2017-06-18 11:47
We are going to install R software package on Linux and for that we are going to use SLES11 SP3 and R 3.3.3.
A fresh install of SLES will not have any development packages and hence, it is a… Read More
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# Hashprompt Blog
hashprompt.blogspot.com
Tags:
cluster
multinode
cloudera
opensource container
linux
container
highly reliable
canonicals opensource container
zookeeper
increased
Welcome to Hash Prompt. This blog isnt something that would be providing the ultimate tweak to all techie problems. But, it will surely provide a fair idea on the problems that I have faced time and again, mainly on various UNIX platforms. Hope they will help you get away with yours.
2017-06-17 17:03
In my previous post I have demonstrated the installation of multi-node Cloudera cluster. Here I will demonstrate how to kerberize a Cloudera cluster.
Introduction to Kerberos
Kerberos is… Read More
2017-05-01 05:01
Here we are going to setup a multi-node fully distributed Cloudera Hadoop cluster configured with "MySQL" as external database. We will also configure our cluster to authenticate using Kerbe… Read More
2017-04-24 00:41
Various approaches have been taken to meet the increased demand for highly reliable infrastructures, providing "five 9s" standard of availability. The concept of high-availability has long b… Read More
2017-01-05 04:40
"Ransomeware is more about manipulating vulnerabilities in human psychology than the adversary's technological sophistication."
--- James Scott, Sr. Fellow, Institute for Critical Infrastru… Read More
2016-05-23 22:46
LXD container on a single host is just like "chroot on steroids". LXD's main goal is to provide an experience that is similar to virtual machines and hypervisors excluding the hardware virtu… Read More
2016-05-07 04:03
Introduction
Certainly, "container" is the new buzz word among techies. Everyone is talking about Docker, LXC and LXD. The continous need to reduce costs, optimize performance, as well as ma… Read More
2016-04-21 21:55
Here, I will explain behind the scenes of job execution process in Hadoop MapReduce or MRv1 (MapReduce version 1), from the time user fires a job to the time when the job is executed on the… Read More
2015-01-22 16:06
In this tutorial I will
describe the steps for setting up a multi-node i.e. five nodes Hadoop cluster running
on Ubuntu. I have created this setup inside a VMware ESXi box. There are five
vi… Read More
2015-01-22 16:00
In my previous post we had configured a manual failover hadoop cluster. Now we being clear with the hadoop high availability features, we will slowly proceed towards configuring automatic fa… Read More
2015-01-14 11:48
After configuring an automatic failover HA with ZooKeeper and NFS, we will now configure an automatic failover HA with ZooKeeper and QJM.
We will use the Quorum Journal Manager to share edi… Read More
2015-01-11 19:59
Since manual failover mechanism was unable to automatically trigger a failover in cases of namenode failure, automatic failover mechanism made sure to provide a hot backup during a failover… Read More
2015-01-11 15:12
Federation
Concepts
“HDFS
Federation improves the existing HDFS architecture through a clear
separation of namespace and storage, enabling generic block storage
layer. It enables sup… Read More
2015-01-11 15:08
In
my last post we had configured Hadoop Federation Cluster in a fully
distributed mode. Next we will go for a fully distributed manual failover
hadoop HA cluster in this post. I will skip t… Read More
2015-01-11 14:10
This post will assist you in installing Oracle Java 8 in RHEL 5, CentOS 5 and Ubuntu 14.04.
Java Archive Download
Download the latest Java SE Development Kit 8 from it's official downlo… Read More
2014-06-06 03:23
This tutorial
demonstrates how to setup an Apache Hadoop 1.2.1 Cluster using Oracle
Solaris 11.1 Virtualization Technology or Zones.
I am running this setup
inside Oracle VM VirtualBox 4.3… Read More
2014-06-05 19:57
In
this tutorial I will demonstrate how to install and run Single-Node
Hadoop Cluster in Ubuntu 14.04.
JAVA
INSTALLATION
As a
requirement java needs to be installed.
user@hadoop-lab:~$… Read More
2014-05-28 14:22
A
repository is a location where the clients publish and retrieve
packages. There are two ways to obtain copy of Oracle Solaris 11.1
IPS (Image Packaging System) repository image, one method… Read More
2013-04-11 11:05
There are several articles around the
web to improve the performance of Ubuntu Linux. I have jotted down
some common tweaks that I too have tried on my system and due to
which I have found q… Read More
2013-04-01 07:52
Linux kernel 3.7.5 has recently released on January 28, 2013 with lots of bugfixes and improvements.
The changelog contains all the improvements and bugfixes made in the kernel… Read More
2013-04-01 07:51
Linux
kernel 3.7.6 has recently released on February 04, 2013 with lots of
bugfixes and improvements.
The changelog contains
all the improvements and bugfixes made in the kern… Read More
2013-02-15 03:49
Linux kernel 3.7.4 has recently released on January 21, 2013 with lots of bugfixes and improvements.
The changelog contains all the improvements and bugfixes made in the kernel… Read More
2013-02-14 03:06
Sar and vmstat utilities have been used
to calculate the precise values of used/unused memory. Though there's
a difference if we do so in UNIX based systems like solaris. Usually
the linux o… Read More
2013-02-13 06:42
Linux kernel 3.7.3 has recently released on January 17, 2013 with lots of bugfixes and improvements.
The changelog contains all the improvements and bugfixes made in the kernel… Read More
2013-02-08 04:08
Shared Folders is very helpful when we need to share large amount of data to a guest machine. To use this feature in vmware we need to have VMware-Tools configured in the guest machine.
Rece… Read More
2013-02-07 08:31
Linux kernel 3.7.2 has recently released on January 11, 2013 with lots of bugfixes and improvements.
The changelog contains all the improvements and bugfixes made in the kernel… Read More
2006-06-07 11:16
Linux
kernel 3.8.6 has recently released on April 05, 2013 with lots of
bugfixes and improvements.
The changelog contains
all the improvements and bugfixes made in the kernel… Read More
2006-06-07 11:16
The
operating system is said to be stable when both the software and
hardware of a machine or a system go parallel hand in hand. Your
favorite operating system or the best hardware that you… Read More
2006-06-07 11:16
Linux
kernel 3.8.5 has recently released on March 28, 2013 with lots of
bugfixes and improvements.
The changelog contains
all the improvements and bugfixes made in the kernel… Read More
2006-06-07 11:16
Linux
kernel 3.8.4 has recently released on March 20, 2013 with lots of
bugfixes and improvements.
The changelog contains
all the improvements and bugfixes made in the kernel… Read More
2006-06-07 11:16
This is a quickstart guide to install Globus
Toolkit 6.0 using yum on CentOS-6.6.
The steps mentioned in “GT
6 Quickstart Guide” which is the official
documentation of Globus Too… Read More
2006-06-07 11:16
After configuring an automatic failover HA with ZooKeeper and NFS, we will now configure an automatic failover HA with ZooKeeper and QJM.
We will use the Quorum Journal Manager to share edi… Read More
2006-06-07 11:16
In my previous post we had configured a manual failover hadoop cluster. Now we being clear with the hadoop high availability features, we will slowly proceed towards configuring automatic fa… Read More
2006-06-07 11:16
Since manual failover mechanism was unable to automatically trigger a failover in cases of namenode failure, automatic failover mechanism made sure to provide a hot backup during a failover… Read More
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