CentOS 8¶
Set Up Automatic Updates for CentOS 8¶
DNF-automatic RPM package. The package provides a DNF component that starts automatically.
dnf install -y dnf-automatic
Configuring the dnf-automatic updates.
nano /etc/dnf/automatic.conf
Configuration this setting:
apply_updates = yes
Finally, you can now run dnf-automatic, execute the following command to schedule DNF automatic updates for your CentOS 8
systemctl enable --now dnf-automatic.timer
Stop and Disable Firewall on CentOS 8¶
systemctl stop firewalld
systemctl disable firewalld
Disable SELinux on CentOS 7¶
change SELINUX=enforcing to SELINUX=disabled
sudo nano /etc/selinux/config
reboot.
Check status
sestatus
Disable IPv6 on CentOS 8¶
Append below lines in /etc/sysctl.conf:
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
To make the settings affective, execute :
sysctl -p
Python ⅔ Installation on CentOS 8¶
Python 2
dnf install python2
Python 3
dnf install python3
Set Default Python Version
Python 2
alternatives --set python /usr/bin/python2
Python 3
alternatives --set python /usr/bin/python3
Remove the unversioned python
alternatives --auto python
Docker CE Installation on CentOS 8¶
dnf install https://download.docker.com/linux/centos/7/x86_64/stable/Packages/containerd.io-1.2.6-3.3.el7.x86_64.rpm
sudo dnf install docker-ce
systemctl start docker
systemctl enable docker
systemctl status docker
NodeJS and NPM Stable Installation¶
dnf install -y nodejs
npm install -g n
n stable
node -v
Htop Installation CentOS 8¶
dnf install -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm
dnf update
dnf install -y htop
Numbers of Kernels to Keep¶
Mininum is 2
dnf install -y dnf-utils
Configure yum to auto-remove old kernels¶
Edit /etc/yum.conf Set the limit to desired value
installonly_limit=2
Remove virbr0 and lxcbr0 Interfaces¶
chkconfig libvirtd off