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  3. how to change DNS settings of my server ?

how to change DNS settings of my server ?

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  • C Offline
    C Offline
    cylon
    wrote on last edited by cylon
    #9

    no I'm using time4vps.

    I tried edit the file /etc/systemd/resolve.conf with this:

    [Resolve] 
    DNS=9.9.9.9 9.9.9.10
    

    but it doesn't seem to work.

    Is there something else I should do? I don't really understand the unbound DNS configuration in this doc: https://docs.cloudron.io/networking/#dns

    murgeroM 1 Reply Last reply
    0
    • C cylon

      no I'm using time4vps.

      I tried edit the file /etc/systemd/resolve.conf with this:

      [Resolve] 
      DNS=9.9.9.9 9.9.9.10
      

      but it doesn't seem to work.

      Is there something else I should do? I don't really understand the unbound DNS configuration in this doc: https://docs.cloudron.io/networking/#dns

      murgeroM Offline
      murgeroM Offline
      murgero
      App Dev
      wrote on last edited by
      #10

      @cylon You might need to restart the systemd service that handles your DNS if it's not the one documented by cloudron

      --
      https://urgero.org
      ~ Professional Nerd. Freelance Programmer. ~

      1 Reply Last reply
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      • C Offline
        C Offline
        cylon
        wrote on last edited by cylon
        #11

        I did restart systemd-resolved service but doesn't seem to work.
        After doing so the content of /etc/resolv.conf is :

        # Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)      
        #     DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN             
        # 127.0.0.53 is the systemd-resolved stub resolver.                                 
                                                                                            
        nameserver 212.24.109.143                                                           
        nameserver 80.208.225.143 
        

        Shouldn't it be 9.9.9.9 as specified in the /etc/systemd/resolve.conf file ?

        #  This file is part of systemd.                                                    
        #                                                                                   
        #  systemd is free software; you can redistribute it and/or modify it under the     
        #  terms of the GNU Lesser General Public License as published by the Free          
        #  Software Foundation; either version 2.1 of the License, or (at your option)      
        #  any later version.                                                               
        #                                                                                   
        # Entries in this file show the compile time defaults. Local configuration          
        # should be created by either modifying this file, or by creating "drop-ins" in     
        # the resolved.conf.d/ subdirectory. The latter is generally recommended.           
        # Defaults can be restored by simply deleting this file and all drop-ins.           
        #                                                                                   
        # Use 'systemd-analyze cat-config systemd/resolved.conf' to display the full config.
        #                                                                                   
        # See resolved.conf(5) for details.                                                 
                                                                                            
        [Resolve]                                                                                                                           
        DNS=9.9.9.9 9.9.9.10                                                                
        

        Cloudron doc says All apps and services use systemd-resolved for name resolution. You can configure systemctl-resolved as required by your network
        So the above should have work isn't it ?

        1 Reply Last reply
        0
        • J Offline
          J Offline
          joseph
          Staff
          wrote on last edited by
          #12

          @cylon systemd-resolved run on 127.0.0.53 . So, you have to also change /etc/resolv.conf to be nameserver 127.0.0.53 .

          1 Reply Last reply
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          • C Offline
            C Offline
            cylon
            wrote on last edited by
            #13

            How do I do that ? If I change the file /etc/resolv.conf to add the line

            nameserver 127.0.0.53
            

            It get overwritten at reboot and the line is deleted

            1 Reply Last reply
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            • C Offline
              C Offline
              cylon
              wrote on last edited by cylon
              #14

              I tried to changed the /etc/unbound/unbound.conf.d/cloudron-network.conf adding this:

              # Forward all DNS queries to Quad9 DNS                                              
              forward-zone:                                                                       
                      name: "."                                                                   
                      forward-addr: 9.9.9.9                                                       
                      forward-addr: 149.112.112.112 
              

              but request are still going to 212.24.109.143 and not 9.9.9.9

              what service is managing the /etc/resolve.conf file ?

              here are all my files:
              /etc/systemd/resolved.conf:

              #  This file is part of systemd.                                                    
              #                                                                                   
              #  systemd is free software; you can redistribute it and/or modify it under the     
              #  terms of the GNU Lesser General Public License as published by the Free          
              #  Software Foundation; either version 2.1 of the License, or (at your option)      
              #  any later version.                                                               
              #                                                                                   
              # Entries in this file show the compile time defaults. Local configuration          
              # should be created by either modifying this file, or by creating "drop-ins" in     
              # the resolved.conf.d/ subdirectory. The latter is generally recommended.           
              # Defaults can be restored by simply deleting this file and all drop-ins.           
              #                                                                                   
              # Use 'systemd-analyze cat-config systemd/resolved.conf' to display the full config.
              #                                                                                   
              # See resolved.conf(5) for details.                                                 
                                                                                                  
              [Resolve]                                                                                       
              DNS=9.9.9.9 9.9.9.10
              

              /etc/resolv.conf:

              # Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)      
              #     DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN             
              # 127.0.0.53 is the systemd-resolved stub resolver.                                 
                                                                                                  
              nameserver 212.24.109.143                                                           
              nameserver 80.208.225.143
              

              /run/systemd/resolve/resolv.conf:

              # This is /run/systemd/resolve/resolv.conf managed by man:systemd-resolved(8).      
              # Do not edit.                                                                      
              #                                                                                   
              # This file might be symlinked as /etc/resolv.conf. If you're looking at            
              # /etc/resolv.conf and seeing this text, you have followed the symlink.             
              #                                                                                   
              # This is a dynamic resolv.conf file for connecting local clients directly to       
              # all known uplink DNS servers. This file lists all configured search domains.      
              #                                                                                   
              # Third party programs should typically not access this file directly, but only     
              # through the symlink at /etc/resolv.conf. To manage man:resolv.conf(5) in a        
              # different way, replace this symlink by a static file or a different symlink.      
              #                                                                                   
              # See man:systemd-resolved.service(8) for details about the supported modes of      
              # operation for /etc/resolv.conf.                                                   
                                                                                                  
              nameserver 9.9.9.9                                                                  
              nameserver 9.9.9.10                                                                 
              search . 
              

              Running resolvectl status yield:

              Global                                                                              
                     Protocols: -LLMNR -mDNS -DNSOverTLS DNSSEC=no/unsupported                    
              resolv.conf mode: foreign                                                           
                   DNS Servers: 9.9.9.9 9.9.9.10                                                  
                                                                                                  
              Link 2 (ens3)                                                                       
              Current Scopes: none                                                                
                   Protocols: -DefaultRoute +LLMNR -mDNS -DNSOverTLS DNSSEC=no/unsupported        
                                                                                                  
              Link 3 (docker0)                                                                    
              Current Scopes: none                                                                
                   Protocols: -DefaultRoute +LLMNR -mDNS -DNSOverTLS DNSSEC=no/unsupported        
                                                                                                  
              Link 4 (br-e8030366a286)                                                            
              Current Scopes: none                                                                
                   Protocols: -DefaultRoute +LLMNR -mDNS -DNSOverTLS DNSSEC=no/unsupported        
                                                                                                  
              Link 6 (veth13a1cdd)                                                                
              Current Scopes: none                                                                
                   Protocols: -DefaultRoute +LLMNR -mDNS -DNSOverTLS DNSSEC=no/unsupported        
                                                                                                  
              Link 8 (vethf77db43)                                                                
              Current Scopes: none                                                                
                   Protocols: -DefaultRoute +LLMNR -mDNS -DNSOverT
              

              showing that resolv.conf is in mode: foreign

              what service manage resolv.conf in cloudron ?

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              • girishG girish marked this topic as a question on
              • girishG Offline
                girishG Offline
                girish
                Staff
                wrote on last edited by
                #15

                @cylon there's much to unwrap. Unfortunately, the way all these things interact is quite complicated.

                Before I say anything, are you on Cloudron 8? I am wonder why you have your /etc/resolv.conf handled by resolvconf ? Cloudron 8 has removed this package. If you are still on some < v8, I recommend upgrading first because the instructions to change the DNS are different.

                For Cloudron 8, here is a checklist:

                • Make sure resolvconf package is not there . We don't install this anymore intentionally. apt remove resolvconf
                • /etc/resolv.conf must be a symlink to ../run/systemd/resolve/stub-resolv.conf
                • systemctl status systemd-resolved must be enabled
                • Finally, /etc/systemd/resolved.conf has your preferred DNS servers (quad9 in your case).

                That should be it. After that, host www.cloudron.io should work out of the box.

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                0
                • scookeS Offline
                  scookeS Offline
                  scooke
                  wrote on last edited by
                  #16

                  I used to use Time4VPS and thoroughly enjoyed it. Did you check these out?:
                  https://www.time4vps.com/knowledgebase/working-with-dns-manager/
                  https://www.time4vps.com/knowledgebase/create-nameserver-with-your-domain/

                  A life lived in fear is a life half-lived

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                  • C Offline
                    C Offline
                    cylon
                    wrote on last edited by
                    #17

                    I'm still indeed on v7, but I can't update to v8 😞
                    https://forum.cloudron.io/post/93010

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                    • girishG Offline
                      girishG Offline
                      girish
                      Staff
                      wrote on last edited by
                      #18

                      @cylon for v7, cloudron uses unbound. For Cloudron 7, please check this:

                      • /etc/resolv.conf should have nameserver 127.0.0.1
                      • systemctl status unbound should say running
                      • host www.cloudron.io 127.0.0.1 should work

                      systemd-resolved is not used at all. So, you can ignore all those related threads and configs. I would like to understand how it got to this state though? Do you think it tried to upgrade to v8 and end it up in this state?

                      C 1 Reply Last reply
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                      • C Offline
                        C Offline
                        cylon
                        wrote on last edited by
                        #19

                        thanks for the help, but this is not urgent, I can wait for the update to the v8 so I won't have to do this change twice 🙂

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                        • girishG girish

                          @cylon for v7, cloudron uses unbound. For Cloudron 7, please check this:

                          • /etc/resolv.conf should have nameserver 127.0.0.1
                          • systemctl status unbound should say running
                          • host www.cloudron.io 127.0.0.1 should work

                          systemd-resolved is not used at all. So, you can ignore all those related threads and configs. I would like to understand how it got to this state though? Do you think it tried to upgrade to v8 and end it up in this state?

                          C Offline
                          C Offline
                          cylon
                          wrote on last edited by
                          #20

                          @girish said in how to change DNS settings of my server ?:

                          systemd-resolved is not used at all. So, you can ignore all those related threads and configs. I would like to understand how it got to this state though? Do you think it tried to upgrade to v8 and end it up in this state?

                          That's possible, I don't remember if I first tried to upgrade to v8 or to change the DNS

                          I updated the /etc/systemd/resolve.conf and only after did I check the /etc/resolv/conf file, I don't know what state it was before I updated /etc/systemd/resolve.conf

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                          • girishG Offline
                            girishG Offline
                            girish
                            Staff
                            wrote on last edited by
                            #21

                            Fixed in support as outlined in https://forum.cloudron.io/topic/12300/how-to-change-dns-settings-of-my-server/18

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