9 ms·

If MacOS doesn't have certain linux kernel features, neither does FreeBSD. How can Docker run on FreeBSD when FreeBSD has no cgroups? I think you misread/misint

by fnj 10y ago

If MacOS doesn't have certain linux kernel features, neither does FreeBSD. How can Docker run on FreeBSD when FreeBSD has no cgroups? I think you misread/misinterpreted your reference.

tonyhb 10y ago
xhyve and bhyve virtualization built into the BSD kernels. docker for mac now runs a tiny linux vm directly on osx
2trill2spill 10y ago
> How can Docker run on FreeBSD when FreeBSD has no cgroups? I think you misread/misinterpreted your reference. FreeBSD can run 64 bit and 32 bit Linux binaries via it's Linux emulator[1]. Plus FreeBSD has had containers since FreeBSD 4 which was released in March of 2000, except containers on FreeBSD are called jails. > If MacOS doesn't have certain linux kernel features, neither does FreeBSD. Just because one operating system doesn't have a feature that does not mean a different operating system does not have that feature. [1] https://www.freebsd.org/doc/handbook/linuxemu.html https://www.freebsd.org/doc/handbook/linuxemu.html
- indexerror 10y ago
  Jails are considerably different than containers. Jails are more like chroot jails on linux instead. Edit: My viewpoint was focused more on the composability aspect of containers. But I stand corrected otherwise.
  - 2trill2spill 10y ago
    > Jails are considerably different than containers. Jails are more like chroot jails on linux instead. Thats incorrect both jails and "containers" are examples of OS level virtualization[1]. Instead of virtualizing the hardware you virtualize the operating system, ie system call table. [1]: https://en.wikipedia.org/wiki/Operating-system-level_virtualization https://en.wikipedia.org/wiki/Operating-system-level_virtual...
  - empthought 10y ago
    No, jails are basically containers. Docker on FreeBSD uses jails for isolation -- see the wiki page at https://wiki.freebsd.org/Docker https://wiki.freebsd.org/Docker

by fnj 10y ago

If MacOS doesn't have certain linux kernel features, neither does FreeBSD. How can Docker run on FreeBSD when FreeBSD has no cgroups? I think you misread/misinterpreted your reference.

tonyhb 10y ago

xhyve and bhyve virtualization built into the BSD kernels. docker for mac now runs a tiny linux vm directly on osx

2trill2spill 10y ago

> How can Docker run on FreeBSD when FreeBSD has no cgroups? I think you misread/misinterpreted your reference. FreeBSD can run 64 bit and 32 bit Linux binaries via it's Linux emulator[1]. Plus FreeBSD has had containers since FreeBSD 4 which was released in March of 2000, except containers on FreeBSD are called jails. > If MacOS doesn't have certain linux kernel features, neither does FreeBSD. Just because one operating system doesn't have a feature that does not mean a different operating system does not have that feature. [1] https://www.freebsd.org/doc/handbook/linuxemu.html https://www.freebsd.org/doc/handbook/linuxemu.html

indexerror 10y ago
Jails are considerably different than containers. Jails are more like chroot jails on linux instead. Edit: My viewpoint was focused more on the composability aspect of containers. But I stand corrected otherwise.
- 2trill2spill 10y ago
  > Jails are considerably different than containers. Jails are more like chroot jails on linux instead. Thats incorrect both jails and "containers" are examples of OS level virtualization[1]. Instead of virtualizing the hardware you virtualize the operating system, ie system call table. [1]: https://en.wikipedia.org/wiki/Operating-system-level_virtualization https://en.wikipedia.org/wiki/Operating-system-level_virtual...
- empthought 10y ago
  No, jails are basically containers. Docker on FreeBSD uses jails for isolation -- see the wiki page at https://wiki.freebsd.org/Docker https://wiki.freebsd.org/Docker