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Cloudron Forum

Apps | Demo | Docs | Install
  1. Cloudron Forum
  2. Collabora Online (CODE)
  3. Nextcloud can't connect to Collabora

Nextcloud can't connect to Collabora

Scheduled Pinned Locked Moved Solved Collabora Online (CODE)
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  • S staypath

    @girish Thanks for the response! Restart of Unbound had no effect. Actually, the problem seems to be independent of DNS. I also cannot complete a curl request directly to the external IP of my host machine from inside the Nextcloud container. I can, however, complete a curl request from the host itself to the host's external IP. The problem only occurs when traffic originates from inside a container.

    girishG Offline
    girishG Offline
    girish
    Staff
    wrote on last edited by
    #16

    @staypath That's indeed strange that the container cannot ping the host IP. Is there anything unique about your setup we should know or is it the equivalent of a server with a public IP? Is there some special virtualization/networking going on?

    S 1 Reply Last reply
    0
    • girishG girish

      @staypath That's indeed strange that the container cannot ping the host IP. Is there anything unique about your setup we should know or is it the equivalent of a server with a public IP? Is there some special virtualization/networking going on?

      S Offline
      S Offline
      staypath
      wrote on last edited by staypath
      #17

      @girish I ran some tcpdump sessions. When the container pings the public IPv4 of the host, the host responds to the ICMP packet, but it is responding to the private IP of the container (172.18.0.x). The packet doesn't seem to know how to get back to the container from the host.

      S girishG 2 Replies Last reply
      0
      • S staypath

        @girish I ran some tcpdump sessions. When the container pings the public IPv4 of the host, the host responds to the ICMP packet, but it is responding to the private IP of the container (172.18.0.x). The packet doesn't seem to know how to get back to the container from the host.

        S Offline
        S Offline
        staypath
        wrote on last edited by staypath
        #18

        @staypath I'd like to ask - besides Nextcloud and Collabora/OnlyOffice, what Cloudron apps depend on being able to reach other apps on the same host?

        girishG 1 Reply Last reply
        0
        • S staypath

          @staypath I'd like to ask - besides Nextcloud and Collabora/OnlyOffice, what Cloudron apps depend on being able to reach other apps on the same host?

          girishG Offline
          girishG Offline
          girish
          Staff
          wrote on last edited by
          #19

          @staypath Most apps don't. The only case I can think of on top of my head is if you had webooks when one app is calling the other. Say you setup GitLab notifications to rocket.chat but those are not configured out of the box. So, you will see the issue and they won't be failing transparently.

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          • S staypath

            @girish I ran some tcpdump sessions. When the container pings the public IPv4 of the host, the host responds to the ICMP packet, but it is responding to the private IP of the container (172.18.0.x). The packet doesn't seem to know how to get back to the container from the host.

            girishG Offline
            girishG Offline
            girish
            Staff
            wrote on last edited by
            #20

            @staypath said in Nextcloud can't connect to Collabora:

            When the container pings the public IPv4 of the host, the host responds to the ICMP packet, but it is responding to the private IP of the container (172.18.0.x). The packet doesn't seem to know how to get back to the container from the host.

            If you happen to have another server, can you test this with a normal ubuntu and docker installation ? i.e just create server, install docker. Then from a container try to ping public IP.

            FWIW, this works out of the box in all the VPS servers.

            S 1 Reply Last reply
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            • girishG girish

              @staypath said in Nextcloud can't connect to Collabora:

              When the container pings the public IPv4 of the host, the host responds to the ICMP packet, but it is responding to the private IP of the container (172.18.0.x). The packet doesn't seem to know how to get back to the container from the host.

              If you happen to have another server, can you test this with a normal ubuntu and docker installation ? i.e just create server, install docker. Then from a container try to ping public IP.

              FWIW, this works out of the box in all the VPS servers.

              S Offline
              S Offline
              staypath
              wrote on last edited by
              #21

              @girish Thank you for the recommendation. I have tried on another bare metal server running Docker and I am able to access the external host IP from the Docker container. This is clearly a network issue with the host where I have Cloudron installed.

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              • jdaviescoatesJ Offline
                jdaviescoatesJ Offline
                jdaviescoates
                wrote on last edited by
                #22

                I just tried installing Collabora and hit this exact same issue.

                This issue is marked as solved, but I'm not sure why as it doesn't appear to be actually solved.

                I use Cloudron with Gandi & Hetzner

                nebulonN 1 Reply Last reply
                0
                • jdaviescoatesJ jdaviescoates

                  I just tried installing Collabora and hit this exact same issue.

                  This issue is marked as solved, but I'm not sure why as it doesn't appear to be actually solved.

                  nebulonN Away
                  nebulonN Away
                  nebulon
                  Staff
                  wrote on last edited by
                  #23

                  @jdaviescoates actually so far reinstallation of collabora and resetting the app in nextcloud mostly solved this. It is however quite unclear still why this happens.

                  jdaviescoatesJ 1 Reply Last reply
                  1
                  • nebulonN nebulon

                    @jdaviescoates actually so far reinstallation of collabora and resetting the app in nextcloud mostly solved this. It is however quite unclear still why this happens.

                    jdaviescoatesJ Offline
                    jdaviescoatesJ Offline
                    jdaviescoates
                    wrote on last edited by
                    #24

                    @nebulon I note the setting says:

                    URL (and Port) of Collabora Online-server

                    I wonder if we need to specify a port too?

                    I use Cloudron with Gandi & Hetzner

                    jdaviescoatesJ 1 Reply Last reply
                    0
                    • jdaviescoatesJ jdaviescoates

                      @nebulon I note the setting says:

                      URL (and Port) of Collabora Online-server

                      I wonder if we need to specify a port too?

                      jdaviescoatesJ Offline
                      jdaviescoatesJ Offline
                      jdaviescoates
                      wrote on last edited by
                      #25

                      Although I think in my case perhaps it's just because I've already connected Netxtcloud to OnlyOffice! I'm not sure it's actually possible to use both alongside eachother.

                      I use Cloudron with Gandi & Hetzner

                      jdaviescoatesJ 1 Reply Last reply
                      0
                      • jdaviescoatesJ jdaviescoates

                        Although I think in my case perhaps it's just because I've already connected Netxtcloud to OnlyOffice! I'm not sure it's actually possible to use both alongside eachother.

                        jdaviescoatesJ Offline
                        jdaviescoatesJ Offline
                        jdaviescoates
                        wrote on last edited by
                        #26

                        @jdaviescoates said in Nextcloud can't connect to Collabora:

                        Although I think in my case perhaps it's just because I've already connected Netxtcloud to OnlyOffice!

                        Nope, that's not it. I just tried it with a Nextcloud that doesn't have OnlyOffice set-up and that couldn't connect either.

                        I'm not sure it's actually possible to use both alongside eachother.

                        Sounds like perhaps it is possible https://help.nextcloud.com/t/install-both-onlyoffice-and-collabora/76180/3

                        I use Cloudron with Gandi & Hetzner

                        jdaviescoatesJ 1 Reply Last reply
                        0
                        • jdaviescoatesJ jdaviescoates

                          @jdaviescoates said in Nextcloud can't connect to Collabora:

                          Although I think in my case perhaps it's just because I've already connected Netxtcloud to OnlyOffice!

                          Nope, that's not it. I just tried it with a Nextcloud that doesn't have OnlyOffice set-up and that couldn't connect either.

                          I'm not sure it's actually possible to use both alongside eachother.

                          Sounds like perhaps it is possible https://help.nextcloud.com/t/install-both-onlyoffice-and-collabora/76180/3

                          jdaviescoatesJ Offline
                          jdaviescoatesJ Offline
                          jdaviescoates
                          wrote on last edited by
                          #27

                          OK, so actually the solution was maddeningly simple

                          You mustn't put a trailing slash because then it's not a FQDN

                          You have to put

                          collabora.domain.coop
                          or
                          https://collabora.domain.coop

                          NOT

                          collabora.domain.coop/
                          nor
                          https://collabora.domain.coop/

                          Then it works fine!

                          (And it is possible to have both OnlyOffice and Collabora installs. My files still default to opening in OnlyOffice but I've now got an extra Edit with Collabora Online Development Edition option in the 3 little dots menu for files)

                          @nebulon I guess something about trailing slashes could be added to the docs? 🙂

                          I use Cloudron with Gandi & Hetzner

                          girishG 1 Reply Last reply
                          1
                          • jdaviescoatesJ jdaviescoates

                            OK, so actually the solution was maddeningly simple

                            You mustn't put a trailing slash because then it's not a FQDN

                            You have to put

                            collabora.domain.coop
                            or
                            https://collabora.domain.coop

                            NOT

                            collabora.domain.coop/
                            nor
                            https://collabora.domain.coop/

                            Then it works fine!

                            (And it is possible to have both OnlyOffice and Collabora installs. My files still default to opening in OnlyOffice but I've now got an extra Edit with Collabora Online Development Edition option in the 3 little dots menu for files)

                            @nebulon I guess something about trailing slashes could be added to the docs? 🙂

                            girishG Offline
                            girishG Offline
                            girish
                            Staff
                            wrote on last edited by
                            #28

                            @jdaviescoates Oh good catch. I much prefer fixing the app itself than docs which nobody reads 🙂 cc @nebulon

                            nebulonN 1 Reply Last reply
                            0
                            • girishG girish

                              @jdaviescoates Oh good catch. I much prefer fixing the app itself than docs which nobody reads 🙂 cc @nebulon

                              nebulonN Away
                              nebulonN Away
                              nebulon
                              Staff
                              wrote on last edited by
                              #29

                              @girish I've created an upstream issue with the plugin https://github.com/nextcloud/richdocuments/issues/1395

                              1 Reply Last reply
                              2
                              • nebulonN Away
                                nebulonN Away
                                nebulon
                                Staff
                                wrote on last edited by
                                #30

                                Looks like this is fixed upstream with next release then https://github.com/nextcloud/richdocuments/pull/1412

                                1 Reply Last reply
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