Merge branch 'master' into add_ibmcloud_provider

.github/workflows/docs.yml

@@ -0,0 +1,43 @@
+name: Release Docs
+
+on:
+  push:
+    tags:
+      - "v*"
+
+jobs:
+  release_docs:
+    name: Release Docs
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - uses: actions/setup-python@v2
+        with:
+          python-version: "3.10"
+          cache: "pip"
+          cache-dependency-path: "./docs/scripts/requirements.txt"
+
+      - uses: actions/setup-go@v2
+        with:
+          go-version: ^1.17
+
+      - run: |
+          pip install -r docs/scripts/requirements.txt
+
+      - name: setup
+        run: |
+          ./docs/scripts/copy_docs.sh
+          go run ./docs/scripts/docs.go
+
+      - name: Configure Git user
+        run: |
+          git config --local user.email "github-actions[bot]@users.noreply.github.com"
+          git config --local user.name "github-actions[bot]"
+
+      - name: build and push
+        run: |
+          mike deploy ${{ github.ref_name }} latest --push --update-aliases
+          mike set-default --push latest

.gitignore

@@ -54,3 +54,10 @@ profile.cov
 
 # Helm charts
 !/charts/external-dns/
+
+docs/LICENSE.md
+docs/code-of-conduct.md
+docs/CONTRIBUTING.md
+docs/index.md
+docs/redirect
+site

README.md

@@ -1,13 +1,16 @@
+---
+hide:
+  - toc
+  - navigation
+---
+
 <p align="center">
-	<img src="img/external-dns.png" width="40%" align="center" alt="ExternalDNS">
+	<img src="docs/img/external-dns.png" width="40%" align="center" alt="ExternalDNS">
 </p>
 
 # ExternalDNS
-[![Build Status](https://github.com/kubernetes-sigs/external-dns/workflows/Go/badge.svg)](https://github.com/kubernetes-sigs/external-dns/actions)
-[![Coverage Status](https://coveralls.io/repos/github/kubernetes-sigs/external-dns/badge.svg)](https://coveralls.io/github/kubernetes-sigs/external-dns)
-[![GitHub release](https://img.shields.io/github/release/kubernetes-sigs/external-dns.svg)](https://github.com/kubernetes-sigs/external-dns/releases)
-[![go-doc](https://godoc.org/github.com/kubernetes-sigs/external-dns?status.svg)](https://godoc.org/github.com/kubernetes-sigs/external-dns)
-[![Go Report Card](https://goreportcard.com/badge/github.com/kubernetes-sigs/external-dns)](https://goreportcard.com/report/github.com/kubernetes-sigs/external-dns)
+
+[![Build Status](https://github.com/kubernetes-sigs/external-dns/workflows/Go/badge.svg)](https://github.com/kubernetes-sigs/external-dns/actions) [![Coverage Status](https://coveralls.io/repos/github/kubernetes-sigs/external-dns/badge.svg)](https://coveralls.io/github/kubernetes-sigs/external-dns) [![GitHub release](https://img.shields.io/github/release/kubernetes-sigs/external-dns.svg)](https://github.com/kubernetes-sigs/external-dns/releases) [![go-doc](https://godoc.org/github.com/kubernetes-sigs/external-dns?status.svg)](https://godoc.org/github.com/kubernetes-sigs/external-dns) [![Go Report Card](https://goreportcard.com/badge/github.com/kubernetes-sigs/external-dns)](https://goreportcard.com/report/github.com/kubernetes-sigs/external-dns)
 
 ExternalDNS synchronizes exposed Kubernetes Services and Ingresses with DNS providers.
 
@@ -23,7 +26,7 @@ To see ExternalDNS in action, have a look at this [video](https://www.youtube.co
 
 ## The Latest Release
 
-ExternalDNS' allows you to keep selected zones (via `--domain-filter`) synchronized with Ingresses and Services of `type=LoadBalancer` and nodes in various cloud providers:
+ExternalDNS allows you to keep selected zones (via `--domain-filter`) synchronized with Ingresses and Services of `type=LoadBalancer` and nodes in various cloud providers:
 * [Google Cloud DNS](https://cloud.google.com/dns/docs/)
 * [AWS Route 53](https://aws.amazon.com/route53/)
 * [AWS Cloud Map](https://docs.aws.amazon.com/cloud-map/)

charts/external-dns/README.md

@@ -37,6 +37,7 @@ The following table lists the configurable parameters of the _ExternalDNS_ chart
 | `podLabels`                       | Labels to add to the pod.                                                                                                                                                                                                                                                                                             | `{}`                                   |
 | `podAnnotations`                  | Annotations to add to the pod.                                                                                                                                                                                                                                                                                        | `{}`                                   |
 | `podSecurityContext`              | Security context for the pod, this supports the full [PodSecurityContext](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.22/#podsecuritycontext-v1-core) API.                                                                                                                                       | _see values.yaml_                      |
+| `shareProcessNamespace`           | If `true` enable [Process Namespace Sharing](https://kubernetes.io/docs/tasks/configure-pod-container/share-process-namespace/)                                                                                                                        | `false`                      |
 | `securityContext`                 | Security context for the _external-dns_ container, this supports the full [SecurityContext](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.22/#securitycontext-v1-core) API.                                                                                                                        | _see values.yaml_                      |
 | `priorityClassName`               | Priority class name to use for the pod.                                                                                                                                                                                                                                                                               | `""`                                   |
 | `terminationGracePeriodSeconds`   | Termination grace period for the pod.                                                                                                                                                                                                                                                                                 | `null`                                 |

charts/external-dns/templates/deployment.yaml

@@ -30,6 +30,9 @@ spec:
         {{- toYaml . | nindent 8 }}
       {{- end }}
       serviceAccountName: {{ include "external-dns.serviceAccountName" . }}
+      {{- with .Values.shareProcessNamespace }}
+      shareProcessNamespace: {{ . }}
+      {{- end }}
       {{- with .Values.podSecurityContext }}
       securityContext:
         {{- toYaml . | nindent 8 }}

charts/external-dns/values.yaml

@@ -34,6 +34,8 @@ podLabels: {}
 # Annotations to add to the Pod
 podAnnotations: {}
 
+shareProcessNamespace: false
+
 podSecurityContext:
   fsGroup: 65534
 

docs/scripts/copy_docs.sh

@@ -0,0 +1,9 @@
+#!/bin/bash
+
+set -eo pipefail
+
+cp CONTRIBUTING.md code-of-conduct.md ./docs/
+
+cp LICENSE ./docs/LICENSE.md
+
+cp README.md ./docs/index.md

docs/scripts/docs.go

@@ -0,0 +1,47 @@
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package main
+
+import (
+	"log"
+	"os"
+	"strings"
+)
+
+func removeLinkPrefixInIndex() {
+	content, err := os.ReadFile("./docs/index.md")
+	if err != nil {
+		log.Fatalf("Could not read index.md file. Make sure to run copy_docs.sh script first. Original error: %s", err)
+	}
+
+	updatedContent := strings.ReplaceAll(string(content), "](./docs/", "](")
+	updatedContent = strings.ReplaceAll(updatedContent, "](docs/", "](")
+
+	f, err := os.OpenFile("./docs/index.md", os.O_RDWR, 0644)
+	if err != nil {
+		log.Fatalf("Could not open index.md file to update content. Original error: %s", err)
+	}
+	defer f.Close()
+
+	if _, err := f.WriteString(updatedContent); err != nil {
+		log.Fatalf("Failed writing links update to index.md. Original error: %s", err)
+	}
+}
+
+func main() {
+	removeLinkPrefixInIndex()
+}

docs/scripts/index.html.gotmpl

@@ -0,0 +1,3 @@
+<head>
+  <meta http-equiv="Refresh" content="0; url='/external-dns/{{.}}/'" />
+</head>

docs/scripts/requirements.txt

@@ -0,0 +1,5 @@
+mkdocs-git-revision-date-localized-plugin == 1.0.0
+mkdocs == 1.3.0
+mkdocs-material == 8.2.8
+mkdocs-literate-nav == 0.4.0
+mike == 1.1.2

mkdocs.yml

@@ -0,0 +1,86 @@
+site_name: external-dns
+site_author: external-dns maintainers
+
+repo_name: kubernetes-sigs/external-dns
+repo_url: https://github.com/kubernetes-sigs/external-dns/
+
+nav:
+  - index.md
+  - Tutorials: tutorials/
+  - Advanced Topics:
+      - Initial Design: initial-design.md
+      - TTL: ttl.md
+  - Contributing:
+      - Kubernetes Contributions: CONTRIBUTING.md
+      - Release: release.md
+      - contributing/*
+  - About:
+      - FAQ: faq.md
+      - Out of Incubator: 20190708-external-dns-incubator.md
+      - Code of Conduct: code-of-conduct.md
+      - License: LICENSE.md
+
+theme:
+  name: material
+  features:
+    - content.code.annotate
+    - navigation.top
+    - navigation.tracking
+    - navigation.indexes
+    - navigation.instant
+    - navigation.tabs
+    - navigation.tabs.sticky
+
+extra:
+  version:
+    provider: mike
+
+markdown_extensions:
+  - meta
+  - tables
+  - toc:
+      permalink: true
+  - abbr
+  - extra
+  - admonition
+  - smarty
+  - sane_lists
+  - nl2br
+  - attr_list
+  - def_list
+  - footnotes
+  - md_in_html
+  - pymdownx.arithmatex:
+      generic: true
+  - pymdownx.betterem:
+      smart_enable: all
+  - pymdownx.caret
+  - pymdownx.details
+  - pymdownx.emoji:
+      emoji_index: !!python/name:materialx.emoji.twemoji
+      emoji_generator: !!python/name:materialx.emoji.to_svg
+  - pymdownx.highlight:
+      use_pygments: true
+      anchor_linenums: true
+  - pymdownx.inlinehilite
+  - pymdownx.keys
+  - pymdownx.mark
+  - pymdownx.smartsymbols
+  - pymdownx.snippets
+  - pymdownx.superfences:
+      custom_fences:
+        - name: mermaid
+          class: mermaid
+          format: !!python/name:pymdownx.superfences.fence_code_format
+  - pymdownx.tabbed:
+      alternate_style: true
+  - pymdownx.tilde
+  - pymdownx.tasklist:
+      custom_checkbox: true
+
+plugins:
+  - search
+  - literate-nav
+  - git-revision-date-localized:
+      type: date
+      fallback_to_build_date: true

provider/bluecat/bluecat.go

@@ -15,7 +15,6 @@ limitations under the License.
 */
 
 // TODO: Ensure we have proper error handling/logging for API calls to Bluecat. getBluecatGatewayToken has a good example of this
-// TODO: Remove naked returns
 // TODO: Remove studdering
 // TODO: Make API calls more consistent (eg error handling on HTTP response codes)
 // TODO: zone-id-filter does not seem to work with our provider
@@ -431,7 +430,8 @@ func (p *BluecatProvider) deleteRecords(deleted bluecatChangeMap) {
 	}
 }
 
-func (p *BluecatProvider) recordSet(ep *endpoint.Endpoint, getObject bool) (recordSet bluecatRecordSet, err error) {
+func (p *BluecatProvider) recordSet(ep *endpoint.Endpoint, getObject bool) (bluecatRecordSet, error) {
+	recordSet := bluecatRecordSet{}
 	switch ep.RecordType {
 	case endpoint.RecordTypeA:
 		var res []api.BluecatHostRecord
@@ -443,9 +443,9 @@ func (p *BluecatProvider) recordSet(ep *endpoint.Endpoint, getObject bool) (reco
 		}
 		if getObject {
 			var record api.BluecatHostRecord
-			err = p.gatewayClient.GetHostRecord(ep.DNSName, &record)
+			err := p.gatewayClient.GetHostRecord(ep.DNSName, &record)
 			if err != nil {
-				return
+				return bluecatRecordSet{}, err
 			}
 			res = append(res, record)
 		}
@@ -463,9 +463,9 @@ func (p *BluecatProvider) recordSet(ep *endpoint.Endpoint, getObject bool) (reco
 		}
 		if getObject {
 			var record api.BluecatCNAMERecord
-			err = p.gatewayClient.GetCNAMERecord(ep.DNSName, &record)
+			err := p.gatewayClient.GetCNAMERecord(ep.DNSName, &record)
 			if err != nil {
-				return
+				return bluecatRecordSet{}, err
 			}
 			res = append(res, record)
 		}
@@ -483,9 +483,9 @@ func (p *BluecatProvider) recordSet(ep *endpoint.Endpoint, getObject bool) (reco
 		}
 		if getObject {
 			var record api.BluecatTXTRecord
-			err = p.gatewayClient.GetTXTRecord(ep.DNSName, &record)
+			err := p.gatewayClient.GetTXTRecord(ep.DNSName, &record)
 			if err != nil {
-				return
+				return bluecatRecordSet{}, err
 			}
 			res = append(res, record)
 		}
@@ -494,7 +494,7 @@ func (p *BluecatProvider) recordSet(ep *endpoint.Endpoint, getObject bool) (reco
 			res: &res,
 		}
 	}
-	return
+	return recordSet, nil
 }
 
 // extractOwnerFromTXTRecord takes a single text property string and returns the owner after parsing the owner string.

source/istio_gateway.go

@@ -171,6 +171,11 @@ func (sc *gatewaySource) Endpoints(ctx context.Context) ([]*endpoint.Endpoint, e
 			return nil, err
 		}
 
+		if len(gwEndpoints) == 0 {
+			log.Debugf("No endpoints could be generated from gateway %s/%s", gateway.Namespace, gateway.Name)
+			continue
+		}
+
 		log.Debugf("Endpoints generated from gateway: %s/%s: %v", gateway.Namespace, gateway.Name, gwEndpoints)
 		sc.setResourceLabel(gateway, gwEndpoints)
 		endpoints = append(endpoints, gwEndpoints...)