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mirrors.edge.kernel.org carries /ubuntu/ (amd64 archive) but does NOT carry /ubuntu-ports/. With the previous default both archive and ports pointed at kernel.org, so multi-arch builds (linux/amd64,linux/arm64) on bigger-runner / arc-runner-set 404'd on the arm64 leg: Err:5 http://mirrors.edge.kernel.org/ubuntu-ports noble Release 404 Not Found [IP: 213.196.21.55 80] The original outage was on archive.ubuntu.com, not ports.ubuntu.com, so default the self-hosted-ports-mirror to '' (= keep ports.ubuntu.com upstream). apt-mirror.sh and the runner-side rewrite both already no-op when the env var is empty. Self-hosted amd64 still uses kernel.org for the main archive, which worked fine in this run before the arm64 leg failed. Assisted-by: Claude:claude-opus-4-7[1m] [Claude Code] Signed-off-by: Ettore Di Giacinto <mudler@localai.io>
101 lines
4.4 KiB
YAML
101 lines
4.4 KiB
YAML
name: 'Configure apt mirror'
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description: |
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Reconfigure the GitHub Actions runner's Ubuntu apt sources to use an
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alternate mirror, and emit the effective URLs as outputs so callers can
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forward them as Docker build-args.
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Two mirror profiles depending on where the runner lives, because the
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best mirror differs by network:
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* github-hosted runners run on Azure, so they default to the
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Azure-hosted Ubuntu mirror (lowest latency, same VPC).
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* self-hosted runners (arc-runner-set, bigger-runner, ...) typically
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cannot route to azure.archive.ubuntu.com, so they default to the
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kernel.org mirror, which is publicly reachable from anywhere.
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Pass an empty string to either input to skip the rewrite for that
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profile and keep upstream archive.ubuntu.com / ports.ubuntu.com.
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inputs:
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github-hosted-mirror:
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description: 'archive/security mirror URL for github-hosted runners (empty = upstream)'
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required: false
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default: 'http://azure.archive.ubuntu.com'
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github-hosted-ports-mirror:
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description: 'ports.ubuntu.com mirror URL for github-hosted runners (empty = upstream)'
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required: false
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default: 'http://azure.ports.ubuntu.com'
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self-hosted-mirror:
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description: 'archive/security mirror URL for self-hosted runners (empty = upstream)'
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required: false
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# HTTP, not HTTPS: the bare ubuntu:24.04 builder image doesn't ship
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# ca-certificates, so the very first apt-get update over TLS would
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# fail with "No system certificates available" before it can install
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# anything. apt validates package integrity via GPG signatures, so
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# plain HTTP is safe for the archive itself.
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default: 'http://mirrors.edge.kernel.org'
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self-hosted-ports-mirror:
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description: 'ports.ubuntu.com mirror URL for self-hosted runners (empty = upstream)'
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required: false
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# mirrors.edge.kernel.org does NOT carry /ubuntu-ports/ — only the
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# main /ubuntu/ archive — so arm64 builds 404 there. Leave ports
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# upstream by default. The original DDoS was on archive.ubuntu.com
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# so ports.ubuntu.com remains the path of least surprise.
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default: ''
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outputs:
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effective-mirror:
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description: 'The mirror URL actually applied for this runner (or empty)'
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value: ${{ steps.pick.outputs.mirror }}
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effective-ports-mirror:
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description: 'The ports mirror URL actually applied for this runner (or empty)'
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value: ${{ steps.pick.outputs.ports-mirror }}
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runs:
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using: 'composite'
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steps:
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- name: Pick effective mirror for this runner
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id: pick
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shell: bash
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env:
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RUNNER_ENV: ${{ runner.environment }}
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GH_MIRROR: ${{ inputs.github-hosted-mirror }}
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GH_PORTS_MIRROR: ${{ inputs.github-hosted-ports-mirror }}
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SH_MIRROR: ${{ inputs.self-hosted-mirror }}
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SH_PORTS_MIRROR: ${{ inputs.self-hosted-ports-mirror }}
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run: |
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if [ "${RUNNER_ENV}" = "github-hosted" ]; then
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MIRROR="${GH_MIRROR}"
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PORTS_MIRROR="${GH_PORTS_MIRROR}"
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else
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MIRROR="${SH_MIRROR}"
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PORTS_MIRROR="${SH_PORTS_MIRROR}"
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fi
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echo "configure-apt-mirror: runner=${RUNNER_ENV} mirror='${MIRROR}' ports-mirror='${PORTS_MIRROR}'"
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echo "mirror=${MIRROR}" >> "$GITHUB_OUTPUT"
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echo "ports-mirror=${PORTS_MIRROR}" >> "$GITHUB_OUTPUT"
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- name: Rewrite apt sources
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if: steps.pick.outputs.mirror != '' || steps.pick.outputs.ports-mirror != ''
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shell: bash
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env:
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APT_MIRROR: ${{ steps.pick.outputs.mirror }}
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APT_PORTS_MIRROR: ${{ steps.pick.outputs.ports-mirror }}
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run: |
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set -e
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# Ubuntu 24.04 (noble) ships DEB822 sources at
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# /etc/apt/sources.list.d/ubuntu.sources; older releases use
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# /etc/apt/sources.list. Rewrite whichever exists.
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for f in /etc/apt/sources.list.d/ubuntu.sources /etc/apt/sources.list; do
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sudo test -f "$f" || continue
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if [ -n "${APT_MIRROR}" ]; then
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# Comma delimiter so the alternation pipe in the regex is not
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# interpreted as the s/// separator.
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sudo sed -i -E "s,https?://(archive\.ubuntu\.com|security\.ubuntu\.com),${APT_MIRROR},g" "$f"
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fi
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if [ -n "${APT_PORTS_MIRROR}" ]; then
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sudo sed -i -E "s,https?://ports\.ubuntu\.com,${APT_PORTS_MIRROR},g" "$f"
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fi
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done
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echo "Runner apt mirror configured (APT_MIRROR='${APT_MIRROR}', APT_PORTS_MIRROR='${APT_PORTS_MIRROR}')"
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