The document discusses Jenkins 2.0, highlighting its history, features, and advancements over Jenkins 1.0, including the introduction of pipelines and improved user experience. Key functionalities like scripted and declarative pipelines are elaborated with syntax examples, along with integrations and best practices. It also mentions the community resources and tools available for Jenkins users to enhance productivity and collaboration.

1. Jenkins 2.0
Make Jenkins Great Again!
Miyata Jumpei (@miyajan)
Mar 18, 2017
Productivity Engineering - Forkwell Meetup #4

2. ⾃⼰紹介
• 宮⽥ 淳平 (@miyajan)
• Cybozu
• ⽣産性向上チーム
• Jenkinsおじさん

3. Jenkins 2.0!

4. Background

5. History
• 2005 Hudson 1.0
• 2011 Forked to Jenkins
• 2016/04 Jenkins 2.0

6. Jenkins 1.0
• 10 years
• 100K active users
• 1000 plugins

7. • CI
•
• /UI
• Jenkins
• CI/CD
• UX

8. https://jenkins.io/blog/2016/04/26/jenkins-20-is-here/

9. Jenkins 2.0
• 10
•
• 1.0
• Deprecated: Jenkins

10. $ docker run -p 8080:8080 jenkins:2.32.3
# http://localhost:8080
Try Jenkins 2.0

11. Jenkins 2.0 Features

12. Suggested Plugins

13. •
•
• …
Jenkins 1.0

14. Suggested Plugins
•
•
• Pipeline, Git, Mail, Credential Binding, etc.
Jenkins 2.0

17. Pipeline

18. •
• Build Pipeline Plugin
• Delivery Pipeline Plugin
•
•
•
Jenkins 1.0

21. Pipeline Plugin
• DSL( )
• 1
•
• master
Jenkins 2.0

26. Pipeline DSL

27. GUI
•
•
• JobConfigHistory Plugin …
Jenkins 1.0

28. 300 input

29. Pipeline as Code
• DSL(Groovy)
•
•
•
Jenkins 2.0

30. •
•
• https://github.com/jenkinsci/pipeline-
plugin/blob/master/COMPATIBILITY.md
•
• https://github.com/jenkinsci/pipeline-
plugin/blob/master/DEVGUIDE.md
Jenkins 2.0

31. Scripted Pipeline &
Declarative Pipeline

32. Scripted Pipeline
• Pipeline
•
•
• try/catch…
Jenkins 2.0

33. node(‘has-docker’) {
try {
checkout scm
stage(‘Build’) {
sh ‘mvn clean install’
}
stage(‘Archive’) {
( )
}
if (currentBuild.result == 'SUCCESS') {
mail to:"me@example.com", subject:"SUCCESS", body: "passed."
}
}
catch (exc) {
mail to:"me@example.com", subject:"FAILURE", body: "failed."
}
finally {
deleteDir()
}
}

34. Declarative Pipeline
•
•
• Lint
Jenkins 2.0

35. pipeline {
agent label:’has-docker’, dockerfile: true
stages {
stage("Build") {
steps {
sh 'mvn clean install'
}
}
stage("Archive"){
( )
}
}
post {
always {
deleteDir()
}
success {
mail to:"me@example.com", subject:"SUCCESS", body: "passed."
}
failure {
mail to:"me@example.com", subject:"FAILURE", body: "failed."
}
}
}

36. Lint
•
• curl ssh lint
• https://github.com/jenkinsci/pipeline-model-
definition-plugin/wiki/Validating-(or-linting)-a-
Declarative-Jenkinsfile-from-the-command-line
• npm
• https://www.npmjs.com/package/jflint

38. Lint from CLI
• curl ssh lint
• https://github.com/jenkinsci/pipeline-model-
definition-plugin/wiki/Validating-(or-linting)-a-
Declarative-Jenkinsfile-from-the-command-line
• npm
• https://www.npmjs.com/package/jflint

39. • Declarative Pipeline
• “script” Scripted
Pipeline

40. Declarative Pipeline
Examples

41. Build in Container
// simple
agent {
docker “ubuntu:16.04”
}
// specify label & args
agent {
docker {
image “ubuntu:16.04”
label “docker-nodes”
args “-v /tmp:/tmp -p 8000:8000”
}
}

42. Credentials

43. Credentials
environment {
// type: secret text
// SECRET_TEXT is defined
SECRET_TEXT = credentials(‘SECRET_TEXT')
// type: username and password
// SECRET_AUTH_USR and SECRET_AUTH_PSW are defined
SECRET_AUTH = credentials('SECRET_AUTH')
}

44. Options
pipeline {
options {
// 7
buildDiscarder(logRotator(daysToKeepStr: '7'))
}
}

45. Triggers
pipeline {
triggers {
cron('* * * * *')
}
}

46. Parallel
stage("Commit") {
steps {
parallel(
unitTest: {
…
},
staticAnalysis: {
…
},
package: {
…
}
)
}
}

47. Conditions
stage("Production") {
when {
branch "master"
}
steps {
// deploy to production
}
}

48. Stash
stage("Archive") {
agent {
docker “java:8”
}
steps {
sh “gradle jar”
stash name: “jar”, includes: “build/libs/*.jar”
}
}
stage(“Deployment”) {
agent {
docker …
}
steps {
unstash “jar”
// jar
}
}

49. User Input
stage("Production") {
steps {
input “Ready to deploy?”
}
}

51. Syntax
• https://github.com/jenkinsci/pipeline-model-
definition-plugin/wiki/Syntax-Reference
• https://jenkins.io/doc/book/pipeline/syntax/

52. Shared Libraries

53. •
• …
• subtree or submodule…?
Jenkins 1.0

54. Shared Libraries
• GitHub
• Groovy
• https://jenkins.io/doc/book/pipeline/shared-
libraries/
Jenkins 2.0

55. Example: without Library
pipeline {
…
post {
failure {
// echo ‘failure!’ with red color
ansiColor('xterm') {
echo '033[0;31mFailure!033[0m'
}
}
}
…
}

56. vars/echoErr.groovy
#!/usr/bin/env groovy
def call(String text) {
ansiColor('xterm') {
echo “033[0;31m${text}033[0m"
}
}

58. (repository root)
+- vars
- +- echoErr.groovy

59. Example: with Library
@Library('miyata-shared-libraries') _
pipeline {
…
post {
failure {
echoErr ‘Failure!’
}
}
…
}

61. • DRY
•
• @Library('my-shared-library@1.0') _
•

62. GitHub

63. • push
• commit status

64. GitHub Plugin
•
•
commit status pending
commit status …
•
Jenkins 1.0

65. GitHub Organization Folder
• Organization
• Jenkinsfile Multibranch
Pipeline GitHub
Jenkins 2.0

66. Multibranch Pipeline
•
• Jenkinsfile
•
Jenkins 2.0

72. • 1

73. •
• Webhook
• BitBucket

74. Blue Ocean

75. Classic Jenkins UI
• UX
Jenkins 1.0

76. Blue Ocean
• UX
•
• RC
•
• Blue Ocean Plugin
Jenkins 2.0

79. Pipeline Editor

80. Pipeline Editor
• Blue Ocean
• Jenkinsfile GUI
Jenkins 2.0

86. stage
•
• Enterprise
• Groovy …
• JENKINS-33846

87. • LTS …
• LTS(stable)
•

88. GUI
•
•
• init.groovy.d ...
•
• https://github.com/jenkinsci/system-config-dsl-
plugin

90. Best Practices
• Declarative Pipeline
• GitHub Organization Folder
• Blue Ocean

91. References
• https://jenkins.io/doc/
• https://jenkins.io/node/
• https://www.cloudbees.com/juc/agenda

92. Cybozu Meetup
1
2 : https://cybozu.connpass.com/event/52668/