: loading entries for host \"52.1.39.45\" from file \"/dev/null\"
debug3: load_hostkeys: loaded 0 keys
Warning: Permanently added 'ec2-52-11-9-45.compute-1.amazonaws.com,52.1.39.45' (ECDSA) to the list of known hosts.
debug1: ssh_ecdsa_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: SSH2_MSG_SERVICE_REQUEST sent
debug2: service_accept: ssh-userauth
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug2: key: /home/rof/.ssh/id_rsa (0x7fbfa369ea30),
debug2: key: /home/rof/.ssh/id_rsa ((nil)),
debug2: key: /home/rof/.ssh/id_dsa ((nil)),
debug2: key: /home/rof/.ssh/id_ecdsa ((nil)),
debug2: key: /home/rof/.ssh/id_ed25519 ((nil)),
debug1: Authentications that can continue: publickey
debug3: start over, passed a different list publickey
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: /home/rof/.ssh/id_rsa
debug3: send_pubkey_test
debug2: we sent a publickey packet, wait for reply
debug1: Server accepts key: pkalg ssh-rsa blen 279
debug2: input_userauth_pk_ok: fp 6a:73:a4:d1:c5:79:9d:6b:6f:3f:7d:cd:8e:60:97:84
debug3: sign_and_send_pubkey: RSA 6a:73:a4:d1:c5:79:9d:6b:6f:3f:7d:cd:8e:60:97:84
debug1: Enabling compression at level 6.
debug1: Authentication succeeded (publickey).
Authenticated to ec2-52-11-9-45.compute-1.amazonaws.com ([52.1.39.45]:22).
debug1: setting up multiplex master socket
debug3: muxserver_listen: temporary control path /home/rof/.ansible/cp/ansible-ssh-ec2-52-11-9-45.compute-1.amazonaws.com-22-ec2-user.WpJOoaH4MuX8djA0
debug2: fd 4 setting O_NONBLOCK
debug3: fd 4 is O_NONBLOCK
debug3: fd 4 is O_NONBLOCK
debug1: channel 0: new [/home/rof/.ansible/cp/ansible-ssh-ec2-52-11-9-45.compute-1.amazonaws.com-22-ec2-user]
debug3: muxserver_listen: mux listener channel 0 fd 4
debug2: fd 3 setting TCP_NODELAY
debug3: packet_set_tos: set IP_TOS 0x08
debug1: control_persist_detach: backgrounding master process
debug2: control_persist_detach: background process is 8248
Control socket connect(/home/rof/.ansible/cp/ansible-ssh-ec2-52-11-9-45.compute-1.amazonaws.com-22-ec2-user): Connection refused
Failed to connect to new control master
", "unreachable": true}

我可以通过这样一个简单的ssh命令连接：ssh [e-mail]，所以我非常确定ssh密钥已经正确设置。唯一的区别是区域和AMI，但两种情况下的AMI都是Amazon Linux。

请问有人能告诉我问题出在哪里或指点我正确的方向吗？

- Mikhail Janowski

---

认证似乎是正确的（您会收到“已验证到ec2-52-11-9-45.compute-1.amazonaws.com”）。您能否在EC2实例本身上运行该命令以进行调试？您是否在eu-west-1上执行了预配置步骤，但在us-east-1上忘记了？ - Tom

是的，我可以在EC2实例上执行此命令 (umask 22 && mkdir -p "$(echo $HOME/.ansible/tmp/ansible-tmp-1461915330.37-230126286487108)" && echo "$(echo $HOME/.ansible/tmp/ansible-tmp-1461915330.37-230126286487108)")，并且我确定在此之前没有执行任何其他步骤。 - Mikhail Janowski

当我运行整个 ssh 命令 ssh -C -vvv -o ControlMaster=auto -o ControlPersist=60s -o StrictHostKeyChecking=no -o KbdInteractiveAuthentication=no -o PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey -o PasswordAuthentication=no -o User=ec2-user -o ConnectTimeout=10 -o ControlPath=/home/rof/.ansible/cp/ansible-ssh-%h-%p-%r -tt ec2-52-1-39-45.compute-1.amazonaws.com '( umask 22 && mkdir -p "$( echo $HOME/.ansible/tmp/ansible-tmp-1461915330.37-230126286487108 )" && echo "$( echo $HOME/.ansible/tmp/ansible-tmp-1461915330.37-230126286487108 )" )' 我会得到另一个错误。 - Mikhail Janowski

debug1: Authentication succeeded (publickey). Authenticated to ec2-52-1-39-45.compute-1.amazonaws.com ([52.1.39.45]:22). debug1: setting up multiplex master socket debug3: muxserver_listen: temporary control path /home/rof/.ansible/cp/ansible-ssh-ec2-52-1-39-45.compute-1.amazonaws.com-22-ec2-user.gSeT6lu2qkM9OpjJ muxserver_listen bind(): No such file or directory - Mikhail Janowski

不好意思，我改变了IP地址。 - Mikhail Janowski

Answer 1

连接新的控制主机失败

这意味着您在使用控制连接时遇到了问题（无法连接到控制套接字文件）。请检查权限或删除套接字文件，然后重试。

通常这些设置在您的~/.ssh/config中，因此要么禁用它（ControlMaster no），要么更改路径（例如ControlPath /tmp），或者参考post。

由于您正在使用Ansible，因此可以在您的ansible.cfg中禁用控制连接（例如/etc/ansible/ansible.cfg）：

ssh_args = -o ControlMaster=no

根据此post，或者尝试禁用accelerate（根据此post）：

accelerate: false

并重试。

- kenorb