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Fixing EACCES error when deploying Node 8 apps on Amazon Elastic Beanstalk

Recently, when working on deploying a nodejs app for a customer on Elastic Beanstalk and was encountering an issue during the deployment.  Here’s the error from the eb-activity.log.

gyp verb `which` failed code: 'ENOENT' }
gyp verb check python checking for Python executable "python" in the PATH
gyp verb `which` succeeded python /usr/bin/python
gyp verb check python version `/usr/bin/python -c "import platform; print(platform.python_version());"` returned: "2.7.12\n"
gyp verb get node dir no --target version specified, falling back to host node version: 8.8.1
gyp verb command install [ '8.8.1' ]
gyp verb install input version string "8.8.1"
gyp verb install installing version: 8.8.1
gyp verb install --ensure was passed, so won't reinstall if already installed
gyp verb install version is already installed, need to check "installVersion"
gyp verb got "installVersion" 9
gyp verb needs "installVersion" 9
gyp verb install version is good
gyp verb get node dir target node version installed: 8.8.1
gyp verb build dir attempting to create "build" dir: /tmp/deployment/application/node_modules/node-sass/build
gyp ERR! configure error
gyp ERR! stack Error: EACCES: permission denied, mkdir '/tmp/deployment/application/node_modules/node-sass/build'
gyp ERR! System Linux 4.9.58-18.55.amzn1.x86_64
gyp ERR! command "/opt/elasticbeanstalk/node-install/node-v8.8.1-linux-x64/bin/node" "/tmp/deployment/application/node_modules/node-gyp/bin/node-gyp.js" "rebuild" "--verbose" "--libsass_ext=" "--libsass_cflags=" "--libsass_ldflags=" "--libsass_library="
gyp ERR! cwd /tmp/deployment/application/node_modules/node-sass
gyp ERR! node -v v8.8.1
gyp ERR! node-gyp -v v3.6.2
gyp ERR! not ok
Build failed with error code: 1
npm WARN app@1.0.0 No license field.

npm ERR! errno 1
npm ERR! node-sass@3.13.1 postinstall: `node scripts/build.js`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the node-sass@3.13.1 postinstall script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR! /tmp/.npm/_logs/2017-11-17T21_10_59_638Z-debug.log
Running npm install: /opt/elasticbeanstalk/node-install/node-v8.8.1-linux-x64/bin/npm
Setting npm config jobs to 1
npm config jobs set to 1
Running npm with --production flag
Failed to run npm install. Snapshot logs for more details.
UTC 2017/11/17 21:10:59 cannot find application npm debug log at /tmp/deployment/application/npm-debug.log

The way that we fixed this issue is by using an .ebextensions file to overwrite the file.  Just create the following as an .ebextensions file and add it to the base of your project.  When the project is deployed on Elastic Beanstalk, it will overwrite the default file and run npm install with the –unsafe-perm flag.

mode: "000755"
owner: root
group: users
content: |
# This is a fix for the issue where when you install node-sass it gets permission problems
# This will fix

set -xe

#/opt/elasticbeanstalk/containerfiles/ --action npm-install
export PATH="/opt/elasticbeanstalk/node-install/node-v8.8.1-linux-x64/bin:$PATH";
cd /tmp/deployment/application && npm install --unsafe-perm --production


Hopefully this can help someone who runs into this problem in the future.

Posted on November 17th, by Peter in Tutorials.

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