Level 3 — Operating Jenkins · wrap-up
Cheat sheet & self-check
Every command from this section on one page.
As code
CASC_JENKINS_CONFIG=/var/jenkins_home/casc_configs | Where JCasC reads its YAML |
https://jenkins.example.com/manage/configuration-as-code/ | View, export and reload JCasC |
jenkins-plugin-cli --plugin-file plugins.txt | Install exactly the pinned plugin list (in the image build) |
jenkins-plugin-cli --plugin-file plugins.txt --available-updates --output txt | What could be updated |
Operate
https://jenkins.example.com/manage/pluginManager/ | Plugin versions and security warnings |
kubectl -n jenkins exec jenkins-0 -- du -sh /var/jenkins_home/jobs | Where the disk goes |
https://jenkins.example.com/manage/scriptApproval/ | Pending script approvals (review carefully) |
https://jenkins.example.com/safeRestart | Restart after running builds finish |
Jenkinsfile
pipeline { agent … stages { stage('x') { steps { … } } } post { … } } | Declarative skeleton |
options { timeout(time: 30, unit: 'MINUTES'); buildDiscarder(logRotator(numToKeepStr: '30')) } | Timeouts and build retention |
withCredentials([string(credentialsId: 'api-token', variable: 'TOKEN')]) { sh 'use-token' } | Credentials binding (masked in logs) |
@Library('platform-lib@v2') _ | Load a versioned shared library |
agent { kubernetes { yaml '''…pod spec…''' } } | Ephemeral pod agent (Kubernetes plugin) |
Operating
Built-in node executors: 0 | Never build on the controller |
Configuration as Code (JCasC) YAML | Controller config in Git |
plugins.txt + jenkins-plugin-cli | Pinned plugin set, baked into the image |
Back up JENKINS_HOME (jobs, credentials, config) | Restore path for the controller |
