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unix:///var/run/docker.sock isn't found #1140

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mieubrisse opened this issue Aug 21, 2023 · 5 comments · Fixed by #1362
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unix:///var/run/docker.sock isn't found #1140

mieubrisse opened this issue Aug 21, 2023 · 5 comments · Fixed by #1362
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bug Something isn't working critical Critical bug or feature

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@mieubrisse
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mieubrisse commented Aug 21, 2023 •
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What's your CLI version?

0.81.9

Description & steps to reproduce

On some user machines (unknown what exactly causes this), there's no symlink at /var/run/docker.sock, pointing to the actual socket in the user's home directory (~/.docker/run/docker.sock). I'm not sure what causes this, and I've only seen it twice so far, but it MIGHT be related to installing Docker without sudo.

The bad news is, this is a confusing and hard blocker for users (especially those unfamiliar with Docker). This would have been a blocker for a user onboarding I was doing if I didn't know what the problem was (letting me guide the user to creating the symlink).

Desired behavior

Regardless of whether /var/run/docker.sock exists, Kurtosis Just Works

What is the severity of this bug?

Critical; I am blocked and Kurtosis is unusable for me because of this bug.
@mieubrisse mieubrisse added the bug Something isn't working label Aug 21, 2023
@github-actions github-actions bot added the critical Critical bug or feature label Aug 21, 2023
@marioevz
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I found a similar issue running in our hive server:
We have several user-dedicated docker.sock for multiple instances of the docker daemon running on the same host.
Each user has it defined as:

DOCKER_HOST=unix:///var/run/docker-marioevz.sock

It would be nice if this environment variable would be taken into account when running Kurtosis.

@mieubrisse
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Thanks @marioevz ! Sounds like #1072 would is very related to your issue

@mieubrisse
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@galenmarchetti hit this again yesterday after restart

@mieubrisse
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Seeing this again with a user. I'm starting to suspect that when Docker isn't installed via sudo mode, this is what happens

@mieubrisse
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mieubrisse commented Sep 19, 2023 •
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We have a workaround: checking this value in the Docker engine config. However.... I don't want to call this a solution, because really Kurtosis should just handle both cases (whether /var/run/docker.sock is present or not)

Screenshot_2023-09-19_at_16 52 22

@leeederek leeederek mentioned this issue Sep 20, 2023
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@gbouv gbouv mentioned this issue Sep 21, 2023
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gbouv pushed a commit that referenced this issue Sep 22, 2023
fix: Manually locate docker socket (#1362)
7fe4956 
## Description:
Kurtosis tries to manually locate the docker daemon socket before
falling back to docker default behavior. In descending order of
preference, it will:
1. Use the manually set environment variable `DOCKER_HOST` (if not
empty)
2. Use the system wide docker socket `/var/run/docker.sock` if it exists
3. Use the user docker socket `${HOME}/.docker/run/docker.sock` if it
exists
4. Fallback to `docker.FromEnv` which was what we were doing before

Fixes #1140 

## Is this change user facing?
YES
<!-- If yes, please add the "user facing" label to the PR -->
<!-- If yes, don't forget to include docs changes where relevant -->

## References (if applicable):
<!-- Add relevant Github Issues, Discord threads, or other helpful
information. -->
@mieubrisse mieubrisse mentioned this issue Oct 4, 2023
Open
@leeederek leeederek mentioned this issue Oct 12, 2023
Merged
github-merge-queue bot pushed a commit that referenced this issue Oct 13, 2023
@leeederek
docs: add a note for common docker.sock bug (#1544)
446d56f 
## Description:
This PR adds a small note in the Kurtosis installation docs about a
common bug that we've come across where `unix:///var/run/docker.sock`
wasn't found.

## Is this change user facing?
YES

## References (if applicable):
#1140, #1072, and #1469
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fix: Manually locate docker socket kurtosis-tech/kurtosis
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@mieubrisse @marioevz