Delivery or Delay
Posted on 4th Mar 2021 12:00:28
Get Projects Done, Faster- The no1 Project Management Rule
Time Relativity in "Future Is Faster Than You Think"
Posted on 2nd Mar 2021 17:54:41
Future Is Faster Than You Think
ZFS deduplication in linux
Posted on 8th Oct 2020 14:00:24
It is widely know that ZFS can compress and deduplicate. The deduplication works across the pool level and removes duplicate data blocks as they are written to disk. This results into having only unique blocks stored on the disk while the duplicate blocks are shared among the files.
Lets dig into some figures with 2 disks as you can see here my pool: zpool create -f tank mirror xvdb xvdc zfs set compression=on tank zfs set compression=lz4 tank
Ceph Deploy
Posted on 8th Oct 2020 13:58:27
Ceph - Object Storage
- Block Storage
- Filesystem
Pentru un setup ceph cluster avem nevoie de minim 4 noduri: ceph-admin (pentru deploy), nod1(monitorizare), nod2 (osd), nod3(osd)
Ceph RBD
Posted on 8th Oct 2020 13:45:51
Ceph RADOS Block Device (RBD)
Ceph is a massively scalable, open source, distributed storage system. It is comprised of an object store, block store, and a POSIX-compliant distributed file system. The platform can auto-scale to the exabyte level and beyond. It runs on commodity hardware, is self-healing and self-managing, and has no single point of failure. Ceph is in the Linux kernel and is integrated with the OpenStack cloud operating system. Due to its open-source nature, you can install and use this portable storage platform in public or private clouds.
Kraken
Posted on 8th Oct 2020 13:36:17
Kraken Install
Kraken is a Free ceph dashboard for monitoring and statistics.
Linux Bash - Choices and Loops
Posted on 18th Sep 2020 19:21:49
This Bash script is a way of displaying a CLI menu in blue color scheme. What we have here is a list of seven choices, each choice is an external command that feeds back various information. Play around with the commands and choices, and see what you can come up with. This script gives a good idea of what can be achieved with Bash scripts.
#!/bin/bash
E='echo -e';e='echo -en';trap "R;exit" 2
ESC=$( $e "e")
TPUT(){ $e "e[${1};${2}H";}
CLEAR(){ $e "ec";}
CIVIS(){ $e "e[?25l";}
DRAW(){ $e "e%@e(0";}
WRITE(){ $e "e(B";}
MARK(){ $e "e[7m";}
UNMARK(){ $e "e[27m";}
R(){ CLEAR ;stty sane;$e "ece[37;44me[J";};
HEAD(){ DRAW
for each in $(seq 1 13);do
$E " x x"
done
WRITE;MARK;TPUT 1 5
$E "BASH SELECTION MENU ";UNMARK;}
i=0; CLEAR; CIVIS;NULL=/dev/null
FOOT(){ MARK;TPUT 13 5
printf "ENTER - SELECT,NEXT ";UNMARK;}
ARROW(){ read -s -n3 key 2>/dev/null >&2
if [[ $key = $ESC[A ]];then echo up;fi
if [[ $key = $ESC[B ]];then echo dn;fi;}
M0(){ TPUT 4 20; $e "Login Info";}
M1(){ TPUT 5 20; $e "Network";}
M2(){ TPUT 6 20; $e "Disk";}
M3(){ TPUT 7 20; $e "Routing";}
M4(){ TPUT 8 20; $e "Time";}
M5(){ TPUT 9 20; $e "ABOUT";}
M6(){ TPUT 10 20; $e "EXIT";}
LM=6
MENU(){ for each in $(seq 0 $LM);do M${each};done;}
POS(){ if [[ $cur == up ]];then ((i--));fi
if [[ $cur == dn ]];then ((i++));fi
if [[ $i -lt 0 ]];then i=$LM;fi
if [[ $i -gt $LM ]];then i=0;fi;}
REFRESH(){ after=$((i+1)); before=$((i-1))
if [[ $before -lt 0 ]];then before=$LM;fi
if [[ $after -gt $LM ]];then after=0;fi
if [[ $j -lt $i ]];then UNMARK;M$before;else UNMARK;M$after;fi
if [[ $after -eq 0 ]] || [ $before -eq $LM ];then
UNMARK;M$before; M$after;fi;j=$i;UNMARK;M$before;M$after;}
INIT(){ R;HEAD;FOOT;MENU;}
SC(){ REFRESH;MARK;$S;$b;cur=`ARROW`;}
ES(){ MARK;$e "ENTER = main menu ";$b;read;INIT;};INIT
while [[ "$0" != " " ]]; do case $i in
0) S=M0;SC;if [[ $cur == "" ]];then R;$e "n$(w )n";ES;fi;;
1) S=M1;SC;if [[ $cur == "" ]];then R;$e "n$(ip a )n";ES;fi;;
2) S=M2;SC;if [[ $cur == "" ]];then R;$e "n$(df -h )n";ES;fi;;
3) S=M3;SC;if [[ $cur == "" ]];then R;$e "n$(ip route )n";ES;fi;;
4) S=M4;SC;if [[ $cur == "" ]];then R;$e "n$(date )n";ES;fi;;
5) S=M5;SC;if [[ $cur == "" ]];then R;$e "n$($e by dan langas )n";ES;fi;;
6) S=M6;SC;if [[ $cur == "" ]];then R;exit 0;fi;;
esac;POS;done
Seymour Cray
Posted on 17th Sep 2020 10:52:37
"Anyone can build a fast processor. The trick is to build a fast system."
Linus Torvalds
Posted on 17th Sep 2020 10:40:24
"In real open source, you have the right to control your own destiny."
Heron Systems' AI system beats US military pilot in Lockheed Martin F-16 Fighting Falcons in US DARPA AlphaDogfight Trials aerial combat
Posted on 25th Aug 2020 16:57:00
An artificial intelligence algorithm successfully defeated an experienced US fighter pilot in five out of five simulated fights.
Luca de Meo, CEO of Renault: "Dacia is more than a miracle"
Posted on 31st Jul 2020 11:59:25
Luca de Meo, who has officially taken over the position of CEO of the Renault Group since July 1, considers the Dacia brand a real "miracle"
SUSE TO ACQUIRE RANCHER LABS, BECOMING A MARKET LEADER IN ENTERPRISE KUBERNETES MANAGEMENT
Posted on 8th Jul 2020 22:18:58
SUSE, the world’s largest independent open source company, has entered into a definitive agreement to acquire Rancher Labs. Based in Cupertino, California.
World is shifting from finance to technology in an unprecedented pandemic
Posted on 8th Jul 2020 12:30:44
Tech and scientific workers overtake finance professionals as highest-paid jobs in China
Brillio announced the acquisition of Cognetik, a data and insights company
Posted on 8th Jul 2020 12:16:45
US Brillio, a leading digital technology consulting and solutions company announced the acquisition of Romanian Cognetik, a data and insights company with deep expertise in improving digital experiences for its customers.
Vim Masterclass
Posted on 7th Jul 2020 23:14:44
Mastering the vi and Vim Editors on the Linux, Unix, Mac, and Windows Operating Systems
Did you know that the most productive command line experts exploit the powerful features of the Vim text editor?
Automation with Ansible Playbooks
Posted on 7th Jul 2020 23:12:08
Using Ansible to automate local and cloud configuration management tasks with Playbooks
This course is designed to get you hands-on with using Ansible for automating local and cloud configuration management tasks with Playbooks.
Terraform: Up & Running: Writing Infrastructure as Code, 2nd Edition
Posted on 2nd Jul 2020 09:15:14
Terraform has become a key player in the DevOps world for defining, launching, and managing infrastructure as code (IaC) across a variety of cloud and virtualization platforms, including AWS, Google Cloud, Azure, and more.
Data Science and Machine Learning: Mathematical and Statistical Methods
Posted on 22nd Jun 2020 08:42:22
Author: Dirk P. Kroese
Pub Date: 2020
ISBN: 978-1138492530
Pages: 532
Language: English
Artificial Intelligence
Posted on 22nd Jun 2020 07:51:14
Artificial Intelligence and Machine Learning are two of the most groundbreaking aspects of modern computing.