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Is bionic-updates more stable and secure than the regular bionic when managing apt source records?

Rencently,I upgrade my server from 16 to 18 using apt-get upgrade.But I do not know how to take care of the apt source list.what I did is append the below items in the /etc/apt/sources.list.Is it enough for managing apt resources after upgrading ubuntu.

  1. deb http://security.ubuntu.com/ubuntu bionic-security main
  2. deb http://cz.archive.ubuntu.com/ubuntu bionic main universe
  3. deb http://cz.archive.ubuntu.com/ubuntu bionic-updates main
muru
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focus zheng
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  • Ubuntu Core 16 to Ubuntu Core 18 upgrades do not use apt upgrade as both 16 & 18 are snap only products, only 16.04 & 18.04 used deb packages and thus apt, but you don't use apt upgrade to change releases. The bionic will contain original code, eg. using linux-generic you can see linux-generic | 4.15.0.20.23 | bionic | amd64, arm64, armhf, i386, ppc64el, s390x (ie. what was on original ISOs) where as bionic-updates will have linux-generic | 4.15.0.206.189 | bionic-updates | amd64, arm64, armhf, i386, ppc64el, s390x or the updated package – guiverc Mar 22 '23 at 04:11
  • I find this link is helpful for debian/ubuntu apt questions. see https://debian-handbook.info/browse/stable/apt.html – focus zheng Mar 23 '23 at 07:10

1 Answers1

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The bionic repository will contain original code, eg. using linux-generic as an example, you can find

linux-generic | 4.15.0.20.23 | bionic | amd64, arm64, armhf, i386, ppc64el, s390x

which is what you'll find on Ubuntu 18.04 initial LTS ISOs.

(Ubuntu 18.04.1 & later ISOs include packages from bionic-updates as of the time of ISO creation, thus 18.04.1 may have newer packages than initial 18.04 ISO, but not as modern as say 18.04.2 etc)

The bionic-updates repository will have the updated code, ie.

linux-generic | 4.15.0.206.189 | bionic-updates | amd64, arm64, armhf, i386, ppc64el, s390x

I've used the following to get my detail (note: I removed non bionic lines)

guiverc@d7050-next:/de2900/lubuntu_64$   rmadison linux-generic
..
 linux-generic | 4.15.0.20.23           | bionic           | amd64, arm64, armhf, i386, ppc64el, s390x
 linux-generic | 4.15.0.206.189         | bionic-security  | amd64, arm64, armhf, i386, ppc64el, s390x
 linux-generic | 4.15.0.206.189         | bionic-updates   | amd64, arm64, armhf, i386, ppc64el, s390x
 linux-generic | 4.15.0.208.191         | bionic-proposed  | amd64, arm64, armhf, i386, ppc64el, s390x

I'm not sure I'd use the word stable or secure as in your question; there are more fixes including security fixes in the -updates or -security repositories.

guiverc
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    The online way of getting the detail I used would be https://packages.ubuntu.com/search?keywords=linux-generic&searchon=names&suite=all§ion=all though it presents it differently with lines missing too. – guiverc Mar 22 '23 at 04:18
  • I find this link is helpful for debian/ubuntu apt questions. https://debian-handbook.info/browse/stable/apt.html – focus zheng Mar 23 '23 at 07:09