无法在本地GitLab实例上获得SSH连接

Question

我已经部署了一个本地GitLab实例(使用https://docs.gitlab.com/ee/install/docker.html中描述的步骤)，创建了一个用户，生成了一个密钥对，并按照https://docs.gitlab.com/ee/ssh/中的步骤上传了公钥。

私钥位于目录~/。SSH与600权限，和文件~/。Ssh/config命令如下:

Host gitlab.mycompany.com
    Hostname gitlab.mycompany.com
    User myusername
    PreferredAuthentications publickey
    IdentityFile ~/.ssh/id_rsa
    IdentitiesOnly yes
    TCPKeepAlive yes

但是，当尝试建立SSH连接时，我得到错误'Permission denied (publickey)':

$ ssh -vT [e-mail]
OpenSSH_8.2p1 Ubuntu-4ubuntu0.1, OpenSSL 1.1.1f  31 Mar 2020
debug1: Reading configuration data /home/myusername/.ssh/config
debug1: /home/myusername/.ssh/config line 1: Applying options for gitlab.mycompany.com
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: include /etc/ssh/ssh_config.d/*.conf matched no files
debug1: /etc/ssh/ssh_config line 21: Applying options for *
debug1: Connecting to gitlab.mycompany.com [12.345.678.90] port 22.
debug1: Connection established.
debug1: identity file /home/myusername/.ssh/id_rsa type 0
debug1: identity file /home/myusername/.ssh/id_rsa-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_8.2p1 Ubuntu-4ubuntu0.1
debug1: Remote protocol version 2.0, remote software version OpenSSH_8.2p1 Ubuntu-4ubuntu0.2
debug1: match: OpenSSH_8.2p1 Ubuntu-4ubuntu0.2 pat OpenSSH* compat 0x04000000
debug1: Authenticating to gitlab.mycompany.com:22 as 'git'
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: algorithm: curve25519-sha256
debug1: kex: host key algorithm: ecdsa-sha2-nistp256
debug1: kex: server->client cipher: [e-mail] MAC: <implicit> compression: none
debug1: kex: client->server cipher: [e-mail] MAC: <implicit> compression: none
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ecdsa-sha2-nistp256 SHA256:9FbhbOAyNvky0M+CtyEOT8tBBimwF8aOpDH0zr+6+2Y
debug1: Host 'gitlab.mycompany.com' is known and matches the ECDSA host key.
debug1: Found key in /home/myusername/.ssh/known_hosts:29
debug1: rekey out after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: rekey in after 134217728 blocks
debug1: Will attempt key: /home/myusername/.ssh/id_rsa RSA SHA256:uekBVw1MVUz2V4LgS//w1mAP9wBRr1oomLK5uYtfJDE explicit
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs=<ssh-ed25519,[e-mail],ssh-rsa,rsa-sha2-256,rsa-sha2-512,ssh-dss,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,[e-mail]>
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey
debug1: Next authentication method: publickey
debug1: Offering public key: /home/myusername/.ssh/id_rsa RSA SHA256:uekBVw1MVUz2V4LgS//w1mAP9wBRr1oomLK5uYtfJDE explicit
debug1: Authentications that can continue: publickey
debug1: No more authentication methods to try.
[e-mail]: Permission denied (publickey).

我认为问题是在服务器端，因为我能够使用相同的密钥对建立到gitlab.com的成功连接。

对于如何解决这个问题有什么建议吗?

更多细节

我在最初的问题描述中没有提到的是，GitLab是作为容器部署的，所以我认为可能发生的事情是主机可以通过端口22访问，但它可能不会重定向到GitLab容器。

Answer 1

检查Gitlab主机上的/var/log/auth.log。它往往有更多关于身份验证错误的细节。查找sshd条目。

Answer 2

我设法解决了这个问题:)

原来，我在创建容器时错过了——publish 22:22指令。

sudo docker run --detach 
  --hostname gitlab.mycompany.com 
  --publish 443:443 --publish 80:80 --publish 22:22 
  --name gitlab 
  --restart always 
  --volume $GITLAB_HOME/config:/etc/gitlab:Z 
  --volume $GITLAB_HOME/logs:/var/log/gitlab:Z 
  --volume $GITLAB_HOME/data:/var/opt/gitlab:Z 
  gitlab/gitlab-ee:latest

分辨率为:

1. 停止容器

$ sudo docker stop gitlab

2. 关闭docker

$ sudo systemctl stop docker

3. 编辑文件/var/lib/docker/containers/[容器id]/hostconfig. conf。从
更改PortBindings

"PortBindings":{"443/tcp":[{"HostIp":"","HostPort":"443"}],"80/tcp":[{"HostIp":"","HostPort":"80"}]}

"PortBindings":{"443/tcp":[{"HostIp":"","HostPort":"443"}],"80/tcp":[{"HostIp":"","HostPort":"80"}],"2222/tcp":[{"HostIp":"","HostPort":"22"}]}

(我选择使用端口2222代替)

4. 启动docker

$ sudo systemctl start docker

5. 启动容器

$ sudo docker start gitlab

以上内容允许我成功连接:

$ ssh -T [e-mail] -p 2222
Enter passphrase for key '/home/<username>/.ssh/id_rsa':
Welcome to GitLab, @<username>!