ci: Introduce yamllint for actions workflow files

Signed-off-by: Jintao Zhang <zhangjintao9020@gmail.com>

.github/ISSUE_TEMPLATE/bug-report.yml

@@ -1,9 +1,10 @@
+---
 name: Bug Report
 description: Report a bug encountered while operating Etcd
 labels:
-- type/bug
+  - type/bug
 body:
-- type: markdown
+  - type: markdown
     attributes:
       value: |
         Please read https://github.com/etcd-io/etcd/blob/main/Documentation/contributor-guide/reporting_bugs.md
@@ -11,33 +12,33 @@ body:
         Please fill the form below and provide as much information as possible.
         Not doing so may result in your bug not being addressed in a timely manner.
 
-- type: textarea
+  - type: textarea
     id: problem
     attributes:
       label: What happened?
     validations:
       required: true
 
-- type: textarea
+  - type: textarea
     id: expected
     attributes:
       label: What did you expect to happen?
     validations:
       required: true
 
-- type: textarea
+  - type: textarea
     id: repro
     attributes:
       label: How can we reproduce it (as minimally and precisely as possible)?
     validations:
       required: true
 
-- type: textarea
+  - type: textarea
     id: additional
     attributes:
       label: Anything else we need to know?
 
-- type: textarea
+  - type: textarea
     id: etcdVersion
     attributes:
       label: Etcd version (please run commands below)
@@ -56,7 +57,7 @@ body:
     validations:
       required: true
 
-- type: textarea
+  - type: textarea
     id: config
     attributes:
       label: Etcd configuration (command line flags or environment variables)
@@ -67,7 +68,7 @@ body:
 
         </details>
 
-- type: textarea
+  - type: textarea
     id: etcdDebugInformation
     attributes:
       label: Etcd debug information (please run commands below, feel free to obfuscate the IP address or FQDN in the output)
@@ -84,7 +85,7 @@ body:
 
         </details>
 
-- type: textarea
+  - type: textarea
     id: logs
     attributes:
       label: Relevant log output

.github/ISSUE_TEMPLATE/config.yml

@@ -1,5 +1,6 @@
+---
 blank_issues_enabled: false
 contact_links:
-- name: Question
+  - name: Question
     url: https://github.com/etcd-io/etcd/discussions
     about: Question relating to Etcd

.github/ISSUE_TEMPLATE/feature-request.yml

@@ -1,16 +1,17 @@
+---
 name: Feature request
 description: Provide idea for a new feature
 labels:
-- type/feature
+  - type/feature
 body:
-- type: textarea
+  - type: textarea
     id: feature
     attributes:
       label: What would you like to be added?
     validations:
       required: true
 
-- type: textarea
+  - type: textarea
     id: rationale
     attributes:
       label: Why is this needed?

.github/ISSUE_TEMPLATE/membership-request.yml

@@ -1,16 +1,17 @@
+---
 name: Membership nomination
 description: Nominate new etcd members
 labels:
-- area/community
+  - area/community
 body:
-- type: textarea
+  - type: textarea
     id: feature
     attributes:
       label: Who would you like to nominate?
     validations:
       required: true
 
-- id: requirements
+  - id: requirements
     type: checkboxes
     attributes:
       label: Requirements
@@ -22,7 +23,7 @@ body:
         - label: The members are being sponsored by two current reviewers or a current maintainer.
           required: true
 
-- type: textarea
+  - type: textarea
     id: rationale
     attributes:
       label: How do the new members meet the regular active contribution requirements?

.github/ISSUE_TEMPLATE/test-flake.yml

@@ -1,33 +1,34 @@
+---
 name: Flaking Test
 description: Report flaky tests
 labels:
-- type/flake
+  - type/flake
 body:
-- type: textarea
+  - type: textarea
     id: workflows
     attributes:
       label: Which github workflows are flaking?
     validations:
       required: true
 
-- type: textarea
+  - type: textarea
     id: tests
     attributes:
       label: Which tests are flaking?
     validations:
       required: true
 
-- type: input
+  - type: input
     id: link
     attributes:
       label: Github Action link
 
-- type: textarea
+  - type: textarea
     id: reason
     attributes:
       label: Reason for failure (if possible)
 
-- type: textarea
+  - type: textarea
     id: additional
     attributes:
       label: Anything else we need to know?

.github/dependabot.yml

@@ -1,3 +1,4 @@
+---
 version: 2
 updates:
   - package-ecosystem: github-actions

.github/stale.yml

@@ -1,3 +1,4 @@
+---
 # Configuration for probot-stale - https://github.com/probot/stale
 
 # Number of days of inactivity before an Issue or Pull Request becomes stale

.github/workflows/build.yaml

@@ -1,3 +1,4 @@
+---
 name: Build
 on: [push, pull_request]
 permissions: read-all

.github/workflows/codeql-analysis.yml

@@ -1,3 +1,4 @@
+---
 # For most projects, this workflow file will not need changing; you simply need
 # to commit it to your repository.
 #
@@ -13,10 +14,10 @@ name: "CodeQL"
 
 on:
   push:
-    branches: [ main, release-3.4, release-3.5, release-3.6 ]
+    branches: [main, release-3.4, release-3.5, release-3.6]
   pull_request:
     # The branches below must be a subset of the branches above
-    branches: [ main ]
+    branches: [main]
   schedule:
     - cron: '20 14 * * 5'
 
@@ -34,7 +35,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        language: [ 'go' ]
+        language: ['go']
         # CodeQL supports [ 'cpp', 'csharp', 'go', 'java', 'javascript', 'python' ]
         # Learn more:
         # https://docs.github.com/en/free-pro-team@latest/github/finding-security-vulnerabilities-and-errors-in-your-code/configuring-code-scanning#changing-the-languages-that-are-analyzed

.github/workflows/contrib.yaml

@@ -1,3 +1,4 @@
+---
 name: Test contrib/mixin
 on: [push, pull_request]
 permissions: read-all

.github/workflows/coverage.yaml

@@ -1,3 +1,4 @@
+---
 name: Coverage
 on: [push]
 permissions: read-all

.github/workflows/e2e-arm64.yaml

@@ -1,3 +1,4 @@
+---
 name: E2E-arm64
 on:
   schedule:

.github/workflows/e2e.yaml

@@ -1,3 +1,4 @@
+---
 name: E2E
 on: [push, pull_request]
 permissions: read-all

.github/workflows/fuzzing.yaml

@@ -1,3 +1,4 @@
+---
 name: Fuzzing v3rpc
 on: [push, pull_request]
 permissions: read-all

.github/workflows/go-version.yaml

@@ -1,3 +1,4 @@
+---
 name: Go version setup
 permissions: read-all
 

.github/workflows/govuln.yaml

@@ -1,3 +1,4 @@
+---
 name: Go Vulnerability Checker
 on: [push, pull_request]
 permissions: read-all

.github/workflows/grpcproxy.yaml

@@ -1,3 +1,4 @@
+---
 name: grpcProxy-tests
 on: [push, pull_request]
 permissions: read-all

.github/workflows/measure-test-flakiness.yaml

@@ -1,3 +1,4 @@
+---
 name: Measure Test Flakiness
 
 on:

.github/workflows/release.yaml

@@ -1,3 +1,4 @@
+---
 name: Release
 on: [push, pull_request]
 permissions: read-all

.github/workflows/robustness-nightly.yaml

@@ -1,3 +1,4 @@
+---
 name: Robustness Nightly
 permissions: read-all
 on:

.github/workflows/robustness-template-arm64.yaml

@@ -1,3 +1,4 @@
+---
 name: Reusable Robustness Workflow
 on:
   workflow_call:
@@ -69,4 +70,3 @@ jobs:
         with:
           name: ${{ inputs.artifactName }}
           path: /tmp/results/*
-

.github/workflows/robustness-template.yaml

@@ -1,3 +1,4 @@
+---
 name: Reusable Robustness Workflow
 on:
   workflow_call:

.github/workflows/robustness.yaml

@@ -1,3 +1,4 @@
+---
 name: Robustness
 on: [push, pull_request]
 permissions: read-all

.github/workflows/scorecards.yml

@@ -1,3 +1,4 @@
+---
 name: Scorecards supply-chain security
 on:
   # Only the default branch is supported.
@@ -5,7 +6,7 @@ on:
   schedule:
     - cron: '45 1 * * 0'
   push:
-    branches: [ "main" ]
+    branches: ["main"]
 
 # Declare default permissions as read only.
 permissions: read-all

.github/workflows/static-analysis.yaml

@@ -1,3 +1,4 @@
+---
 name: Static Analysis
 on: [push, pull_request]
 permissions: read-all

.github/workflows/tests-arm64.yaml

@@ -1,3 +1,4 @@
+---
 name: Tests-arm64
 on:
   schedule:

.github/workflows/tests.yaml

@@ -1,3 +1,4 @@
+---
 name: Tests
 on: [push, pull_request]
 permissions: read-all

.golangci.yaml

@@ -1,17 +1,14 @@
+---
 run:
   timeout: 30m
-  skip-files:
-    - "^zz_generated.*"
-
+  skip-files: [^zz_generated.*]
 issues:
   max-same-issues: 0
   # Excluding configuration per-path, per-linter, per-text and per-source
   exclude-rules:
     # exclude ineffassing linter for generated files for conversion
     - path: conversion\.go
-      linters:
-        - ineffassign
-
+      linters: [ineffassign]
 linters:
   disable-all: true
   enable:  # please keep this alphabetized
@@ -27,15 +24,14 @@ linters:
     - stylecheck
     - unused
     - unconvert  # Remove unnecessary type conversions
-
 linters-settings:  # please keep this alphabetized
   goimports:
     local-prefixes: go.etcd.io  # Put imports beginning with prefix after 3rd-party packages.
   staticcheck:
     checks:
-      - "all"
-      - "-SA1019" # TODO(fix) Using a deprecated function, variable, constant or field
-      - "-SA2002"  # TODO(fix) Called testing.T.FailNow or SkipNow in a goroutine, which isn’t allowed
+      - all
+      - -SA1019  # TODO(fix) Using a deprecated function, variable, constant or field
+      - -SA2002  # TODO(fix) Called testing.T.FailNow or SkipNow in a goroutine, which isn’t allowed
   stylecheck:
     checks:
-      - "ST1019"  # Importing the same package multiple times.
+      - ST1019  # Importing the same package multiple times.

.yamllint

@@ -0,0 +1,7 @@
+---
+
+extends: default
+rules:
+  line-length: disable
+  truthy: disable
+  comments: disable

Makefile

@@ -64,7 +64,7 @@ fuzz:
 
 verify: verify-gofmt verify-bom verify-lint verify-dep verify-shellcheck verify-goword \
 	verify-govet verify-license-header verify-receiver-name verify-mod-tidy verify-shellcheck \
-	verify-shellws verify-proto-annotations verify-genproto verify-goimport
+	verify-shellws verify-proto-annotations verify-genproto verify-goimport verify-yamllint
 fix: fix-bom fix-lint
 	./scripts/fix.sh
 
@@ -132,6 +132,10 @@ verify-genproto:
 verify-goimport:
 	PASSES="goimport" ./scripts/test.sh
 
+.PHONY: verify-yamllint
+verify-yamllint:
+	yamllint .
+
 # Cleanup
 
 clean:

codecov.yml

@@ -1,17 +1,16 @@
+---
 codecov:
-  token: "6040de41-c073-4d6f-bbf8-d89256ef31e1"
+  token: 6040de41-c073-4d6f-bbf8-d89256ef31e1
   disable_default_path_fixes: true
-
 fixes:
-  - "go.etcd.io/etcd/api/v3/::api/"
-  - "go.etcd.io/etcd/client/v3/::client/v3/"
-  - "go.etcd.io/etcd/client/v2/::client/v2/"
-  - "go.etcd.io/etcd/etcdctl/v3/::etcdctl/"
-  - "go.etcd.io/etcd/pkg/v3/::pkg/"
-  - "go.etcd.io/etcd/server/v3/::server/"
-
+  - go.etcd.io/etcd/api/v3/::api/
+  - go.etcd.io/etcd/client/v3/::client/v3/
+  - go.etcd.io/etcd/client/v2/::client/v2/
+  - go.etcd.io/etcd/etcdctl/v3/::etcdctl/
+  - go.etcd.io/etcd/pkg/v3/::pkg/
+  - go.etcd.io/etcd/server/v3/::server/
 ignore:
-  - "**/*.pb.go"
-  - "**/*.pb.gw.go"
-  - "tests/**/*"
-  - "go.etcd.io/etcd/tests/**/*"
+  - '**/*.pb.go'
+  - '**/*.pb.gw.go'
+  - tests/**/*
+  - go.etcd.io/etcd/tests/**/*

contrib/mixin/test.yaml

@@ -1,17 +1,15 @@
-rule_files:
-  - manifests/etcd-prometheusRules.yaml
-
+---
+rule_files: [manifests/etcd-prometheusRules.yaml]
 evaluation_interval: 1m
-
 tests:
   - interval: 1m
     input_series:
-      - series: 'up{job="etcd",instance="10.10.10.0"}'
-        values: '1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0'
-      - series: 'up{job="etcd",instance="10.10.10.1"}'
-        values: '1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0'
-      - series: 'up{job="etcd",instance="10.10.10.2"}'
-        values: '1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0'
+      - series: up{job="etcd",instance="10.10.10.0"}
+        values: 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0
+      - series: up{job="etcd",instance="10.10.10.1"}
+        values: 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0
+      - series: up{job="etcd",instance="10.10.10.2"}
+        values: 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0
     alert_rule_test:
       - eval_time: 3m
         alertname: etcdInsufficientMembers
@@ -27,7 +25,7 @@ tests:
               severity: critical
             exp_annotations:
               description: 'etcd cluster "etcd": members are down (3).'
-              summary: 'etcd cluster members are down.'
+              summary: etcd cluster members are down.
       - eval_time: 7m
         alertname: etcdInsufficientMembers
       - eval_time: 11m
@@ -38,7 +36,7 @@ tests:
               severity: critical
             exp_annotations:
               description: 'etcd cluster "etcd": insufficient members (1).'
-              summary: 'etcd cluster has insufficient number of members.'
+              summary: etcd cluster has insufficient number of members.
       - eval_time: 15m
         alertname: etcdInsufficientMembers
         exp_alerts:
@@ -47,16 +45,15 @@ tests:
               severity: critical
             exp_annotations:
               description: 'etcd cluster "etcd": insufficient members (0).'
-              summary: 'etcd cluster has insufficient number of members.'
-
+              summary: etcd cluster has insufficient number of members.
   - interval: 1m
     input_series:
-      - series: 'up{job="etcd",instance="10.10.10.0"}'
-        values: '1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0'
-      - series: 'up{job="etcd",instance="10.10.10.1"}'
-        values: '1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0'
-      - series: 'up{job="etcd",instance="10.10.10.2"}'
-        values: '1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0'
+      - series: up{job="etcd",instance="10.10.10.0"}
+        values: 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0
+      - series: up{job="etcd",instance="10.10.10.1"}
+        values: 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0
+      - series: up{job="etcd",instance="10.10.10.2"}
+        values: 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
     alert_rule_test:
       - eval_time: 14m
         alertname: etcdMembersDown
@@ -66,16 +63,15 @@ tests:
               severity: critical
             exp_annotations:
               description: 'etcd cluster "etcd": members are down (3).'
-              summary: 'etcd cluster members are down.'
-
+              summary: etcd cluster members are down.
   - interval: 1m
     input_series:
-      - series: 'up{job="etcd",instance="10.10.10.0"}'
-        values: '1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0'
-      - series: 'up{job="etcd",instance="10.10.10.1"}'
-        values: '1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0'
-      - series: 'etcd_network_peer_sent_failures_total{To="member-1",job="etcd",endpoint="test"}'
-        values: '0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18'
+      - series: up{job="etcd",instance="10.10.10.0"}
+        values: 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0
+      - series: up{job="etcd",instance="10.10.10.1"}
+        values: 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0
+      - series: etcd_network_peer_sent_failures_total{To="member-1",job="etcd",endpoint="test"}
+        values: 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
     alert_rule_test:
       - eval_time: 13m
         alertname: etcdMembersDown
@@ -85,16 +81,15 @@ tests:
               severity: critical
             exp_annotations:
               description: 'etcd cluster "etcd": members are down (1).'
-              summary: 'etcd cluster members are down.'
-
+              summary: etcd cluster members are down.
   - interval: 1m
     input_series:
-      - series: 'etcd_server_leader_changes_seen_total{job="etcd",instance="10.10.10.0"}'
-        values: '0 0 2 0 0 1 0 0 0 0 0 0 0 0 0 0'
-      - series: 'etcd_server_leader_changes_seen_total{job="etcd",instance="10.10.10.1"}'
-        values: '0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0'
-      - series: 'etcd_server_leader_changes_seen_total{job="etcd",instance="10.10.10.2"}'
-        values: '0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0'
+      - series: etcd_server_leader_changes_seen_total{job="etcd",instance="10.10.10.0"}
+        values: 0 0 2 0 0 1 0 0 0 0 0 0 0 0 0 0
+      - series: etcd_server_leader_changes_seen_total{job="etcd",instance="10.10.10.1"}
+        values: 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0
+      - series: etcd_server_leader_changes_seen_total{job="etcd",instance="10.10.10.2"}
+        values: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
     alert_rule_test:
       - eval_time: 10m
         alertname: etcdHighNumberOfLeaderChanges
@@ -103,62 +98,69 @@ tests:
               job: etcd
               severity: warning
             exp_annotations:
-              description: 'etcd cluster "etcd": 4 leader changes within the last 15 minutes. Frequent elections may be a sign of insufficient resources, high network latency, or disruptions by other components and should be investigated.'
-              summary: 'etcd cluster has high number of leader changes.'
+              description: 'etcd cluster "etcd": 4 leader changes within the last
+                15 minutes. Frequent elections may be a sign of insufficient resources,
+                high network latency, or disruptions by other components and should
+                be investigated.'
+              summary: etcd cluster has high number of leader changes.
   - interval: 1m
     input_series:
-      - series: 'etcd_server_leader_changes_seen_total{job="etcd",instance="10.10.10.0"}'
-        values: '0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0'
-      - series: 'etcd_server_leader_changes_seen_total{job="etcd",instance="10.10.10.1"}'
-        values: '0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0'
-      - series: 'etcd_server_leader_changes_seen_total{job="etcd",instance="10.10.10.2"}'
-        values: '0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0'
+      - series: etcd_server_leader_changes_seen_total{job="etcd",instance="10.10.10.0"}
+        values: 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0
+      - series: etcd_server_leader_changes_seen_total{job="etcd",instance="10.10.10.1"}
+        values: 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0
+      - series: etcd_server_leader_changes_seen_total{job="etcd",instance="10.10.10.2"}
+        values: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
     alert_rule_test:
       - eval_time: 10m
         alertname: etcdHighNumberOfLeaderChanges
         exp_alerts:
-
   - interval: 1m
     input_series:
-      - series: 'etcd_mvcc_db_total_size_in_bytes{job="etcd",instance="10.10.10.0"}'
-        values: '0+8192x240'
-      - series: 'etcd_server_quota_backend_bytes{job="etcd",instance="10.10.10.0"}'
-        values: '524288+0x240'
-      - series: 'etcd_mvcc_db_total_size_in_bytes{job="etcd",instance="10.10.10.1"}'
-        values: '0+1024x240'
-      - series: 'etcd_server_quota_backend_bytes{job="etcd",instance="10.10.10.1"}'
-        values: '524288+0x240'
+      - series: etcd_mvcc_db_total_size_in_bytes{job="etcd",instance="10.10.10.0"}
+        values: 0+8192x240
+      - series: etcd_server_quota_backend_bytes{job="etcd",instance="10.10.10.0"}
+        values: 524288+0x240
+      - series: etcd_mvcc_db_total_size_in_bytes{job="etcd",instance="10.10.10.1"}
+        values: 0+1024x240
+      - series: etcd_server_quota_backend_bytes{job="etcd",instance="10.10.10.1"}
+        values: 524288+0x240
     alert_rule_test:
       - eval_time: 11m
         alertname: etcdExcessiveDatabaseGrowth
         exp_alerts:
           - exp_labels:
-              instance: '10.10.10.0'
+              instance: 10.10.10.0
               job: etcd
               severity: warning
             exp_annotations:
-              description: 'etcd cluster "etcd": Predicting running out of disk space in the next four hours, based on write observations within the past four hours on etcd instance 10.10.10.0, please check as it might be disruptive.'
-              summary: 'etcd cluster database growing very fast.'
-
+              description: 'etcd cluster "etcd": Predicting running out of disk space
+                in the next four hours, based on write observations within the past
+                four hours on etcd instance 10.10.10.0, please check as it might be
+                disruptive.'
+              summary: etcd cluster database growing very fast.
   - interval: 1m
     input_series:
-      - series: 'etcd_mvcc_db_total_size_in_use_in_bytes{job="etcd",instance="10.10.10.0"}'
-        values: '300000000+0x10'
-      - series: 'etcd_mvcc_db_total_size_in_bytes{job="etcd",instance="10.10.10.0"}'
-        values: '1000000000+0x10'
-      - series: 'etcd_mvcc_db_total_size_in_use_in_bytes{job="etcd",instance="10.10.10.1"}'
-        values: '700000000+0x10'
-      - series: 'etcd_mvcc_db_total_size_in_bytes{job="etcd",instance="10.10.10.1"}'
-        values: '1000000000+0x10'
+      - series: etcd_mvcc_db_total_size_in_use_in_bytes{job="etcd",instance="10.10.10.0"}
+        values: 300000000+0x10
+      - series: etcd_mvcc_db_total_size_in_bytes{job="etcd",instance="10.10.10.0"}
+        values: 1000000000+0x10
+      - series: etcd_mvcc_db_total_size_in_use_in_bytes{job="etcd",instance="10.10.10.1"}
+        values: 700000000+0x10
+      - series: etcd_mvcc_db_total_size_in_bytes{job="etcd",instance="10.10.10.1"}
+        values: 1000000000+0x10
     alert_rule_test:
       - eval_time: 11m
         alertname: etcdDatabaseHighFragmentationRatio
         exp_alerts:
           - exp_labels:
-              instance: '10.10.10.0'
+              instance: 10.10.10.0
               job: etcd
               severity: warning
             exp_annotations:
-              description: 'etcd cluster "etcd": database size in use on instance 10.10.10.0 is 30% of the actual allocated disk space, please run defragmentation (e.g. etcdctl defrag) to retrieve the unused fragmented disk space.'
+              description: 'etcd cluster "etcd": database size in use on instance
+                10.10.10.0 is 30% of the actual allocated disk space, please run defragmentation
+                (e.g. etcdctl defrag) to retrieve the unused fragmented disk space.'
               runbook_url: https://etcd.io/docs/v3.5/op-guide/maintenance/#defragmentation
-              summary: 'etcd database size in use is less than 50% of the actual allocated storage.'
+              summary: etcd database size in use is less than 50% of the actual allocated
+                storage.

hack/kubernetes-deploy/etcd.yml

@@ -1,3 +1,4 @@
+---
 apiVersion: v1
 kind: Service
 metadata:
@@ -10,9 +11,7 @@ spec:
       targetPort: 2379
   selector:
     app: etcd
-
 ---
-
 apiVersion: v1
 kind: Pod
 metadata:
@@ -48,9 +47,7 @@ spec:
           name: server
           protocol: TCP
   restartPolicy: Always
-
 ---
-
 apiVersion: v1
 kind: Service
 metadata:
@@ -69,9 +66,7 @@ spec:
       targetPort: 2380
   selector:
     etcd_node: etcd0
-
 ---
-
 apiVersion: v1
 kind: Pod
 metadata:
@@ -107,9 +102,7 @@ spec:
           name: server
           protocol: TCP
   restartPolicy: Always
-
 ---
-
 apiVersion: v1
 kind: Service
 metadata:
@@ -128,9 +121,7 @@ spec:
       targetPort: 2380
   selector:
     etcd_node: etcd1
-
 ---
-
 apiVersion: v1
 kind: Pod
 metadata:
@@ -166,9 +157,7 @@ spec:
           name: server
           protocol: TCP
   restartPolicy: Always
-
 ---
-
 apiVersion: v1
 kind: Service
 metadata:

hack/kubernetes-deploy/vulcand.yml

@@ -1,3 +1,4 @@
+---
 apiVersion: v1
 kind: Pod
 metadata: