KEP-1547keps/sig-node/1547-building-kubelet-without-docker

Building a Dockerless Kubelet

implementedstablesig-node

KEP on GitHub kep.yaml Ask about this KEP

This proposal outlines a plan to enable building a dockerless Kubelet. We define a dockerless Kubelet as a Kubelet with no "Docker-specific" code and no dependency on the docker/docker Golang package. We define "Docker-specific" code as code which only serves a purpose when Docker is the container runtime. "Docker-specific" code is never executed when the Kubelet uses a remote container runtime (i.e. containerd or CRI-O). Supporting building a dockerless Kubelet is a precursor to moving all "Docker-specific" Kubelet code out-of-tree, in the name of treating Docker like any other container runtime. At a high level, this undertaking is similar to the efforts of sig-cloud-provider to support Building Kubernetes Without In-Tree Cloud Providers. A big thanks to them for their leadership; much of this KEP is based off their great work :)

Facts

Authors: @mattjmcnaughton
Approvers: @dchen1107 @derekwaynecarr
Reviewers: @bentheelder @dims
PRR approvers: none
Tracking issue: #1547(opens GitHub in a new tab) closedcompletedclosed 2020-09-11 23:22 UTCsig/nodestage/stable
Milestones: none
Participating SIGs: sig-testing sig-release sig-cluster-lifecycle
Feature gates: none
Created / last updated: 2020-02-05 / 2020-05-11

Who decided each state, with the evidence.
Decided	Decision	Deciders	Evidence
2020-12-17 17:41 UTC	status_transition KEP-1547 status set to implemented in PR #2193, approved by johnbelamaric; merged by automation (k8s-ci-robot) on 2020-12-17.	@wojtek-t author @johnbelamaric approve_command @johnbelamaric lgtm @k8s-ci-robot merger	Commit kubernetes/enhancements@7eef794bb549a50c6b08c457556ff0eac98a4c6b(opens GitHub in a new tab) StatusChange status ∅ → implemented (2020-12-17)(opens GitHub in a new tab) PullRequest kubernetes/enhancements#2193 Migrate some node KEPs to new template(opens GitHub in a new tab) Review kubernetes/enhancements/pulls/reviews/554835705(opens GitHub in a new tab)
2021-10-20 23:38 UTC	stage_graduation KEP-1547 graduated to stable in PR #3007, approved by justaugustus, jeremyrickard, johnbelamaric; merged by automation (k8s-ci-robot) on 2021-10-20.	@justaugustus approver @justaugustus approve_command @justaugustus lgtm @jeremyrickard approve_command @spiffxp author @johnbelamaric approve_command @k8s-ci-robot merger	Commit kubernetes/enhancements@761668f82fef6727d2cbee10e632c371dfded529(opens GitHub in a new tab) StatusChange stage ∅ → stable (2021-10-08)(opens GitHub in a new tab) PullRequest kubernetes/enhancements#3007 pkg/kepval: enable PRR check for implemented KEPs

Metadata, label and milestone changes, oldest first.Showing 1–10 of 14Rows

Status history
At	Kind	Field	Change	Actor	Evidence
2020-02-09 23:00 UTC	label	needs-sig added	none → needs-sig	@k8s-ci-robot	source(opens GitHub in a new tab)
2020-02-09 23:03 UTC	label	sig/node added	none → sig/node	@k8s-ci-robot	source

Relationships as stored, Person → KEP, from kep.yaml(opens GitHub in a new tab)
Person	Relationship
@mattjmcnaughton GitHub(opens GitHub in a new tab)	—AUTHORED→
@bentheelder GitHub(opens GitHub in a new tab)	—REVIEWS→
@dims GitHub(opens GitHub in a new tab)	—REVIEWS→
@dchen1107

2 nodes · 1 relations

KEP 2

Relations and who declared them
Relation	KEP	Status	Declared by
see also	KEP-1179 Building Kubernetes Without In-Tree Cloud Providers	implemented	none

How they connect

Shortest paths in the graph between this KEP and its SIG or one of its people, up to four hops.

Impact of change

Rows returned by the tool
Kep	Depth	Reached	By hop	Open pull requests	Hop	Keps	Sigs	People
{ "label": "KEP", "key": "keps/sig-node/1547-building-kubelet-without-docker", "title": "Building a Dockerless Kubelet", "url": "https://github.com/kubernetes/enhancements/tree/6ebe0a94771723b3f27cb4a757f0cc22f29e38a2/keps/sig-node/1547-building-kubelet-without-docker", "evidence_id": "5jscqvod6cpd", "number": 1547, "owning_sig": "sig-node", "status": "implemented", "stage": "stable", "creation_date": "2020-02-05", "last_updated": "2020-05-11", "metadata_invalid": false }	2	6	{ "1": { "keps": 1, "sigs": 1, "people": 3 }, "2": { "sigs": 1 } }	not in graph (merged pull requests only)	none	none	none	none
none	none	none	none	none	1	[ { "label": "KEP", "key": "keps/sig-cloud-provider/1179-building-without-in-tree-providers", "title": "Building Kubernetes Without In-Tree Cloud Providers", "url": "https://github.com/kubernetes/enhancements/tree/6ebe0a94771723b3f27cb4a757f0cc22f29e38a2/keps/sig-cloud-provider/1179-building-without-in-tree-providers", "evidence_id": "lw2o7qoe7rzq", "number": 1179, "owning_sig": "sig-cloud-provider", "status": "implemented", "stage": "stable", "metadata_invalid": false } ]	[ { "label": "SIG", "key": "sig-node", "title": "Node", "url": "https://github.com/kubernetes/community/tree/440e496d3a172234d81728df1bfe43849b589adf/sig-node", "evidence_id": "nrsuxu2xcxa7", "display_name": "Node", "sig_label": "node", "in_scope": true } ]	[ { "label": "Person", "key": "mattjmcnaughton", "title": "mattjmcnaughton", "url": "https://github.com/mattjmcnaughton", "evidence_id": "hoqjv4xsb7k3", "login": "mattjmcnaughton", "is_bot": false }, { "label": "Person", "key": "dchen1107", "title": "dchen1107", "url": "https://github.com/dchen1107", "evidence_id": "frhgjvzxlrsh", "login": "dchen1107", "is_bot": false }, { "label": "Person", "key": "derekwaynecarr", "title": "derekwaynecarr", "url": "https://github.com/derekwaynecarr", "evidence_id": "wpnbg5qnq5fl", "login": "derekwaynecarr", "is_bot": false } ]
none	none	none	none	none	2	none	[ { "label": "SIG", "key": "sig-cloud-provider", "title": "Cloud Provider", "url": "https://github.com/kubernetes/community/tree/440e496d3a172234d81728df1bfe43849b589adf/sig-cloud-provider", "evidence_id": "vuj5czxaiv5q", "display_name": "Cloud Provider", "sig_label": "cloud-provider", "in_scope": false } ]	none

Rows returned by the tool
Kep	Depth	Reached	By hop	Open pull requests	Hop	Keps	Sigs	People
{ "label": "KEP", "key": "keps/sig-node/1547-building-kubelet-without-docker", "title": "Building a Dockerless Kubelet", "url": "https://github.com/kubernetes/enhancements/tree/6ebe0a94771723b3f27cb4a757f0cc22f29e38a2/keps/sig-node/1547-building-kubelet-without-docker", "evidence_id": "5jscqvod6cpd", "number": 1547, "owning_sig": "sig-node", "status": "implemented", "stage": "stable", "creation_date": "2020-02-05", "last_updated": "2020-05-11", "metadata_invalid": false }	2	6	{ "1": { "keps": 1, "sigs": 1, "people": 3 }, "2": { "sigs": 1 } }	not in graph (merged pull requests only)	none	none	none	none
none	none	none	none	none	1	[ { "label": "KEP", "key": "keps/sig-cloud-provider/1179-building-without-in-tree-providers", "title": "Building Kubernetes Without In-Tree Cloud Providers", "url": "https://github.com/kubernetes/enhancements/tree/6ebe0a94771723b3f27cb4a757f0cc22f29e38a2/keps/sig-cloud-provider/1179-building-without-in-tree-providers", "evidence_id": "lw2o7qoe7rzq", "number": 1179, "owning_sig": "sig-cloud-provider", "status": "implemented", "stage": "stable", "metadata_invalid": false } ]	[ { "label": "SIG", "key": "sig-node", "title": "Node", "url": "https://github.com/kubernetes/community/tree/440e496d3a172234d81728df1bfe43849b589adf/sig-node", "evidence_id": "nrsuxu2xcxa7", "display_name": "Node", "sig_label": "node", "in_scope": true } ]	[ { "label": "Person", "key": "mattjmcnaughton", "title": "mattjmcnaughton", "url": "https://github.com/mattjmcnaughton", "evidence_id": "hoqjv4xsb7k3", "login": "mattjmcnaughton", "is_bot": false }, { "label": "Person", "key": "dchen1107", "title": "dchen1107", "url": "https://github.com/dchen1107", "evidence_id": "frhgjvzxlrsh", "login": "dchen1107", "is_bot": false }, { "label": "Person", "key": "derekwaynecarr", "title": "derekwaynecarr", "url": "https://github.com/derekwaynecarr", "evidence_id": "wpnbg5qnq5fl", "login": "derekwaynecarr", "is_bot": false } ]
none	none	none	none	none	2	none	[ { "label": "SIG", "key": "sig-cloud-provider", "title": "Cloud Provider", "url": "https://github.com/kubernetes/community/tree/440e496d3a172234d81728df1bfe43849b589adf/sig-cloud-provider", "evidence_id": "vuj5czxaiv5q", "display_name": "Cloud Provider", "sig_label": "cloud-provider", "in_scope": false } ]	none

Kep

Depth

Reached

By hop

Open pull requests

Hop

Keps

Sigs

People

{
  "label": "KEP",
  "key": "keps/sig-node/1547-building-kubelet-without-docker",
  "title": "Building a Dockerless Kubelet",
  "url": "https://github.com/kubernetes/enhancements/tree/6ebe0a94771723b3f27cb4a757f0cc22f29e38a2/keps/sig-node/1547-building-kubelet-without-docker",
  "evidence_id": "5jscqvod6cpd",
  "number": 1547,
  "owning_sig": "sig-node",
  "status": "implemented",
  "stage": "stable",
  "creation_date": "2020-02-05",
  "last_updated": "2020-05-11",
  "metadata_invalid": false
}

{
  "1": {
    "keps": 1,
    "sigs": 1,
    "people": 3
  },
  "2": {
    "sigs": 1
  }
}

not in graph (merged pull requests only)

[
  {
    "label": "KEP",
    "key": "keps/sig-cloud-provider/1179-building-without-in-tree-providers",
    "title": "Building Kubernetes Without In-Tree Cloud Providers",
    "url": "https://github.com/kubernetes/enhancements/tree/6ebe0a94771723b3f27cb4a757f0cc22f29e38a2/keps/sig-cloud-provider/1179-building-without-in-tree-providers",
    "evidence_id": "lw2o7qoe7rzq",
    "number": 1179,
    "owning_sig": "sig-cloud-provider",
    "status": "implemented",
    "stage": "stable",
    "metadata_invalid": false
  }
]

[
  {
    "label": "SIG",
    "key": "sig-node",
    "title": "Node",
    "url": "https://github.com/kubernetes/community/tree/440e496d3a172234d81728df1bfe43849b589adf/sig-node",
    "evidence_id": "nrsuxu2xcxa7",
    "display_name": "Node",
    "sig_label": "node",
    "in_scope": true
  }
]

[
  {
    "label": "Person",
    "key": "mattjmcnaughton",
    "title": "mattjmcnaughton",
    "url": "https://github.com/mattjmcnaughton",
    "evidence_id": "hoqjv4xsb7k3",
    "login": "mattjmcnaughton",
    "is_bot": false
  },
  {
    "label": "Person",
    "key": "dchen1107",
    "title": "dchen1107",
    "url": "https://github.com/dchen1107",
    "evidence_id": "frhgjvzxlrsh",
    "login": "dchen1107",
    "is_bot": false
  },
  {
    "label": "Person",
    "key": "derekwaynecarr",
    "title": "derekwaynecarr",
    "url": "https://github.com/derekwaynecarr",
    "evidence_id": "wpnbg5qnq5fl",
    "login": "derekwaynecarr",
    "is_bot": false
  }
]

[
  {
    "label": "SIG",
    "key": "sig-cloud-provider",
    "title": "Cloud Provider",
    "url": "https://github.com/kubernetes/community/tree/440e496d3a172234d81728df1bfe43849b589adf/sig-cloud-provider",
    "evidence_id": "vuj5czxaiv5q",
    "display_name": "Cloud Provider",
    "sig_label": "cloud-provider",
    "in_scope": false
  }
]

MATCH (k:KEP {key: $key}) RETURN k LIMIT 1 ; MATCH (k:KEP {key: $key}) MATCH path = (k)-[:REPLACES|SUPERSEDED_BY|SEE_ALSO|GATED_BY*1..2]-(n) WHERE n <> k AND (n:KEP OR n:FeatureGate) AND all(x IN nodes(path)[1..-1] WHERE x <> k AND (x:KEP OR (x:FeatureGate AND NOT x.key IN $placeholders))) WITH n, path ORDER BY length(path), [x IN nodes(path) | x.key] WITH n, collect(path)[0] AS path RETURN n AS node, length(path) AS hop, path ORDER BY hop, n.key LIMIT 150 ; UNWIND $keys AS kk MATCH (k:KEP {key: kk}) RETURN k.key AS kep, [(k)-[r_0:OWNED_BY]->(s_0:SIG) WHERE coalesce(r_0.valid_to, $open) = $open | s_0] AS sigs, [(p_1:Person)-[r_1:AUTHORED]->(k) WHERE coalesce(r_1.valid_to, $open) = $open AND coalesce(p_1.is_bot, false) = false | p_1] AS authors, [(p_2:Person)-[r_2:APPROVES]->(k) WHERE coalesce(r_2.valid_to, $open) = $open AND coalesce(p_2.is_bot, false) = false | p_2] AS approvers, [(k)-[r_3:TRACKED_BY]->(i_3:Issue) WHERE coalesce(r_3.valid_to, $open) = $open AND i_3.state = 'open' | i_3] AS open_issues LIMIT 200

Building a Dockerless Kubelet

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