Lowering perms to CAP_NET_ADMIN #280
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| name: CI | |
| on: | |
| push: | |
| branches: [ main ] | |
| pull_request: | |
| branches: [ main ] | |
| jobs: | |
| lint: | |
| name: Lint | |
| runs-on: ubuntu-latest | |
| steps: | |
| - name: Check out code | |
| uses: actions/checkout@v4 | |
| - name: Set up Go | |
| uses: actions/setup-go@v5 | |
| with: | |
| go-version: '1.25' | |
| check-latest: true | |
| - name: Cache Go modules | |
| uses: actions/cache@v4 | |
| with: | |
| path: | | |
| ~/.cache/go-build | |
| ~/go/pkg/mod | |
| key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }} | |
| restore-keys: | | |
| ${{ runner.os }}-go- | |
| - name: Download and verify dependencies | |
| run: make deps | |
| - name: Install golangci-lint | |
| run: | | |
| # binary will be $(go env GOPATH)/bin/golangci-lint | |
| curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/HEAD/install.sh | sh -s -- -b $(go env GOPATH)/bin v2.4.0 | |
| golangci-lint --version | |
| - name: Run linting | |
| run: make lint | |
| test: | |
| name: Test | |
| strategy: | |
| fail-fast: false | |
| matrix: | |
| os: [ubuntu-latest, macos-latest] | |
| runs-on: ${{ matrix.os }} | |
| steps: | |
| - name: Check out code | |
| uses: actions/checkout@v4 | |
| - name: Set up Go | |
| uses: actions/setup-go@v5 | |
| with: | |
| go-version: '1.25' | |
| check-latest: true | |
| - name: Cache Go modules | |
| uses: actions/cache@v4 | |
| with: | |
| path: | | |
| ~/.cache/go-build | |
| ~/go/pkg/mod | |
| key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }} | |
| restore-keys: | | |
| ${{ runner.os }}-go- | |
| - name: Download and verify dependencies | |
| run: make deps | |
| # Before (default): | |
| # - /etc/resolv.conf -> /run/systemd/resolve/stub-resolv.conf | |
| # - stub-resolv.conf points to 127.0.0.53 (systemd-resolved stub listener) | |
| # - systemd-resolved forwards to the real upstream file: | |
| # /run/systemd/resolve/resolv.conf | |
| # Flow: /etc/resolv.conf -> stub-resolv.conf (127.0.0.53) -> systemd-resolved -> /run/systemd/resolve/resolv.conf | |
| # | |
| # After (bind-mount): | |
| # - /etc/resolv.conf is bind-mounted to /run/systemd/resolve/resolv.conf | |
| # - processes read upstream nameservers directly from /run/systemd/resolve/resolv.conf | |
| # Flow: /etc/resolv.conf -> /run/systemd/resolve/resolv.conf | |
| # | |
| # This makes processes talk directly to the upstream DNS servers and | |
| # bypasses the systemd-resolved *stub listener* (127.0.0.53). | |
| # | |
| # Important nuance: systemd-resolved itself is NOT stopped; it still runs and updates | |
| # /run/systemd/resolve/resolv.conf. Because this is a bind (not a copy), updates to the | |
| # upstream list are visible. Trade-off: we lose the stub’s features (caching, | |
| # split-DNS/VPN per-interface behavior, DNSSEC/DoT/DoH mediation, mDNS/LLMNR). | |
| # | |
| # Reason: network namespaces have their own network stack (interfaces, routes and loopback). | |
| # A process inside a network namespace resolves 127.0.0.53 against that namespace’s loopback, not the host’s, | |
| # and systemd-resolved usually listens on the host loopback. As a result the stub at 127.0.0.53 is often | |
| # unreachable from an isolated namespace and DNS lookups fail. | |
| # Bind-mounting /run/systemd/resolve/resolv.conf over /etc/resolv.conf forces processes to use the upstream | |
| # nameservers directly, avoiding that failure. | |
| - name: Change DNS configuration | |
| if: runner.os == 'Linux' | |
| run: sudo mount --bind /run/systemd/resolve/resolv.conf /etc/resolv.conf | |
| - name: Run unit tests | |
| run: make unit-test | |
| - name: Run e2e tests | |
| run: make e2e-test | |
| if: matrix.os == 'ubuntu-latest' | |
| - name: Check build | |
| run: make build |