The Jenkins build process is encountering errors while trying to generate lighthouse reports

Fri, 28 May 2021 09:27:18 GMT ChromeLauncher Waiting for browser.............................................................................................
Fri, 28 May 2021 09:27:19 GMT ChromeLauncher Waiting for browser...............................................................................................
Fri, 28 May 2021 09:27:19 GMT ChromeLauncher Waiting for browser.................................................................................................
Fri, 28 May 2021 09:27:20 GMT ChromeLauncher Waiting for browser...................................................................................................
Fri, 28 May 2021 09:27:20 GMT ChromeLauncher Waiting for browser.....................................................................................................
Fri, 28 May 2021 09:27:21 GMT ChromeLauncher Waiting for browser.......................................................................................................

Fri, 28 May 2021 09:27:21 GMT ChromeLauncher:error connect ECONNREFUSED 127.0.0.1:36157
Fri, 28 May 2021 09:27:21 GMT ChromeLauncher:error Logging contents of /tmp/lighthouse.mOZ6RIf/chrome-err.log
Fri, 28 May 2021 09:27:21 GMT ChromeLauncher:error Fontconfig warning: "/etc/fonts/fonts.conf", line 86: unknown element "blank"
Inconsistency detected by ld.so: ../elf/dl-tls.c: 488: _dl_allocate_tls_init: Assertion `listp->slotinfo[cnt].gen <= GL(dl_tls_generation)' failed!

Unable to connect to Chrome
370/0: Lighthouse analysis FAILED for https://website.com/en/....
rm: no such file or directory: report/lighthouse/website/en....report.json

/var/lib/jenkins/workspace/project/node_modules/lighthouse-batch/index.js:219
   const score = toScore(summary.detail.performance)

TypeError: Cannot read property 'performance' of undefined
   at checkBudgets (/var/lib/jenkins/workspace/project/node_modules/lighthouse-batch/index.js:219:42)
   at /var/lib/jenkins/workspace/project/node_modules/lighthouse-batch/index.js:67:20
   at Array.map (<anonymous>)
   at execute (/var/lib/jenkins/workspace/project/node_modules/lighthouse-batch/index.js:39:38)
   at Object.<anonymous> (/var/lib/jenkins/workspace/project/node_modules/lighthouse-batch/run.js:28:1)
   at Module._compile (internal/modules/cjs/loader.js:1068:30)
   at Object.Module._extensions..js (internal/modules/cjs/loader.js:1097:10)
   at Module.load (internal/modules/cjs/loader.js:933:32)
   at Function.Module._load (internal/modules/cjs/loader.js:774:14)
   at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:72:12)

npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! <a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="622e0b050a160a0d1711073d3007120d10161122534c524c5242">[email protected]</a> lighthouse: `lighthouse-batch -f sites.txt -p --config-path=config.js -h --performance 75 --score 70 --no-report –chrome-flags='–headless','--no-sandbox'`
npm ERR! Exit status 1

I am running this report for over 900 page URLs.

node.jsjenkinsnpmlighthouse

Answer №1

It appears that ChromeLauncher is experiencing difficulty connecting to Jenkins, according to the logs. It's recommended to ensure that Jenkins has permission to access this particular service.

This issue could arise if ChromeLauncher is not running in headless mode or if there are multiple instances of ChromeLauncher running with no available ports. You may want to consider including the following configurations in your ChromeLauncher launch settings:

chromeOptions = {
        chromeFlags: ["--disable-gpu", "--headless", "--enable-logging"] 
}

For more information on this, you can visit this link.

An alternate solution would be to run Lighthouse in a Docker environment to separate it from Jenkins. This method allows you to scan your project, generate HTML reports, and share them back with Jenkins.

To learn more about this approach, you can check out the details here.

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