December 1999 - Zope

RE: [Zope] Virtual Hosts with Apache+Zope
by Michel Pelletier 07 Dec '99

07 Dec '99

Perhaps you could add this to the Zope site so that others can read it and search through its useful information? > -----Original Message----- > From: Edin Dizdarevic [mailto:edin@ipo.de] > Sent: Tuesday, December 07, 1999 6:51 AM > To: zope(a)zope.org > Subject: [Zope] Virtual Hosts with Apache+Zope > > > > > Hello there! > <snip> -Michel

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RE: [Zope] Databases and zope
by Michel Pelletier 07 Dec '99

07 Dec '99

> -----Original Message----- > From: Alwyn Schoeman [mailto:alwyns@prism.co.za] > Sent: Tuesday, December 07, 1999 3:31 AM > To: zope(a)zope.org > Subject: [Zope] Databases and zope > > > Hi, > > Do most of the Zope products use the ZODB as a database? Most, yes. Some products are specifically engineered to use realtional databses in some useful way (like SQLSessions). > If so why? that's the architecture most choose. Object databases are better at representing structures of heterogenous objects. You can go either way, take squishdot for example, to represent the heirarchical layout of the messages, you would need to store that structure in additional rows/tables. With ZODB, the realtionship between objects is stored along with the objects. > and how easy is it to use say Postgres or MySQL > instead of ZODB for Squishdot e.g.? The application has to be specificly engineered to use ZSQL Methods. Note that ZClass classes can have ZSQL methods as class methods. -Michel

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RE: [Zope] Zope stability
by Michel Pelletier 07 Dec '99

07 Dec '99

> -----Original Message----- > From: Thomas Duterme [mailto:thomas@madeforchina.com] > Sent: Monday, December 06, 1999 8:12 PM > To: zope(a)zope.org > Subject: [Zope] Zope stability > > > Hello Everyone, > > We are using Zope for one of our sites but Zope died as of yesterday. > (refer to Chas' posts) > > This was totally out of the blue and is quite shocking. > (Zope is still > down after 24 hours) Just an aside, we do have excellent paid support. It is not unreasonably expensive and you get to talk directly to us and get a prompt report of our analysis of your problem. > The question I'd like to raise to the entire list regards > Zope's stability. > We are running Zope > integrated with Apache off FreeBSD3.2 . As far as I know, > this is not such > an exotic setup (probably not exotic at all... > rather common?). As Chas explained previously, Zope just > suddenly died. > Teodore also had the same > error occur and solved it by rebooting his server. > > How often has this occured with other people? Are there any > good solutions > regarding providing a backup > in case Zope does die? (and keep the site running) Are there > any serious > Zope instability issues which > need to be discussed and alerted? Well, good back ups and all that are an excellent strategy. Further, I almost wonder if you had a backup of the site when it didn't have this problem, if you fired a copy of that up on another port and the problem went away. As it stands now, it could be a bug in Zope, or something changed on your system. The most important part of debugging is reproduction. Reproducing the problem in a controled way can be the hardest part but it is the most important. As a stopgap so that you can get some sleep, you can set up a cron script to reset the server every now and then either nicely (call the servers manage_shutdown) or mean (send it a signal). -Michel

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RE: [Zope] Question About Additional info for AUTHENTICATED_USER
by Michel Pelletier 07 Dec '99

07 Dec '99

> -----Original Message----- > From: scott kaplan [mailto:skaplan@wso.williams.edu] > Sent: Monday, December 06, 1999 6:19 PM > To: zope(a)zope.org > Subject: [Zope] Question About Additional info for AUTHENTICATED_USER > > > Hi All, > I have a question about adding additional information to a user object > (or another way to do this) I want to have an attribute for > each user. > i.e. each user will have a subject attribute, so when they view a > certain page, only messages of that subject appear > > Since this is only one bit of info, I don't want to make a separate > permission for each subject, because that would be very un-extensible We are still working on Membership, but when we're done with it it's going to be cool. Membership gives a sort of higher order value to the user object. What you want to do here is one of our use cases for membership. For now it might be handy to check out one of the various sessions products available, perhaps you can hook the creation/desctruction of a session to make a DB query to get all of your additional user info. > So what's the best way to do this: > > 1)Do i try to hack info into the authenticated user object (A > follow-up > question is how do i go about doing this, where is that > object defined?) (h)Ack! > 2) Do i associate each user with a database entry with the > additional info > (This seems like a bit of overkill for my purposes) but pretty useful and scalable, and you can use that data in other apps if you put it in a relational db. > 3)Do i add the information into the product I am working with > (while this > would work, i am not how to insure the information between then user > folder and my product are the same) This would work, but it would be hard to maintain. -Michel

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RE: [Zope] iPlanet
by Rob Page 07 Dec '99

07 Dec '99

> Does anyone have information about iPlanet Webserver and Zope? If I understand it correctly, the iPlanet webserver is essentially Netscape Enterprise Server v4.x Zope runs well with Netscape using PCGI. However, there is a patch needed (installed as a Netscape plugin) that coerces Netscape (um, I mean iPlanet) into forwarding the REQUEST's authentication credentials into the external application (i.e., into Zope). This plugin (tested with Netscape Enterprise Server 3.6.2) is available at: http://www.zope.org/Products/NetscapePlugin HTH, --Rob

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Reload/reload/reload
by Oleg Broytmann 07 Dec '99

07 Dec '99

Hello! I have a strange problem. I went to a page (to http://sun.med.ru/Zope/, for example, but any Zope page showed the same symptom) and press Reload a few times. Browser showed the page - reload - the page - reload - hangs for a few seconds... Error: "The page does not contains data". Apache access_log: the_page 200 the_page 200 the_page 200 the_page 304 Status 304 means "the page didn't change, show from a cache", but browser bugs on this. I am using Netscape 4.7 for glibc2. I tried it with lynx, but lynx didn't showd this, and all access in access_log marked with status 200. Anyway, even with lynx I had some strange problem - when I press Reload very often lynx showed the page - reload - the page - reload - hangs for 2-3 seconds - reload - the page - reload - the page - reload - hangs for 2-3 seconds... Is it Zope that does this little pauses? Oleg. ---- Oleg Broytmann Foundation for Effective Policies phd(a)phd.russ.ru Programmers don't die, they just GOSUB without RETURN.

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RE: [Zope] Zope stability
by Brian Lloyd 07 Dec '99

07 Dec '99

> The question I'd like to raise to the entire list regards > Zope's stability. > We are running Zope > integrated with Apache off FreeBSD3.2 . As far as I know, > this is not such > an exotic setup (probably > rather common?). As Chas explained previously, Zope just > suddenly died. > Teodore also had the same > error occur and solved it by rebooting his server. > > How often has this occured with other people? Are there any > good solutions > regarding providing a backup > in case Zope does die? (and keep the site running) Are there > any serious > Zope instability issues which > need to be discussed and alerted? Obviously, any stability problems get the highest priority from us here at DC - if you don't look good, *we* don't look good :^) We are _extremely_ interested in these "hanging" reports and would like to nail them down as quickly as possible so that we can address any issues internal to Zope and get a 2.1.1 release out there if necessary. For folks that are seeing these symptoms, you can help us speed the diagnosis by: o providing details on your environment (OS, version, zope version in use). Have there been any recent changes in the environment? o symptom description - does CPU go to 100%? If so, does there seem to be any pattern to the requests preceding the hang that you can determine (perhaps by looking at the server log)? Can you regularly reproduce it using a contrived test (like using ab or another benchmarking tool on a particular url or sequence of urls)? Does the problem happen only when accessing the system via pcgi or ZServer (or both)? o run in debug mode (using -D) and send any funny looking or unusual messages that you see o provide any unexplained tracebacks that you see from your site o Look at the "debug" screen at Control_Panel/manage_debug. This can be used to spot memory leaks and stuck database connections. If you think you may see something suspicious, save the document src and send it to us. o You can turn on more detailed logging by adding the following to your z2.py script: # turn on debug logging from ZServer import DebugLogger logfile=os.path.join(INSTANCE_HOME,'var/debug.log') DebugLogger.log=DebugLogger.DebugLogger(logfile).log It should be insertted after Zope is imported, e.g. after this line: exec "import "+MODULE in {} In particular, we want to look for requests that don't complete or for apparent leaking requests. Thanks! Brian Lloyd brian(a)digicool.com Software Engineer 540.371.6909 Digital Creations http://www.digicool.com

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Re: [Zope] Automatically Populating the title Property on html filesimported via ftp
by Webteam der Uni Bielefeld 07 Dec '99

07 Dec '99

Rik Hoekstra wrote: > > > > > > > > > > I've been trying to figure out a way to do this and have been > > > > banging my head > > > > against the wall. The end user still want's to edit the site > > > > with dreamweaver > > > > but needs the titles to show up in the catalog search. > > > > When using the ftp interface you lose properties that have > > > > been set, and you > > > > have nothing set on new documents. > > > > Any suggestions? > > > > > > If you want to work really hard, you could create your own kind of > > > object that parsed the title out of the HTML that gets FTPed up. > > > > > > Other than that, I can't think of any better way than getting an > > editor > > > that speaks HTTP in a scriptable way or XML-RPC. > > > > > > -Michel > > > > > > > A colleague of mine wrote up an object that sucks files of the local > > filesystem, replaces the start of the doc with <dtml-var > > standard_html_header> and the bottom with footer, and nicks whatever is > > within <TITLE></TITLE> to make the Title property of the DTML-doc.. > > Works rather neatly, but is still in development.. > > I'll talk to him about making it a product if it is stable and someone > > are interested.. Doesn't help you with ftp, though .. > > AFAIK this is already included with the zope distribution. Look for > <zope root>/utilities/load_site.py. This only works with the filesystem and > not for ftp, but you might use it in some way. > > Rik Works that way. You have to do some small changes in DTMLDocument.py and in the code provided by Oleg Broytman. You can find it in load_site-py. I have a working adaption for ftp/http-put that does nearly the same job as does load_site for files. I am just working on it because I need a way to tell Zope *not to change* the code in certain cases and because one thing that does not work is adding the meta-information as an additional property. If you're interested, I'll send you that code and a bit of documentation though both is *extremely* ugly (still learning python ...) BTW, I tried ob.manage_addProperty and the like from DTMLDocument.py to add metainformation but the only thing I achieved was adding a property to the parent folder or different sorts of errors (sorry, I'm writing out of memory, so no tracebacks:-). Any hints? Chris -- Webteam der Universität Bielefeld mailto:webteam@uni-bielefeld.de Tel. 0521 / 106-3651

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Zope and Oracle - again
by Andy Pahne 07 Dec '99

07 Dec '99

I know, we had this thread already... We have a Oracle 8 database running on Win NT. We have also Zope with Apache on a Linux Redhat 6.1 box. We cannot move the database over to Linux or the Server over to NT. My question is about the Oracle Runtime client, which I have to install (as I heard usual with Oracle products). I did not find it on the Oracle Homepage. Does it mean that I have to install Oracle on the Linux-Bow as well in order to have the librarys availlable, or is this client a separate software which i can install independently from the database engine? Where can I find more information on the client-software? Andy Pahne

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iPlanet
by Webteam der Uni Bielefeld 07 Dec '99

07 Dec '99

Hi! Does anyone have information about iPlanet Webserver and Zope? TIA Chris -- Webteam der Universität Bielefeld mailto:webteam@uni-bielefeld.de Tel. 0521 / 106-3651

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