Where can I find the debian-installer iso cd for Ubuntu Server 18.04.3 LTS?

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    What do you mean by debian-installer? You can find Ubuntu iso at ubuntu.com. – Pilot6 Nov 4 '19 at 16:46
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    Please check here: ubuntu.com/download/server – chili555 Nov 4 '19 at 16:47
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    @Pilot6 debian-installer is the name one of the installers that some Ubuntu ISO images use. The other major installers used in official Ubuntu media are curtin and, of course, Ubiquity. – Eliah Kagan Nov 4 '19 at 18:48
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    @chili555 Those are the live server installer ISOs, which use curtin rather than debian-installer. – Eliah Kagan Nov 4 '19 at 18:50
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    @Pilot6 Some people may prefer it. It probably works better than curtin on a few systems and for some kinds of installations. It also offers different selections (via tasksel). I've found the resulting systems with debian-installer and curtin are a bit different. Anyway, debian-installer is still supported in Ubuntu, and there are official ISO images that provide it, including for 18.04.3 LTS. (I'm writing an answer.) – Eliah Kagan Nov 4 '19 at 18:59

Ubuntu Server ISO images with debian-installer continue to be available, including for 18.04.3 LTS. There is no need to use media for an earlier point release. You most likely want ubuntu-18.04.3-server-amd64.iso, though other architectures are available.

On the main download page, the Use the traditional installer link takes you to a section for the "Alternative Ubuntu Server installer." These are the non-live ISO images for Ubuntu Server that use debian-installer (as Ubuntu Server has used exclusively for most of its history). This is in contrast to the more recently introduced live server images, which use curtin.

The link there for 18.04.3 LTS takes you to http://cdimage.ubuntu.com/releases/18.04.3/release/. The alternative server ISOs have names like ubuntu-18.04.3-server-arm64.iso; this indicates they use debian-installer. This is in contrast to the server ISOs offered at http://releases.ubuntu.com/18.04.3/, which have names like ubuntu-18.04.3-live-server-amd64.iso and use curtin.

http://cdimage.ubuntu.com/releases/18.04.3/release/ has other architectures, .torrent and .jigdo files (including for the alternative server ISO), the preinstalled images, and manifest and checksum files for everything offered there.

  • +1. I tried to answer this question, but failed. This is a good answer. I will try to remember how to find these links, so I mark this question as a favourite. – sudodus Nov 4 '19 at 19:45
  • @sudodus Thanks! There's another way to find the links that I didn't cover here, having to do with the different roles served by the the releases, cdimage, and old-releases servers. This relates to why you were able to find an older point release on the old-releases server: images from both the releases and cdimage servers are eventually moved there. It would probably be good for some answer to cover that, and yours relates to it; I don't know if you feel it would be appropriate to edit your post so it answers the question from that angle (and undelete it), but I think that could be helpful. – Eliah Kagan Nov 4 '19 at 19:51
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    I think it is better to create a new question and answer from that other angle, that you describe. So as a consequence I think it is best to delete my answer here. – sudodus Nov 5 '19 at 11:51

I guess you are looking for Ubuntu 18.04.3 server edition. I hope the official Ubuntu links will help you:

  1. https://ubuntu.com/download/server
  2. https://ubuntu.com/download/alternative-downloads#alternate-ubuntu-server-installer- Alternate Downloads!

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