Installing postgresql

dnf install postgresql

dnf install postgresql-server

Enable postgres service

systemctl enable postgresql.service

Initialize postgresql Files

postgresql-setup initdb

Setup postgresql

Set METHOD of address 127.0.0.1 and ::1 to trust at the pg_hba.conf file...

Installing postgresql

yum install postgresql

yum install postgresql-server

Enable postgres service

systemctl enable postgresql.service

Initialize postgresql Files

postgresql-setup initdb

Setup postgresql

Set address 127.0.0.1 and ::1 to trust at the pg_hba.conf file.

File /...

Install RabbitMQ on CentOS 7

sudo dnf install epel-release
sudo dnf update

Install Erlang

Add repository

sudo dnf install https://packages.erlang-solutions.com/erlang-solutions-2.0-1.noarch.rpm

Install erlang and dependencies

sudo dnf install erlang socat logrotate

Install RabbitMQ

A...

Installing Kerberos on Almalinux 8

This installation is going to require 2 servers one acts as kerberos KDC server and the other machine is going to be client. Lets assume the FQDN's are (here cw.com is the domain name, make a note of the domain name here):

• Kerberos KDC Server: kdc.cw.com
• K...

Install packages on both nodes

sudo dnf --enablerepo=ha -y install pacemaker pcs corosync

sudo dnf -y install https://downloads.mariadb.com/MaxScale/latest/centos/8/x86_64/maxscale-22.08.3-1.rhel.8.x86_64.rpm

Note about maxscale rpm package. If you get 404 then there is most likely new ver...

Install packages on both nodes

sudo yum install corosync pcs pacemaker maxscale

Set the password for the hacluster user [both nodes]

sudo passwd hacluster

Start the pcs daemon service [both nodes]

sudo systemctl start pcsd

Authenticate the cluster

sudo pcs cluster auth node01.domain....

Setup rsyslogd

dnf install rsyslog-gnutls rsyslog-mysql rsyslog-crypto

echo "\$ModLoad imudp" > /etc/rsyslog.d/server.conf
echo "\$UDPServerRun 514" >> /etc/rsyslog.d/server.conf
echo "\$ModLoad imtcp" >> /etc/rsyslog.d/server.conf
echo "\$InputTCPServerRun 514" >> /etc/rsyslog.d/server.conf
ech...