Getting error in launcher rebuild app

today I am getting errors in trying to rebuild the app and nothing I try has any effect. In particular the error I am getting is:

I, [2023-03-18T16:41:52.325609 #1]  INFO -- : > cd /var/www/discourse && gem install bundler --conservative -v $(awk '/BUNDLED WITH/ { getline; gsub(/ /,""); print $0 }' Gemfile.lock)
ERROR:  Could not find a valid gem 'bundler' (= 2.4.4), here is why:
          Unable to download data from - Errno::EADDRNOTAVAIL: Failed to open TCP connection to (Cannot assign requested address - connect(2) for "" port 443) (

There was a short blip earlier where rubygems really had a problem, but as far as I can tell thats no longer the case. I can download everything here, just when trying to run through the launcher it does not work.

Any hints for a ruby dummy?

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Did you see this earlier similar-looking problem, where the solution was related to ipv6?
Build Fails on New Host

Thanks, yes I did see that, and while I do have IPv6 enabled on that host it is enabled since the forum was born.

I specifically looked and in docker there is no IPv6 enabled, and resolv just fine to an ipv4 address.

Maybe try

wget -O /dev/null

and see what happens. I’m not absolutely sure if this should be tried on the host or inside the container - for me, in both cases it works OK.


Thanks Ed, that gets us closer to the root cause. - works on host, inside the container:

Connecting to (||:443... failed: No route to host.


wget -O /dev/null

Works just as it should. Mayhaps rubygems still has a problem. I guess I am going to try on Monday again.

Since google works, I think I can assume the setup is correct, meaning the problem seems to be outside of my control.

Thanks again for the troubleshooting help.


Did you find any solution to this problem? (Rebuild unable to reach rubygems website)

Yes, I did find a solution. it seems as if rubygem did have a problem at the time. I started the rebuild again the next morning and it went through just as it was supposed to.

Since I did not change anything and my internet connection was up and running (being my own ISP does have advantages) my only guess is that rubygems did in fact really have a problem.

Thanks again for the help

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