Description

Podman / Fedora 44 / RHEL 9+ support for make test

NOTE: RedHat 8 was End of Life May 2024.

Docker CE is no longer installable or functional on Fedora 38+ and RHEL 9+ from the official
Docker repository. Podman (with podman-docker and podman-compose) is the supported
replacement on those platforms. This release makes the entire test infrastructure
runtime-agnostic so that make test works with either Docker or Podman transparently.

Changes by area:

• testutil/runtime.go (new): central runtime detection; auto-detects whether Docker or
  Podman is in use (including podman-docker shims), sets DOCKER_HOST to the Podman socket
  so the Docker SDK can communicate with it, and exposes ContainerRuntime() and
  ContainerComposeCmdPrefix() helpers used everywhere else

• t/t.go and testutil/bulk.go: all hardcoded docker compose --compatibility
  invocations replaced with ContainerComposeCmdPrefix(); all docker logs, docker cp, and
  docker exec calls replaced with ContainerRuntime()

• contrib/Dockerfile: pre-creates all /data/zero*, /data/alpha*, /data/dg1, and
  /data/dg0.1 directories; Podman's crun OCI runtime does not auto-create a container's
  working_dir at startup (unlike Docker's runc), which left containers stuck in "Created"
  state

• t/Makefile: new install-deps-docker-linux-dnf target installs
  podman podman-docker podman-compose and enables the Podman socket instead of attempting the
  broken Docker CE install path on Fedora/RHEL

• t/scripts/check-deps-docker.sh: rewritten to detect and validate Podman on
  dnf-based systems instead of requiring Docker CE

• t/scripts/check-docker-available-memory.sh: reads /proc/meminfo directly on Linux
  (works for both Docker and Podman) rather than calling docker info

• Makefile (root): new $(DOCKER) variable falls back to podman when docker is
  absent, used for image build targets

• Fixed

  • fix(build): detect jemalloc under /usr/lib64 so a dnf-installed jemalloc-devel is found on
    Fedora/RHEL multilib systems
  • fix(build): compile the bundled jemalloc 5.3.1 with --disable-cxx to avoid the
    std::__throw_bad_alloc build failure on GCC 13+ (e.g. Fedora 44 / GCC 15); dgraph only links
    jemalloc's C API, so the C++ layer is not needed
  • fix(build): chain the jemalloc build recipe with && (was ;) so a failed compile no longer
    falls through to make install, and clear any stale /tmp/jemalloc-temp before rebuilding
  • fix(test): add the Docker CE repo via a downloaded .repo file instead of
    dnf config-manager --add-repo, which was removed in DNF5 (Fedora 41+) and broke
    make setup on Fedora

• Added

  • test: add contrib/smoke-test.sh to bring up a local zero+alpha and verify
    schema/mutation/query against a freshly built binary

• Changed

  • build: linux-dependency now auto-detects the package manager (apt/dnf/pacman) and installs the
    C/C++ toolchain + protobuf-compiler, so build prerequisites work on Fedora/RHEL and Arch in
    addition to Debian/Ubuntu

• Docs

  • docs(contributing): document building Dgraph on Fedora/RHEL

Checklist

• The PR title follows the
  Conventional Commits syntax, leading
  with fix:, feat:, chore:, ci:, etc.
• Code compiles correctly and linting (via trunk) passes locally
• Tests added for new functionality, or regression tests for bug fixes added as applicable
• [-] For public APIs, new features, etc., a PR on the
  docs repo staged and linked here. This process can
  be simplified by going to the public docs site and clicking the
  "Edit this page" button at the bottom of page(s) relevant to your changes. Ensure that you
  indicate in the PR that this is an unreleased feature so that it does not get merged into
  the main docs prematurely.

Instructions

• The PR title should follow the
  Conventional Commits syntax, leading
  with fix:, feat:, chore:, ci:, etc. Ensure any breaking changes are appropriately marked
  with a !. For instance, feat(dql)!: Remove the foobar func would indicate that this is a
  breaking change to the DQL syntax.
• The description should briefly explain what the PR is about. In the case of a bugfix, describe or
  link to the bug.
• In the checklist section, check the boxes in that are applicable, using [x] syntax.
  • If not applicable, remove the entire line. Only leave the box unchecked if you intend to come
    back and check the box later.
• Delete the Instructions line and everything below it, to indicate you have read and are
  following these instructions. 🙂

Thank you for your contribution to Dgraph!