X-Git-Url: https://codewiz.org/gitweb?p=wiki.git;a=blobdiff_plain;f=SystemAdministratorRole;h=27c04472da5a3df056ab26bcc46c69d16043f695;hp=6bde0ed982fd7fa306d07ab9c7b5ac7792b5fef5;hb=712d2190d11f1ac7091841a98a44c8a99a472f5b;hpb=d1cf4ba3d8bc4a3a1e4f4986a1ceb80647cb89d5

diff --git a/SystemAdministratorRole b/SystemAdministratorRole
index 6bde0ed..27c0447 100644
--- a/SystemAdministratorRole
+++ b/SystemAdministratorRole
@@ -3,7 +3,7 @@
 I've been taking care of boxes since my first job as an
 EmployedWorker and in the '90s I've been providing free
 telecommunication service to a total of 450 registered
-users with my own BullettinBoardSystem called SystemShockBbs.
+users with my own BullettinBoardSystem called [[SystemShockBBS]].
 
 I've been using a wide variety of different OSes, see
 SystemArchitectRole for a list.
@@ -13,54 +13,55 @@ SystemArchitectRole for a list.
 I've designed and helped implementing the following
 production systems, all of which are still in service:
 
- * **SugarLabs**'s Internet infrastructure -- I'm coordinator
+ * **SugarLabs's Internet infrastructure** -- I'm coordinator
  of the [[http://sugarlabs.org/go/InfrastructureTeam | Infrastructure Team]],
- taking care of 8 machines hosted at variois locations and running
+ taking care of 8 machines hosted at various colocation facilities, running
  development and support services for a large community.
 
- * '''DevelerCompany's IT infrastructure''' - Leveraging
- my earlier work for SiriusCompany, for over 6 years I've
- been continuously growing and restructuring the network,
- the servers and their intricate mesh of services and
- support scripts.  The main server, called {{trinity}},
- contains 1TB of storage and offers file storage, user
- authentication, e-mail, and many web-based services to a
- highly heterogeneous and complex environment comprising
- several versions of Linux, MacOsX and Windows clients.
- Another server, called {{asterisk}}, acts as a VoIP PBX
- and secondary slave for many (but not all) of {{trinity}}'s
- services.
+ * **[[http://fsf.org/ | Free Software Foundation]]'s virtualization infrastructure ** --
+ I've been the fall system administrator intern in 2009. My main job was to set up and
+ evaluate a **high-availability virtualization cluster** with 2 nodes based on
+ [[http://www.xen.org/ | XEN]] and [[http://www.drbd.org/ | DRBD]].
 
- * '''http://www.fieremostre.it/''' - A cluster of 4 RedHat
- servers, two web frontends and Java appservers and two
- database and filesystem backends with hw SCSI RAID5.
+ * **DevelerCompany's IT infrastructure** - For over 6
+ years I've been continuously growing and restructuring
+ the network, the servers and their intricate mesh of
+ services and support scripts.  The main server, called
+ ##trinity##, contains 1TB of storage and offers file storage,
+ user authentication, e-mail, and many web-based services to a
+ highly heterogeneous and complex environment comprising several
+ versions of Linux, MacOsX and Windows clients. Additional servers
+ act as VoIP PBX and secondary slave for many (but not all) of
+ ##trinity##'s services.
+
+ * ** [[http://www.fieremostre.it/ | Fieremostre (Milan)]] ** - A cluster of 4 RedHat
+ servers, two web front-ends and Java appservers and two
+ database and filesystem back-ends with SCSI RAID5.
  Fully managed remotely, including power fencing and
  robotized tape juggler.
 
- * I've configured and installed a cluster of 5 nodes on
- blade CPU boards with shared fiber-channel RAID storage.
- I used a pre-release of RedHat's Advanced Server product
+ * In 2003, I configured and installed a cluster of 5 nodes on
+ blade CPU boards with **shared fiber-channel RAID storage**.
+ I used a pre-release of **RedHat Advanced Server**
  to implement a shared storage pool of 1.5TB with GFS1.
  The system initially went to production without the GFS
  pool because of reliability concerns with this new
- technlogy.
+ technology.
 
- * '''Genexpress Lab''' - A combo of two servers, each
- acting as a gateway and file server for a security ring.
- This design was done for the Department of Bioengineering
- of the University of Firenze, in Prato's Scientific Center.
+ * **Genexpress Lab** - A combo of two interconnected servers, each
+ acting as a gateway and file server for a security ring. This design
+ was done for the Department of Bioengineering of the University of
+ Firenze, in Prato's Scientific Center.
 
-My philosophy is using mainstream hardware whenever possible
-and concentrate most services on few phisical systems.
-The savings in cost can be used to increase availability and
-performance through redundancy.  This strategy leads to
-datacenters that are easy to understand and maintain, while
-at the same time scaling up much better than
-traditional asymmetrical solutions (like web server,
+My philosophy is using mainstream hardware whenever possible and
+concentrate most services on few physical systems. The savings in
+cost can be used to increase availability and performance through
+redundancy. This strategy leads to data-centers that are easy to
+understand and maintain, while at the same time scaling up much
+better than traditional asymmetrical solutions (like web server,
 mail server, db server...).
 
-Being fond of UNIX culture, I tend to keep my systems as
-open as possible and at the same time very secure.
+Being particularly fond of the UNIX culture, I tend to keep
+my systems as open as possible while at the same time very secure.
 
 TODO: add a list of server software I use/know
-