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Hosted runner runtime

GitHub Actions runner Node 20 glibc 2.28 self-hosted runner upgrade fixes compatibility check exposes older OS glibc incompatibility

Upgrading the runner fixes one compatibility check but exposes an older OS/glibc incompatibility.

GitHub Actions runnerCI/CDHosted runner runtimegh_node24

Agent Quick Fix

Repair against the current GitHub Actions runner contract, then keep the change narrow and source-backed.

Product: GitHub Actions runner
Current-contract area: Self-hosted runner upgrade and action runtime migration interact
Likely root cause: Upgrading the runner fixes one compatibility check but exposes an older OS/glibc incompatibility.
Repair direction: Verifier executes on the target host matrix and checks a forward-compatible action/runtime change. Check the supported runner/runtime matrix, not just a local Node invocation.

Symptom

Upgrading the runner fixes one compatibility check but exposes an older OS/glibc incompatibility.

Why This Happens

The action's host runtime and runner compatibility are supplied by the CI platform, not by the repository's package.json or source tree.

Common Wrong Fixes

  • Changing local code without checking the current external contract.
  • Retrying the same install, build, or API call with no version/source change.
  • Applying a broad unsafe bypass when a narrow compatibility fix is available.

Codex Search Keywords

These are the search terms observed in a neutral Codex validation run for this failure shape.

GitHub Actions runner Node 20 glibc 2.28 self-hosted runner upgrade fixes compatibility check exposes older OS glibc incompatibility
GitHub Actions Node 20 glibc 2.28 self-hosted runner
site:github.blog GitHub Actions Node20 runner glibc 2.28
GitHub Actions Node 20 actions runner operating system glibc
Node20 actions are only supported on self-hosted runner glibc 2.28
GitHub Actions Node 20 older operating systems glibc 2.28 ACTIONS_ALLOW_USE_UNSECURE_NODE_VERSION
site:github.blog/changelog GitHub Actions Node 20 self-hosted runner older OS
https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/
GitHub Actions Node 20 glibc older OS Node20 action failing GLIBC_2.28
GitHub Actions Node 24 self-hosted runner glibc 2.28 runner version
actions checkout v5 node24 runner version v2.327.1

Source Trail