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| -rw-r--r-- | remote-dev/README.md | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/remote-dev/README.md b/remote-dev/README.md index a17c913..172be80 100644 --- a/remote-dev/README.md +++ b/remote-dev/README.md @@ -168,21 +168,22 @@ grep "^$USER:" /etc/subuid /etc/subgid || \ sudo usermod --add-subuids 100000-165535 --add-subgids 100000-165535 "$USER" ``` -Then enable cgroups v2 (required for rootless CPU/memory limits on -Ubuntu 20.04, which still defaults to v1): +Then (optional, **only** if you need rootless CPU/memory limits) enable +cgroups v2. Ubuntu 20.04 still defaults to v1; flipping this requires a +reboot and affects every workload on the box, so skip unless you have a +concrete need: ```sh sudo sed -i 's|^GRUB_CMDLINE_LINUX_DEFAULT="\(.*\)"|GRUB_CMDLINE_LINUX_DEFAULT="\1 systemd.unified_cgroup_hierarchy=1"|' /etc/default/grub -sudo update-grub -sudo reboot +sudo update-grub && sudo reboot ``` -Verify after reboot: +Verify: ```sh -stat -fc %T /sys/fs/cgroup/ # → cgroup2fs podman info | grep -E 'cgroupVersion|graphDriverName|networkBackend' -# expected: cgroupVersion: v2, graphDriverName: overlay, networkBackend: netavark +# expected: graphDriverName: overlay, networkBackend: netavark +# cgroupVersion: v1 is fine — only blocks --memory/--cpus flags. podman run --rm docker.io/library/alpine echo hi ``` |