NodeJS not installed successfully in AWS EC2 inside User-data

Question

I've tried to install NodeJS in EC2instance - linux as follow inside user-data:

```
#!/bin/bash                                                  
yum update -y
curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.34.0/install.sh | bash
export NVM_DIR="/home/ec2-user/.nvm"
[ -s "$NVM_DIR/nvm.sh" ] && . "$NVM_DIR/nvm.sh"  
yum install git -y
git config --global credential.helper '!aws codecommit credential-helper $@'
git config --global credential.UseHttpPath true
git clone https://git-xxxx
cd xxxx
node app.js

```

When instance is running and check my ec2 instance, there is no node js and nvm installed when I typed node -v

```
[ec2-user@ip-xxxx ~]$ nvm -v
-bash: nvm: command not found
[ec2-user@ip-xxxx ~]$ node -v
-bash: node: command not found
```

What I missed ? I wrote this script as I usually do in my instance and work.

Answer

The user-data is ran as `root` -user so the NVM is now installed under `root` only. So when you run the `curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.34.0/install.sh | bash` -script it gets installed under `/root/.nvm/`. Your code then assumes it's installed under `/home/ec2-user/.nvm` which is not true, so your nvm commands after that fail.

So you would need to either install the nvm and node system wide. Or just run commands as ec2-user in the script via "sudo -u ec2-user "
For example:

```
sudo -u ec2-user sh -c 'curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.34.0/install.sh | bash'
sudo -u ec2-user sh -c '. ~/.nvm/nvm.sh && nvm install --lts'
```

Other option would be to wrap all the commands you want to run as `ec2-user` into shell script that you download from S3 or that you create the file inside `user-data`.

Also I don't see you running `nvm install` that would install Node on the machine.

Answer

try this command npm -v

NodeJS not installed successfully in AWS EC2 inside User-data

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