[root@centos66a node-v5.3.0]# curl --silent --location https://rpm.nodesource.com/setup_5.x | bash -

Installing the NodeSource Node.js 5.x repo...

Inspecting system...

• rpm -q --whatprovides redhat-release || rpm -q --whatprovides centos-release || rpm -q --whatprovides cloudlinux-release || rpm -q --whatprovides sl-release

• uname -m

  Confirming "el6-i386" is supported...

• curl -sLf -o /dev/null 'https://rpm.nodesource.com/pub_5.x/el/6/i386/nodesource-release-el6-1.noarch.rpm'

  Your distribution, identified as "centos-release-6-7.el6.centos.12.3.i686", is not currently supported, please contact NodeSource at https://github.com/nodesource/distributions/issues if you think this is incorrect or would like your distribution to be considered for support

So CentOS 6.7 32-bit is not supported for Node 5.x ?