This tutorial is a sequel of of Matteo Lissandrini's "Installing HDFS and Hadoop 2.X on a Multi-node cluster with Ubuntu 14.0.
That guide can also be used to install Hadoop 1.x (with minor if none modification); in this work we will assume that you have followed that tutorial and have installed Hadoop 1.x and HDFS.
Even thought HBase 0.94.x can run against both Hadoop 1.x and 2.x versions (see HBase 0.94 book) we highly recommend to use Hadoop 1.x for HBase 0.x and Hadoop 2.x for HBase 1.x and 2.x.
We wish also to inform you that also this tutorial can be applied to HBase 1.x and 2.x (with minor if none modification).
The following steps will be needed only once. Download HBase 0.94.X stable, to do so navigate in the List of Mirrors select one and decide which version to download. For the sake of simplicity from now on we will assume tho have chosen version 0.94.27.
For example wget can be used:
# from eu wget https://www.eu.apache.org/dist/hbase/hbase-0.94.27/hbase-0.94.27.tar.gz # from us wget https://www.us.apache.org/dist/hbase/hbase-0.94.27/hbase-0.94.27.tar.gz
Then extract the tar to the final installation directory, fix also permission and create a version agnostic symlink.
In this tutorial we will use the standard /usr/local/ as installation directory but obviously you are free to chose the one you prefer.
# extract & copy sudo tar -zxf hbase-0.94.27.tar.gz -C /usr/local/ # fix permission sudo chown -R hduser:hadoop /usr/local/hbase-hbase-0.94.27/ # create symlink sudo ln -s /usr/local/hbase-0.94.27/ /usr/local/hbase
Ghost Spectre’s “Windows 7 Superlite” is a stripped-down, enthusiast-focused distribution of Windows 7 aimed at ultra-low-resource systems, legacy hardware, or users seeking a minimal OS footprint. Below is a concise, engaging rundown that covers what it is, why people use it, the tradeoffs, technical highlights, legal and security considerations, and a short take on its place in computing culture.
What it is
Why users try it
Technical highlights (typical changes)
Tradeoffs and downsides
Safety and trust considerations
Best use cases
When to avoid it
Cultural and practical perspective
Quick checklist before trying it
Concise verdict
This is the selling point. By disabling heavy services like Windows Search, Superfetch, and printing services, the RAM usage is drastically reduced. Users often report boot times that are twice as fast as a standard installation.
Here’s a polished, concise promotional/overview text for “Ghost Spectre Windows 7 Superlite.” If you want a different tone (technical, marketing, friendly) or a longer version, tell me which and I’ll adjust. Ghost Spectre Windows 7 Superlite
Ghost Spectre Windows 7 Superlite — Clean, Fast, Minimal Ghost Spectre Windows 7 Superlite is a highly optimized, lightweight build of Windows 7 designed for maximum speed and low system-resource usage. Stripped of nonessential components and background services, it brings new life to older PCs, netbooks, and virtual machines while preserving the familiar Windows 7 interface users love.
Key benefits
Ideal use cases
Important considerations
Get started
If you want a marketing blurb, technical readme, or installation guide tailored to a specific audience, say which and I’ll create it. Why users try it
To get the most out of this OS, follow these post-installation tweaks:
The ISO files are distributed via TeamOS, Archive.org, and anonymous Telegram channels. There is no guarantee that a third party hasn't injected a trojan or cryptominer into the ISO you download.
How to mitigate:
Ghost Spectre removes Windows Update entirely. You cannot patch security vulnerabilities. Furthermore, removing Windows Defender leaves you defenseless against malware. If you connect this OS to the internet, you are at extreme risk of exploits like EternalBlue (used by WannaCry ransomware).
Recommendation: Use this OS offline only.
Finally configure and initialize the other cluster nodes.
List the machines that will act as region server in conf/regionservers,
one address per line line.
If needed update /etc/hosts according to Hadoop tutorial hints.
Once done, propagate the setup throw the cluster:
#!/bin/bash
# Build configured HBase tar.
mkdir -p /tmp/distr/
tar -czf /tmp/distr/hbase.tgz /usr/local/hbase-0.94.27
# Distribute to each region node
while IFS='' read -r node_ip; do
scp /etc/hosts hduser@$node_ip:~/
scp ~/.profile ~/.vimrc hduser@$node_ip:~/
scp hbase.tgz hduser@$node_ip:~/
ssh -o StrictHostKeyChecking=no -tt hduser@$node_ip <<EOF
sudo mv $HOME/hosts /etc/
# Install & link & fix permission
sudo tar -zxf $HOME/hbase.tgz -C /
sudo ln -s /usr/local/hbase-0.94.27 /usr/local/hbase
sudo chown -R hduser:hadoop /usr/local/hbase*
# Create zookeeper directory (even if not needed)
sudo mkdir -p /usr/local/zookeeper
# Fix permission
sudo chown -R hduser:hadoop /usr/local/zookeeper
# Raise the limit for max opened files (DB srv)
sudo sysctl -w fs.file-max=100000
# Required due to -tt option
exit
EOF
done < /usr/local/hbase/conf/regionservers
That's the end of the journey: enjoy your new HBase cluster!
Start it running start-hbase.sh