Ondrej Valenta OndrejValenta

Install Zsh and Oh-my-zsh on CentOS 7

Based on this article

ALL INSTALLATIONS ASSUME YES WHEN PROMPTED, that's what -y does

This script can be copy paste to ssh as is. No hands installation. :-)

yum install zsh -y

This installation is based on Postgres Apt repository

Installation steps for Postgres are defined here
Installation steps for PostGIS are defined here

Add keys to Apt

sudo apt install curl ca-certificates gnupg
sudo curl https://www.postgresql.org/media/keys/ACCC4CF8.asc | sudo apt-key add -
sudo sh -c 'echo "deb http://apt.postgresql.org/pub/repos/apt/ $(lsb_release -cs)-pgdg main" &gt; /etc/apt/sources.list.d/pgdg.list'

This is our set of iptables rules on Ubuntu 18.04

It is based on idea of blocked INPUT ports and opened OUTPUT ports but it would be smarter to close OUTPUT ports as well and just let open what we really need. Output rules in the rules below are not really needed because all OUTPUT traffic is open but when we decide to close it everything should keep working because the rules are already there.

We use Hetzner.com servers that are all in one private network. You should check you ifconfig to see what your interfaces are.

Let's start with the basics

Disable everything, enable ssh. Notice that for some iptables records we use -i parameter with ens10 (private network) or eth0 (public network) interfaces. You can safely remove this parameters/commands if you have only one interface you want to control.

Based on this article

sudo apt-get update
sudo apt-get upgrade

sudo apt-get install redis-server
sudo systemctl enable redis-server.service

Based on this video and guidelines for Java, MongoDB, Elasticsearch and so on

(not yet completed, ended at Graylog running but not configured)

JAVA + other prerequisities

sudo apt-get update && sudo apt-get -y install zsh   -- SO YOU DON'T WANT TO DRIVE YOURSELF CRAZY WITH PLAIN CONSOLE
chsh -s /bin/zsh -- to set Zsh as a default console

sudo apt-get update
sudo apt install default-jre

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