Architectures

What Job Offers Tell About Architectures #5

Part 5 of the Unix/Linux system administrator job offer and technologies survey. Here are several new companies. This time watch out for "or's" in the table and the order of the alternative which might give an indication what the employer uses and what knowledge he deems equivalent. Also keep in mind that such "or's" indicate once more that each position might describe only wishes, but not that actual architecture the company uses. It depends on how open they want to be...

If you want to check for yourself click the "[src]" for the original reference, but know that it might be already offline.

Todays List

Company Sector Reference OS Languages Databases Software Hardware Monitoring Virtualization Automation
allesklar meinestadt.de Internet: Web [src] Linux MySQL, Postgres, Cassandra DB HA and Loadbalancing
Xing Social [src] Java, Scala ElasticSearch or (Lucene or Solr) Haadop, HBase, Cassandra
Hanwha Q Cells Industry [src] AIX System P, Storages, Tape
buch.de Online Store: Books [src] Redhat Apache, Tomcat, Redhat Satellite SAN yes
goodgame Studios Gaming [src] Debian, Redhat Shell MySQL Apache, Postfix Nagios, Munin, Icinga
International Algorithmic Trading GmbH Finance [src] Redhat, CentOS, Scientific Linux Bash, Perl yes
Lidl Online Store: Food [src] Redhat Shell MySQL VMWare
EOS UPTRADE GmbH Internet [src] Debian, CentOS PHP MySQL Cisco FW, Watchguard Icinga XenServer, VMWare Cloud Puppet

The Interesting Things

Well this is the first time I see someone using Scientific Linux. As with the previous posts automation doesn't seem to play a big role as only 2 out of 8 mentioned it. Also no startupish devops style offers here as the scripting languages seem to indicate. It seems to be just good old robust Unix administration :-)

And look at Q Cells, no wonder they went bankrupt using IBM hardware...

Note: You can find the complete index of all companies I checked so far here:
What Job Offers Tell About Architectures.

What Job Offers Tell About Architectures #4

Part 4 of the Unix/Linux system administrator job offer and technologies survey. Here are several new companies. Note that some positions are actually developer positions. I chose those because they still told much about the software stack used. Check the "[src]" for the original reference, but know that it might be already offline.

Todays List

Company Reference OS Languages Databases Software Hardware Monitoring Hosting Automation
Brose [src] AIX, Linux, Windows HA ABAP Oracle, MaxDB SAP - - - -
DATEV eG [src] - Java, Javascript DB2 J2EE, DOJO, JUnit, Mockito - - - -
DATEV eG [src] z/OS Cobol, Java, Javascript DB2, VSAM - - - - -
Elektrobit Automotive GmbH [src] Unix Java Oracle Tomcat, WebSphere, Spring, Eclipse RCP - - - -
Actano GmbH [src] Win, Mac OSX, Linux - MSSQL, Oracle, MySQL Firewall, Exchange - Nagios, Centreon vSphere, HyperV, AWS, Profitbricks -
Ratbacher [src] AIX, Linux - DB2, Oracle Tivoli Storage Manager IBM Power - - -
United Experts [src] Debian Lenny, Squeeze, Wheezy - MySQL, Postgresql Haproxy, Apache, Tomcat Network HW, Blades, Storages Nagios, Munin, Icinga, Zabbix Xen, KVM -
Texas Instruments [src] Solaris, Linux Shell, Python, Perl Oracle - x86 and SPARC HW components, Blades, SAN, NAS - - -
Media Saturn [src] Unix - - Tomcat, Citrix, Cluster, ITIL - - - -
easyCash [src] Linux, AIX Shell - Apache, Tomcat, JBoss, Weblogic, ITIL - Nagios - -

The Interesting Things

Nothing unexpected really. Well, except noone seems to use automation. All offers look very serious, as non-startup-like businesses should! Among them several AIX users and even a z/OS position offered by German tax services provider DATEV.

Note: You can find the complete index of all companies so far here: What Job Offers Tell About Architectures.

What Job Offers Tell About Architectures #3

Part 3 of the Unix/Linux system administrator job offer and technologies survey. Here are 8 new companies:

Todays List

Company Reference OS Languages Databases Software Hardware Monitoring Hosting Automation
Sunbeam GmbH [src] Debian, CentOS PHP MySQL Typo3, Piwik, Mantis, OpenX - - OpenVZ -
Air Berlin [src] Windows - Oracle 11g, MS SQL 2008 - - - - -
BearingPoint [src] Unix, Linux Shell, Java Oracle Apache, Tomcat - - - -
COC AG [src] Unix, Linux, Windows Server - ADS - - - VMWare, MS, Citrix -
dm Pharmacy [src] RHEL, Window Server 2008 Shell, Ruby, Java Varnish, Apache, JBoss, Tomcat - - - VMWare Chef or Puppet
Groupon GmbH [src] Linux - MySQL, Postgres Apache, Tomcat, Hudson, Jenkins, LDAP - - vSphere, VirtualBox cfengine2/3, Puppet
HUK-Coburg Insurance [src] - - DB2 DWH - - - -
InVision AG [src] Linux - Postgres, MySQL, Redis - - - - Chef, Puppet, Capistrano

The Interesting Things

Well none of the above companies needs monitoring :-)

And GroupOn is one of the few companies so far asking for cfengine. And for me the first time I heard about capistrano (requested by Invision AG). The github repository tells it is a:

"Remote multi-server automation tool http://www.capistranorb.com"

implemented in Ruby modelled from the Rake DSL. I'm worried that I missed this so long as it seems to be quite popular on github.

Note: You can find the complete index of all companies so far here: What Job Offers Tell About Architectures.

What Job Offers Tell About Architectures #2

It is time for another round of having a look which technologies companies announce with job openings for system administrators.

Todays List

Company Reference OS Languages Databases Software Hardware Monitoring Hosting Automation
1&1 Shared Hosting [src] Debian Perl, Bash - Apache, DRBD, Debian Packaging - - - -
1&1 Virtualisation [src] Linux Perl, Python - - NAS, SAN, iSCSI, NFS - VMWare, Xen, KVM, OpenStack, OpenNebula -
1&1 Monitoring [src] Linux, Windows Server Java, C/C++, Perl, Bash, Ruby - - - - - -
1&1 [src] Linux Perl, Bash, Python MySQL, Oracle, NoSQL Apache, Tomcat, Java - - - -
1&1 [src] Linux Java - Apache, Tomcat, JBoss - - - -
1&1 gmx.de web.de [src] Linux Perl, Bash, Python MySQL, Oracle, NoSQL, Cassandra - - - - Puppet
buch.de [src] - - MySQL, MS SQL DRBD, heartbeat - - - -
First Colo [src] Linux Bash, PHP, Perl, Python Postgres, MySQL - Cisco, Juniper - - -
IKB Bank [src] SLES 10/11/12, Solaris 8/10 Bash, Perl Postgres, MySQL - Fibre Channel SAN, Storages: EMC, HP, IBM - - -
s'Oliver [src] AIX - - SAP, Tivoli TSM IBM SAN - PowerVM -

The Interesting Things

Well as you can see a lot of 1&1 offers. With 1&1 being on of the large successful German ISPs running the leading mail portals GMX and Web.de it is interesting to see their technology requirements. They seem to be focussing on Java, MySQL and Oracle with NoSQL and Apache Cassandra being the youngest startup-ish tool used. So for me 1&1 makes a somewhat old-school impression, which of course is not necessarily bad. As they indicate no standard monitoring solution I guess they use a proprietory or commercial solution.

What I found noteworthy about the other companies is the usage of DRBD. It's more commonly used than I'd expect so far.

Note: You can find the complete index of all companies so far here: What Job Offers Tell About Architectures.

Large Website Technology Changes in October 2013

Last month I did a first indexing of mostly request header, HTML and DNS based information about the top 200 sites listed by Alexa and the top 100 German websites. All the information is freely available and extracted from the website responses.

The detailed results can be found here:

What Changed In A Month?

Now roughly a month later I repeated the scan to see what changes do happen and what trends might be noticable:

DNS-Prefetching THE HTML header based DNS prefetching is spreading. Two of the large adult content sites added it and Chinese search engine baidu.com introduced it too. As in my experience it provides a small but measurable latency improvement on many sites I'd guess usage will further spread...

Added by baidu.com, pornhub.com, tube8.com, www.wer-kennt-wen.de
Removed by taobao.com

IPv6 IPv6 support did not spread in the last month. Just two sides that dropped their AAAA records.

Removed by www.mail.ru, www.volkswagen.de

Varnish One of the most significant changes is more and more sites announcing the usage of Varnish as a cache. This is sometimes combined with a CDN, sometimes without.

Introduced by bbc.co.uk, www.otto.de, www.pinterest.com, www.wikipedia.org

Hiding Server Version Two more websites are now hiding their Apache version.

Removed version now: www.weibo.com, www.ftd.de

XSS Header XSS headers are not widely spread. No real change in adoption.

Added by www.craigslist.org
Removed by www.pinterest.com

Caution!

All the results listed above are based on a simple scanning script. The results present a snapshot of the websites and a single response only. This is of course not necessarily an indicating for what techniques the site uses in daily operations!

Learning from Job Offers

Every other day you get one, fly over it and delete it. In a way each time it says exactly the same. Or does it?

Surely the different companies you read job offers from are using different technologies. Actually when announcing the position they are at their weakest time. They have to admit which technologies they use, how heterogenous they are and sometimes how old-style they are.

I think I'll from time to time compile some positions available online (not offers I got!) of mostly German and maybe more Berlin located companies and add them to an ever growing list "What Job Offers Tell". Below you find the first 10 company offers with their data.

Todays List

Company Link OS Languages Databases Software Hardware Monitoring Hosting Automation
Fraunhofer HHI [src] Ubuntu, Redhat, Debian C# - Windows AD, Windows Terminal Server, DFS Fibre Channel - vSphere 5 -
Idealo.de [src] Debian, Redhat - - - - Icinga, Cacti, NewRelic - -
Idealo.de [src] Debian - NoSQL, MongoDB LAMP - Nagios, Zookeeper, Corosync KVM -
KPMG [src] Windows Server 2003/2008 - MS SQL 2005/2008, SQL BI MS IIS - - - -
Lusini.de [src] Linux Node.js MongoDB nginx, Varnish, Elastic Search - NewRelic - Puppet, SaltStack
maxdome.de [src] Redhat PHP MySQL, Postgres, Redis, CouchDB Tomcat, JBoss, Apache, nginx - - Cloud Puppet, Foreman, Chef, Rex
Springer Online [src] CentOS, Redhat Bash, Python, Ruby MySQL, Postgres, MongoDB Apache, HaProxy, JBoss, Tomcat, Nginx, Varnish F5, Cisco Icinga, Graphite KVM, VMWare, Xen, AWS chef, Puppet
Teufel [src] Windows Powershell, Bash Exchange - - - VMWare, Hyper V chef, Puppet
T Systems [src] Linux Shell, Perl, PHP MySQL, Oracle heartbeat, DRBD, Apache, Tomcat, JBoss, Weblogic - - - -
Zalando [src] Windows - - MS ADS SAN - - -

The Interesting Parts

It gets interesting where positions go into details like with T-Systems using heartbeat and DRBD or Springer mentioning the real-time graphing engine Graphite. I also like maxdome using four different automation tools: Puppet, Foreman, Chef and Rex. That's two to many. A more exotic thing is Idealo.de using Apache Zookeeper, or is it more common than I think?

On the other hand some other candidates either have no automation needs, or the lack of hints indicates self-made automation or none at all.

Stay tuned for the next set of companies!

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