App build errors

mhinckley

I am having the same issue building/running apps using oakctl app run. It will start to build but can't resolve deb.debian.org. It keeps coming up with the Ign's then "temporarily failure resolving 'deb.debian.org'". When I initially did the setup for ssh I didn't select the option to install the default app so I tried pulling the Git repo to my computer, changing directories to a specific app directory, then ran "oakctl app run ." and it gave me those errors. I SSH'd into the camera and was able to ping deb.debian.org and verified that /etc/resolv.conf contained namespace servers but there were no apps or containers showing on the camera. I did a docker pull to grab the latest Luxonis base image, started a container running it, then docker exec'd into the container and the /etc/resolv.conf file was the same as in the camera OS. I tried running apt update and apt-get install -y dnsutils and the camera crashed and shut down each time so that I had to power cycle it to get it back up. I did a factory reset and ran the setup page again, this time having it install the default app and I can now see an app with oakctl app list but I don't see it listed under docker when I ssh into the camera and run "docker ps -a". Running "apt update" or "apt-get install -y dnsutils" within the app container through "oakctl app exec" doesn't crash the camera but it still has the same issue reaching deb.debian.org. There isn't an /etc/resolv.conf file in the app container. I see where the issue in this thread was mentioned as a DNS issue but I didn't see a specific method for resolving that. Any help in being able to build/install apps would be appreciated. I am using an Oak4-s R9 camera with agent version 0.14.0, OS version 1.18.3 (debug), and I am connecting via a Windows 11 machine.

jakaskerl

mhinckley

mhinckley I did a docker pull to grab the latest Luxonis base image, started a container running it, then docker exec'd into the container and the /etc/resolv.conf file was the same as in the camera OS. I tried running apt update and apt-get install -y dnsutils and the camera crashed and shut down each time so that I had to power cycle it to get it back up. I did a factory reset and ran the setup page again, this time having it install the default app and I can now see an app with oakctl app list but I don't see it listed under docker when I ssh into the camera and run "docker ps -a".

Docker has to be built with network=host option, otherwise it will crash the device. Though you really shouldn't be doing that.

Let's first test if the /etc/resolv.conf is the problem. Could you please add this to the oakapp.toml to manually add the file there (copy contents from the device side). OR attaching to the container and adding it manually. Then try pinging debian to see if it works.

Thanks,
Jaka

mhinckley

jakaskerl

This is the issue I am really trying to solve. How would I specify the path on the camera to pull the resolv.conf file from in the toml file? When this happens there isn't any new app container or docker container on the camera to be able to do some of the troubleshooting steps that were previously mentioned. The docker commands were just me trying to duplicate some of those.

AlessandroB

mhinckley ,

You need to use the command COPY to send a suitable resolv.conf file to the device as first command in the toml file.

mhinckley

AlessandroB Does that have to be from my PC or is it able to pull the resolv.conf from the camera OS? There is one in the camera OS I just wasn't sure if I need to create one on my PC or if I was able to reference a source path on the camera OS for it to pull in to the app container.

AlessandroB

mhinckley

I did it from my PC, I didn't try from the camera OS.

mhinckley

I copied the namespace information from the resolv.conf on the camera to a file on my PC and it was able to build and create an app on the camera. The app ID was all zeros though. It also ran into an issue trying to start the new app at the end of the build process. It looked like the default app that was installed during setup was running so I don't know if that is what caused the error. I stopped that app and started the one it just built and was able to start the new one. Progress at least!

mhinckley

mhinckley I also was not able to successfully run apt update from the app container. The nameserver addresses aren't what I put in the resolv.conf file that the toml file uploaded from my PC.

AlessandroB

In my opinion, you are not resolving the DNS. Try to upload a resolv.conf file with Google's DNS or someone else that you are sure that works in your network.

GolamGauseJaman

Hi,

I am having issue building standalone app. I am relatively new to the field. I am using an organization's network with DHCP enabled for the camera. I have successfully pinged services like deb.debian.org from the camera but never able to built the app using oakctl. I will try to share my .toml, device info, and actual failed messages.

I tried to copy the local dns info at /data/resolv.conf to the container's resolv.conf and checked during **prepare build container.
**
I may not be asking the right question but lot of time is going in troubleshooting, any help is greatly appreciated. 🙂

AlessandroB

Hi @GolamGauseJaman ,

I solved the issue:

Creating a resolv.conf file containing: nameserver 8.8.8.8 (you can use the DNS server you want), that I saved in the app's root folder in my PC.
Putting this instruction: { type = "COPY", source = "resolv.conf", target = "/etc/resolv.conf" }, as the first command in the prepare_container field in the toml file. I kept the prepare_build_container field empty.

I didn't succeed by copying the resolv.conf file from within the device.

I hope this can help.

Best,

Alessandro

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