Install PostgreSQL 12
Install and enable EPEL and PowerTools repositories if not already enabled.
Install PostGIS for PostgreSQL 12:
# dnf -y install postgis30_12Read more Install PostGIS 3.0 on CentOS 8 with PostgreSQL 12
centos
Install Xfce on CentOS 8 Minimal
Install the EPEL Repo
# dnf install epel-release -yInstall the Xfce group
# dnf groupinstall Xfce -yInstall PostgreSQL on CentOS 8
Download and install the latest repo RPM from https://yum.postgresql.org/
# dnf install -y https://download.postgresql.org/pub/repos/yum/reporpms/EL-8-x86_64/pgdg-redhat-repo-latest.noarch.rpmDisable the built-in PostgreSQL module:
# dnf -qy module disable postgresqlInstall PostgreSQL:
# dnf install -y postgresql12-serverOptionally initialize the database and enable automatic start:
# /usr/pgsql-12/bin/postgresql-12-setup initdb
# systemctl enable postgresql-12
# systemctl start postgresql-12Install tastyworks on CentOS 8
If you don’t have a tastyworks account, you may create one at tastyworks.
Download the latest RPM version of tastyworks from https://tastyworks.com/technology.
# wget https://download.tastyworks.com/desktop-1.x.x/1.8.0/tastyworks-1.8.0-1.x86_64.rpmInstall the downloaded RPM file.
# dnf localinstall tastyworks-1.8.0-1.x86_64.rpm
Install GNOME on CentOS 8 Minimal
Login as root
Install the workstation group, change the default target to graphical, and reboot.
# dnf groupinstall workstation
# systemctl set-default graphical.target
# reboot
Set Up MySQL/MariaDB Master-Slave Replication
MySQL Master-Slave replication allows for data to be automatically copied to multiple computers. Changes are made to the designated “master” node and replicated to one or more designated “slave” nodes for read-only applications.
This tutorial provides step-by-step instructions for setting up a MySQL/MariaDB master-slave database configuration. CentOS 8 and MariaDB 10.5 are used in this example.
Two servers are used in this tutorial, db01 (the master node) and db02 (the slave node). If you already have a database running on the master node, you must dump and restore a backup of the database into the slave node prior to enabling replication.
Install VirtualBox Additions on CentOS 8
Login as root and install packages required for building kernel modules and elfutils-libelf-devel as a prerequisite for the additions.
# dnf install gcc kernel-devel kernel-headers dkms make bzip2 perl elfutils-libelf-develFrom the VirtualBox window, insert the guest-tools CD image.
Devices -> “Insert Guest Additions CD Image”
Mount the virtual CD-ROM drive and install the VirtualBox Additions.
# mkdir /mnt/cdrom
# mount /dev/cdrom /mnt/cdrom
# cd /mnt/cdrom/
# sh ./VBoxLinuxAdditions.run --nox11
# rebootUpdate Hostname on CentOS 7/8
Display the Current Hostname
- Enter one of the following commands
$ hostnameor
$ hostnamectl
Install KDE Plasma on CentOS 8 Minimal Install
- Install and enable the EPEL repository
- Enable the PowerTools repository.
- Run the following commands in order as root:
# dnf group install "KDE Plasma Workspaces" # dnf group install kde-desktop # dnf group install kde-apps # systemctl disable gdm # systemctl enable sddm # systemctl set-default graphical.target - Reboot
Fix Samba Error – Failed to setup guest info
When starting samba you may receive this error:
smbd[11632]: ../source3/auth/auth_util.c:1382(make_new_ses...guest)
smbd[11632]: create_local_token failed: NT_STATUS_ACCESS_DENIED
smbd[11632]: ../source3/smbd/server.c:2000(main)
smbd[11632]: ERROR: failed to setup guest info.
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