Karthik Prasad kprasad99

Install OpenJDK 8/11 in Ubuntu 18.04

Below are the steps to install openjdk 8/11 in ubuntu 18.04. The default jdk shipped in ubuntu 18.04 is JDK-10.

Add Java PPA Repository.

$ sudo add-apt-repository ppa:webupd8team/java

Below are the steps to install maven in ubuntu 18.04 from tar file instead of default maven version for apt repository.

$ wget http://mirrors.estointernet.in/apache/maven/maven-3/3.6.0/binaries/apache-maven-3.6.0-bin.tar.gz

Below are the steps to install docker in ubuntu 18.04

$ sudo apt update ; sudo apt upgrade

A step by step description of bringing up kubernetes cluster using VirtualBox 6.0 with ubuntu 18.04 server.

Create two VMs k8s-master and k8s-s1 as shown in below diagram.

To list Installed plugins

.Linux

code --list-extensions | xargs -L 1 echo code --install-extension

.Windows (PowerShell, e. g. using VSCode's integrated Terminal):

Download zookeeper distribution

wget http://apachemirror.wuchna.com/zookeeper/zookeeper-3.4.14/zookeeper-3.4.14.tar.gz

The Docker Compose binary cam be downloaded from the Compose repository release page on GitHub.

Install following dependency packages

$ sudo apt update && sudo apt install -y py-pip python-dev libffi-dev openssl-dev gcc libc-dev make

	# Sample ``local.conf`` for user-configurable variables in ``stack.sh``

	# NOTE: Copy this file to the root DevStack directory for it to work properly.

	# ``local.conf`` is a user-maintained settings file that is sourced from ``stackrc``.
	# This gives it the ability to override any variables set in ``stackrc``.
	# Also, most of the settings in ``stack.sh`` are written to only be set if no
	# value has already been set; this lets ``local.conf`` effectively override the
	# default values.

	apiVersion: kubeadm.k8s.io/v1beta2
	bootstrapTokens:
	- groups:
	- system:bootstrappers:kubeadm:default-node-token
	token: abcdef.0123456789abcdef
	ttl: 24h0m0s
	usages:
	- signing
	- authentication
	kind: InitConfiguration

	version: '3.7'

	services:
	zoo1:
	image: zookeeper:3.4.14
	restart: always
	hostname: zoo1
	volumes:
	- "/opt/docker-volumes/zoo1/data:/data"
	- "/opt/docker-volumes/zoo1/datalog:/datalog"