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    • olivierlambert
      olivierlambert Vates πŸͺ Co-Founder🦸 CEO πŸ§‘β€πŸ’Ό last edited by

      Can you be more specific?

      kiu 1 Reply Last reply Reply Quote 0
      • kiu
        kiu @olivierlambert last edited by

        @olivierlambert I still have the same problem, even adding the ssh keys before running xscontainer.

        1 Reply Last reply Reply Quote 0
        • olivierlambert
          olivierlambert Vates πŸͺ Co-Founder🦸 CEO πŸ§‘β€πŸ’Ό last edited by

          Have you followed the details given by @stormi ? You should have some detailed output then

          kiu 2 Replies Last reply Reply Quote 0
          • kiu
            kiu @olivierlambert last edited by

            @olivierlambert I have this output :

            [13:24 xcp-ng-XXXX ~]# ssh -v XXX@XXXXXXXXX
            OpenSSH_7.4p1, OpenSSL 1.0.2k-fips  26 Jan 2017
            debug1: Reading configuration data /etc/ssh/ssh_config
            debug1: /etc/ssh/ssh_config line 58: Applying options for *
            debug1: Connecting to XXXXXXXX [XXXXXXXX] 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_7.4
            debug1: Remote protocol version 2.0, remote software version OpenSSH_8.7
            debug1: match: OpenSSH_8.7 pat OpenSSH* compat 0x04000000
            debug1: Authenticating to XXXXXXXXX:22 as 'XXXXXXXX'
            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: aes128-ctr MAC: hmac-sha2-256 compression: none
            debug1: kex: client->server cipher: aes128-ctr MAC: hmac-sha2-256 compression: none
            debug1: kex: curve25519-sha256 need=32 dh_need=32
            debug1: kex: curve25519-sha256 need=32 dh_need=32
            debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
            debug1: Server host key: ecdsa-sha2-nistp256 SHA256:bmXWosoos6FqfYJXXYPv1H5lU4fRKIucvEv1QE/chN0
            debug1: Host 'XXXXXXXXXXXX' is known and matches the ECDSA host key.
            debug1: Found key in /root/.ssh/known_hosts:1
            debug1: rekey after 4294967296 blocks
            debug1: SSH2_MSG_NEWKEYS sent
            debug1: expecting SSH2_MSG_NEWKEYS
            debug1: SSH2_MSG_NEWKEYS received
            debug1: rekey after 4294967296 blocks
            debug1: SSH2_MSG_EXT_INFO received
            debug1: kex_input_ext_info: server-sig-algs=<ssh-ed25519,sk-ssh-ed25519@openssh.com,ssh-rsa,rsa-sha2-256,rsa-sha2-512,ssh-dss,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,sk-ecdsa-sha2-nistp256@openssh.com,webauthn-sk-ecdsa-sha2-nistp256@openssh.com>
            debug1: SSH2_MSG_SERVICE_ACCEPT received
            debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password
            debug1: Next authentication method: gssapi-keyex
            debug1: No valid Key exchange context
            debug1: Next authentication method: gssapi-with-mic
            debug1: Unspecified GSS failure.  Minor code may provide more information
            No Kerberos credentials available (default cache: KEYRING:persistent:0)
            
            debug1: Unspecified GSS failure.  Minor code may provide more information
            No Kerberos credentials available (default cache: KEYRING:persistent:0)
            
            debug1: Next authentication method: publickey
            debug1: Trying private key: /root/.ssh/id_rsa
            debug1: Trying private key: /root/.ssh/id_dsa
            debug1: Trying private key: /root/.ssh/id_ecdsa
            debug1: Trying private key: /root/.ssh/id_ed25519
            debug1: Next authentication method: password
            XXXXX@XXXXXXXXX's password: 
            debug1: Authentication succeeded (password).
            Authenticated to XXXXXXXXXXXX ([XXXXXXXXXX]:22).
            debug1: channel 0: new [client-session]
            debug1: Requesting no-more-sessions@openssh.com
            debug1: Entering interactive session.
            debug1: pledge: network
            debug1: client_input_global_request: rtype hostkeys-00@openssh.com want_reply 0
            debug1: Sending environment.
            debug1: Sending env LANG = fr_FR.UTF-8
            Last login: Mon Jan 23 13:23:33 2023
            [XXXXX@docker ~]$ 
            
            
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            • kiu
              kiu @olivierlambert last edited by

              @olivierlambert @stormi up πŸ™‚

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              • olivierlambert
                olivierlambert Vates πŸͺ Co-Founder🦸 CEO πŸ§‘β€πŸ’Ό last edited by

                Can you check the presence of the key inside your VM?

                kiu 1 Reply Last reply Reply Quote 0
                • kiu
                  kiu @olivierlambert last edited by olivierlambert

                  @olivierlambert yes πŸ™‚

                  Output to docker machine :

                  [XXXX@docker ~]$ cat .ssh/authorized_keys 
                  ssh-rsa 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 root@xcp-ng-XXX
                  [XXXX@docker ~]$ 
                  

                  Output to XCP machine :

                  [07:53 xcp-ng-XXXX ~]# cat .ssh/known_hosts 
                  192.XXX.XXX.XXX ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBNJxGOt3RvDXvelRUPTYyIHmykXhfRWSEN6PXSKYUVxct8qjENHqqqAEJOrl6E5cF9orOGQfbAPjSlLwNqGUGlo=
                  [07:55 xcp-ng-XXX ~]#
                  
                  BenjiReis 1 Reply Last reply Reply Quote 0
                  • stormi
                    stormi Vates πŸͺ XCP-ng Team πŸš€ last edited by

                    One or more added -v to ssh might tell why the keys are not accepted.

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                    • BenjiReis
                      BenjiReis Vates πŸͺ XCP-ng Team πŸš€ @kiu last edited by

                      @kiu I reproduced your issue.

                      The issue comes from a lib used by xscontainer as a SSH Client which use a deprecated algo ssh-rsa so all modern (>=8.7) OpenSSH reject the connexion.

                      BenjiReis 1 Reply Last reply Reply Quote 1
                      • BenjiReis
                        BenjiReis Vates πŸͺ XCP-ng Team πŸš€ @BenjiReis last edited by

                        @BenjiReis following: I tested on a Centos7 VM with an older openssh and the prepare VM script was successful.

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                        • stormi
                          stormi Vates πŸͺ XCP-ng Team πŸš€ last edited by stormi

                          So, we found the reason: xscontainer in XCP-ng currently uses a rather old version of python2-paramiko, which seems to insist on using ssh-rsa algorithms, support for which was dropped in recent openssh releases.

                          That's why it works for some distros and not for others.

                          We'll see it to update the components. Meanwhile, it's possible to fix it by installing python2-pip from EPEL and then upgrading first to "cryptography < 2.6" and then to "paramiko < 3". However, doing this as root may overwrite the files from the RPMs so it's not really clean. I'd advise it only for testing.

                          kiu 2 Replies Last reply Reply Quote 3
                          • kiu
                            kiu @stormi last edited by

                            @stormi OK, thanks. I will try your solution on a small lab.

                            1 Reply Last reply Reply Quote 0
                            • kiu
                              kiu @stormi last edited by

                              @stormi I tried to do it but I don't think I succeeded. Could you send me a more specific doc of what you are doing?

                              thanks πŸ™‚

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                              • stormi
                                stormi Vates πŸͺ XCP-ng Team πŸš€ last edited by

                                I think these are the steps that worked for me:

                                yum install xscontainer
                                yum install python2-pip --enablerepo=epel
                                pip2 install --upgrade "pip < 21"
                                pip2 install --upgrade "cryptography == 2.5"
                                pip2 install --upgrade "paramiko < 3"
                                

                                As this is done outside a virtualenv (I've tried inside a virtualenv, but I think xscontainer runs stuff outside of it, so it didn't work), this will overwrite the contents of RPMs you installed, so, again, only for testing.

                                I also had to remove the former host key from the VM metadata:

                                 xe vm-param-remove uuid=... param-name=other-config param-key=xscontainer-sshhostkey
                                
                                kiu 1 Reply Last reply Reply Quote 1
                                • kiu
                                  kiu @stormi last edited by

                                  @stormi Thanks, I just tried that and it still doesn't work 😞

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                                  • stormi
                                    stormi Vates πŸͺ XCP-ng Team πŸš€ last edited by

                                    Well, I tried it myself on a freshly installed pool, and this worked. Can you elaborate on what doesn't work?

                                    kiu 1 Reply Last reply Reply Quote 0
                                    • kiu
                                      kiu @stormi last edited by

                                      @stormi I still have the same problem, the key does not want to install and asks me if I want to try again.

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                                      • stormi
                                        stormi Vates πŸͺ XCP-ng Team πŸš€ last edited by

                                        What's the exact error message?

                                        kiu 1 Reply Last reply Reply Quote 0
                                        • kiu
                                          kiu @stormi last edited by olivierlambert

                                          @stormi

                                          Would you like to push a pool-specific public SSH key into the ~/.ssh/authorized_keys file of the specified VM and therefore authorize hosts in the pool to interact with the containers inside the VM?
                                          Answer y/n: 
                                          y
                                          Attempting to push the public xscontainer key to USER@IP.
                                          ID@IP's password: 
                                          Success.
                                          Attempting to refresh the state of the VM
                                          Failure diagnosis: Unable to find ncat inside the VM. Please install ncat. 
                                          Do you wish to retry?
                                          Answer y/n:
                                          
                                          kiu 1 Reply Last reply Reply Quote 0
                                          • kiu
                                            kiu @kiu last edited by

                                            My server is up to date

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