ping from file

ping from file 

disable martian_log

How to disable martians log:

Ansible playbook for install apache, restart apache and creating file in apache directory

Ansible playbook for install apache, restart apache and creating file in apache directory

wget via proxy

 How to use wget via proxy?

bash script for download and upload ssh keys via ansible

I like bash and ansible

sshfs

 How to use sshfs? 

script for check ansible hosts

basic script for check ansible hosts 

ansible-playbook for creating files

playbook for creating directory

yamllint - yaml validator to CLI

 yaml validator to console: yam

ansible and /etc/hosts

 ansible and /etc/hosts

dpkg-reconfigure openssh-server

Sometimes openssh server doesn't have key files. I mean these files:

tar to differnt directory

tar -C

ansible playbook for migrating /etc/hosts

ansible is awesome and ssh is the best. Nothing more.  (Of course, your brain) 

Linux binary permission

only for physical explanation :-) (Only notes to me) 

update ubuntu basic script

update ubuntu basic script

chmod sticky bit

 Let me explain how to work chmod +t. 

Installing editors via ansible on three servers

Creating playbook to installing editors (nano, mc, vim) on all hosts:

generate ssh key and send via ansible

basic bash script.

ansible - copy configuration files (dns)

How copy files in ansible? Easy!

How to enable logs in ansible?

logs in ansible:

How to change hostname without reboot?

 How to change hostname without reboot? 

rhcsa 14-19

rhcsa 14-19 

rhcsa - 15 task - script (users)

basic script for question 15 (C, D)

ansible - migrating crontab

Every admin on the Earth loves God for discovering electricity and Cron. In this case we mean Cronos, god of times. How migrate cron jobs to other servers via ansible? Easy. 

disable selinux in configuration file grub

 It's easy. Check /etc/default/grub

rhcsa 11-13

my next study

ansible update on three servers

 ansible and yum update: yum update -y on three servers

find and size

 find more than 5M files in /etc/ directory 

RHEL8 -graphical installation

 My first installation of RHEL 8.5

Ansible show hosts

 Ansible show hosts 

rhcsa - 7-10 - tasks

rhcsa - 7-10 - tasks

rhcsa notes: 1-6

 rhcsa notes: 

read - mkdir - script for 3 directories

read - mkdir - script for 3 directories

How to generate ssh keys without passphrase

How to generate ssh keys without passphrase