GitLab CI内部的SSH主机密钥验证失败

时间:2019-07-31 12:27:42

标签: ssh gitlab gitlab-ci

本地设置

我通过ssh-keygen命令创建了公共和私有SSH密钥。

我决定先在本地设置私钥,然后再在我的仓库的gitlab CI上进行设置。

我在服务器上设置了公钥(在这种情况下,是另一个gitlab存储库,但是将来可能会改变,并且不应该影响问题)。

我已通过以下命令成功与本地服务器通信(在这种情况下,我正在通过git使用SSH,但将来可能会再次更改):

git clone git@gitlab.com:...../......git

GitLab CI设置

然后我决定在gitlab CI上设置私钥和通信。

在我的仓库中,我导航至设置->持续集成->变量,并添加了以下环境变量:

  • SSH_DEPLOY_PRIVATE_KEY-我曾经使用与本地相同的私钥
  • SSH_KNOWN_HOSTS
    • 我从本地计算机的gitlab.com文件中取出了~/.ssh/known_hosts个已知主机
    • gitlab.com,35.231.145.151 ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBFSMqzJeV9rUzU4kWitGjeR4PWSa29SPqJ1fVkhtj3Hw9xjLVXVYrU9QlYWrOLXBpQ6KWjbjTDTdDkoohFzgbEY=

然后我在.gitlab-ci.yml内部设置SSH:

script:
  - apt-get install openssh-client -y
  - eval $(ssh-agent -s)
  - echo "$SSH_DEPLOY_PRIVATE_KEY" | tr -d '\r' | ssh-add - > /dev/null
  - mkdir -p /.ssh && touch /.ssh/known_hosts
  - echo "$SSH_KNOWN_HOSTS" >> /.ssh/known_hosts
  - mkdir -p ~/.ssh
  - chmod 700 ~/.ssh

这似乎工作正常,我收到以下消息:Identity added: (stdin) (runner@....)

然后我添加了相同的git clone命令来与服务器通信,但失败并出现以下错误:

Cloning into '......'...
Host key verification failed.
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.

本地测试仍然有效。我使用了与上面相同的命令在本地设置SSH(但我改用pacman -S openssh来安装)。

我该如何解决?

修改

我知道我可以直接在GitLab CI中执行ssh-keyscan,这在理论上应该可以解决问题,但是据我所知,这很容易受到中间人攻击。我正在尝试找到一种更安全的解决方案。

编辑2

直接在GitLab CI中运行ssh-keyscan后,我得到了相同的错误消息。

详细输出是相同的:

$ GIT_SSH_COMMAND="ssh -vvv" git clone git@gitlab.com:..../.....git deployed
Cloning into 'deployed'...
Host key verification failed.
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.

编辑3

似乎已连接到互联网。加apt-get install否则将无法正常工作。

编辑4

我不明白为什么这是一项艰巨的任务。我遵循了this article,并正确地进行了所有操作。似乎还有很多其他类似的问题,也没有任何答案。这是我们无法控制的GitLab CI问题吗?

我现在还认为这与SSH服务器是另一个GitLab存储库有关。也许GitLab CI会阻止同一网络内的SSH连接。不知道为什么,但是有可能。同样也不知道没有SSH怎么连接。

编辑5

使用GIT_SSH_COMMAND时,详细输出显然无法正常工作,因此我尝试了不使用git的ssh连接:

ssh -vvvv git@gitlab.com

日志输出:

OpenSSH_6.7p1 Debian-5+deb8u5, OpenSSL 1.0.1t  3 May 2016
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
Pseudo-terminal will not be allocated because stdin is not a terminal.
debug2: ssh_connect: needpriv 0
debug1: Connecting to gitlab.com [35.231.145.151] port 22.
debug1: Connection established.
debug1: permanently_set_uid: 0/0
debug1: key_load_public: No such file or directory
debug1: identity file /root/.ssh/id_rsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /root/.ssh/id_rsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /root/.ssh/id_dsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /root/.ssh/id_dsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /root/.ssh/id_ecdsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /root/.ssh/id_ecdsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /root/.ssh/id_ed25519 type -1
debug1: key_load_public: No such file or directory
debug1: identity file /root/.ssh/id_ed25519-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_6.7p1 Debian-5+deb8u5
debug1: Remote protocol version 2.0, remote software version OpenSSH_7.2p2 Ubuntu-4ubuntu2.8
debug1: match: OpenSSH_7.2p2 Ubuntu-4ubuntu2.8 pat OpenSSH* compat 0x04000000
debug2: fd 3 setting O_NONBLOCK
debug3: load_hostkeys: loading entries for host "gitlab.com" from file "/root/.ssh/known_hosts"
debug3: load_hostkeys: loaded 0 keys
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug2: kex_parse_kexinit: curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha1,diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1
debug2: kex_parse_kexinit: 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,ssh-rsa-cert-v01@openssh.com,ssh-dss-cert-v01@openssh.com,ssh-rsa-cert-v00@openssh.com,ssh-dss-cert-v00@openssh.com,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,aes128-gcm@openssh.com,aes256-gcm@openssh.com,chacha20-poly1305@openssh.com,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,aes128-gcm@openssh.com,aes256-gcm@openssh.com,chacha20-poly1305@openssh.com,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
debug2: kex_parse_kexinit: 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,hmac-md5-etm@openssh.com,hmac-ripemd160-etm@openssh.com,hmac-sha1-96-etm@openssh.com,hmac-md5-96-etm@openssh.com,hmac-md5,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: 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,hmac-md5-etm@openssh.com,hmac-ripemd160-etm@openssh.com,hmac-sha1-96-etm@openssh.com,hmac-md5-96-etm@openssh.com,hmac-md5,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: none,zlib@openssh.com,zlib
debug2: kex_parse_kexinit: none,zlib@openssh.com,zlib
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: curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha1
debug2: kex_parse_kexinit: ssh-rsa,rsa-sha2-512,rsa-sha2-256,ecdsa-sha2-nistp256,ssh-ed25519
debug2: kex_parse_kexinit: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com
debug2: kex_parse_kexinit: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com
debug2: kex_parse_kexinit: 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: kex_parse_kexinit: 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: 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: setup umac-64-etm@openssh.com
debug1: kex: server->client aes128-ctr umac-64-etm@openssh.com none
debug2: mac_setup: setup umac-64-etm@openssh.com
debug1: kex: client->server aes128-ctr umac-64-etm@openssh.com none
debug1: sending SSH2_MSG_KEX_ECDH_INIT
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ECDSA f1:d0:fb:46:73:7a:70:92:5a:ab:5d:ef:43:e2:1c:35
debug3: load_hostkeys: loading entries for host "gitlab.com" from file "/root/.ssh/known_hosts"
debug3: load_hostkeys: loaded 0 keys
debug3: load_hostkeys: loading entries for host "35.231.145.151" from file "/root/.ssh/known_hosts"
debug3: load_hostkeys: loaded 0 keys
debug1: read_passphrase: can't open /dev/tty: No such device or address
Host key verification failed.

倒数第二行表明它正在尝试使用/dev/tty文件与终端进行通信。当然,此脚本在非交互式庄园中运行,因此失败。不是应该使用我的密钥而不是从终端请求密码吗?

3 个答案:

答案 0 :(得分:4)

您可能需要尝试将模式设置为644而不是700。Verifying the SSH host keys文档中建议使用644,默认情况下SSH也用于此文件。 SSH的某些部分对此很特别-我不确定known_hosts是否特别。

文档还提到您应该将function Parent({location}) { let params = new URLSearchParams(location.search); return <Child name={params.get("filter")} />; } 变量的值设置为SSH_KNOWN_HOSTS entire 输出,因为有多个键。

编辑:

以下ssh-keyscan在GitLab.com上为我工作。注意使用.gitlab-ci.yml而不是~/.ssh/

/.ssh/

答案 1 :(得分:1)

在负载平衡服务器的情况下,服务器可以具有多个签名。理想的方式是改变

- echo "$SSH_KNOWN_HOSTS" >> /.ssh/known_hosts

- ssh-keyscan www.gitlab.com >> /.ssh/known_hosts

答案 2 :(得分:0)

我不建议使用相同的私钥。既出于安全原因,又因为它可能引起其他问题。另外,请确保authorized_keys文件包含要访问的服务器上的公钥,否则整个过程将无法正常进行。 我假设您已经按照this one的指南进行操作了?

希望这会有所作为。