Fabric 7.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)

useradd -m -d /opt/apps/fabric  -s /bin/bash fabric
useradd -m -d /opt/apps/cassandra  -s /bin/bash cassandra
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 100000" >> /etc/security/limits.conf
echo "cassandra - nproc 50000" >> /etc/security/limits.conf
echo "fabric - nofile 100000" >> /etc/security/limits.conf
echo "fabric - nproc 50000" >> /etc/security/limits.conf
echo "kafka hard nofile 100000" >> /etc/security/limits.conf
echo "kafka soft nofile 100000" >> /etc/security/limits.conf
echo "kafka - nproc 50000" >> /etc/security/limits.conf
echo "kafka soft nofile 100000" >> /etc/security/limits.conf
echo "kafka - nproc 50000" >> /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

On RHEL/CentOs 8 server only - add the following packages:

dnf install -y compat-openssl10 readline* python2 glibc-locale-source glibc-langpack-en
ln -s /usr/lib64/libreadline.so /usr/lib64/libreadline.so.6

Note: Running one of the following commands would indicate your Linux flavour:

rpm -E %{rhel}
hostnamectl
cat /etc/os-release