{"id":456,"date":"2026-10-14T12:31:29","date_gmt":"2026-10-14T12:31:29","guid":{"rendered":"http:\/\/www.scmgalaxy.com\/tutorials\/2015\/11\/12\/jenkins-useful-websites-reference\/"},"modified":"2026-10-14T12:31:30","modified_gmt":"2026-10-14T12:31:30","slug":"jenkins-useful-websites-reference","status":"publish","type":"post","link":"https:\/\/www.devopsschool.com\/blog\/jenkins-useful-websites-reference\/","title":{"rendered":"Jenkins at Scale: Practical References and Admin Cheatsheet"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">This revised guide turns a short Jenkins link post into a practical reference for <strong>DevOps engineers and Jenkins administrators<\/strong> managing larger CI\/CD environments. You will find the original resources, a scalable operating workflow, and a copy-paste cheatsheet for common Jenkins UI, API, and CLI tasks.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Originally published on 2015-11-12; fully revised and updated.<\/em><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Original references and attribution<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The original post was primarily a reference list pointing to a three-part article about operating a large Jenkins installation. Those links are preserved below.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"http:\/\/www.technology-ebay.de\/the-teams\/mobile-de\/blog\/taming-the-hydra-part-1.html\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.devopsschool.com\/blog\/wp-content\/uploads\/2015\/11\/jenkins-useful-websites-ref.png\" alt=\"Jenkins useful websites reference\" width=\"600\" height=\"400\" \/><\/a><\/figure>\n\n\n\n<ul class=\"wp-block-list\"><li><a href=\"http:\/\/www.technology-ebay.de\/the-teams\/mobile-de\/blog\/taming-the-hydra-part-1.html\">How to take care of a large Jenkins installation and still keep your sanity \u2013 Part 1<\/a><\/li><li><a href=\"http:\/\/www.technology-ebay.de\/the-teams\/mobile-de\/blog\/taming-the-hydra-part-2.html\">How to take care of a large Jenkins installation and still keep your sanity \u2013 Part 2<\/a><\/li><li><a href=\"http:\/\/www.technology-ebay.de\/the-teams\/mobile-de\/blog\/taming-the-hydra-part-3.html\">How to take care of a large Jenkins installation and still keep your sanity \u2013 Part 3<\/a><\/li><li><a href=\"https:\/\/www.devopsschool.com\/blog\/jenkins-useful-websites-reference\/\">Original DevOpsSchool permalink<\/a><\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">The original page also contained a YouTube gallery embed with an API key restriction error. The source-provided troubleshooting link is: <a href=\"https:\/\/www.youtube.com\/watch?v=ZCfrNvu6nMc\">YouTube API key setup video<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Operating workflow for a large Jenkins installation<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">When Jenkins grows across many teams, stability depends on a repeatable flow: controlled pipeline changes, clear quality gates, and feedback loops from production back into pipeline maintenance.<\/p>\n\n\n\n<pre class=\"mermaid\">\nflowchart TD\n    A[Developer pushes code] --> B[Pipeline or multibranch job starts]\n    B --> C[Build and test]\n    C --> D{Quality gates pass}\n    D -- No --> E[Notify team and stop]\n    D -- Yes --> F[Package artifact]\n    F --> G[Deploy to staging]\n    G --> H[Approval or automated policy]\n    H --> I[Deploy to production]\n    I --> J[Collect logs and metrics]\n    J --> K[Improve pipeline and platform]\n    K --> B\n<\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">Jenkins admin cheatsheet: high-value pages and endpoints<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">These paths are frequently used while operating Jenkins. Access and behavior depend on your authentication, authorization, and CSRF settings.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Path or URL pattern<\/th><th>Best for<\/th><th>Notes<\/th><\/tr><\/thead><tbody><tr><td><code>\/manage<\/code><\/td><td>Global administration<\/td><td>System settings, credentials, nodes, plugins, security.<\/td><\/tr><tr><td><code>\/computer<\/code><\/td><td>Agent\/node health<\/td><td>See executors, labels, and online\/offline status.<\/td><\/tr><tr><td><code>\/job\/JOB_NAME\/<\/code><\/td><td>Job details<\/td><td>Build history, console output, parameters, artifacts.<\/td><\/tr><tr><td><code>\/job\/JOB_NAME\/configure<\/code><\/td><td>Job configuration<\/td><td>Requires permissions; prefer code-based job definitions when possible.<\/td><\/tr><tr><td><code>\/api\/json<\/code><\/td><td>Scriptable metadata<\/td><td>Useful for dashboards and automation scripts.<\/td><\/tr><tr><td><code>\/crumbIssuer\/api\/json<\/code><\/td><td>CSRF crumb retrieval<\/td><td>Typically needed before authenticated POST requests.<\/td><\/tr><tr><td><code>\/pluginManager<\/code><\/td><td>Plugin lifecycle<\/td><td>Track plugin versions and updates carefully.<\/td><\/tr><tr><td><code>\/script<\/code><\/td><td>Groovy Script Console<\/td><td>Powerful and risky; restrict to trusted admins only.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">API and CLI command examples<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Use these examples as templates. Replace variables with your own values and run them from a secured admin environment.<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-1\" data-shcb-language-name=\"JavaScript\" data-shcb-language-slug=\"javascript\"><span><code class=\"hljs language-javascript language-bash\"><span class=\"hljs-keyword\">export<\/span> JENKINS_URL=<span class=\"hljs-string\">\"https:\/\/jenkins.example.com\"<\/span>\n<span class=\"hljs-keyword\">export<\/span> JENKINS_USER=<span class=\"hljs-string\">\"admin-user\"<\/span>\n<span class=\"hljs-keyword\">export<\/span> JENKINS_API_TOKEN=<span class=\"hljs-string\">\"replace-with-api-token\"<\/span>\n<span class=\"hljs-keyword\">export<\/span> JOB_NAME=<span class=\"hljs-string\">\"my-pipeline\"<\/span><\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-1\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">JavaScript<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">javascript<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-2\" data-shcb-language-name=\"PHP\" data-shcb-language-slug=\"php\"><span><code class=\"hljs language-php language-bash\"><span class=\"hljs-comment\"># Read controller metadata<\/span>\ncurl -s -u <span class=\"hljs-string\">\"$JENKINS_USER:$JENKINS_API_TOKEN\"<\/span> <span class=\"hljs-string\">\"$JENKINS_URL\/api\/json\"<\/span><\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-2\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">PHP<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">php<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-3\" data-shcb-language-name=\"PHP\" data-shcb-language-slug=\"php\"><span><code class=\"hljs language-php language-bash\"><span class=\"hljs-comment\"># Get CSRF crumb (requires jq)<\/span>\nCRUMB=$(curl -s -u <span class=\"hljs-string\">\"$JENKINS_USER:$JENKINS_API_TOKEN\"<\/span> <span class=\"hljs-string\">\"$JENKINS_URL\/crumbIssuer\/api\/json\"<\/span> | jq -r <span class=\"hljs-string\">'.crumbRequestField + \":\" + .crumb'<\/span>)<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-3\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">PHP<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">php<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-4\" data-shcb-language-name=\"PHP\" data-shcb-language-slug=\"php\"><span><code class=\"hljs language-php language-bash\"><span class=\"hljs-comment\"># Trigger a parameterized build<\/span>\ncurl -X POST \\\n  -u <span class=\"hljs-string\">\"$JENKINS_USER:$JENKINS_API_TOKEN\"<\/span> \\\n  -H <span class=\"hljs-string\">\"$CRUMB\"<\/span> \\\n  <span class=\"hljs-string\">\"$JENKINS_URL\/job\/$JOB_NAME\/buildWithParameters?environment=staging&amp;release=2026.10.14\"<\/span><\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-4\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">PHP<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">php<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-5\" data-shcb-language-name=\"PHP\" data-shcb-language-slug=\"php\"><span><code class=\"hljs language-php language-bash\"><span class=\"hljs-comment\"># Jenkins CLI examples (if CLI is enabled)<\/span>\njava -jar jenkins-cli.jar -s <span class=\"hljs-string\">\"$JENKINS_URL\"<\/span> -auth <span class=\"hljs-string\">\"$JENKINS_USER:$JENKINS_API_TOKEN\"<\/span> <span class=\"hljs-keyword\">list<\/span>-jobs\njava -jar jenkins-cli.jar -s <span class=\"hljs-string\">\"$JENKINS_URL\"<\/span> -auth <span class=\"hljs-string\">\"$JENKINS_USER:$JENKINS_API_TOKEN\"<\/span> build <span class=\"hljs-string\">\"$JOB_NAME\"<\/span> -s -v<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-5\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">PHP<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">php<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<h2 class=\"wp-block-heading\">Choose the right control surface: UI vs API vs CLI vs Configuration as Code<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Option<\/th><th>Best for<\/th><th>Strengths<\/th><th>Trade-offs<\/th><\/tr><\/thead><tbody><tr><td>Jenkins UI<\/td><td>Ad hoc troubleshooting and one-off changes<\/td><td>Fast and visual<\/td><td>Hard to audit at scale; drift risk<\/td><\/tr><tr><td>REST API<\/td><td>Automation from scripts and external systems<\/td><td>Good for repeatability and integration<\/td><td>Need auth, crumbs, and error handling<\/td><\/tr><tr><td>Jenkins CLI<\/td><td>Batch administration and scripted operations<\/td><td>Convenient command interface<\/td><td>May be disabled or restricted in some setups<\/td><\/tr><tr><td>Jenkins Configuration as Code<\/td><td>Versioned controller configuration<\/td><td>Auditable, reviewable, repeatable<\/td><td>Requires disciplined Git workflows and rollout planning<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Common pitfalls and best practices<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li>Avoid unmanaged UI-only changes in production Jenkins controllers; prefer version-controlled changes where possible.<\/li><li>Pin and test plugin updates in a non-production environment before broad rollout.<\/li><li>Treat agent capacity as a first-class reliability concern; monitor queue time, executor usage, and offline nodes.<\/li><li>Limit access to high-risk endpoints such as <code>\/script<\/code> and use least-privilege roles.<\/li><li>Back up Jenkins home, credentials strategy, and job definitions, and routinely test restoration procedures.<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">For deeper background, start with the original three-part &#8220;taming the hydra&#8221; links above, then map those concepts to your current Jenkins version, plugin set, and security model.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>This revised guide upgrades a short 2015 Jenkins link post into an operations-ready reference for teams running Jenkins at scale. It preserves the original links and adds a workflow diagram, comparison table, and practical API\/CLI examples.<\/p>\n","protected":false},"author":1,"featured_media":3095,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_joinchat":[],"footnotes":""},"categories":[42],"tags":[145,1383,1214,1217,1384,941,940,938,634,888,939],"class_list":["post-456","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-jenkins","tag-jenkins","tag-jenkins-installation","tag-jenkins-installation-guide","tag-jenkins-installation-process","tag-jenkins-resources","tag-jenkins-useful-references","tag-link","tag-reference","tag-resources","tag-useful","tag-websites"],"_links":{"self":[{"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/posts\/456","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/comments?post=456"}],"version-history":[{"count":5,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/posts\/456\/revisions"}],"predecessor-version":[{"id":79331,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/posts\/456\/revisions\/79331"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/media\/3095"}],"wp:attachment":[{"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/media?parent=456"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/categories?post=456"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/tags?post=456"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}