What is Hadoop?

Hadoop is an open-source library written in Java that enables us to process in parallel on multiple machines with large data sets.

Hadoop stores and manages large data on multiple machines.

HADOOP MULTI-NODE INSTALLATION PROCESS

Note: I am creating multi-node in the easiest way by creating and using everything in root mode on default users like (master, slave1, slave2…etc). Please don’t create any Hadoop users like (Hadoop, hduser, …etc) to configure and share Hadoop installations. I am using root user in all machine to make the connection for multi-node.

Introduction

This article continues the series on LAN switching and Cisco Catalyst switches. This article we’ll talk about dynamic VLAN’s, and explain what VQP and VMPS are, as well as how they work and how to configure them.

Prior articles in the series:

• Switching: VLAN’s
• Switching: Trunks and Dynamic Trunking Protocol (DTP)

What are VQP and VMPS

We talked in a prior article about configuring ports to belong to a VLAN. This is the static approach to VLAN’s, where a port is always a member of a specific VLAN. You can also configure a port to dynamically determine what VLAN to belong to. Initially (and fundamentally) this process is tied to the MAC address of the end station on the port. Cisco is in the process of making this much more administrator-friendly (and useful!) by tying it into directory servers — more on that later.

The Argument list too long error is usually a lot of files when trying to delete the file with the rm -rf command.

Solving the problem is simple.

You can perform the deletion using the command below. First, enter the folder.

Step 1:

find -name "*" -print | xargs rm -rf

command. This command will delete all the data in your folder without asking you.

In general, the result of the error received;

We will upgrade POSTGRESQL 10 To 11 on CENTOS in this article. Before I begin the redesign procedure, I need to make the accompanying basic cautioning:

You should re-arrange your postgresql.conf and pg_hba.conf records. Since the files will be reset after the redesign.

Install PostgreSQL 11

Postgresql 11 we are installing the following script.

[root@postgres eng]# yum install https://download.postgresql.org/pub/repos/yum/11/redhat/rhel-7-x86_64/pgdg-centos11-11-2.noarch.rpm

[root@postgres eng]# yum install postgresql11

[root@postgres eng]# yum install postgresql11-server

initdb

We are performing the initdb task in the Postgresql 11 database.

You can check the Mikrotik Dude installation in our Mikrotik device.
If installed, the following dude package should appear in the command output.

[/php]
[admin@techsoftcenter-DUDE] >/system package print

Flags: X – disabled

NAME VERSION SCHEDULED

0 dude 6.44.3
1 routeros-arm 6.44.3
2 system 6.44.3
3 X ipv6 6.44.3
4 wireless 6.44.3
5 hotspot 6.44.3
6 dhcp 6.44.3
7 mpls 6.44.3
8 routing 6.44.3
9 ppp 6.44.3
10 security 6.44.3
11 advanced-tools 6.44.3 [/php]