Tech Arkit: 2019

Ansible Galaxy | Ansible Tutorial Class 12| Tech Arkit

VNCServer Installation

VNCServer Installation & Configuration RHEL 8 | Tech Arkit

WordPress Installation | CMS | Content Management System | RHEL 8 | Tech...

WordPress is a content management system based on PHP and MySQL that is usually used with the MySQL or MariaDB database servers but can also use the SQLite database engine. Features include a plugin architecture and a template system, referred to inside WordPress as Themes.

Tomcat 9 Multiple Instances in Single Linux Server | RHEL 8 | CentOS 8 |...

Tom cat 9 Port Number Change in Linux | RHEL 8 | Tech Arkit

Tomcat 9 Installation CentOS 8 | Tech Arkit | Java Based Applications

SNMP Explained | Installation and configuration | Tech Arkit

Compress Large Files Faster | pigz | Parallel gzip compression | Tech Arkit

Pigz compresses using threads to make use of multiple processors and cores. The input is broken up into 128 KB chunks with each compressed in parallel. The individual check value for each chunk is also calculated in parallel. The compressed data is written in order to the output, and a combined check value is calculated from the individual check values.

The compressed data format generated is in the gzip, zlib, or single-entry zip format using the deflate compression method. The compression produces partial raw deflate streams which are concatenated by a single write thread and wrapped with the appropriate header and trailer, where the trailer contains the combined check value.

Example: tar -cf - DirectoryPath | pigz -9 -p 32 > TarFile.tar.gz

tar -I "pigz --best -r" -cf TarFile.tar.gz DirectoryPath

pigz -9 -p 4 -kr DirectoryPath

Explain: -9 Faster Compression -p = Processors you want use -k = Keep original files -r = Recursive

De-compress Faster: tar -I pigz -xf Archive.tar.gz -C /opt/

Install using TAR file

wget https://zlib.net/pigz/pigz-2.4.tar.gz

tar -xzvf pigz-2.4.tar.gz

cd pigz-2.4

make

make install

cp pigz unpigz /usr/bin/

Ansible Vault

Ansible Automation Playlist:

https://www.youtube.com/playlist?list=PL8cE5Nxf6M6YUaKyuon-AWRDNr31ANuo2

RHCSA - Red Hat Certified System Administrator PlayList:

https://www.youtube.com/playlist?list=PL8cE5Nxf6M6ZHEt4-CgdvbMyJ3hRAoth3

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Ansible Course

Automation with Ansible Course

https://youtu.be/-b1ByalW4X8

Ansible Lab Setup

https://youtu.be/p8xkv1m-boE

Ansible Inventory configuration

https://youtu.be/G7_orKIWAeA

Ansible Ad-Hoc Commands with examples

https://youtu.be/Kr-62ON416c

Writing your first Ansible playbook guide

https://youtu.be/2nRfP69sGsk

How to variables in Ansible playbook

https://youtu.be/nOOe-_rNhP8

Conditionals and Loops of Ansible playbooks

https://youtu.be/JYPn5l3ChX0

Ansible playbook challenge

https://youtu.be/SO-3nqAf3sY

Deploy LAMP Stack Using Ansible Playbook

https://youtu.be/cyylA0Yfn2o

Tags Ansible

https://youtu.be/LPdRHd4ID7c

Ansible Roles

https://youtu.be/MGklkuq0-Gs

Ansible Vault

https://youtu.be/RbDlfDJhQlI

Ansible Roles | Ansible Tutorial | Class #10 | Tech Arkit

Ansible Tags Example | Class #9 | Tech Arkit

Deploy LAMP Stack Using Ansible Playbook | Real time example | Class #8 ...

Ansible Playbook Challenge #1 | Tech Arkit

Ansible conditional variables and loops | Class #7 | Tech Arkit

How to Write Ansible playbook | Class #5 | Tech Arkit

Ansible Ad Hoc Commands | Class #4 | Tech Arkit

Ansible Inventory Configuration | Manual Inventory | Class #3 | Tech Arkit

Ansible Lab Setup | Installation | Class #2 | Tech Arkit

Ansible Automation Course D0407 | Class 1 | Tech Arkit

Introduction to Linux for Absolute Beginners |TechArkit

Youtube PlayLists

RHEL8: https://www.youtube.com/watch?v=3OWAS_ZKCgQ&list=PL8cE5Nxf6M6Ya9AUJDNwAplpTuN9mzQSn

Linux Tutorial: https://www.youtube.com/watch?v=Nl_iAPZ355U&list=PL8cE5Nxf6M6Zt5LdQt_LaCEN8Kq9EX-EQ

RHCSA: https://www.youtube.com/watch?v=BskRmjvWG5Y&list=PL8cE5Nxf6M6Y0lBYoJiIbGI-XbQueICqK

RHCE: https://www.youtube.com/watch?v=Zfrrgz8pYmA&list=PL8cE5Nxf6M6Z0wbx-_yMV54HNsFIJfyAW

Shell Scripting: https://www.youtube.com/watch?v=7GNUzvjS_mE&list=PL8cE5Nxf6M6b8qW7CSMsdKbEsPdG9pWfu

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phpMyAdmin Easy to Manage Databases from web interface RHEL 8 | Tech Arkit

RHEL 8 How to resize partition (Extend) | Tech Arkit

How to create new partitions in RHEL 8 | Tech Arkit

How, to, create, standard, partition, RHEL 8,

mount partition in linux

Partitioning also allows you to divide your hard drive into isolated sections, where each section behaves as its own hard drive. Partitioning is particularly useful if you run multiple operating systems.

Cluster Explained | How High Availability works | Tech Arkit

Nginx Web server installation RHEL 8 | Tech Arkit

Essential Linux commands for absolute beginners | Tech Arkit

00:49 cat command - View content of file

01:34 pwd command - present working directory

02:44 ls command - list files and directories

04:15 mkdir command - create empty directory

05:05 rmdir command - delete empty directory

05:58 touch command - Create flat files

06:51 cd command - Change directory

08:28 rm command - Delete files and directories

09:51 locate - Search files and directories from mlocate database

11:20 sudo - Execute super user commands

13:26 uname command - Check os type and kernel version

14:39 cp - copy files and directories

15:46 ping

16:51 yum - Install and remove packages

18:28 grep - Filter particular text

19:33 ps - list running processes

20:42 kill - Kill any process

20:03 mv - Move and rename files and directories

23:28 du - Check file and directory size

24:28 df - Partition usage report

mRemoteNg | Perfect SSH Tool for Linux Administrators | Tech Arkit

Multipath configuration in Linux | Disk Multipath | Tech Arkit

RAID Configuration Dell Physical Server | Tech Arkit

RAID - Configuration on Dell physical server.

Basic Linux Interview Questions and Answers | Tech Arkit

Linux User Login issues Troubleshooting | Tech Arkit

Introduction to AWK Programming | Tech Arkit

Level 2 - Linux Interview Questions and Answers | Tech Arkit

Youtube PlayLists

Interview questions and Answers: http://bit.ly/2MumSsn

RHCE: https://goo.gl/LGTmDK

Shell-Scripting: https://goo.gl/a1Hu3s

Linux-Commands: https://goo.gl/QDoL7h

RHCSA Certification: https://goo.gl/X2Ksqn

Putty Software Tricks: https://goo.gl/MB1Do2

Linux OS: https://goo.gl/62p8s9

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1. Explain the entries of /etc/fstab file?

2. What is sticky bit, how it will be useful explain with example?

Sticky bit : Sticky bit was used on executables in linux so that they would remain in the memory more time after the initial execution, hoping they would be needed in the near future. But mainly it is on folders, to imply that a file or folder created inside a stickybit enabled folder could only be deleted by the owner. A very good implementation of sticky bit is /tmp , where every user has write permission but only users who own a file can delete them.

3. How to provide access to single file to multiple users and groups with customized permissions?

4. What is SGID and SUID explain?

SUID : If setuid bit is set, when the file is executed by a user, the process will have the same rights as the owner of the file being executed.

SGID : Same as above, but inherits group privileges of the file on execution, not user privileges. Similar way when you create a file within the directory, it will inherit the group ownership of the directories.

5. / mount point usage is 99% however did not find any large files to delete, how did you clear up the / usage and bring back to normal usage?

6. how to scan for New LUN without server reboot?

7. What is zombie process, how zombie processes will impact system performance?

8. How to create single file system size more tham 3TB in size?

9. Whas is umask and how umask will help?

10. Explain crontab fileds with examples?

Upgrade to RHEL 8 Course Introduction | Tech Arkit

Youtube PlayLists

RHCE: https://goo.gl/LGTmDK

Shell-Scripting: https://goo.gl/a1Hu3s

Linux-Commands: https://goo.gl/QDoL7h

RHCSA Certification: https://goo.gl/X2Ksqn

Putty Software Tricks: https://goo.gl/MB1Do2

Linux OS: https://goo.gl/62p8s9

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Server Refused our key

Convert Partition Style MBR to GPT No Data Loss | Tech Arkit

How To Mount AWS S3 bucket in Linux | S3FS

AWS Snowball | Tech Arkit

The 'rm -r' command was the correct one to run to remove your files. This operation can take some time, but the 'ls' command will show you what the state will be when the deletion of those files finishes. Try the status command again and then again in an hour and you should see the used space decreasing.

Snowball will take lot of time to decrease its space when your doing large delete operation.

How to Run Long Running Scripts from Terminal

Encrypt and Decrypt Files Using TAR Command - Tech Arkit

Migrate LVM from One Server to Another Server | Tech Arkit

Nagios XI Installation in Centos 7 | Tech Arkit

Now in all Enterprise environments monitoring tool is mandatory to manage N number of Servers with less down time. Here is a Nagios Xi Enterprise Monitoring tool for Enterprise.

Nagios XI provides Monitoring for Mission-Critical applications, Servers, Network Devices, Services and Server Hardware Monitoring.

:: Advantages ::

Low cost compare to other Enterprise Monitoring tools

Multi User support

Fully Customization as per the requirement

Integrated Nagvis Support

Powerful Dashboards

Capacity planning integrated to predict out of resource

PHP based application lite weight and faster access

Client based monitoring (NRPE OR NSClient++) and Client less monitoring (SNMP)

:: Nagios XI installation prerequisites ::

OS RHEL 6/7 Or Centos 6/7 Ubuntu 14,16 and 18

If it is Red hat it should be registered with Red hat Networks

Enable Additional Repository/Channel using rhn-channel for Red hat Linux

OS should be installed in minimal installation (Clean installation is recommended) Do not plan to install anything other than Nagios XI

Minimum 2GB RAM

Minimum 20GB hard Disk space

1 CPU 2.4GHz

MySQL Or MariaDB and Postgres SQL Databases

PHP5 version is required

Linux boot process | Tech Arkit

TP-Link Archer C6 AC1200 Wireless MU-MIMO Gigabit Router | Tech Arkit

Software RAID Vs. Hardware RAID | Tech Arkit

Unary Operator Shell Scripting | Tech Arkit

-b file is a block device file.

-c file is a character device file.

-d file is a directory.

-e file exists.

-f file is a regular file.

-g file has its setgid bit set.

-G file's group ID is the same as the effective group ID

-h file is a symbolic link.

-k file has its sticky bit set.

-L file is a symbolic link.

-O file is owned by the shell's effective user ID.

-p file is a pipe or named pipe

-r file is readable.

-s file is not empty.

-S file is a socket.

-u file has its setuid bit set.

-w file is writable.

-x file is executable

Youtube PlayLists

RHCE: https://goo.gl/LGTmDK

Shell-Scripting: https://goo.gl/a1Hu3s

Linux-Commands: https://goo.gl/QDoL7h

RHCSA Certification: https://goo.gl/X2Ksqn

Putty Software Tricks: https://goo.gl/MB1Do2

Linux OS: https://goo.gl/62p8s9

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Ubuntu 19.04 Disco Dingo Installation | Tech Arkit

Shell Scripting Tutorial | Tech Arkit

https://youtu.be/Nl_iAPZ355U

RAID Level 5 Explained | Tech Arkit

The problem with RAID 5 is that once a member disk has failed, one more failure would be irrecoverable. To reduce the probability of double failure you need to monitor the array and/or use hot spares. However, even if the RAID rebuild is commenced immediately once the drive fails, it is required to read the entire array in order to complete the rebuild.

What is RAID | Tech Arkit

Nagios Tutorial - Install NRPE and Add Linux Host to Monitoring | Tech A...

Nagios Core Monitoring Windows Server Using NSClient | Tech Arkit

AWS Free Tier Account Creation in 4 Minutes

AWS Free tier account creation, first step to your learning AWS cloud. #AWS #FREE #techarkit

Different Types of Proxy servers explained - Tech Arkit

#RHCE #Linux #Tutorial

Youtube PlayLists

RHCE: https://goo.gl/LGTmDK

Shell-Scripting: https://goo.gl/a1Hu3s

Linux-Commands: https://goo.gl/QDoL7h

RHCSA Certification: https://goo.gl/X2Ksqn

Putty Software Tricks: https://goo.gl/MB1Do2

Linux OS: https://goo.gl/62p8s9

Follow Us on Social Media

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AWS Free Tier Account: http://bit.ly/aws-free-tier-account

Transparent Proxy Server - Tech Arkit

squid proxy server in RHEL7 | RHCE | Tech Arkit

Slave / Secondary DNS Configuration | RHCE | Tech Arkit

#RHCE #Linux #Tutorial

Youtube PlayLists

RHCE: https://goo.gl/LGTmDK
Shell-Scripting: https://goo.gl/a1Hu3s
Linux-Commands: https://goo.gl/QDoL7h
RHCSA Certification: https://goo.gl/X2Ksqn
Putty Software Tricks: https://goo.gl/MB1Do2
Linux OS: https://goo.gl/62p8s9

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Whatsapp Group: http://bit.ly/wappg
Telegram Group: http://bit.ly/linux-telegram
AWS Free Tier Account: http://bit.ly/aws-free-tier-account

Linux Create User | Shell Script | RHCE | Tech Arkit

#RHCE #Linux #Tutorial

Youtube PlayLists

RHCE: https://goo.gl/LGTmDK

Shell-Scripting: https://goo.gl/a1Hu3s

Linux-Commands: https://goo.gl/QDoL7h

RHCSA Certification: https://goo.gl/X2Ksqn

Putty Software Tricks: https://goo.gl/MB1Do2

Linux OS: https://goo.gl/62p8s9

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Telegram Group: http://bit.ly/linux-telegram

AWS Free Tier Account: http://bit.ly/aws-free-tier-account

MAC Binding DHCP Configuration RHCE - Tech Arkit

#RHCE #Linux #Tutorial

Youtube PlayLists

RHCE: https://goo.gl/LGTmDK

Shell-Scripting: https://goo.gl/a1Hu3s

Linux-Commands: https://goo.gl/QDoL7h

RHCSA Certification: https://goo.gl/X2Ksqn

Putty Software Tricks: https://goo.gl/MB1Do2

Linux OS: https://goo.gl/62p8s9

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