fix(ci): install openssl-devel on arm64 for fluentd openssl gem build#1740
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The arm64 Linux image build (ContainerInsights-MultiArch-MergedBranches) started failing when io-stream 0.13.2 (published 2026-07-12) added a runtime dependency on the openssl gem. fluentd 1.19.3 pulls io-stream transitively via async-http, so `gem install fluentd` now compiles the openssl gem's native extension, which needs the OpenSSL dev headers. The amd64 branch already installs openssl-devel; the arm64 branch did not, so the build failed with "openssl/ssl.h... no / OpenSSL library could not be found". Install openssl-devel in the arm64 branch to match. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> Copilot-Session: 78f1ddcc-0547-4854-bb56-799bc455a882
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zanejohnson-azure
approved these changes
Jul 14, 2026
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Problem
The
ContainerInsights-MultiArch-MergedBranchesLinux image build began failing on the linux/arm64 builder:The same commit (
15567a7e4) succeeded on Jul 11 (build 120799) and then failed on Jul 12 and Jul 13 (builds 120843, 120914) with no source change — so the trigger was external (rubygems.org), not this repo.Root cause
The Linux image resolves its Ruby gem tree fresh at build time (no lockfile). The dependency chain is:
fluentd 1.19.3 → async-http (~> 0.86) → io-stream → opensslio-stream 0.13.1(2026-06-13) had no runtime dependencies.io-stream 0.13.2(published 2026-07-12) addedopenssl >= 3.3as a runtime dependency.Once
io-stream 0.13.2shipped,gem install fluentd -v 1.19.3started pulling and compiling theopensslgem's native extension, which requires the OpenSSL development headers. The amd64 branch ofkubernetes/linux/setup.shalready installsopenssl-devel, but the arm64 branch installed onlyzlib-devel, so arm64 failed to findopenssl/ssl.h.Verified from the build logs:
Successfully installed fluentd-1.19.3on both arches, openssl gem never installed.Successfully installed openssl-4.0.2on amd64 (has headers), 3x native-extension failure on arm64 (no headers).Fix
Install
openssl-develin the arm64 branch ofkubernetes/linux/setup.sh, matching the amd64 branch.Notes