Hi

Stock nginx built into Synology DSM won’t cut it, so I decided to install Nginx Proxy Manager. Before doing so, I created a macvlan and assigned the NPM container to use the assigned IP. Once install is finished, and I try to launch NPM, it fails to load. I tried the same install without macvlan, and it works and loads just fine. I have installed many other containers on macvlan, so I know what I am doing and have the knowledge and experience, but I have never run into this before where there seems to be a conflict I am not aware of.

Help? Anyone?

  • Illuminated_Humanoid@alien.topOPBEnglish
    0·
    11 months ago

    Looking at your example. Your original settings are:

    docker network create -d macvlan \
    -o parent=eth0 \
    --subnet=192.168.2.0/24 \
    --gateway=192.168.2.1 \
    --ip-range 192.168.2.200/27 \
    --aux-address=“host=192.168.2.201” \
    dockervlan

    Why did you use 192.168.2.200/29 for your route? This is the last part I dont quite understand. How does it play into the settings you chose above?

    My setup is ip range 192.168.87.96/30 which is ip range 192.168.87.96 to 192.168.87.99 . I chose 192.168.87.99 as my auxillary and my Nginx was automatically given IP 192.168.87.96 . Now my question is how do I go about knowing what to use for route? I blindly first tried 192.168.87.98 from some bad info ChatGPT gave me and then I changed the route to the exact same CIDR notation I use for my IP range which is 192.168.87.96/30 and that seemed to work. Im asking because although it works I have zero clue why it works. My brain doesnt understand this final part.

    🙏🏼

    • isleepbad@alien.topBEnglish
      0·
      11 months ago

      Why did you use 192.168.2.200/29 for your route? This is the last part I dont quite understand. How does it play into the settings you chose above?

      I made a typo here and it should be --ip-range 192.168.2.200/29

      As I mentioned above you are creating a virtual LAN and as such you need to carve out your own subnet.

      My setup is ip range 192.168.87.96/30 which is ip range 192.168.87.96 to 192.168.87.99 . I chose 192.168.87.99 as my auxillary and my Nginx was automatically given IP 192.168.87.96 . Now my question is how do I go about knowing what to use for route?

      What do you mean what to use for route? Given what you said your command should look like:

      docker network create -d macvlan \
-o parent=eth0 \
--subnet=192.168.87.0/24 \
--gateway=192.168.87.1 \ #this is your router's address
--ip-range 192.168.87.96/30 \
--aux-address="host=192.168.87.99" \
dockervlan

      So that command is saying: I have an entire LAN that lives on the subnet 192.168.87.0/24. My router (i.e. gateway) has the IP address 192.168.87.1. I have a virtual network (macvlan) that has its own subnet that has the range 192.168.87.96/30.

      So now you need to create the virtual subnet (macvlan) using the command

      sudo ip route add 192.168.87.96/30 dev macvlan0

      If you use any other subnet it wouldn’t make any sense. How else would you get the same address space you described in the ip-range option?