operating RHEL/CentOS

Now that your RHEL/CentOS system is up and running, you can proceed with the run-mode.

update setup

make sure update message and downloads are enabled (default),

cd /etc/yum/
cp yum-cron.conf yum-cron.conf.dist
grep update yum-cron.conf | grep -v ^#

tune yum against specific packagestune yum against specific packages

pin versions

if you need to pin the version so it won’t get upgraded automaticly when doing yum upgrade, e.g. for mongodb,

cd /etc/
cp yum.conf yum.conf.dist
vi yum.conf

exclude=mongodb-org*

exclude package from conflicting repositories

e.g. make sure nodejs and mongodb are excluded from EPEL upgrades (those two package sets have their own repo),

cd /etc/yum.repos.d/
vi epel.repo

[epel]
...
exclude=libuv* nodejs* npm* mongodb-org*

updateupdate

make sure the system is up to date,

yum upgrade

cleanup unused packagescleanup unused packages

yum install -y yum-utils
package-cleanup --leaves

NodeJSNodeJS

Check that node modules are up-to-date,

npm list
npm outdated --depth=3
npm install
npm update
npm upgrade