ci: switch to GitHub cache for all runners #35348

willcl-ark commented at 4:44 PM on May 21, 2026: member

Cirrus is winding down, and github now offers more than 10GB cache.

Switch to GH cache for all runner-types. Simplify configure-docker action.

DrahtBot added the label Tests on May 21, 2026

DrahtBot commented at 4:44 PM on May 21, 2026: contributor

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Code Coverage & Benchmarks

For details see: https://corecheck.dev/bitcoin/bitcoin/pulls/35348.

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ACK	maflcko

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willcl-ark commented at 7:50 PM on May 21, 2026: member

I ran this on master branch (on my own fork) where you can see a successful docker cache save here and regular cache blob saves here

in .github/actions/configure-docker/action.yml:43 in a56dee26fa outdated

  21 | @@ -37,24 +22,12 @@ runs:
  22 |        shell: bash
  23 |        run: |
  24 |          # Configure docker build cache backend
  25 | -        #
  26 | -        # On forks the gha cache will work but will use Github's cache backend.
  27 | -        # Docker will check for variables $ACTIONS_CACHE_URL, $ACTIONS_RESULTS_URL and $ACTIONS_RUNTIME_TOKEN
  28 | -        # which are set automatically when running on GitHub infra: https://docs.docker.com/build/cache/backends/gha/#synopsis

maflcko commented at 8:23 AM on May 22, 2026:

nit: I think those two lines are still relevant and can be moved to the prior section "Expose actions cache variables"?

willcl-ark commented at 8:39 AM on May 22, 2026:

Agreed, fixed in c03107acf50aeada1bacdfdbf632ffce2957bff0

maflcko commented at 8:37 AM on May 22, 2026: member

lgtm, just one nit/question (feel free to ignore).

This should hopefully fix the 500-err that are happening. E.g. https://github.com/bitcoin/bitcoin/actions/runs/26265910816/job/77308984926#step:6:45:

Redefining the ACTIONS_CACHE_URL and ACTIONS_RESULTS_URL to http://127.0.0.1:12321/ to make the cache faster...
Attempt 1 of 5 failed with error: Failed request: (500) Internal Server Error: GHA cache v2 failed to retrieve information about cache entry with key "ccache-ci_native_alpine_musl-26265910816" and version "5683fc144be6e87619d6825976b04d5025c6427ff80ba1400e061fc86e269d75": rpc error: code = Unknown desc = . Retrying request in 3000 ms...
Attempt 2 of 5 failed with error: Failed request: (500) Internal Server Error: GHA cache v2 failed to retrieve information about cache entry with key "ccache-ci_native_alpine_musl-26265910816" and version "5683fc144be6e87619d6825976b04d5025c6427ff80ba1400e061fc86e269d75": rpc error: code = Unknown desc = . Retrying request in 5029 ms...
Attempt 3 of 5 failed with error: Failed request: (500) Internal Server Error: GHA cache v2 failed to retrieve information about cache entry with key "ccache-ci_native_alpine_musl-26265910816" and version "5683fc144be6e87619d6825976b04d5025c6427ff80ba1400e061fc86e269d75": rpc error: code = Unknown desc = . Retrying request in 7560 ms...
Attempt 4 of 5 failed with error: Failed request: (500) Internal Server Error: GHA cache v2 failed to retrieve information about cache entry with key "ccache-ci_native_alpine_musl-26265910816" and version "5683fc144be6e87619d6825976b04d5025c6427ff80ba1400e061fc86e269d75": rpc error: code = Unknown desc = . Retrying request in 11554 ms...
Warning: Failed to restore: Failed to GetCacheEntryDownloadURL: Failed to make request after 5 attempts: Failed request: (500) Internal Server Error: GHA cache v2 failed to retrieve information about cache entry with key "ccache-ci_native_alpine_musl-26265910816" and version "5683fc144be6e87619d6825976b04d5025c6427ff80ba1400e061fc86e269d75": rpc error: code = Unknown desc = 
Cache not found for input keys: ccache-ci_native_alpine_musl-26265910816, ccache-ci_native_alpine_musl-

Also, I guess this doesn't need a backport, because for those it shouldn't matter if the cache fails due to a 503, or a "normal" cache miss, which is expected. Though, a backport to all active branches should be harmless, if done for consistency.

review ACK a56dee26fa9cad983ac3b5b6841c341788942fd7 🔄

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maflcko commented at 8:37 AM on May 22, 2026: member

.

ci: switch to GitHub cache for all runners

Cirrus is winding down and github now offers more than 10GB cache.

Switch to GH cache for all runner-types. Simplify docker build arg
construction, and reduce the number of needed action permissions.

c03107acf5

willcl-ark force-pushed on May 22, 2026

maflcko commented at 8:41 AM on May 22, 2026: member

review ACK c03107acf50aeada1bacdfdbf632ffce2957bff0 🚴

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maflcko requested review from m3dwards on May 22, 2026

fanquake commented at 10:11 AM on May 22, 2026: member

I'm going to put this in now, as the caches are pretty much cooked.

fanquake merged this on May 22, 2026

fanquake closed this on May 22, 2026