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That seems ... brave? I have used Alpine a few times in Docker images and it's fantastic, but we did run into incompatibilities due to musl.

by regecks 11y ago

gtaylor 11y ago
I've ran into this as well. Having a hard time remembering what the issue was. Maybe DNS-related?
- stonogo 11y ago
  These incompatibilities arose from software that was written to rely on glibc-specific name resolution quirks. Neither musl nor docker rely on these misplaced expectations, but unfortunately some projects have decided to blame a standards-compliant libc implementation rather than fix their own software.
  - kylequest 11y ago
    It sure would be nice if everything was working according to the standards :-)
  - monkmartinez 11y ago
    I am not familiar enough with the quirks of glibc name resolution to say much more than a lot of my stuff relies on binaries compiled against it. Who, in your opinion is to blame here, and what can we do to fix it?
  - ageofwant 11y ago
    If Alpine does not support the software I depend on I have no use for it. I would like to use the official Docker containers as far as I can but I'm most certainly not going to spend time recompiling third party deps to accomplish that. Shipped products trumps "security" and by god "size" every time, always.
- coleca 11y ago
  Looks like the DNS issue might finally be getting resolved: https://github.com/gliderlabs/docker-alpine/issues/8 https://github.com/gliderlabs/docker-alpine/issues/8
kylequest 11y ago
Alpine is pretty nice though using it in containers you are not getting the best part of it: the hardened kernel. I'd say Alpine is a better fit for the host OS where you have a few moving parts. It will be great for compiled language base images, but even there it might be tricky if you rely on 3rd party packages. Libc compatibility issues are also real. It's great that they are slowing addressing them though.
- daxfohl 11y ago
  Wouldn't CoreOS be the better host though, if just hosting containers is the only goal? Or are there things Alpine would do better?
  - kylequest 11y ago
    I didn't mean to say Alpine is the best host OS option. It's just it's a better idea compared to Ubuntu :-)
  - lisivka 11y ago
    CentOS will be better option for host. Why you need CoreOS?
    - jjm 11y ago
      Beg to differ. You should read the docs for CoreOS. One OS is made to host containers, the other is more general.
      - lisivka 11y ago
        I see same things but under different branding. It's all.
        lisivka 11y ago
        Anonymous coward: explain your downvote, please.

That seems ... brave? I have used Alpine a few times in Docker images and it's fantastic, but we did run into incompatibilities due to musl.

by regecks 11y ago

That seems ... brave? I have used Alpine a few times in Docker images and it's fantastic, but we did run into incompatibilities due to musl.

gtaylor 11y ago

I've ran into this as well. Having a hard time remembering what the issue was. Maybe DNS-related?

stonogo 11y ago
These incompatibilities arose from software that was written to rely on glibc-specific name resolution quirks. Neither musl nor docker rely on these misplaced expectations, but unfortunately some projects have decided to blame a standards-compliant libc implementation rather than fix their own software.
- kylequest 11y ago
  It sure would be nice if everything was working according to the standards :-)
- monkmartinez 11y ago
  I am not familiar enough with the quirks of glibc name resolution to say much more than a lot of my stuff relies on binaries compiled against it. Who, in your opinion is to blame here, and what can we do to fix it?
- ageofwant 11y ago
  If Alpine does not support the software I depend on I have no use for it. I would like to use the official Docker containers as far as I can but I'm most certainly not going to spend time recompiling third party deps to accomplish that. Shipped products trumps "security" and by god "size" every time, always.
coleca 11y ago
Looks like the DNS issue might finally be getting resolved: https://github.com/gliderlabs/docker-alpine/issues/8 https://github.com/gliderlabs/docker-alpine/issues/8

kylequest 11y ago

Alpine is pretty nice though using it in containers you are not getting the best part of it: the hardened kernel. I'd say Alpine is a better fit for the host OS where you have a few moving parts. It will be great for compiled language base images, but even there it might be tricky if you rely on 3rd party packages. Libc compatibility issues are also real. It's great that they are slowing addressing them though.

daxfohl 11y ago
Wouldn't CoreOS be the better host though, if just hosting containers is the only goal? Or are there things Alpine would do better?
- kylequest 11y ago
  I didn't mean to say Alpine is the best host OS option. It's just it's a better idea compared to Ubuntu :-)
- lisivka 11y ago
  CentOS will be better option for host. Why you need CoreOS?
  - jjm 11y ago
    Beg to differ. You should read the docs for CoreOS. One OS is made to host containers, the other is more general.
    - lisivka 11y ago
      I see same things but under different branding. It's all.
      - lisivka 11y ago
        Anonymous coward: explain your downvote, please.