Reclaim GitHub Runner disk space

GitHub runners provide 14GB of guaranteed available disk space, which is typically sufficient for running k0s's integration tests. However, when free space drops below 15%, Kubernetes initiates pod eviction, leaving only 5GB left on an 84GB disk until it kicks in. In response, streamline disk space usage and remove non-essential data. That's easier than globally overriding Kubernetes eviction defaults for all integration tests. Signed-off-by: Tom Wieczorek <[email protected]> (cherry picked from commit b057923) (cherry picked from commit 603e695) (cherry picked from commit be6211f)
k0sproject · Oct 12, 2023 · 3e9e1d2 · 3e9e1d2
1 parent f2a90cd
commit 3e9e1d2
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diff --git a/.github/workflows/go.yml b/.github/workflows/go.yml
@@ -195,6 +195,9 @@ jobs:
       - name: Check out code into the Go module directory
         uses: actions/checkout@v3
 
+      - name: Reclaim runner disk space
+        run: .github/workflows/reclaim-runner-disk-space.bash
+
       - name: Prepare build environment
         run: .github/workflows/prepare-build-env.sh
 
@@ -290,6 +293,9 @@ jobs:
       - name: Check out code into the Go module directory
         uses: actions/checkout@v3
 
+      - name: Reclaim runner disk space
+        run: .github/workflows/reclaim-runner-disk-space.bash
+
       - name: Prepare build environment
         run: .github/workflows/prepare-build-env.sh
 

diff --git a/.github/workflows/reclaim-runner-disk-space.bash b/.github/workflows/reclaim-runner-disk-space.bash
@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+
+set +eux
+
+if [ -z "$GITHUB_RUN_ID" ]; then
+  echo "Cowardly refusing to destroy a machine that doesn't look like a GitHub runner." >&2
+  exit 0
+fi
+
+df -h /
+
+docker system prune --all --force &
+sudo rm -rf /imagegeneration/installers &
+sudo rm -rf -- "${ANDROID_SDK_ROOT-/opt/nevermind}" &
+
+wait
+
+df -h /