CentOS 7.x

Install node@6.x from EPEL (nodejs version too low)

sudo yum install epel-release
sudo yum install nodejs

$ node -v
v6.16.0

How to remove

sudo yum remove nodejs

Install latest stable from nodesource

$ sudo yum install -y gcc-c++ make
$ curl -sL https://rpm.nodesource.com/setup_10.x | sudo -E bash -

$ node -v
v10.16.0

RedHat 7.x

installation node@6.x

curl --silent --location https://rpm.nodesource.com/setup_6.x | bash -

# rpm -qf /etc/yum.repos.d/nodesource-el.repo
nodesource-release-el7-1.noarch

yum -y install nodejs
yum -y install gcc-c++ make  # optional

installation node@8.x

curl -sL https://rpm.nodesource.com/setup_8.x | bash -
yum -y install nodejs
yum -y install gcc-c++ make  # optional

upgrade from node@6.x to node@8.x

[root@yy238 ~]# node -v
v6.10.3
[root@yy238 ~]# npm -v
3.10.10

[root@yy238 ~]# cat /etc/yum.repos.d/nodesource-el.repo
[nodesource]
name=Node.js Packages for Enterprise Linux 7 - $basearch
baseurl=https://rpm.nodesource.com/pub_6.x/el/7/$basearch
failovermethod=priority
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/NODESOURCE-GPG-SIGNING-KEY-EL

[nodesource-source]
name=Node.js for Enterprise Linux 7 - $basearch - Source
baseurl=https://rpm.nodesource.com/pub_6.x/el/7/SRPMS
failovermethod=priority
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/NODESOURCE-GPG-SIGNING-KEY-EL
gpgcheck=1

sudo yum remove nodesource-release
sudo yum clean all && sudo yum check-update
curl -sL https://rpm.nodesource.com/setup_8.x | bash -
sudo yum install -y nodejs

[root@yzb-centos-08 chenyang]# node -v
v8.2.1
[root@yzb-centos-08 chenyang]# npm -v
5.3.0

yum remove nodesource will make sure this bug not happen https://github.com/nodesource/distributions/issues/421#issuecomment-318560799 (nodesource-el.repo and nodesource-el7.repo)

FAQ

upgrade nodejs from v6 to v8 “Repository nodesource is listed more than once in the configuration”

when run this command:

# sudo yum install -y nodejs
Loaded plugins: fastestmirror
Repository nodesource is listed more than once in the configuration
Repository nodesource-source is listed more than once in the configuration

check the env

# ll /etc/yum.repos.d/nodesource*
-rw-r--r-- 1 root root 472 May 31 02:34 /etc/yum.repos.d/nodesource-el7.repo
-rw-r--r-- 1 root root 472 Apr 27  2016 /etc/yum.repos.d/nodesource-el.repo

nodesource-el.repo was installed with rpm (https://rpm.nodesource.com/pub_6.x/el/7/x86_64/nodesource-release-el7-1.noarch.rpm) at previous version (for example nodejs v6.x)

run this command to show package name.

# rpm -qf /etc/yum.repos.d/nodesource-el.repo
file /etc/yum.repos.d/nodesource-el.repo is not owned by any package
# rpm -qf /etc/yum.repos.d/nodesource-el7.repo
nodesource-release-el7-1.noarch

nodesource-el7.repo was created by rpm when you run curl -sL https://rpm.nodesource.com/setup_8.x | bash -, and rpm is https://rpm.nodesource.com/pub_8.x/el/7/x86_64/nodesource-release-el7-1.noarch.rpm

here is the solution

sudo yum remove nodesource-release

# ll /etc/yum.repos.d/nodesource*
-rw-r--r-- 1 root root 472 Apr 27  2016 /etc/yum.repos.d/nodesource-el.repo

rm -rf /etc/yum.repos.d/nodesource-el.repo

curl -sL https://rpm.nodesource.com/setup_8.x | bash -
yum clean all
yum install -y nodejs

remove with sudo yum remove nodesource-release, then /etc/yum.repos.d/nodesource-el.repo will be removed.