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Thiago Ozores
Thiago Ozores

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[Fedora 32] How to solve docker internal network issue

Recently I upgraded to Fedora 32 with a fresh install and started to face an issue using docker-compose and docker in general, containers weren't able to talk each other.

After some googling I found that default backend for firewalld was changed from iptables to nftables.

I tried to do the proposed fixes for Docker described in the link above, but without success, so the way to solve the issue for me was put back iptables as firewalld backend.

With those commands below, I was able to solve the issue.

sudo sed -i 's/FirewallBackend=nftables/FirewallBackend=iptables/g' /etc/firewalld/firewalld.conf

sudo systemctl restart firewalld docker
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That's all folks, thanks in advance and stay in tune.

Discussion (14)

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dvfranco profile image
dv-franco • Edited on

may I offer an alternative?

firewall-cmd --permanent --zone=trusted --add-interface=docker0
firewall-cmd --reload
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ozorest profile image
Thiago Ozores Author

Opa, com certeza, eu tentei essa solução de mudar a zone do docker0, sem sucesso, mas não lembro se eu cheguei a mudar para a trusted.
Muito obrigado por compartilhar.

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dvfranco profile image
dv-franco • Edited on

tranquilo... aqui pra mim funcionou instantaneamente :)

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benitocas88 profile image
Ebenezer Pool Castillo

I created my account just to say:
Thanks so much!!!

Works for me :)

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ozorest profile image
Thiago Ozores Author

I'm very glad to help and to know that you created the account just to say thanks

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vk26 profile image
Dmitry

Thank you very much! You save my work day! I spent few hours before I met your post.

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fuhrmann profile image
Ricardo Fuhrmann

Muito obrigado! Resolveu o problema!!!

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felubra profile image
Felipe Lübe de Bragança

Obrigado pela dica! Ela foi a única que funcionou em dois dias parado com essa issue.

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ozorest profile image
Thiago Ozores Author

De nada, fico feliz por ter ajudado

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Júnior Mendes

Cara, valeu demais!

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ozorest profile image
Thiago Ozores Author

De nada, fico feliz por ter ajudado

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coleplx

Valeu! :D

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Ernest Shefer

Thank you very much for this solution!!

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ozorest profile image
Thiago Ozores Author

I'm glad to help