bcrypt invalid elf header when running node app
node.jsElfBcryptnode.js Problem Overview
I'm working on a nodejs project for school. I wasn't able to install bcrypt with npm so i installed bcrypt-nodejs and the project worked fine yesterday. But today, when I do a "node app" i have this error :
/.../node_modules/bcrypt/node_modules/bindings/bindings.js:79
throw e
^
Error: /.../node_modules/bcrypt/build/Release/bcrypt_lib.node: invalid ELF header
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
at Module.require (module.js:364:17)
at require (module.js:380:17)
at bindings (/.../node_modules/bcrypt/node_modules/bindings/bindings.js:74:15)
at Object.<anonymous> (/.../node_modules/bcrypt/bcrypt.js:1:97)
at Module._compile (module.js:456:26)
at Object.Module._extensions..js (module.js:474:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
at Module.require (module.js:364:17)
at require (module.js:380:17)
my package.json file looks like this:
{
"name": "Supinfarm",
"version": "0.0.0",
"env": {
"PYTHON": "/usr/bin/python2.6"
},
"dependencies": {
"express": "3.1.0",
"connect-flash": "*",
"jade": "*",
"stylus": "*",
"passport": "*",
"passport-local": "*",
"mongoose": "*",
"bcrypt": "*"
}
}
I'm on Linux ubuntu 10.04 LTS I've tried to find a solution on google without success... Can somebody help me?
node.js Solutions
Solution 1 - node.js
I've found that bcrypt compiled on OSX will not quite work on Linux. In other words, if you check in the bcrypt compiled on your local OSX workstation, and try to run the node app on your linux servers, you will see the error above.
Solution: npm install bcrypt
on Linux, check that in, solved.
Probably the best way to deal with this is exclude your node_modules in .gitignore... and npm install remotely.
Solution 2 - node.js
If you are running inside a docker container as I am, all you need is a .dockerignore with 'node_modules' specified in it.
Some libraries need to be compiled on the host machine and therefore your modules can be stale.
Solution 3 - node.js
My issue was with my docker-compose.yml file, I already had node_modules in my .dockerignore but I also needed to add the node_modules directory as a volume:
volumes:
- ./:/usr/src/app
- /usr/src/app/node_modules
Solution 4 - node.js
There is a simple way that allowed me to solve this problem:
1. Uninstall bcrypt
npm uninstall bcrypt
2.- Install bcrypt again
npm i bcrypt
The error occurs because when you install bcypt, npm installs the recommended version for your machine and operating system, but when you are on another machine, this doesn't work.
-------- UPDATE ----------------------------------------
It also seems to me that another solution which is to grant root permissions to bcrypt installation, it happens because bcryp uses its own user but it has no permissions, so:
1. You must grant root permission to your project folder. go outside of your project folder and then
sudo su
Then enter your root password to get root user permissions
2. Grant permission to your project folder
chmod -R 777 <project_folder>
3. Go to your project folder and install bcrypt
cd <project_folder>
AND
npm i bcrypt --unsafe-perm=true --allow-root --save
Ready, if everything was OK, your bcrypt module will install without problems.
Solution 5 - node.js
I was also facing the same issue with bcrypt v.1.0.3. Just updated to the latest version (3.0.1) and its working fine now
Run
npm install bcrypt@latest --save
Solution 6 - node.js
in my case I was using nodejs in windows, when I use docker (with linux) I got that error, add the .dockerignore file with the folder node_modules and with this I work correctly, the nodejs packages in windows load differently in linux, so it is better that you install them from scratch in linux.
Solution 7 - node.js
I came across the same problem. I deployed by code in AWS Lambda using windows. I got the same error. I fixed it using 'bcryptjs' npm library.
npm install bcryptjs
Solution 8 - node.js
First make sure you are not uploading the node modules and are running npm install on your linux machine itself as bcrypt installation can vary depending on the platform you use. You can look at other installation instructions for other platforms below.
https://github.com/kelektiv/node.bcrypt.js/wiki/Installation-Instructions
If you are having further problems it could be related to node-pre-gyp. A dependency of bcrypt.
For AWS Elastic Beanstalk When deploying to Elastic Beanstalk running Node 8.x, node-gyp doesn't have sufficient permissions to write to the tmp directory. bcrypt won't install and the application deployment will fail.
A workaround is to add a .npmrc file to the root of your project that will force node-gyp to run as root and allow the installation to complete. File contents for .npmrc:
# Force npm to run node-gyp also as root, preventing permission denied errors in AWS with npm@5 or @6
unsafe-perm=true
Another alternative (Perhaps the more right way) is to make .ebextensions file with code:
.ebextensions:00_change_npm_permissions.config:
"/opt/elasticbeanstalk/hooks/appdeploy/post/00_set_tmp_permissions.sh":
mode: "000755"
owner: root
group: root
content: |
#!/usr/bin/env bash
chown -R nodejs:nodejs /tmp/.npm
This will give you sufficient access to run node-gyp
Solution 9 - node.js
If you are in Docker I resolve the issue by logging in to the maching running my service and running npm uninstall bcrypt
and then npm install bcrypt
Solution 10 - node.js
For those deploying an app to AWS elastic beanstalk, and gonna install bcrypt on the server, include in a post deploy hook in .ebextensions/01_build.config
:
files:
"/opt/elasticbeanstalk/hooks/appdeploy/post/99_build_app.sh":
mode: "000755"
owner: root
group: root
content: |
#!/usr/bin/env bash
cd /var/app/current/
rm -rf node_modules/bcrypt
sudo /opt/elasticbeanstalk/node-install/node-v10.13.0-linux-x64/bin/npm install bcrypt@latest
Solution 11 - node.js
I know that this might be a bit of a hassle but it is a solution. What I did when I needed to implement Bcrypt, was I started a Cloud 9 instance. For those of you who don't know, Cloud9 is a basic AWS IDE that runs on an EC2 instance. From Cloud9 you are able to upload your code on the ide as a lambda function. So I wrote the function on Cloud9 and when I uploaded it, the code worked.
Solution 12 - node.js
change package to:
npm install bcryptjs
var bcrypt = require('bcryptjs');
The functions are the same.
Get more information here https://github.com/dcodeIO/bcrypt.js
Solution 13 - node.js
I usually use macOS with Docker, to add some packages I first go into the Docker server docker exec -it nameServer /bin/bash
and then add the package npm install bcrypt
for example. So I guarantee everything will go run on the production server