saltstack / saltstack/salt

[BUG] docker_network.present does not detect hostname change

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#66,410 1 comment 0 reactions 0 assignees View on GitHub

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bug needs-triage
Dominant language
Python
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Description

Description

I have docker_network.present state and changing the hostname is not detected and container is not recreated.

Setup

Please be as specific as possible and give set-up details.

  • on-prem machine
  • VM (Virtualbox, KVM, etc. please specify)
  • VM running on a cloud service, please be explicit and add details
  • container (Kubernetes, Docker, containerd, etc. please specify)
  • or a combination, please be explicit
  • jails if it is FreeBSD
  • classic packaging
  • onedir packaging
  • used bootstrap to install

Steps to Reproduce the behavior

I have Docker installed on target server:

dpkg -l | grep docker on target server:

docker.io                              24.0.5-0ubuntu1~22.04.1
python3-docker                         5.0.3-1

lsb_release -a on target server:

Description:	Ubuntu 22.04.4 LTS
Release:	22.04
Codename:	jammy

I use the following state:

test:
  docker_container.running:
    - image: alpine:3.18
    - command: sleep infinity

When I then check its hostname it is a random one (as expected, see #66409):

$ docker inspect --format '{{.Config.Hostname}}' test
2923c0067fa9

Then I change the state to:

test:
  docker_container.running:
    - image: alpine:3.18
    - command: sleep infinity
    - hostname: test

I call state.highstate again, and nothing is reported changed by Salt. Running the command again:

$ docker inspect --format '{{.Config.Hostname}}' test
2923c0067fa9

Expected behavior

After state change I expect the output to be:

$ docker inspect --format '{{.Config.Hostname}}' test
test

Versions Report

salt --versions-report
Salt Version:
          Salt: 3007.0
 
Python Version:
        Python: 3.8.10 (default, Nov 22 2023, 10:22:35)
 
Dependency Versions:
          cffi: 1.16.0
      cherrypy: unknown
      dateutil: 2.9.0.post0
     docker-py: Not Installed
         gitdb: Not Installed
     gitpython: Not Installed
        Jinja2: 3.1.3
       libgit2: Not Installed
  looseversion: 1.3.0
      M2Crypto: Not Installed
          Mako: Not Installed
       msgpack: 1.0.8
  msgpack-pure: Not Installed
  mysql-python: Not Installed
     packaging: 24.0
     pycparser: 2.22
      pycrypto: Not Installed
  pycryptodome: 3.20.0
        pygit2: Not Installed
  python-gnupg: 0.5.2
        PyYAML: 6.0.1
         PyZMQ: 26.0.0
        relenv: Not Installed
         smmap: Not Installed
       timelib: 0.3.0
       Tornado: 6.4
           ZMQ: 4.3.5
 
Salt Package Information:
  Package Type: Not Installed
 
System Versions:
          dist: ubuntu 20.04.6 focal
        locale: utf-8
       machine: x86_64
       release: 5.15.0-101-generic
        system: Linux
       version: Ubuntu 20.04.6 focal

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start at the docker_container.running state entry point and reproduce the change with state.highstate, checking the result with docker inspect. Trace how the hostname in the state is compared with the container configuration; done means a hostname change is detected and the container reaches the requested hostname.

Written by the indexing model from the issue text.

Assessment

Tech stack
docker, python
Domain
devops
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Quiet
Clarity
Mostly clear
Newbie friendliness
48/100

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