About

Lorem ipsum dolor sed do eiusmod tempor incididunt sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam.

Was
Im Rahmen unserer Bestrebungen den Cluster zu verbessern, haben wir mittlerweile einen zweiten ZEO Server aufgesetzt. Die Frage ist nun, wie man einen Spiegel des Originaldatenbestandes herstellt, der im Falle eines GAU einspringen kann.
Warum
Welche Frage: 24/7 ermöglichen und den Stress für die Administration minimieren.
Wie
Das “spiegeln” von ZODB für das WISE teilt sich in zwei […]

read more...


26
Mai

WISE 1.3 ZEO Installation

Posted by Jörg Bartels, in WISE 1.3, deutsch, Clustering

siehe auch  http://tide.act.nato.int/mediawiki/index.php/ZEO

WISE 1.3 installiert
In den Ordner c:\programme\wise\zope wechseln, dort python.exe c:\programme\wise\zope\zope\bin\mkzeoinstance.py c:\programme\wise\zope\zeoserver 8888
eingeben
In der Systemsteuerung den zope/wise Dienst stoppen
Die data.fs von
C:\Programme\WISE\data\var nach C:\Programme\WISE\zope\zeoserver\var
kopieren
Die Datei
C:\Programme\WISE\zope\zeoserver\bin\runzeo
in
runzeo.bat umbenennen und editieren:

Den Eintrag INSTANCE_HOME ersetzen durch $ZEOINSTANCE
Unter ZOPE_RUN den Eintrag Zope\Startup\run.py durch ZEO\runzeo.py ersetzen
Unter CONFIG_FILE den Pfad anpassen c:\zope\instance\zeoserver\etc\zeo.con

Die Datei c:\Programme\wise\zope\bin\zopeservice.py in zeoservice.py umenennen und anpassen

Den Eintrag INSTANCE_HOME anpassen (C:\Programme\WISE\zope\zeoserver)
Den […]

read more...


As mentioned before, we are trying to cluster 2 (rendering) WISE Servers working onto one central ZODB. The tool in use to enable this on the ZOPE Level is Zope Enterprise Objects.
Just before I take of: If you try this and follow the How2, do yourself a favor and start of with:

a. a clean database […]

read more...


07
Mai

Das Laster mit dem Cluster

Posted by michaelmaass, in deutsch, Clustering

Die Ehrlichkeit gebietet es, auch von Vorhaben zu berichten, die nicht so gut laufen wie gewohnt.Wie schon vormals berichtet birgt der hohe Anspruch, eine WISE 1.2R2 Installation zu Clustern einige Überraschungen.Zunächst stellen wir fest, dass der wiederholte Hinweis auf die I/O lastigen Operationen eines WISE Servers ernst zu nehmen ist.Auch in der Originaldokumentation der NATO […]

read more...


07
Mai

Indians on a short leash

Posted by michaelmaass, in Clustering

While putting our content on the cluster we discovered a metaphysical cottonball about apaches keepalive setting.
……..First, disable keep-alive. This is the nastiest thing against performance. It was designed at a time sites were running NCSA httpd forked off inetd at every request. All those forks were killing the servers, and keep-alive was a neat solution […]

read more...


30
Apr

TIDE Sprint 08

Posted by michaelmaass, in Clustering

Embeded into the TIDE SPRINT 08 in Elde (NL) was one day of “operational use of WISE”.
We met with the “Makers” and discussed some of the neccessary changes within the 1.3 Functionalities to improve reliability and stability of a WISE based Information Architecture. Some of which I tend to discuss in this place.
It was a […]

read more...


12
Apr

06th Feb 2008
Ongoing testing reveiled a supposed problem with the transfer of fileobjects and images over a ZEO link into a ZEO Server based Storage area.
After a little frustration and an E-Mail to David C., describing the Situation and asking for guidance, our team at Gluecksburg found a solution.
The laid out procedure takes care of […]

read more...


12
Apr

Cluster Frust 2

Posted by michaelmaass, in Clustering, Allgemein

Michael
You have got it correct, and seem to know as much as us now!.
The files are not stored in the ZOPE database, this is because ZOPE only handles a limited number of connections at a time.
Large file downloads over slow network connections tended to lock up the whole server.
Since this became the primary use of […]

read more...


12
Apr

Cluster Frust

Posted by michaelmaass, in Clustering, Blogroll, Allgemein

Michael Maass wrote:
Hi
As envisioned we (aka our team in Germany and me in Florida) did some testing, clustering WISE.
We encountered some difficulties we are presently not able to resolve due to a lack in understanding the WISE mechanics.
Situation:
We set up a testing environment with

initialy two machines, Windows 2000 Client /2003 Server
WISE 1.2R2 […]

read more...


09
Apr

klebende Sitzungen

Posted by michaelmaass, in Clustering

Liebes Tagebuch….
Zur Zeit arbeiten wir am Clustern von 2 + n WISE Servern in einer Windows Umgebung. Die dabei auftauchenden kleinen Problemchen haben wir in den letzten Wochen und Monaten nach und nach gelöst.
Es verbleiben Aufräumarbeiten und die Feinabstimmung der Migrationsplanung.
Ein Thema das uns beschäftigt hat waren die sog. sticky Sessions. Der Nutzer soll nach […]

read more...