ECCONREFUSED with latest version of ShareLatex about overleaf HOT 6 CLOSED

I had the same issue since the latest docker-ce update.

First I got an NGINX 502 error like in #1146.
Running sed -i 's/127.0.0.1/localhost/g' /etc/nginx/sites-enabled/sharelatex.conf like suggested brought back the web ui, but led to the issue described here.

I'm working around the issue by completely disabling IPv6 for the sharelatex container.
For the overleaf-toolkit, I did this by creating a docker-compose.override.yml in config/ with the content proposed by #1168.

---
version: '2.2'
services:
  sharelatex:
    # ...
    sysctls:
      - net.ipv6.conf.all.disable_ipv6=1

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#1168 is possibly related

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I reproduce this with an IPv6-enabled Kubernetes cluster in version 4.2.

This is a blocker for IPv6 infrastructure.

#1175 using RUN sed -i 's/127.0.0.1/localhost/g' /etc/nginx/sites-enabled/sharelatex.conf (Required to make 4.1 and 4.2 work) by @toastedcrumpets and @Wielewout did not fix the issue. When there was an NGINX 502 error in #1146, now it shows the above error message on the Web UI.

This is attributed to Overleaf 4.2 changing ports to 3000.

I am staying with 3.5.13 for now until there's a next release.

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I'm working around the issue by completely disabling IPv6 for the sharelatex container. For the overleaf-toolkit, I did this by creating a docker-compose.override.yml in config/ with the content proposed by #1168.

---
version: '2.2'
services:
  sharelatex:
    # ...
    sysctls:
      - net.ipv6.conf.all.disable_ipv6=1

This is a great solution @drescherflo, thank you for sharing. Its a good fix while we await overleaf to address IPv6 support.

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Unfortunately not possible in Kubernetes with ipv6.

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The latest releases 4.2.4 and 5.0.3 include changes for switching all internal traffic to IPv4 on the application level.

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