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docker daemon gets started on nodes #243

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dustymabe opened this issue Jul 3, 2020 · 6 comments
Closed

docker daemon gets started on nodes #243

dustymabe opened this issue Jul 3, 2020 · 6 comments
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GA

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@dustymabe
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In FCOS we include the moby-engine package to provide the docker CLI/daemon for users who want that. In OKD I don't think we want the service to start at all as we run containers with cri-o (or in some very few cases podman). Right now the docker service is socket activated and I think something within kubernetes/openshift is hitting that socket and starting the daemon.

Jul 03 19:51:29 node0 hyperkube[1016]: I0703 19:51:29.209861    1016 dynamic_cafile_content.go:167] Starting client-ca-bundle::/etc/kubernetes/kubelet-ca.crt
Jul 03 19:51:29 node0 systemd[1]: Starting Docker Application Container Engine...

Should we mask the service for now? It would save us the 150+ MiB hit:

$ systemctl status docker | grep Memory
     Memory: 182.2M

Versions

  • installer: openshift-install-linux-4.5.0-0.okd-2020-06-29-110348-beta6
  • starting FCOS: 32.20200629.2.0
@vrutkovs vrutkovs added this to the GA milestone Jul 3, 2020
@vrutkovs
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vrutkovs commented Jul 3, 2020

Right, we should disable it with a MachineConfig

@vrutkovs vrutkovs mentioned this issue Jul 4, 2020
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@LorbusChris
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IMO docker should be disabled by preset in FCOS (in all of Fedora even!).

@LorbusChris
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Thank you for reporting this @dustymabe!

@vrutkovs
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vrutkovs commented Jul 7, 2020

Fixed since https://origin-release.apps.ci.l2s4.p1.openshiftapps.com/releasetag/4.5.0-0.okd-2020-07-06-212947

@vrutkovs vrutkovs closed this as completed Jul 7, 2020
@Fodoj
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Fodoj commented Sep 24, 2020

Any reason to have Docker installed at all? I know it comes by default with FCOS, but why would OKD need it installed by default.

@LorbusChris
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@Fodoj OKD uses FCOS' rpm-ostree composes and we don't currently plan on doing an OKD-specific compose.

binnes added a commit to binnes/okd that referenced this issue Jul 11, 2023
@binnes @brianinnes
add main working group information (okd-project#243)
b89c4fd 
* Add docker/podman instructions for site update and fix broken links after switch to MkDocs site (okd-project#238) (okd-project#2)

* move from master to main branch

* remove blog entry re creating blog on old site

* Add site README

* add CNAME in docs so gets published

* Delete CNAME

* fix CNAME for production site

Signed-off-by: Brian Innes <[email protected]>

* fixed links re MkDocs going live + container tooling instructions

Signed-off-by: Brian Innes <[email protected]>

* added Windows support for docker based tooling

Signed-off-by: Brian Innes <[email protected]>

* added podman instructions

Signed-off-by: Brian Innes <[email protected]>

* tidy up commands

Signed-off-by: Brian Innes <[email protected]>

Co-authored-by: Brian Innes <[email protected]>

Co-authored-by: Brian Innes <[email protected]>

* added primary working group information

Signed-off-by: Brian Innes <[email protected]>

Co-authored-by: Brian Innes <[email protected]>
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@Fodoj @vrutkovs @dustymabe @LorbusChris