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.
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/
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
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Writing your first Ansible playbook guide
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How to variables in Ansible playbook
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Conditionals and Loops of Ansible playbooks
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Ansible playbook challenge
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Ansible Roles | Ansible Tutorial | Class #10 | Tech Arkit
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Ansible Ad-Hoc Commands with examples
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Writing your first Ansible playbook guide
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How to variables in Ansible playbook
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Conditionals and Loops of Ansible playbooks
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Ansible playbook challenge
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Deploy LAMP Stack Using Ansible Playbook
https://youtu.be/cyylA0Yfn2o
Tags Ansible
https://youtu.be/LPdRHd4ID7c
Ansible Roles
https://youtu.be/MGklkuq0-Gs
Ansible Tags Example | Class #9 | Tech Arkit
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Ansible Inventory configuration
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Ansible Ad-Hoc Commands with examples
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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
Deploy LAMP Stack Using Ansible Playbook | Real time example | Class #8 ...
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Ansible Ad-Hoc Commands with examples
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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
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Ansible playbook challenge
https://youtu.be/SO-3nqAf3sY
Deploy LAMP Stack Using Ansible Playbook
https://youtu.be/cyylA0Yfn2o
Ansible Playbook Challenge #1 | Tech Arkit
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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 conditional variables and loops | Class #7 | Tech Arkit
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Ansible Course
Class 1: https://youtu.be/-b1ByalW4X8
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Class 3: https://youtu.be/G7_orKIWAeA
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Class 6: https://youtu.be/nOOe-_rNhP8
Class 7: https://youtu.be/JYPn5l3ChX0
How to Write Ansible playbook | Class #5 | Tech Arkit
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Class 3: https://youtu.be/G7_orKIWAeA
Class 4: https://youtu.be/Kr-62ON416c
Class 5: https://youtu.be/2nRfP69sGsk
Ansible Ad Hoc Commands | Class #4 | Tech Arkit
Ansible Automation Playlist:
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Class 3: https://youtu.be/G7_orKIWAeA
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Ansible Inventory Configuration | Manual Inventory | Class #3 | Tech Arkit
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Ansible Lab Setup | Installation | Class #2 | Tech Arkit
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Ansible Automation Course D0407 | Class 1 | Tech Arkit
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Introduction to Linux for Absolute Beginners |TechArkit
Youtube PlayLists
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RHEL 8 How to resize partition (Extend) | Tech Arkit
Youtube PlayLists
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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.
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
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
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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
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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.
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
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
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Ubuntu 19.04 Disco Dingo Installation | Tech Arkit
Ubuntu 19.04 Disco Dingo Installation | Tech Arkit
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
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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
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Transparent Proxy Server - Tech Arkit
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Slave / Secondary DNS Configuration | RHCE | Tech Arkit
#RHCE #Linux #Tutorial
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Linux Create User | Shell Script | RHCE | Tech Arkit
#RHCE #Linux #Tutorial
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MAC Binding DHCP Configuration RHCE - Tech Arkit
#RHCE #Linux #Tutorial
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