Carles Mateo's blog

TitleViewsCreation DateCategoriesTags
Performance of several languages179,5242014-10-13 04:26:37Web development, Virtualization, Performance, Cloud providers, Software developmentPerformance, PHP, C, Java, Python, Symfony, Assembler, Perl, Go, Ruby, Bash, JIT Compilers, Luajit, Pypy, Cliff Click, HHVM - Facebook's Hip Hop Virtual Machine, Lua, objdump, Assembler AT&T syntax, Assembler Intel syntax, node.js, Gambas, Phantomjs, PHP 7, PHP 5.6, PHP 5.5, PHP 5.4
Stopping and investigating a WordPress xmlrpc.php attack147,4032014-08-30 22:21:13Virtualization, Performance, Troubleshoot, Security, Databases, MySQL, CMS, WordPressAmazon EC2, PHP, DoS, WordPress, xmlrpc, Spam, Apache, MySQL, Plugins WordPress, Slow queries
Stopping a BitTorrent DDoS attack65,8612015-01-23 21:55:35Performance, TroubleshootGET, EzPublish, DoS, WordPress, Symfony, DDoS, SYN Flood, Pirates, Amazon c4.8xlarge, Laravel Framework, Magento, Drupal, Joomla, iptables, Firewall, BitTorrent
Using Windows 10 Appliance in Ubuntu Virtual Box 4.3.1033,3102015-08-23 06:42:44Web development, Virtualization, Troubleshoot, Casual techWindows 10, Microsoft, Ubuntu 14.04, Virtual Box, Bless Hex Editor
Improving performance in PHP28,4592014-08-11 02:02:42Operation costs, Web development, Virtualization, Performance, Cloud providers, NoSql, Software developmentPerformance, Cassandra, PHP, C, C extensions, RAM, Ramdisk, Database Sharding
Java validation Classes for Keyboard27,6312020-12-15 23:30:49Software development, JavaJava, java.util.Scanner, Data Validation
Stopping definitively the massive Distributed DoS attack26,0642015-02-01 12:27:16Bandwidth, Performance, Troubleshoot, OperationsDoS, DDoS, iptables
Creating a Content Filter for Postfix in PHP24,8042016-06-30 12:43:19Software development, DevOpsPHP, postfix, content filters, SMTP
CSort multithread versus QuickSort with Java Source Code22,1652017-03-26 19:40:14Performance, Software development, AlgorithmsJava, csort, Quicksort, MultiThreading
Scaling phantomjs with PHP21,6662015-06-17 15:55:04Bandwidth, Web development, TroubleshootPhantomjs, nodejs, SSL, Advisor, ghost-town
NAS and Gigabit21,3852013-08-18 14:54:43Amazon EC2, Bandwidth, Data Centers, Hardware, NAS, Rack Servers, Virtualization, Performance, Cloud providersAmazon EC2, Gigabit, NAS, Common Errors, Rack Servers, Blade Servers, Performance, Unix command: dd, disks: SATA, disks: SAS, disks: SSD, Mellanox
Install Windows Subsystem for Linux, WSL 2 on Windows 10 64 bit, with Ubuntu, solution to error WslRegisterDistribution failed with error: 0x8007005716,4382021-01-13 21:48:13Virtualization, Operating Systems, Windows 10 ProMap-Reduce, Debian, htop, Windows 10, Linux,, ETL, WSL - Windows Subsystem for Linux, GitBash, Powershell, Kali Linux
csort, my algorithm that heavily beats quicksort14,5182015-05-25 23:09:56Performance, Software developmentPHP, C, Java, JIT Compilers, HHVM - Facebook's Hip Hop Virtual Machine, Algorithms, csort, Big-O, Big Data, Quicksort, Arrays
Raspberry Pi and osmc13,2642015-04-06 11:58:32Hardware, Casual techssh, RaspBerry Pi, osmc, Debian, htop, Start up
Linux command-line tools I usually install12,3712016-03-11 14:06:31Troubleshoot, OperationsPerformance, htop, mytop, ncdu, Systems, ethtool, iftop, perf, zram
Begin developing with Cassandra12,0822014-07-31 21:45:29Operation costs, Web development, Performance, NoSql, Software developmentNoSql, Cassandra, PHP, LunaCloud, Java, Python
Troubleshooting upgrading and loading a ZFS module in RHEL7.411,4562018-07-03 02:45:23Troubleshoot, Software development, DevOpsstrace, ZFS, RHEL
The Cloud is for Scaling11,2372013-09-21 22:16:42Amazon EC2, Bandwidth, Operation costs, Data Centers, NAS, Virtualization, Performance, DigitalOceanAmazon EC2, Cloud providers, Cost saving, NAS, ISP - Internet Service Provider, CloudWatch, DigitalOcean, SSD, Dropbox
What is PrototypeC and how you can DIY10,7412015-05-08 18:31:36Hardware, Raspberry Pi 2RaspBerry Pi, DIY, PrototypeC, Battery, touch screen, Raspberry Pi 2, Wearable, LXDE
Why you should not use t1.micro Amazon Free Tier9,7562013-08-30 10:31:47Amazon EC2, Performance, Cloud providersAmazon EC2, Performance, CMIPS, Vmware
CTOP.py9,3092020-01-12 17:39:36Data Centers, Virtualization, Cloud providers, Troubleshoot, Operations, Docker ContainersFirewall, htop, iftop, top, ctop
Solving Oracle error ORA 600 [KGL-heap-size-exceeded]9,1682021-02-01 19:38:37Web development, Troubleshoot, SRE, OracleOracle 10g, Oracle, Error ORA 600, KGL-heap-size-exceeded
Things I hate from PHP9,0212014-03-30 13:10:51Web development, Troubleshoot, Software developmentPHP, Sermepa, bug, featured
A simple sample to print colors in Terminal with Python (local tty or stty in a ssh)8,9052018-05-17 20:24:07Casual tech, PythonPython, Python 2.7, Python 3.6
ZFS Improving iSCSI performance for Block Devices (trick for Volumes)8,8242018-10-19 11:18:53NAS, Performance, StorageZFS, zvol, iSCSI
Curiosity Python string.strip() removes just more than white spaces8,1722018-11-27 19:04:18Troubleshoot, Software developmentPython, Python 2.7, Python 3.6, Curiosity
Adding a RAMDISK as SLOG ZIL to ZFS7,5512020-08-23 10:51:46Storage, MDRAID, NFS, ZFSSSD, Ramdisk, ZFS, SSD drives, ZIL, NVMe, IOC, SLOG, SSD Enterprise, 10GbE, Bonding, zpool, JBOD
Upgrade your Scalability with NoSql7,4502014-02-15 21:42:48NoSqlNoSql, Cassandra, MongoDb, Hadoop, Memcached, Redis, Map-Reduce, Riak, Project Voldemort
Some advice for WFH (Working From Home, especially under the covid lock down)7,4162020-05-17 18:10:12Casual tech, WorkplaceRemote Work, WFH - Work from Home
An Epic fail that are committing all the universities7,0562018-06-14 19:35:13Performance, Troubleshoot, Software development, HiringC, Python, Philosophy, University, Code
Creating a compressed filesystem with Linux and ZFS (using just files)6,8822018-09-26 15:48:56Performance, StorageZFS, Compression, LZ4
A quick note about symmetric encryption and entropy6,8792015-04-02 21:53:53Operation costs, Performance, Software developmentJava, UUID, encryption, Security, c-client
Adding my Server as Docker, with PHP Catalonia Framework, explained6,5242019-07-03 07:00:43Web development, Virtualization, Cloud providers, DevOps, Docker ContainersAmazon EC2, Apache, Catalonia Framework, IaC Infrastructure as Code, git, lynx, Docker, Dockerfile
My talk at OpenZFS 2018 about DRAID6,3542018-09-15 02:28:54Software development, Travel and countries, StorageZFS, DRAID, OpenZFS
Upgrading my new HP 14-bp060sa6,1112019-09-14 15:17:54Hardware, Troubleshoot, Software development, LaptopsVmware, Barcelona, Amazon, Windows 10, M.2, NVMe, HP, Hardware upgrade, Ireland, Laptop, Personal Security, Kitematic
A sample forensic post mortem for a iSCSI Initiator (client) that had connectivity problems to the Server5,8002019-08-12 18:30:54Troubleshoot, StorageZFS, iSCSI, Linux, Post-Mortem, Forensic
A small Python + MySql + Docker program as a sample5,5382021-07-07 22:20:12Docker Containers, Python, MySQLPHP, Python 3.6, MySQL, Docker, Dockerfile, Python Combat Guide, HTML
Dealing with Performance degradation on ZFS (DRAID) Rebuilds when migrating from a single processor to a multiprocessor platform5,5152019-06-07 14:49:30Data Centers, Hardware, NAS, Rack Servers, Performance, Troubleshoot, Operations, StorageCMIPS, htop, ZFS, DRAID, SAS, Multiprocessor, Memory, dmidecode, Expanders, iostat, dd, sg utils, lscpu, 4U90, 4U60, 4602, Spinning drives, SSD drives, QPI
Some handy tricks for working with ZFS5,4052019-06-25 21:50:06NAS, StorageRamdisk, ZFS, DRAID, partition, dd, parted, gpt, MBR, ZIL, screen
Upgrading Amazon AWS EC2 Ubuntu 18.04 LTS to Ubuntu 20.04 LTS5,2732021-06-05 21:25:46Operations, Operating Systems, Ubuntu LinuxAmazon EC2, Linux, Ubuntu 20.04 LTS, Ubuntu 18.04 LTS
Resources for Microservices and Business Domain Solutions for the Cloud Architect / Microservices Architect5,1962019-10-05 21:32:45Operation costs, Web development, Performance, Software development, Docker Containers, Microservices, PythonNoSql, PHP, Java, Python, Docker, Microservices, Spring Cloud, Spring Boot, Kubernetes, Business Domain, CI/CD, Galileo, Amadeus, GDS, ASP.NET Core, Flask
Working in Cork, Ireland, for IT Engineers5,1892020-02-23 20:22:33Travel and countries, IrelandCork
A script to backup your partition compressed and a game to learn about dd and pipes5,1142020-05-24 18:20:00Operations, Storage, BashBash, partition, dd, Bash Scripts, Backups, pv, STDOUT, STDERR, STDIN, zcat, zless, gzip, bzip2, pixz
Solving a persistent MD Array problem in RHEL7.4 (Dual Port SAS drives)5,1132018-10-31 20:02:57Hardware, Troubleshoot, DevOps, Storage, MDRAIDZFS, RHEL, DRAID, MDRAID, RAID6, Dual port SAS
Lesson 0, learning to code in Python for non programmers5,0592020-03-31 18:47:02Software development, Casual tech, PythonPython, PyCharm, Video
Create a small partition on the drives for tests5,0512019-04-18 16:46:39NAS, Troubleshoot, Operations, StorageBash, ZFS, fdisk, partition
Working in Barcelona, Catalonia, for IT Engineers5,0192020-02-23 21:20:14Travel and countries, CataloniaBarcelona
Solving the problem when running a Docker Container: standard_init_linux.go:190: exec user process caused "no such file or directory"4,9582021-03-27 22:43:13Operations, DevOps, Docker ContainersDocker, Dockerfile, CRLF, LF
Simulating a SAS physical pull out of a drive4,9562019-03-14 14:13:14Hardware, Operations, StorageZFS, SAS, Testing
LDAPGUI a LDAP GUI program in Python and Tkinter4,9372020-06-27 23:21:56Software development, Operations, Python, OpenLDAPPython, Python 3.6, Docker, Dockerfile, LDAP, Tkinter, PHPLDAPMIN, docker-compose
Bash Script: Count repeated lines in the logs4,7302020-05-02 13:55:51Troubleshoot, Software developmentBash,, Bash Scripts
Raspberry Pi: Solving the problem GPIO.setup(self.number, GPIO.IN, self.GPIO_PULL_UPS[self._pull]) RuntimeError: Not running on a RPi! in Ubuntu 20.04LTS4,7302021-02-16 10:00:00Casual tech, Raspberry Pi 4, PythonPython, RaspBerry Pi, Raspberry Pi 3, Raspberry Pi 4,, Ubuntu 20.04 LTS, Raspberry Pi 3D LED Christmas Tree, ARM Processors, Raspberry GPIO
Creating a VM for compiling ZFS with RHEL6.104,7172019-08-02 20:00:46Virtualization, Software development, Storage, Bash, ZFS, CZFS, RHEL, DRAID, VirtualBox
Google Compute Engine Talk for Group Google Developers Cork4,7052019-02-06 16:14:49Virtualization, Performance, Cloud providers, Software development, Google Cloud, Google Compute EngineBash, Google Cloud, Load Balancer, AutoScaling, Ubuntu
Refreshing settings in a Docker immutable image with Python and Flask4,6782020-05-10 18:10:26Web development, Software development, Docker Containers, Microservices, PythonPython, Docker, Dockerfile, Jenkins, Flask, Artifactory
2021-12-22 News from the blog4,6672021-12-22 15:12:21News for the blogJava, Charity, carleslibs, Log4j, NSO zero-click iPhone exploit, Lions
Why Cloud is not optional4,6392013-02-22 23:12:38Amazon EC2, Bandwidth, Operation costs, Cloud providersAmazon EC2, Cloud providers, Servers, Instances, Cost saving
A handy trick command line to get the usages of our Python Methods in the code4,6392019-07-15 18:41:26Software development, Casual tech, DevOpsPython, Bash, Dead code, Jenkins, PyCharm
Post-Mortem: The mystery of the duplicated Transactions into an e-Commerce4,5492020-11-03 22:28:54Web development, Operations, DevOps, Reflections, Business, Databases, MySQL, SRE, Post-Mortem AnalysisWeb Development, PHP, Apache, UUID, Load Balancer, MySQL, FrontEnd, OOP, Transactions, Stored Procedures, E-Commerce, Akamai, Payment method: Parcelados, BackEnd, JSON, mysqldebugger, logs, JavaScript
Troubleshooting a shell prompt irresponsible that locks/hangs intermittently4,4912020-04-06 18:30:11Troubleshoot, Operations, DevOps, Storage, NAS, NFSBash, ssh, iSCSI, NFS, Lock, IO Lock, mount, dmesg
How to recover access to your Amazon AWS EC2 instance if you loss your Private Key for SSH4,3142020-09-21 22:27:53Amazon EC2, Cloud providers, Operations, Security, MySQL, Amazon CloudAmazon EC2, ssh, Key pairs cert, Extreme situations - Utility to calculate the bandwidth used by all your drives4,1742020-08-06 19:09:37Performance, Storage, NAS, MDRAID, NFS, Bashiostat, Bash Scripts, iotop,
Extend existing Single ZFS disk with a mirror without losing the Data on the existing HDD3,7572021-01-31 18:18:00Virtualization, Storage, ZFSZFS, mirror, checksum, sha512sum
News from the blog 2020-09-213,6782020-09-24 21:10:31News for the blog, Amazon CloudWindows 10, DevOps, HTML, Frames, Squirrel Attack, Amazon Compute Optimized, jira, Confluence
Troubleshooting apps in Linux3,4352013-11-22 14:18:52Performance, Troubleshootstrace, debug, ltrace, lsof
Making responsive WordPress Theme Twenty Twelve to support greater resolutions3,4272020-03-14 12:40:14Web development, Casual techWordPress, FrontEnd, WP Themes, CSS, Responsive Web
News from the blog 2020-11-033,3622020-11-03 06:00:57Hardware, NAS, Operations, Storage, News for the blog, Books, ZFSZFS, Docker, VirtualBox, SAS 12Gbps, SATA3, UPS, PSU, KVM, PCI 4.0, NVMe SSD Samsung 980 PRO PCI 4.0 (x4), ASUS, ASUS Motherboards, AMD, Corsair, Icy Dock
News from the blog 2020-10-163,3552020-10-16 22:52:22Web development, Troubleshoot, Storage, News for the blog, Security, WordPress, BashCMIPS, Firewall, ZFS, Ubuntu, SAS, SAS 12Gbps, SATA3, HBA
Programs I use for Windows in my Workstations3,2502020-09-21 19:44:04Casual tech, WorkplaceVmware, Windows 10, PyCharm, VirtualBox, LDAP, RAR, Slack, MyDebugger, LibreOffice, GIMP, OBS, VNC, Editplus, HeidiSQL, SQLite, MariaDB
News from the blog 2020-08-103,2242020-08-12 12:39:54News for the blogCOVID-19, WFH - Work from Home, Atlassian
News from the blog 2020-08-193,1082020-08-26 18:01:21News for the blogVmware, Python, ZFS, OpenZFS, PyCharm, VirtualBox, Python Combat Guide, OOP, JetBrains
A Bash script for counting the number of lines of your code3,0982020-12-29 18:21:15Python, BashBash Scripts
Media Player in my Raspberry Pi 43,0772020-03-13 22:11:54Casual tech, Living abroad, Raspberry Pi 4Raspberry Pi 2, Raspberry Pi 3, Raspberry Pi 4, LibreELEC, Kodi, Media Player, 4K
A base Dockerfile for my Jenkins deployments3,0462021-03-30 09:30:00Operations, DevOps, Docker Containers, Python, SRE, Unit TestingJava, Docker, Dockerfile, Jenkins, Python 3, pytest, Unit Testing, sshpass
News from the Blog 2020-07-192,9992020-07-19 14:17:05News for the blogAmazon, Netflix, WFH - Work from Home,, Slack, Hexagonal Architecture, HA Proxy
News from the Blog 2020-11-112,9432020-11-11 06:44:00Storage, News for the blog, Books, ZFSDIY, ZFS, 4K, Netflix, SAS 12Gbps, Disney+, Movember,, VR - Virtual Reality, Steam, Code for America, Charity, The Mandalorian, Star Wars A simple Bash script to compress files in a directory, older than n days2,9212021-03-21 15:15:00Software development, BashBash Scripts, gzip, Cron
Why is not a good idea to pass data via parameters via URL / GET2,7522013-04-13 17:01:59Web developmentGET, POST, URL encoding, Web Development
Why I propose you to use Python 3.8, at least, for your Internal Automation Tools in Docker Containers2,7012021-03-23 18:10:00Software development, Operations, PythonPython, Python 3.6, Docker, Ubuntu 20.04 LTS, Python 3.7, Python 3.8, Python 3.9, EOL, wheel
cmemgzip Python tool to compress files in memory when there is no free space on the disk2,5542021-02-20 10:10:00DevOps, Reflections, ZFS, SRERamdisk, ZFS, Memory, zcat, gzip, swap, Python 3, cmemgzip, inode
A simple Bash one line script to log the temperature of your HDDs and CPUs in Ubuntu2,4062021-01-30 13:59:41Hardware, Troubleshoot, Bashscreen, tee, hddtemp, sensors
News for the blog 2021-03-212,3722021-03-21 15:22:00News for the
Using Docker in Windows 10 without Windows Desktop with Docker Engine and without WSL2,3722022-02-14 16:51:01Virtualization, Docker Containers, Windows 10 Pro, Ubuntu Linux, VirtualBox, Hyper-VDocker, WSL - Windows Subsystem for Linux, Python 3, Docker Combat Guide book, Docker Desktop
Reinstall PIP in Windows 10 after it got removed2,3692021-03-03 17:40:52Python, Windows 10 ProPython, Windows 10, pip
A simple script to upload a PIP package2,3662021-03-21 07:00:00Software development, PythonPython, Pypy, pip
Dropping caches in Linux, to check if memory is actually being used2,3292019-04-25 14:56:51Performance, Troubleshoot, Operations, DevOpsRamdisk, Cache, iSCSI, memory leak, top
News from the blog 2020-12-162,3072020-12-16 20:40:16Bandwidth, Storage, News for the blog, Reflections, ZFSJava, ZFS, WFH - Work from Home, Bandwidth, Comcast, Game: Call of Duty,, Apache Kafka
Solving Windows 10 PRO running Active Directory as Domain Admin2,3052021-01-25 10:10:00Operating Systems, Windows 10 ProWindows 10, Active Directory
News from the blog 2020-11-232,2862020-11-23 06:00:57News for the blog
News from the blog 2021-01-112,2472021-01-11 18:30:00News for the blog, Python, Bash, PHP, JavaPHP, Java, Catalonia Framework, Python Combat Guide, WSL - Windows Subsystem for Linux
News from the Blog 2021-03-042,2182021-03-03 18:10:00News for the, vokoscreenNG, cmemgzip
Swap, swappiness, Servers not responding2,2182021-05-27 21:08:19Rack Servers, Virtualization, Performance, DevOps, SRE, Post-Mortem Analysis, Ubuntu Linuxiostat, screen, iotop, swap, swappiness, tee, swapfile, swapoff,, couchbase
Upgrading the Blog after 5 years, AWS Amazon Web Services, under DoS and Spam attacks2,2022019-05-02 15:29:30Uncategorized, Amazon EC2, Virtualization, Performance, Cloud providers, Operations, DevOpsAmazon EC2, WordPress, Apache, Firewall, Catalonia Framework, MySQL, Snapshot, PHP7
Forcing a Kernel Panic in CentOS or RHEL2,1692019-04-16 13:01:08Troubleshoot, DevOpsCentOs, RHEL, Kernel Panic, Linux
News from the Blog 2021-05-222,1602021-05-22 21:35:26News for the blogRaspberry Pi 4, Python Combat Guide,, Wifi, tp-link, Wifi Mesh, CIT University, UCC University
How to block scanners that look for vulnerabilities to your Ubuntu Apache site2,1312020-10-03 14:06:23Security, WordPress, BashApache, Ubuntu, ufw, Bash Shell Scripting
A sample way to return in Python not-to-do2,0472018-03-27 15:01:14Software development, Casual techPython
Provisioning AWS EC2 Instances with Ansible and Automating Apache deployment with or without using Ansible Dynamic Inventory from Ubuntu 20.04 LTS1,8692021-12-07 01:24:57Software development, DevOps, Python, Bash, Ubuntu LinuxApache, Python 2.7, Ubuntu 20.04 LTS, Python 3, Amazon Python SDK boto3, Ansible, Provisioning
Migrating some Services from Amazon to Digital Ocean1,8472021-08-09 20:45:49DigitalOcean, DevOps, Databases, MySQL, Amazon CloudDoS, WordPress, Apache, CentOs, MySQL, Docker, Dockerfile, gzip
Curiosity Python 2.7 and print() from Python 3.61,7502018-11-07 12:21:03Software developmentPython, Python 2.7, Python 3.6, Curiosity
Installing Red Hat Linux in a M.2 that crashes the installer1,7472019-08-20 20:00:34Performance, DevOpsRHEL, parted, M.2, xfs
Erasure Coding, simple, for huge Storage needs1,7242019-06-19 14:23:50Data Centers, Rack Servers, StorageErasure Coding, RAID, Software Defined Storage - SDS, Scale out, OpenStack Swift
Have a cheap Ubuntu in your Windows or Mac with Docker1,6532021-09-02 21:14:45Virtualization, Casual tech, Docker Containers, Python, Operating Systems, Ubuntu LinuxPython, Windows 10, Docker, Dockerfile, VirtualBox, Ubuntu 20.04 LTS, Mac OS X
My PHP Script to see WordPress Posts and Views ordered by Views1,6302021-08-15 16:01:39Web development, Software development, CMS, WordPress, PHPPHP, WordPress, Plugins WordPress, WP-PostViews WordPress Plugin
A sample Flask application1,6072021-07-26 19:24:00Web development, Docker Containers, PythonPython, Docker, Dockerfile, Python Combat Guide, Flask, Star Wars, Python 3
Solving an infinite loop in CentOS after inducing a Kernel Panic in a Server1,5842019-04-24 13:49:54Hardware, Rack Servers, Troubleshoot, OperationsCentOs, BMC, ipmi
A trick to see what causes Python error Unindent does not match any outer indentation level with PyCharm1,5502020-10-12 18:33:38PythonPython, Python 3.6, PyCharm, Tab \t, indent
News from the Blog 2021-11-111,5452021-11-11 11:11:00Amazon EC2, Web development, Virtualization, Cloud providers, DigitalOcean, Operations, DevOps, Google Cloud, Google Compute Engine, Docker Containers, News for the blog, Python, Books, Amazon Cloud, VMwareAmazon EC2, Google Cloud, MySQL, Jenkins, JavaScript, Python 3, Unit Testing, SEO - Search Engine Optimization, Amazon Python SDK boto3, Blizzard, Python Pandas package, Apache access.log, Angularjs, Web Scraping
Video: Beginners Python: teaching to work with for, range, lists, dicts1,5302021-07-15 19:30:00PythonPython 3, Learn Python, Carles Mateo Python teaching classes
Fixing problems with audio not sounding after upgrade from Ubuntu 18.04 LTS to 20.04.1 LTS1,5222020-10-13 13:31:23Troubleshootpulseaudio, Ubuntu 20.04 LTS
Adding a swapfile on the fly as a temporary solution for a Server with few memory1,4412020-11-17 22:10:29Performance, Operations, Post-Mortem AnalysisJava, dd, xfs, swap, swappiness, free, swapon, mkswap, fallocate, Java Heap, blkid
Blocking Russian and Belarus IP Addresses in Ubuntu's Firewall1,4342022-03-07 07:00:00SecurityFirewall, Russia, Belarus, Ukraine, Network
Communicating with Docker Containers via Linux Signals and Python1,4242021-11-09 22:56:34Docker Containers, Python, Ubuntu LinuxPython, Docker, Linux Signals
Python Programming class for beginners 2021-11-111,3912021-11-12 11:57:49PythonPython 3, Carles Mateo Python teaching classes
Some weird things from Python 3 that you may not know1,3842021-09-29 18:27:38Troubleshoot, PythonPython, Python Combat Guide, Python 3, Unit Testing, Overflow
News from the blog 2021-12-071,3472021-12-07 01:48:11Amazon EC2, News for the blog, Python, Books, Bash, Amazon Cloud, Ubuntu LinuxAmazon EC2, Charity, Amazon Python SDK boto3, LGBTQ Community, Ansible, Amazon S3, awk, grep
News of the blog 2021-08-161,3422021-08-16 16:07:00Web development, Virtualization, Docker Containers, News for the blog, MySQL, CMS, WordPress, ZFS, PHPPHP, Apache, ZFS, MySQL, Docker, Star Wars
Migrating my 11 years Amazon AWS account services (Postmortem Analysis)1,3422021-11-07 20:20:03Amazon EC2, Web development, Cloud providers, DigitalOcean, Operations, DevOps, Google Cloud, Google Compute Engine, Docker Containers, Security, Python, Books, Amazon Cloud, SRE, Post-Mortem AnalysisAmazon EC2, Security, Google Cloud, MySQL, Python 3, SEO - Search Engine Optimization, Amazon Python SDK boto3, SRE, Postmortem Analysis
News from the Blog 2021-07-011,3292021-06-25 16:12:00Google Compute Engine, News for the blog, Security, PythonCMIPS, Python Combat Guide, Python 3, Cryptomining, Judit Giró, Blue Box, Crowdfunding
Fixing Wifi not enabled in Linux Kali with Dell XPS laptop1,3142021-01-31 18:58:24TroubleshootKali Linux, Wifi, Dell xps
News from the blog 2021-07-231,2682021-07-23 10:00:00News for the blog, Python, MySQLPython, PHP 7, MySQL, Docker, Dockerfile, Python Combat Guide, carleslibs
Python Game Tic Tac Toe1,2442021-09-19 18:15:08Algorithms, PythonPython, Python 3, Learn Python, Python 3 Exercises for Beginners
Working abroad and the English complexes and insecurity of non natives1,2432020-04-12 19:51:34Living abroad, Catalonia, Ireland, ReflectionsIreland, English
Some graphics with matplotlib1,2422021-10-01 21:11:50PythonPython 3, Carles Mateo Python teaching classes, Python 3 Exercises for Beginners, Image generation, Python matplotlib
Quick Access Selection1,2112020-03-17 09:10:46Uncategorized
News from the blog 2021-10-211,1672021-10-21 16:04:31Hardware, News for the, PSU, Corsair, Charity, Python 3, pytest, OpenOffice, The Document Foundation
A simple trick to find your Git Submodules imports in Python by adding to Syspath1,1452020-08-10 23:13:27PythonPython, Python 2.7, Python 3.6, Python Combat Guide
Generating a Word Cloud of Tags in Python1,1362021-09-21 11:16:00PythonPython 3, Image generation, PNG File format, Tag Cloud, Python WordCloud, Python matplotlib
News from the Blog 2022-01-221,1182022-01-22 22:22:56Docker Containers, News for the blog, PHP, Ubuntu LinuxPHP, WordPress, Symfony, Docker, docker-compose, Slack, Carles Mateo Python teaching classes, Docker Combat Guide book, WinRAR compressor, Fun / Jokes / Memes, WinRAR, Starlink, Fun, Zoom, WordPress Templates, Automating and Provisioning to Amazon AWS using boto3 SDK for Python 3 book
Python Combat Guide published1,1072020-05-04 06:35:10Software development, News for the blog, Python, BooksPython, Python 2.7, Python 3.6, Python Combat Guide
News for the blog, upwards and onwards1,1032020-03-06 11:22:35News for the blogSSL
Graphical programs I use usually in Linux1,0922021-05-19 01:06:44Ubuntu LinuxUbuntu, Linux, Ubuntu 20.04 LTS
Web Top - Displaying top with Python 3 Web Server and Carleslibs1,0742021-10-12 22:20:00Web development, PythonWeb Development, top,, Python 3, carleslibs
News from the blog 2021-09-071,0572021-09-07 16:27:22News for the blog, Python, BooksFirewall, Python Combat Guide, Learn Python, Carles Mateo Python teaching classes
The Ethernet standards group announces a new 800 GbE specification1,0542020-04-11 21:10:18Amazon EC2, Bandwidth, Operation costs, Virtualization, Performance, DigitalOcean, Software development, DevOps, Google Compute Engine, Docker Containers, Databases, MySQLCloud providers, Gigabit, Memcached, Redis, iostat, RAID, NVMe, Dock, IOC
News from the blog 2021-10-101,0402021-10-10 10:00:00Virtualization, Docker Containers, News for the blogPython, carleslibs, Docker Combat Guide book, Nvidia,, Hackaton, PoC (Proof of Concept)
News from the Blog 2022-02-221,0182022-02-22 22:22:00Software development, Docker Containers, News for the blog, Security, Python, ZFS, PHP, Unit Testing, Ubuntu Linux, Videogames, CDNDoS, Security, ZFS, OpenZFS, HP, WFH - Work from Home,, Unit Testing, carleslibs, Blizzard, Zoom, APIs, Video games, Quizz Games, CloudFlare, OpenShot Open Source Video Editor, Hackerrank
Renewing a SSL Certificate for Apache2 in Ubuntu 20.041,0042022-03-13 16:25:37Web development, OperationsSSL, Ubuntu 20.04 LTS, Apache httpd, TLS, OpenSSL
News from the blog 2021-02-109782021-02-10 10:10:00News for the blogGoogle Cloud, Windows 10, ZFS, Python Combat Guide,, DevOps, swappiness
Creating Jenkins configurations for your projects9632021-04-05 18:19:00Software development, Operations, DevOps, SREDocker, Dockerfile, Jenkins, Jenkinsfile
Remote working is here9542020-03-13 15:32:00Living abroad, Updates from Carles, ReflectionsRemote Work
Cloning a Windows Application running in Wine9392021-05-13 13:23:56Troubleshoot, VirtualBoxLinux, VirtualBox, Wine (Windows Emulator), Spaces in code and filenames, Windows registry
I cancelled my Amazon Prime subscription9352020-03-29 18:48:47Reflections, BusinessAmazon, COVID-19, Amazon Prime, Delivery, Logistics, Netflix
Firsts steps programming in Python 3 with PyCharm and Git9262022-03-14 19:42:47Pythongit, PyCharm,, #100Devs, #100DaysOfCode
News from the blog 2022-03-228792022-03-22 11:40:38News for the blog, Updates from Carles, PythonAmazon EC2, Python, Python Combat Guide, JavaScript, Python 3, Amazon Python SDK boto3, Automating and Provisioning to Amazon AWS using boto3 SDK for Python 3 book, Humor, Ukraine
Blocking some offending Ip's easily with Ubuntu ufw8312020-03-19 22:55:14Operations, Securityiptables, Firewall, Ubuntu, ufw
Some tips for Diablo 2 Resurrected game8312021-10-16 23:07:41VideogamesVideogame: Diablo 2 Resurrected
A live session refactoring and adding Unit Testing to my Python3 project cmemgzip8192021-03-01 18:10:00Python, Unit TestingPython 3, cmemgzip, pytest, Unit Testing, Refactor
My Sites are under Maintenance8062021-10-30 18:16:26Amazon EC2, Web development, DigitalOcean, NoSql, Operations, DevOps, Google Compute Engine, Docker Containers, News for the blog, Updates from CarlesIaC Infrastructure as Code, EOL
A simple example to grab the title of a page using Python and beautifulsoup47882022-02-10 12:43:40Web development, PythonPython Combat Guide, Python 3, Python 3 Exercises for Beginners
Datacenters, D&R and coronavirus7802020-03-28 15:59:54Data Centers, Hardware, Rack Servers, Cloud providers, ReflectionsCloud providers, Disaster and Recovery (D&R), Data center, COVID-19
A simple Python script to get the date and time in Unix Epoch and in local time7622022-03-07 14:36:28PythonPython 3, Unix Epoch
Solving problems when updating to GNS3 last version, running with VirtualBox7612022-01-19 12:04:30Troubleshoot, Casual tech, Windows 10 Pro, VirtualBoxVirtualBox, GNS3
Some tips for beginners at Elden Ring7042022-04-02 10:35:34VideogamesVideo games, Video game: Elden Ring
Microservices vs. Service Based Architecture6792021-06-05 21:22:04Software development, Microservices, Books, Service-based ArtchitectureWeb Development, Microservices, Web Services, Mark Richards, Fundamentals of Software Architecture book, The monolith
Working on a Sudoku Solver in Python (Source Code)6152022-04-26 16:27:48Software development, Algorithms, PythonPython 3, Unit Testing, Refactor, colorama Python package, Code Review, Sudoku
Front End (Beginners): Check if an AJAX request is made6042022-03-29 09:51:21Web development, JavaScriptWeb Development, FrontEnd, HTML, JavaScript, AJAX, jQuery, Browser: Web Developer Tools
News from the blog 2022-04-225552022-04-22 17:47:01Software development, News for the blog, Python, PHP, CDigitalOcean, Java, Symfony, CSS, Humor, C++, Radio America Barcelona, ASCii Table, Sant Jordi
Why I think in Python is not a good idea to raise exceptions inside your methods5322022-05-02 13:19:58Software development, Python, PHP, Java, Unit TestingJava, Python 3, carleslibs
May the 4th be with you :)5102022-05-04 12:17:59UncategorizedDisney+, Star Wars, May the 4th, May the Force be with you
A super simple HTML jQuery JavaScript to hide a text4992022-04-18 15:20:43Web development, JavaScriptFrontEnd, HTML, JavaScript, jQuery
RAB El nou món digital 2022-05-02 [CA]4822022-05-01 16:38:22Business, Videogames, Carles Mateo in the News, Radio, ConferencesNetflix, Star Wars, Starlink, RAB - Ràdio Amèrica Barcelona, RAB programa El nou món digital, Nintendo Switch video games
Testing length of Linux ext3/ext4 and ZFS file names with Python 34762022-04-16 15:09:06Python, Ubuntu LinuxZFS, Python 3, carleslibs, ext4 Filesystem, ext3 Filesystem, colorama Python package, ASCii Table, Encoding
RAB El nou món digital 2022-05-09 [CA]4712022-05-06 15:23:10Updates from Carles, Business, Videogames, Carles Mateo in the News, Radio, ConferencesStarlink, RAB - Ràdio Amèrica Barcelona, RAB programa El nou món digital, Electric Vehicles (EV), Google Stadia, Playstation Now, Amazon Prime Gaming
RAB El nou món digital 2022-05-16 [CA]4592022-05-15 15:07:07Carles Mateo in the News, Radio, ConferencesLibreOffice, Video game: Elden Ring, RAB programa El nou món digital, Android, iPhone, EA Electronic Arts, Video game: Minecraft
News from the blog 2021-09-204232021-09-20 06:00:00Amazon EC2, Cloud providers, Docker Containers, News for the blog, Python, Books, Amazon CloudAmazon EC2, Cloud providers, Snapshot, Docker, Amazon AMI
Released Python CarlesLibs version 0.99.24192021-08-27 21:32:15Updates from Carles, PythonPython, Python 3.6, carleslibs
News from the Blog 2022-05-223992022-05-22 23:21:27Storage, News for the blog, MDRAID, Carles Mateo in the News, Radio, Conferences, Erasure CodingErasure Coding, Python Combat Guide,
Sorting an Array of Tuples in Python3922022-05-31 12:16:20Software development, Algorithms, PythonPython Combat Guide, Python 3, Python 3 Exercises for Beginners
Twitch Stream about ZFS, zpool scrubbing, Hard drives, Data Centers, NVMe, Rack Servers...3682022-06-06 14:39:33Bandwidth, Operation costs, Hardware, Rack Servers, Performance, Cloud providers, Operations, Storage, ZFS, Ubuntu Linux, Carles Mateo in the News, Radio, Conferences, Erasure CodingSSD, ZFS, OpenZFS, 4U90, 4U60, NVMe, zpool, Cold Storage
RAB el nou món digital 2022-05-23 [CA]3492022-05-22 21:21:35Carles Mateo in the News, Radio, ConferencesRAB - Ràdio Amèrica Barcelona, RAB programa El nou món digital
Fixing the problems installing napalm-base in Ubuntu 20.04 LTS3452022-05-30 18:26:22Troubleshoot, PythonPython 3, pip, Python package napalm-base
RAB el nou món digital 2022-05-30 [CA]2892022-05-23 16:01:34Carles Mateo in the News, Radio, ConferencesRAB programa El nou món digital, Costa Rica, Scam
RAB El nou món digital 2022-06-08 [CA]2882022-05-30 15:21:05Carles Mateo in the News, Radio, ConferencesStar Wars, RAB - Ràdio Amèrica Barcelona, RAB programa El nou món digital
RAB El nou món digital 2022-06-13 [CA]2662022-06-11 11:50:24Carles Mateo in the News, Radio, ConferencesVR - Virtual Reality, Zoom, RAB - Ràdio Amèrica Barcelona, RAB programa El nou món digital, Google Stadia, Sony Playstation, Heroine Women in Tech
RAB El nou món digital 2022-06-27 [CA]2432022-06-20 21:31:22Carles Mateo in the News, Radio, ConferencesRAB programa El nou món digital
RAB El nou món digital 2022-06-20 [CA]2072022-06-13 15:41:53Carles Mateo in the News, Radio, ConferencesRAB programa El nou món digital, NFT - Non-fungible Token
RAB El nou món digital 2022-07-04 [CA]2032022-06-27 15:19:40Carles Mateo in the News, Radio, ConferencesRAB programa El nou món digital
RAB El nou món digital 2022-07-11 [CA|EN]2022022-07-04 16:35:59Carles Mateo in the News, Radio, ConferencesRAB programa El nou món digital
Fixing the Error Can't locate IPC/ in @INC in CentOS 7.51462022-06-21 22:40:32Operating Systems, CentOSCentOs, Perl, Linux
How to deploy a DigitalOcean droplet (instance) and use userdata1302022-06-25 23:08:27Cloud providers, Digital OceanCloud providers, DigitalOcean,, userdata, Cloud Init
News from the Blog 2022-06-221262022-06-24 13:37:15Hardware, Rack Servers, Software development, Operations, News for the blog, VMwarePython, Firewall,, carleslibs, Carles Mateo Python teaching classes, Twitch, Streaming
Install jenkins on Docker in ubuntu in 4 minutes1112022-06-26 22:19:20DevOps, Docker Containers, Ubuntu Linux, CI/CDDocker, Dockerfile, Jenkins
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