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deploy: prefer IPv4 in glibc DNS resolution #6626

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jyotshnayaparla-00 merged 1 commit into from
Jul 14, 2026
+6 −0
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deploy: prefer IPv4 in glibc DNS resolution #6626

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6 changes: 6 additions & 0 deletions deploy/Dockerfile
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Original file line number Diff line number Diff line change
Expand Up @@ -35,6 +35,12 @@ RUN curl -sS https://truststore.pki.rds.amazonaws.com/global/global-bundle.pem \
-o /usr/local/share/ca-certificates/aws-global-rds-bundle.crt
RUN update-ca-certificates

# Prefer IPv4 over IPv6 for dual-stack DNS results. Our EKS nodes have no IPv6
# routing, so glibc's default preference for AAAA records makes any resolver
# (Node.js actions like setup-uv, curl, etc.) hang until the IPv6 attempt times
# out before falling back to IPv4.
RUN echo "precedence ::ffff:0:0/96 100" >> /etc/gai.conf

# Set UTF-8 locale. Needed for the Rust compiler to handle Unicode column names.
RUN sed -i -e 's/# en_US.UTF-8 UTF-8/en_US.UTF-8 UTF-8/' /etc/locale.gen && \
locale-gen
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