"pm2.root.service is not a snap cgroup" can't start extra browsers with puppeteer

Question

when I run too many puppeteer browsers via my nodejs app and i use pm2 to run it. After 80-85 browsers, it can't create new browsers and crash the app. When I check memory and disk I have enough space. My server is headless Ubuntu.

I think the main error is pm2-root.service is not a snap cgroup But I don't know what it means.

My browser starting code:

....
    
          const options = {
            executablePath: '/snap/bin/chromium',
            defaultViewport: null,
            headless: true,
            args: ['--start-fullscreen', "--disable-features=IsolateOrigins","--disable-setuid-sandbox", "--disable-site-isolation-trials", "--disable-features=BlockInsecurePrivateNetworkRequests",
              "--disable-web-security", '--ignore-certificate-errors', '--ignore-certificate-errors-spki-list ']
          } 
    
          options.args.push('--no-sandbox');
           await puppeteer.launch(options);
    ....

system info:

uname -a
Linux pot-n7 5.15.0-52-generic #58-Ubuntu SMP Thu Oct 13 08:03:55 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux

nano /etc/os-release
PRETTY_NAME="Ubuntu 22.04.1 LTS"
NAME="Ubuntu"
VERSION_ID="22.04"
VERSION="22.04.1 LTS (Jammy Jellyfish)"
VERSION_CODENAME=jammy
ID=ubuntu
ID_LIKE=debian
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
UBUNTU_CODENAME=jammy

apt list snapd -a
Listing... Done
snapd/jammy-updates 2.58+22.04 amd64 [upgradable from: 2.57.5+22.04ubuntu0.1]
snapd/jammy-security,now 2.57.5+22.04ubuntu0.1 amd64 [installed,upgradable to: 2.58+22.04]
snapd/jammy 2.55.3+22.04 amd64

 snap --version
snap    2.58.3
snapd   2.58.3
series  16
ubuntu  22.04
kernel  5.15.0-52-generic

snap list core
error: no matching snaps installed

return error :

EROROR Error: Failed to launch the browser process!
0|npm  | /system.slice/pm2-root.service is not a snap cgroup
0|npm  | TROUBLESHOOTING: https://github.com/puppeteer/puppeteer/blob/main/docs/troubleshooting.md
0|npm  |     at onClose (/var/www/twitch-client/node_modules/puppeteer/src/node/BrowserRunner.ts:327:9)
0|npm  |     at Interface.<anonymous> (/var/www/twitch-client/node_modules/puppeteer/src/node/BrowserRunner.ts:313:16)
0|npm  |     at Interface.emit (node:events:525:35)
0|npm  |     at Interface.close (node:readline:590:8)
0|npm  |     at Socket.onend (node:readline:280:10)
0|npm  |     at Socket.emit (node:events:525:35)
0|npm  |     at endReadableNT (node:internal/streams/readable:1358:12)
0|npm  |     at processTicksAndRejections (node:internal/process/task_queues:83:21)

after that error, my code crashes with this error:

0|npm  |     TypeError: Cannot read properties of undefined (reading 'pages')
0|npm  |     at /var/www/twitch-client/src/autoBrowser.service.ts:98:47
0|npm  |     at runMicrotasks (<anonymous>)
0|npm  |     at processTicksAndRejections (node:internal/process/task_queues:96:5)

Did anyone faced with this issue :( or has any idea?

score 1 · Answer 1 · answered Apr 20 '23 at 00:53

This is almost definitely this Snapcraft issue, because it's also cropped up before with other software distributed through snap on Ubuntu 22. If you build Chrome from source, install it through apt, or download a prebuilt binary directly, that should get you working.

Some other potential problems, though: you're running an old version of Puppeteer, and 80+ Chrome browsers on a single VPS is really a lot (even if you're not seeing resource problems — have you checked CPU? Sockets? How are you spawning the processes, is the parent process maybe maxing out?).

"pm2.root.service is not a snap cgroup" can't start extra browsers with puppeteer

1 Answers1