-v /sys/fs/cgroup:/sys/fs/cgroup:ro

AkihiroSuda / containerized-systemd

Dockerfile examples for containerized systemd (mainly for test environments)

https://github.com/moby/moby/pull/40493

Apache License 2.0

123 stars 20 forks source link

Closed spurin closed 3 years ago

spurin commented 3 years ago

Hi @AkihiroSuda

Appreciate your efforts on this, the project is great and am finding it useful for a use-case I have.

Running systemd in Docker typically involves the use of '-v /sys/fs/cgroup:/sys/fs/cgroup:ro' volume pass thru from the parent.

Are you able to advise on why this is not needed here?

Thanks

AkihiroSuda commented 3 years ago

/sys/fs/cgroup is mounted by default with recent version of Docker, so -v /sys/fs/cgroup is not needed
systemd requires rw access for /sys/fs/cgroup, so :ro should be not be used

spurin commented 3 years ago

Thanks @AkihiroSuda

Grateful for your feedback on this.