puppeteer: Question: Broken example?

OS: GNU / Debian testing 64-bit
Node.js: v7.10.1

I have tried the PDF example and when I run it, Node rejected it for the following reasons:

(node:8043) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 1): Error: Failed to connect to chrome! (node:8043) DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

Any suggestions please?

Cheers.

About this issue

Original URL
State: closed
Created 7 years ago
Comments: 18 (8 by maintainers)

Most upvoted comments

@Garbee thanks for pointing out issue #290.

@aslushnikov’s suggestion fixed my problem. Indeed it is sandbox’s problem and you have to be explicit when launching.

By adding {args: ['--no-sandbox']} inside await puppeteer.launch() works as expected.

👍 to @aslushnikov for figuring out.

Cheers to both of you folks.

stefanos82 on Aug 17, 2017

Looks related to #290. So check that thread for discussion on that.

You can go ahead and run these two scripts to verify your OS has everything required for Chromium to run.

Debian check

#!/bin/bash

packages="gconf-service
libasound2
libatk1.0-0
libc6
libcairo2
libcups2
libdbus-1-3
libexpat1
libfontconfig1
libgcc1
libgconf-2-4
libgdk-pixbuf2.0-0
libglib2.0-0
libgtk-3-0
libnspr4
libpango-1.0-0
libpangocairo-1.0-0
libstdc++6
libx11-6
libx11-xcb1
libxcb1
libxcomposite1
libxcursor1
libxdamage1
libxext6
libxfixes3
libxi6
libxrandr2
libxrender1
libxss1
libxtst6
ca-certificates
fonts-liberation
libappindicator1
libnss3
lsb-release
xdg-utils
wget"

declare -a neededPackages

for packageName in $packages; do
  if ! dpkg-query -l "$packageName" > /dev/null 2>&1; then
    neededPackages[${#neededPackages[@]}]="$packageName"
  fi
done


neededCount=${#neededPackages[@]}

if [[ $neededCount -gt 0 ]]; then
  echo "-----------------------------------------------------"
  echo "Run the following to get all of the required packages"
  echo "-----------------------------------------------------"
  echo "sudo apt install \\"
  for i in "${neededPackages[@]}"; do
    output="$i"

     if [[ ${neededPackages[@]: -1 } != "$i" ]]; then
        output+=" \\"
     fi

    echo "$output"
  done
  echo "-----------------------------------------------------"
fi

exit 0

Namespace check

#!/bin/bash

VALUE=$(cat /boot/config-$(uname -r) | grep CONFIG_USER_NS)

if [[ -z "$VALUE" ]]
then
  echo 'You do not have namespacing in the kernel. You will need to enable the SUID sandbox or upgrade your kernel.'
  echo 'See https://chromium.googlesource.com/chromium/src/+/master/docs/linux_suid_sandbox_development.md'
  exit 1
fi

USER_NS_AVAILABLE="${VALUE: -1}"

if [[ "$USER_NS_AVAILABLE" == "y" ]]
then
  exit 0
else
  echo 'You do not have namespacing in the kernel. You will need to enable the SUID sandbox or upgrade your kernel.'
  echo 'See https://chromium.googlesource.com/chromium/src/+/master/docs/linux_suid_sandbox_development.md'
  exit 1
fi

If you get no output, then all the things required to run Chromium should be there. If you get an error, follow what the instructions provided in the output.

Garbee on Aug 17, 2017