Skip to content
  • Categories
  • Recent
  • Tags
  • Popular
  • Users
  • Groups
  • Search
  • Get Qt Extensions
  • Unsolved
Collapse
Brand Logo
  1. Home
  2. Qt Development
  3. General and Desktop
  4. Connect with database standing on host which requires SSH connection using Qt
Forum Updated to NodeBB v4.3 + New Features

Connect with database standing on host which requires SSH connection using Qt

Scheduled Pinned Locked Moved Unsolved General and Desktop
17 Posts 4 Posters 2.2k Views 1 Watching
  • Oldest to Newest
  • Newest to Oldest
  • Most Votes
Reply
  • Reply as topic
Log in to reply
This topic has been deleted. Only users with topic management privileges can see it.
  • Christian EhrlicherC Online
    Christian EhrlicherC Online
    Christian Ehrlicher
    Lifetime Qt Champion
    wrote on last edited by
    #7

    @marcus74 said in Connect with database standing on host which requires SSH connection using Qt:

    Any ideas how to solve that?

    Use another port - you can't open a ssh tunnel on a port which is already in use.

    Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
    Visit the Qt Academy at https://academy.qt.io/catalog

    1 Reply Last reply
    2
    • M Offline
      M Offline
      marcus74
      wrote on last edited by
      #8

      Still does not work.

      7fb6cd55-d396-4070-8514-e252aec6df47-obraz.png

      ssh -L 5000:localhost:22 userFromAboveHost@host.with.database.com
      

      have no effect too.

      1 Reply Last reply
      0
      • SGaistS Offline
        SGaistS Offline
        SGaist
        Lifetime Qt Champion
        wrote on last edited by
        #9

        Hi,

        @Christian-Ehrlicher suggested to change the port on your local host side to avoid the clash no the two. You can also disable temporarily your local PostgreSQL during the testing.

        Interested in AI ? www.idiap.ch
        Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

        M 1 Reply Last reply
        2
        • SGaistS SGaist

          Hi,

          @Christian-Ehrlicher suggested to change the port on your local host side to avoid the clash no the two. You can also disable temporarily your local PostgreSQL during the testing.

          M Offline
          M Offline
          marcus74
          wrote on last edited by
          #10

          @SGaist I've done it on screen and it didn't work as well

          1 Reply Last reply
          0
          • Christian EhrlicherC Online
            Christian EhrlicherC Online
            Christian Ehrlicher
            Lifetime Qt Champion
            wrote on last edited by
            #11

            @marcus74 said in Connect with database standing on host which requires SSH connection using Qt:

            I've done it on screen and it didn't work as well
            ssh -L 5000:localhost:22 userFromAboveHost@host.with.database.com

            No, you're now connecting to port 22 on your database server

            Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
            Visit the Qt Academy at https://academy.qt.io/catalog

            M 1 Reply Last reply
            0
            • hskoglundH Offline
              hskoglundH Offline
              hskoglund
              wrote on last edited by
              #12

              The procedure is pretty good (and officially) documented by PostgreSQL

              1 Reply Last reply
              3
              • Christian EhrlicherC Christian Ehrlicher

                @marcus74 said in Connect with database standing on host which requires SSH connection using Qt:

                I've done it on screen and it didn't work as well
                ssh -L 5000:localhost:22 userFromAboveHost@host.with.database.com

                No, you're now connecting to port 22 on your database server

                M Offline
                M Offline
                marcus74
                wrote on last edited by
                #13

                @Christian-Ehrlicher On screen code I tried in second line:

                ssh -L 5000:localhost:5432 userFromAboveHost@host.with.database.com
                

                and it gave above output.

                1 Reply Last reply
                0
                • hskoglundH Offline
                  hskoglundH Offline
                  hskoglund
                  wrote on last edited by hskoglund
                  #14

                  Again hmm,, in the screenshot above you're using server.using.tunnel.com (not ```host.with.database.com``)?

                  Edit: I mean you should try this SSH:

                  ssh -L 5000:host.with.database.com:5432 userFromAboveServer@server.using.tunnel.com
                  
                  M 1 Reply Last reply
                  1
                  • hskoglundH hskoglund

                    Again hmm,, in the screenshot above you're using server.using.tunnel.com (not ```host.with.database.com``)?

                    Edit: I mean you should try this SSH:

                    ssh -L 5000:host.with.database.com:5432 userFromAboveServer@server.using.tunnel.com
                    
                    M Offline
                    M Offline
                    marcus74
                    wrote on last edited by
                    #15

                    @hskoglund Again, I receive errors about not accepting TCP/IP connections. Maybe I should pass by some way a password in process object for

                    userFromAboveServer@server.using.tunnel.com
                    

                    because in Windows cmd I am requested for password after doing this:

                    ssh -L 5000:host.with.database.com:5432 userFromAboveServer@server.using.tunnel.com
                    
                    1 Reply Last reply
                    0
                    • hskoglundH Offline
                      hskoglundH Offline
                      hskoglund
                      wrote on last edited by
                      #16

                      Yeah, if you're establishing the SSH tunnel via a command line, then there's no stable way to submit the password.
                      I think putty can be used in an automatic way, or, if you have a admin rights on server.using.tunnel.com you could create keys, so that no password is needed, more for example here

                      1 Reply Last reply
                      1
                      • M Offline
                        M Offline
                        marcus74
                        wrote on last edited by marcus74
                        #17

                        Ok, after long perturbations I used program:
                        https://geekflare.com/create-port-listener-in-windows-or-linux/
                        and created listening port 5000, then ran Qt project and everything is fine.
                        Thanks for all your patience :)

                        To conclude, passing passoword as I mentioned above is not mandatory.

                        1 Reply Last reply
                        0

                        • Login

                        • Login or register to search.
                        • First post
                          Last post
                        0
                        • Categories
                        • Recent
                        • Tags
                        • Popular
                        • Users
                        • Groups
                        • Search
                        • Get Qt Extensions
                        • Unsolved