Step by Step nodejs installation on Linux 7.9 with ODA and custom component

Published Jan. 2, 2025, 10:44 a.m. by cloudblog

Here is a step-by-step guide to install Node.js on Oracle Linux 7.9 for running external functionalities in an ODA (Oracle Digital Assistant) custom component:

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Step 1: Update System Packages

sudo yum update -y 

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Step 2: Enable Node.js Module

Oracle Linux 7 uses Software Collections (SCL) to provide newer versions of software.

1. Enable Developer Tools and Extra Packages:

sudo yum install -y oracle-epel-release-el7 sudo yum-config-manager --enable ol7_optional_latest 

2. Install NodeSource Repository:

For the latest LTS (Long-Term Support) version of Node.js (e.g., 18.x):

curl -fsSL https://rpm.nodesource.com/setup_18.x | sudo bash - 

Alternatively, for Node.js 16.x:

curl -fsSL https://rpm.nodesource.com/setup_16.x | sudo bash - 

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Step 3: Install Node.js

sudo yum install -y nodejs 

Verify the installation:

node -v npm -v 

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Step 4: Install Required Build Tools (Optional)

Some Node.js modules require compilation, so install gcc-c++ and make:

sudo yum install -y gcc-c++ make 

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Step 5: Install the Oracle Digital Assistant SDK

1. Create a project directory:

     mkdir oda-custom-component cd oda-custom-component 

2. Initialize the project:

     npm init -y 

3. Install the Oracle Bot SDK:

     npm install --save @oracle/bots-node-sdk 

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Step 6: Build Your Custom Component

1. Create the customComponent.js file:

      nano customComponent.js 

2. Add sample code:

'use strict'; module.exports = { metadata: () => ({ name: 'exampleComponent', properties: { input: { type: 'string', required: true } }, supportedActions: ['success', 'error'] }), invoke: (context, done) => { let input = context.properties().input; if (input) { context.reply(`Received input: ${input}`); context.transition('success'); } else { context.transition('error'); } done(); } }; 

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Step 7: Test the Component

node customComponent.js 

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Step 8: Deploy the Component

You can now deploy the component to Oracle Digital Assistant by packaging it and uploading it to the custom component server in Oracle Cloud.

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Useful Commands:

• Check Node.js Version:

      node -v 

• Check NPM Version:

      npm -v 

• List Installed Packages:

      npm list 

• Install Additional Libraries:

      npm install <library_name> 

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Error: Package: 2:nodejs-18.20.5-1nodesource.x86_64 (nodesource-nodejs) Requires: libstdc++.so.6(GLIBCXX_3.4.20)(64bit) Error: Package: 2:nodejs-18.20.5-1nodesource.x86_64 (nodesource-nodejs) Requires: libstdc++.so.6(GLIBCXX_3.4.21)(64bit) Error: Package: 2:nodejs-18.20.5-1nodesource.x86_64 (nodesource-nodejs) Requires: libc.so.6(GLIBC_2.28)(64bit) Error: Package: 2:nodejs-18.20.5-1nodesource.x86_64 (nodesource-nodejs) Requires: libstdc++.so.6(CXXABI_1.3.9)(64bit)

The error occurs because the Node.js 18.x version requires a newer version of glibc and libstdc++ than the ones available in Oracle Linux 7.9 by default.

Solution 1: Install Node.js 16.x (Recommended for Oracle Linux 7)

1. Clean any previous attempts:

     sudo yum clean all sudo rm -rf /var/cache/yum 

2. Install Node.js 16.x instead of 18.x, which has lower dependencies:

     curl -fsSL https://rpm.nodesource.com/setup_16.x | sudo bash - sudo yum install -y nodejs 

3. Verify:

      node -v npm -v 

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Solution 2: Upgrade glibc and libstdc++ (Riskier)

Note: Proceed only if Node.js 18.x is mandatory. Upgrading system libraries can lead to compatibility issues with other packages.

Step 1: Check Current Versions

ldd --version strings /usr/lib64/libstdc++.so.6 | grep GLIBCXX 

Step 2: Upgrade glibc

1. Download and extract the newer version:

      cd /usr/local/src sudo wget http://ftp.gnu.org/gnu/libc/glibc-2.28.tar.gz sudo tar -xvzf glibc-2.28.tar.gz cd glibc-2.28 

2. Build and install:

      mkdir /usr/glibc-2.28 sudo ./configure --prefix=/usr/glibc-2.28 sudo make -j$(nproc) sudo make install 

3. Configure dynamic linker to use the new glibc:

      sudo ln -sf /usr/glibc-2.28/lib/ld-2.28.so /lib64/ld-2.28.so sudo ldconfig 

Step 3: Upgrade gcc (if required)

sudo yum install -y centos-release-scl sudo yum install -y devtoolset-9-gcc devtoolset-9-gcc-c++ devtoolset-9-binutils 

Step 4: Verify Dependencies Again

ldd --version strings /usr/lib64/libstdc++.so.6 | grep GLIBCXX 

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Final Check

Retry installing Node.js:

sudo yum install -y nodejs

$ npm install --save @oracle/bots-node-sdk
npm WARN deprecated @hapi/bourne@1.3.2: This version has been deprecated and is no longer supported or maintained
npm WARN deprecated @hapi/topo@3.1.6: This version has been deprecated and is no longer supported or maintained
npm WARN deprecated @hapi/address@2.1.4: Moved to 'npm install @sideway/address'
npm WARN deprecated @hapi/hoek@8.5.1: This version has been deprecated and is no longer supported or maintained
npm WARN deprecated @hapi/joi@15.1.1: Switch to 'npm install joi'

added 53 packages, and audited 54 packages in 9s

11 packages are looking for funding
  run `npm fund` for details

found 0 vulnerabilities
npm notice
npm notice New major version of npm available! 8.19.4 -> 11.0.0
npm notice Changelog: https://github.com/npm/cli/releases/tag/v11.0.0
npm notice Run npm install -g npm@11.0.0 to update!
npm notice
 

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