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Hayden James
Lives in Las Vegas
201 followers|744,157 views
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Hayden James

Tips & Tricks  - 
 
Checking disk I/O with top, atop and iotop.
If your Linux server is bogged down, your first step is often to use the TOP command in terminal to check load averages and wisely so. However, there are times when TOP shows very high load averages even with low cpu 'us' (user) and high cpu 'id' (idle) percentages. This is the case in the video below, load averages are above 30 on a server with 24 cores but CPU shows around 70 percent idle. One of the common causes of this condition is disk I/O ...
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Hayden James

Training/Tutorials/HOWTO  - 
 
Last update Nov 2nd 2016: Included quick dd commands to check cached vs uncached disk read performance. There are several Linux benchmarking tools available. However, this article will highlight using the 'dd' Unix command for a quick overview and benchmark of your Linux server or VPS. 'dd' requires no downloads and can quickly alert you to any performance bottlenecks and/or indicate if there's a need for additional benchmarks using more complex ...
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Hayden James

Training/Tutorials/HOWTO  - 
 
Using 'dd' commands for very quick view of your web server's hardware performance. Paste your results, specs and name of web host...
Last update Nov 2nd 2016: Included quick dd commands to check cached vs uncached disk read performance. There are several Linux benchmarking tools available. However, this article will highlight using the 'dd' Unix command for a quick overview and benchmark of your Linux server or VPS. 'dd' requires no downloads and can quickly alert you to any performance bottlenecks and/or indicate if there's a need for additional benchmarks using more complex ...
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Peter Robertson's profile photoIoan's profile photo
2 comments
Ioan
 
I feel like writing 0's is cheating a bit especially in the hash test 
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Hayden James

Security  - 
 
Dyn, the target of a massive DDoS attack on Friday that took down popular sites like Netflix and Twitter, said the attack "sophisticated" attack involved "10s of millions of IP addresses."
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Hex Static's profile photoValdis Klētnieks's profile photoHayden James's profile photoAndrew Warren-Love's profile photo
17 comments
 
+Hex Static In case you're in the market, I have a decent supply of tin foil hats.
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Hayden James

Your Suggestions  - 
 
Guest post by James Paden, Partner at Instrumental At Instrumental, we often talk about getting started with monitoring. In the past, we’ve covered the critical, but basic, metrics everyone needs on our Ultimate Monitoring Metrics Cheatsheet (many of which are gathered by out-the-box system and service monitoring). We also wrote the Quick-Start Guide to Monitoring Your Application, which discussed initially monitoring: Your test suite Your featur...
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'Jə - 'ə''s profile photoHayden James's profile photo
2 comments
 
haha true. That happened to me a week ago. You can't monitor much without a monitor.
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Hayden James

Fun / Chat / New Users ...  - 
 
Saw this on Wikipedia. The first Linux Smartwatch was presented at IEEE ISSCC 2000, Feb 7th 2000, where Steve Mann was named "the father of wearable computing".

Are there any Linux smartwatch options today?
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Jared Decker's profile photo'Jə - 'ə''s profile photoChris Sullivan's profile photo
17 comments
 
+'Jə - 'ə' well I'm straight. Ha ha , that's a joke.
GNUX pronounced G-nux.
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Hayden James

Training/Tutorials/HOWTO  - 
 
A quick guide using top, atop and iotop to confirm if disk I/O is slowing down application performance... 
If your Linux server is bogged down, your first step is often to use the TOP command in terminal to check your server's load averages, and wisely so. However, there are times when TOP shows very high load averages even while your cpu 'us' (user) and 'id' (idle) percentages are low. This is the case in the video below, load averages are above 30 on a server with 24 cores but CPU is showing around 70% idle. One of the common causes of this conditio...
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Hayden James

Training/Tutorials/HOWTO  - 
 
Another reason why Nginx rocks! However, if you are using Apache (maybe for compatibility reasons or preference) you should disable .htaccess. Espcialy if you would like Apache 2.4 mpm worker or event to compete with Nginx's throughout. #apache
About 3 years ago I wrote a short blog entry about the very basic Apache configuration mistakes and oversights which developers and server admins of the then $500 million dollar Healthcare.gov website made. Most shocking, were elemental oversights, as if devs were not aware of common best practices. Which brings us to another Apache performance related entry. A while back, I was searching the web for a performance article to forward to a VPS host...
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Martin Zeitler's profile photoHayden James's profile photoDavid Johnston's profile photo
6 comments
 
+Hayden James Somewhere it may be documented. I never came across it. But I suspect I am not alone over many years of having to redo htaccess and since it is only something you do occasionally you google for the formats and file locations and never ever has it been suggested anywhere I have encountered that you can put the htaccess rules in the conf file. If I knew that I would have been doing it all along. So a great and useful article but I'm really questioning the way apache presents basic information like this. 
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Hayden James

Questions  - 
 
Unable to export analytics to PDF. Soon fixed?

Error for the past hour:

"An Error Has Occurred
We're sorry. The service is temporarily unavailable. Please try again in a few minutes."
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Hayden James

Security  - 
 
Here’s a continuously updated list of current IoT security solutions including: Subex IoT Security, CUJO – Smart Firewall, Dojo security of things, Bitdefender BOX – IoT Security Solution, F-Secure for Home and Business and others. #IoT #security 
In the aftermath of yesterday's DDoS cyber attack on DYN's DNS servers, a few key questions arise. The most important being: How do we protect IoT devices from future compromise? DDoS attacks are not new, however DDoS attacks using IoT devices are. There are millions of these vulnerable internet ready devices connected to the internet. That number is growing rapidly with the explosion of the IoT industry (See my 'Device Health' quote). The DDoS a...
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Mike O's profile photo
Mike O
 
My preferred method is to keep all my things locally controllable with zero cloud dependence. My house, my way.
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Hayden James

Security  - 
 
How much worse could this be in the future?...
2nd Update: 3rd Attack underway. I'm just going to post this and proof read later. Update: Just as I finished writing this, I had to change the title. This is because, initially, the internet outage this morning was for the most part over. Caused by an attack 'of unknown origin' on DNS service provider DYN which took down large chunks of the internet. But DYN just announced that they are under 'attack' again. Twitter, Reddit and other sites are o...
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Hayden James's profile photoAndrej R's profile photoThomas Seaton's profile photoMassimo Luciani's profile photo
5 comments
 
With more and more IoT devices easy to access as most owners don't change their default passwords things might become really ugly.
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Hayden James

General Discussion  - 
 
81% (actually now its 87% as of Q2 2016) of all Smartphones are powered by Linux...
Update: Now 87% as per new 2016 report. No, I didn't use a misleading blog title. Smartphones powered by Linux are in fact dominating the smartphone market. A few of you may be scratching your heads at this point (stop that, you'll go bald) while others are filled with that 'Sound of Music' - 'The Hills are Alive!' kind of Linux pride! Read on and I'll provide some pudding, filled with proof that 81% 87% of all Smartphones are powered by Linux. V...
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Work
Occupation
Linux Systems Administrator | DBA
Skills
Amazon EC2 Management, CDN (Content Delivery Networks), Capacity Planning, Cloud Management, Consultancy, Control Panels, DNS, Kernel Customization, Load Balancing, Monitoring, Networking, No Downtime Migration, Operating Systems, PCI DSS Compliance, Proactive Response, Project Management, Recovery, Script Installations, Vulnerability Scanning, Web Applications (WordPress, Magento, Drupal, vBulletin, etc). Apache, APC, Bind/Named, Cacti, ClamAV, Courier, Dovecot, eAcelerator, Exim, Iptables, Lighttpd, Litespeed, Memcached, Mod_Security, MySQL, Nagios, Nginx, OPcache, OpenVZ, Postfix, Proftpd, Pure-Ftpd, Redis, Roundcube, SELinux, Sendmail, Spamassassin, Varnish, Virtuozzo, Vsftpd, etc. cPanel/WHM, Plesk, DirectAdmin, Webmin, No Control Panel. Bash, Perl, PHP, Python, Ruby On Rails. Redhat Linux, CentOS, CloudLinux, Fedora, Debian, Ubuntu, etc.
Basic Information
Gender
Male
Other names
hydn
Story
Tagline
Linux Systems Administrator | DBA
Introduction
Please visit haydenjames.io and let's connect via LinkedIn.
Places
Map of the places this user has livedMap of the places this user has livedMap of the places this user has lived
Currently
Las Vegas
Previously
Antigua - Miami
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Other profiles
Contributor to
Hayden James's +1's are the things they like, agree with, or want to recommend.
Know Who's at the Office with the Raspberry Pi | Initial State
blog.initialstate.com

Setup a sensor-free presence detector to let you know when someone's close enough to connect to the WiFi! Know who's home and who's not.

[root] Recently - Android Apps on Google Play
market.android.com

With Android 5.0 Lollipop's release, the recents view (multitask button) became overview, and instead of showing you only actually running a

LEMP Raspberry Pi 2 download | SourceForge.net
sourceforge.net

To do: – Update my.cnf for RPi2 (1G of memory) and enable InnoDB by default. – Fix broken PHP modules. (gd, imap and mcrypt) Changelog: 09-1

Arch-WiPi | SourceForge.net
sourceforge.net

Project homepage: http://haydenjames.io/download-arch-linux-raspberry-pi-wifi-access-point-setup/ Change log 03-22-2015 – Added Raspberry Pi

WhatsApp Messenger
market.android.com

WhatsApp Messenger is a smartphone messenger available for Android and other smartphones. WhatsApp uses your 3G or WiFi (when available) to

Medico de Bateria
market.android.com

Battery Doctor (Medico de Bateria) Con más de ***150 millones*** de descargas en Android y iOS a nivel mundial. Battery Doctor (Medico de Ba

Spotify Music
market.android.com

Spotify is now free on mobile and tablet. Listen to the right music, wherever you are. With Spotify, you have access to a world of music. Yo

Spotify
market.android.com

Ahora Spotify es gratis para celular y tablet. Escucha la música perfecta donde sea que estés. Con Spotify, tienes acceso a un mundo de músi

Raspberry Pi Safe Overclocking | Hayden James
haydenjames.io

Disclaimer: My recommendations are based on testing done with various configurations on two Raspberry Pi Model B version 2 boards. Both run

Download My Arch Linux Raspberry Pi WiFi Access Point | Hayden James
haydenjames.io

Are you looking into turning your Raspberry Pi into a Wireless router? Then I've created a tiny Arch Linux ARM + create_ap based setup, pack

Gedit replacement - medit | Hayden James
haydenjames.io

If you are not using Gnome then you are probably looking for a good Gedit replacement. Have a look at medit text editor! I'm using xfce4 des

CES 2014 - Biggest CES Ever! | Hayden James
haydenjames.io

CEA announced yesterday that the 2014 CES wrapped up as the largest in show history! A record two million net square feet of exhibit space h

Dropbox
market.android.com

O Dropbox é um serviço gratuito que deixa você levar todos os seus documentos, fotos e vídeos para qualquer lugar. Depois que você instalar