Fabric 8.xx Pre-Installation Steps

Introduction

This article describes mandatory steps to be taken for a system setup prior to Fabric/TDM installation; such steps are:

Hardware setup
Users creation
Environment variables setup
Required packages for Linux RHEL/CentOs 8
Required firewall ports

Follow the below instructions to prepare Linux environment for Fabric/TDM installation.

Hardware Requisites

for detailed hardware requirement, please see below:

OS Preparation

Create mandatory system users via the following commands:

On all servers

mkdir -p /opt/apps
chmod 755 /opt/apps

On each server, depending on the service you wish to install, run the appropriate useradd command. (on a single host setup, run all commands on the same server) For Fabric Sever

useradd -m -d /opt/apps/fabric  -s /bin/bash fabric

For Cassandra Instance (only in case Cassandrta is planned as system DB)

useradd -m -d /opt/apps/cassandra  -s /bin/bash cassandra

In Some cases, Kafka instance or cluster will be required.

useradd -m -d /opt/apps/kafka  -s /bin/bash kafka

Update the OS limits as follows:

echo "root soft    nproc     unlimited" >> /etc/security/limits.conf
echo "cassandra - nofile 1000000" >> /etc/security/limits.conf
echo "cassandra - nproc 500000" >> /etc/security/limits.conf
echo "fabric - nofile 1000000" >> /etc/security/limits.conf
echo "fabric - nproc 500000" >> /etc/security/limits.conf
echo "kafka hard nofile 1000000" >> /etc/security/limits.conf
echo "kafka soft nofile 1000000" >> /etc/security/limits.conf
echo "kafka - nproc 500000" >> /etc/security/limits.conf
echo "kafka soft nofile 1000000" >> /etc/security/limits.conf
echo "kafka - nproc 500000" >> /etc/security/limits.conf

Update /etc/sysctl.conf:

echo "## Added by K2view" >> /etc/sysctl.conf
echo "vm.max_map_count = 1048575" >> /etc/sysctl.conf
echo "fs.file-max = 1000000" >> /etc/sysctl.conf
echo "net.ipv4.tcp_keepalive_time = 60" >> /etc/sysctl.conf
echo "net.ipv4.tcp_keepalive_probes = 3" >> /etc/sysctl.conf
echo "net.ipv4.tcp_keepalive_intvl = 10" >> /etc/sysctl.conf
sysctl -p

If the system is planned to work over SSL/TLS and need to be hardend, OPENSSL is also required to be installed, in most Disterbutions its already installed by default, in case its not. please follow the spefic Linux diterbution manuals.