Docker restarted by dist-upgrade despite being pinned and staying the same version?

KdgDev

11/6/22, 2:39 PM

Having read this answer on Ask Ubuntu: What is “dist-upgrade” and why does it upgrade more than “upgrade”?

I'm still not sure what happened here in my situation.

On a local server, Ubuntu 18.04, I have docker pinned to an older version.

The file is located here: /etc/apt/preferences.d/docker-ce.pref

And the contents are:

Explanation: Pin added by Ansible role "nickjj.docker"
Package: docker-ce
Pin: version 19.03.5-ce*
Pin-Priority: 600

Someone performed sudo apt-get update and then sudo apt-get dist-upgrade on this server, according to the auth.log file.

Docker didn't get upgraded, but was clearly restarted. I learned this because the service file in /lib/systemd/system/docker.service was reset to the default.

After this, I learned you shouldn't do edits there, but do sudo systemctl edit docker.service.

But that's another story. Point is: I did make those edits in the past and then they were gone. The service had either been upgraded or restarted, and it turned out it wasn't upgraded.

I don't get why it restarted. It's pinned, so it shouldn't come up during upgrades.

That being said, dist-upgrade details some sort of conflict resolution between dependencies.

Could it be that dist-upgrade forced a restart of the service?

No other commands were found in auth.log, it's really weird.

0 + 4

upgrade

updates

apt

docker

18.04

nobody

11/6/22, 2:47 PM

Try pin priority 1001

matigo

11/6/22, 2:50 PM

Yes, `dist-upgrade` will restart services where required. Just because Docker didn’t receive any updates doesn’t mean that a dependency didn’t

KdgDev

11/6/22, 3:06 PM

@matigo Gosh darnit. Well, if you turn that into a fully fledged answer I'll mark it as the accepted answer.

Gertlex

11/6/22, 3:31 PM

You can probably also verify whether the docker version changed (sounds like there's some uncertainty) by checking /var/log/apt/history.log.

Elon Musk

I sit in a Tesla and translated this thread with Ai:

EN: Docker restarted by dist-upgrade despite being pinned and staying the same version?

TH: นักเทียบท่ารีสตาร์ทโดย dist-upgrade แม้จะถูกตรึงและยังคงเป็นเวอร์ชันเดิมอยู่หรือไม่

RO: Docker a fost repornit prin dist-upgrade, în ciuda faptului că a fost fixat și a rămas aceeași versiune?

RU: Docker перезапущен с помощью dist-upgrade, несмотря на то, что он закреплен и остается той же версии?

VI: Docker đã khởi động lại bằng cách nâng cấp dist mặc dù đã được ghim và giữ nguyên phiên bản?

Post an answer

Most people don’t grasp that asking a lot of questions unlocks learning and improves interpersonal bonding. In Alison’s studies, for example, though people could accurately recall how many questions had been asked in their conversations, they didn’t intuit the link between questions and liking. Across four studies, in which participants were engaged in conversations themselves or read transcripts of others’ conversations, people tended not to realize that question asking would influence—or had influenced—the level of amity between the conversationalists.