October 2001 - Zope - Zope lists

A new list needed?
by James Johnson 21 Oct '01

21 Oct '01

<color><param>0100,0100,0100</param>I don't see that much traffic to warrant such changes. What I see happen is the new people missing out on all the good stuff that the more advanced people do with Zope. This is one of the things I love about Zope, the ability to interact with the Guru's. Your idea makes sense, I just believe that the quickest way for a newbie to become a hacker is to "use the source". I would be for it if it were an open list and the hackers actually used it alot. -James <color><param>7F00,0000,0000</param>> I'm looking for/want a Zope mailing list that's for more advanced > programming under Zope. > > zope-dev is for Zope innards, which isn't appropriate, and I think the > level of some of the stuff that comes through zope(a)zope.org is a > little low (and fairly repetitive), which seems to remove most of the > skilled people from the list due to noise. > > A zope-hackers type list would be quite useful I think. Anyone else > think it would be a good idea? <nofill>

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Getting Postgres and exUserFolder to work with Zope
by Heimo Laukkanen 21 Oct '01

21 Oct '01

Hi, I spent a couple of hours trying to get Zope to work with postgres. There simply was not one good guide or howto available, all the rigth info was avaialble -- but on different mailinglists. Here is what I did, hope it helps someone else -- or perhaps someone will get a spark from this and write a decent howto. Atleast after this mail people will find the info from one place. Using: Zope Zope 2.3.2 Python 1.52 ExUserFolder 0-8-0 psycopg-0.99.6 postgresql-7.1.3 egenix-mx-base-2.0.2 1) Getting all the pieces together Postgresql - http://www.postgresql.org/ ExUserFolder - http://exuserfolder.sourceforge.net/ psycopg (Postgres database adapter ) - http://www.zope.org/Members/fog/psycopg egenix mx Extensions - http://www.lemburg.com/files/python/eGenix-mx-Extensions.html 2 ) Installing Postgres Downloaded source-distribution and unpacked it to my tmp. cd to the postgres directory. Read from the manual how to install. Here is it snipped in short form. ./configure gmake gmake install adduser postgres mkdir /usr/local/pgsql/data chown postgres /usr/local/pgsql/data su - postgres /usr/local/pgsql/bin/initdb -D /usr/local/pgsql/data /usr/local/pgsql/bin/postmaster -D /usr/local/pgsql/data >logfile 2>&1 & /usr/local/pgsql/bin/createdb test /usr/local/pgsql/bin/psql test After this make sure that the lib-files are in a place that Zope can find them! 3 ) Install egenix mx Extensions Downloaded source-distribution, since only that has the header-files we need while compiling psycopg. Unpack into temp. cd to the directory. python setup.py install 4) Installing psycopg Unpack to the temp. cd to the directory. Make sure you know where your egenix-sources are, postgres lib-files and postgres includes. Then give then in config. Example below. ./configure --with-mxdatetime-includes=../egenix-mx-base-2.0.2/mx/DateTime/mxDateTime/ --with-postgres-libraries=/usr/local/pgsql/lib --with-postgres-includes=/usr/local/pgsql/include make make install 5) Copying files to rigth places This part was frustrating and propably has had everyone wondering for some time. I found this thing to be helpful, tip was also found on different mailing lists. copy mxDateTime.so from: .../python1.5/site-packages/mx/DateTime/mxDateTime.so to: .../python1.5/site-packages/mxDateTime.so so that psycopgmodule.so can find it when zope is started up. And similarly make sure that the psycopgmodule is located in the psycopgmodule.so got placed in .../python1.5/site-packages/psycopgmodule.so 6) Installing exUserFolder Just unpack it and copy to zope/Products - where ever you have it. 7) Create database table for authentication Within the exUserFolder distribution comes a file pgAndreasScheme.sql. >From that we will use only one table for now. This is just for testing purposes. su postgres psql template1 CREATE TABLE "passwd" ( "username" character varying(64) UNIQUE NOT NULL, "password" character varying(64) NOT NULL, "roles" character varying(255), Constraint "passwd_pkey" Primary Key ("username") ); \q You have created your table. 8) Restart zope 9) Go into management interface You should see Z psycopg Database connection in the list available for selection. If not, go to the control panel and product management and see what is the traceback on that product. Propably some of the modules is not found - which can be because you lib-files are somewhwere whwre they should not be ,-) Try to add Z psycopg Database connection. For connection string use: dbname = template1 user = postgres Ok. Everything should work. You can test it by clicking the test-tab in Z psycopg and trying following sql-query: select * from passwd; 10) Add exUserFolder Warning. Don't do this on the root folder! Select postgres authentication source. And select rest as you like. Click next. For authentication properties write: Table Name: passwd Username Column: username Password column: password Roles Column: roles Etc. Have fun. Hope this helps. -huima

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Re: [Zope] A new list needed?
by Anthony Baxter 21 Oct '01

21 Oct '01

>>> "Michael R. Bernstein" wrote > Personally, I'd prefer newsgroups to mailing lists. A news.zope.org NNTP > server along with a heirarchy of groups would do wonders, IMO. > > It would also help better deal with the volume that curently surges > through here. > > Michael Bernstein. And if we mention it enough times, Shane will probably write a news server to run it. :) -- Anthony Baxter <anthony(a)interlink.com.au> It's never too late to have a happy childhood.

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Re: [Zope] One big Zope or many small Zopes? Or perhaps a ZEO?
by Bak ＠ kedai 20 Oct '01

20 Oct '01

>Thanks Sean (and Kirk). > >So, ya'll are saying we should have ONE zope managed over several servers >with ZEO (and caching)? Key question is the ONE zope. > >Currently, our huge zope is for the newspaper content, then homes is on it's >own install, classifieds another and business directory another and two >testing zopes on two others. (All on one box with our database pulled from >another box.) > >Am I understanding that correctly? > >One other quick question. With 75,000 page > views per day, set up the way we >are now, (one box/multiple zopes) how many connections should we be >allowing? I think the default it 4 and we have opened it up to 8. Sound >right? > we're a newspaper house too, and currently running on one zope, with many zeo clients. what we're missing now, (what we should have done earlier, if we'd known :)) is to enable caching on dynamic sections, as suggested by a message before this. putting squid in front, as suggested by sean is also one of the answer. caching expensive methods is another. however, we're currently on 2.4.x, and RAM cache dont have automated invalidation. we're in the midst of trying to pull StandardCacheManager from 2.4.x to 2.3.x and hope that it doesnt break zope. so, if youre starting fresh, work with zope2.4.x, use ramcache, and probably use squid. with one zope, management should be easier. if the site crawls, add another zeo client. however, getting the logs together may be a challenge:) increasing the number of threads dont really guarantee faster response. there's a 7(10?) connection pool limit in the ZODB. in previous threads, we've tried increasing the thread number, and bumping up the connection pool to thread # + 2. http://zope.nipltd.com/public/lists/zope-archive.nsf/ByKey/09FAF907CB95FDF9 so if we're using -t 7, we increased the connection pool to 9. are you front ending with apache? from our experience, with > 100 simultaneous connections per zeo client, the site will crawl. we're experiencing that now, and thus the experiment with ram cache. *nix flavor recommended. sorry for the mish mash of information. it's the weekend :)

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Re: [Zope] CLIENT_HOME NameError
by Lee Harr 20 Oct '01

20 Oct '01

>Did you run "python wo_pcgi" to compile Zope? > No, I installed from the FreeBSD port. But I found the problem! It's amazing how different these two lines can be: cp -R ../../../../Zope.old/lib/python/Products/Squishdot/ ./ cp -R ../../../../Zope.old/lib/python/Products/Squishdot ./ The second one is good... The first one copies the contents of the directory in to the current directory and totally wrecks everything! Thanks for your help Chris. Lee Harr missive(a)hotmail.com _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp

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getting the number of returned objects
by Timothy Wilson 20 Oct '01

20 Oct '01

Hi everyone, Let's say I've got a PythonScript called 'getResults' that does a catalog query. What is the proper way to get how many results were returned by getResults in DTML? For example, <dtml-var "len(getResults)"> doesn't work (I didn't think it would). I've tried some other variants without success. Any ideas? -Tim -- Tim Wilson | Visit Sibley online: | Check out: Henry Sibley HS | http://www.isd197.org | http://www.zope.com W. St. Paul, MN | | http://slashdot.org wilson(a)visi.com | <dtml-var pithy_quote> | http://linux.com

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RE: [Zope] getting the number of returned objects
by Gitte Wange 20 Oct '01

20 Oct '01

On 20. oktober 2001 21:10, Timothy Wilson [SMTP:wilson@visi.com] wrote: > Hi everyone, > > Let's say I've got a PythonScript called 'getResults' that does a > catalog > query. What is the proper way to get how many results were returned by > getResults in DTML? For example, <dtml-var "len(getResults)"> doesn't > work (I didn't think it would). I've tried some other variants without > success. Any ideas? > > -Tim Have you tried with: <dtml-in getResults> <dtml-var sequence-length> </dtml-in> ? Gitte Wange

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Re: [Zope] CLIENT_HOME NameError
by Lee Harr 20 Oct '01

20 Oct '01

> >Try this: > >1. cd to the "lib/python" directory of your broken Zope install >2. run python (e.g. just type "python", hit enter, or find the >executable and run it) >3. type: import Zope; app=Zope.app() > >See if any tracebacks occur. If they do, send them over. If they >don't.. well... we need to find out what's going on. > w3east# python Python 2.1.1 (#1, Oct 20 2001, 10:58:02) [GCC 2.95.3 20010315 (release) [FreeBSD]] on freebsd4 Type "copyright", "credits" or "license" for more information. >>>import Zope; app=Zope.app() Traceback (most recent call last): File "<stdin>", line 1, in ? File "/usr/local/www/Zope/lib/python/Zope/__init__.py", line 90, in ? import sys, os, App.FindHomes File "/usr/local/www/Zope/lib/python/App/FindHomes.py", line 90, in ? import os, sys, Products, string File "/usr/local/www/Zope/lib/python/Products/__init__.py", line 39, in ? from ImageFile import ImageFile File "/usr/local/www/Zope/lib/python/ImageFile.py", line 97, in ? from App.ImageFile import ImageFile File "/usr/local/www/Zope/lib/python/App/ImageFile.py", line 90, in ? from Globals import package_home File "/usr/local/www/Zope/lib/python/Globals.py", line 90, in ? import Acquisition, ComputedAttribute, App.PersistentExtra, os File "/usr/local/www/Zope/lib/python/App/PersistentExtra.py", line 87, in ? from Persistence import Persistent ImportError: cannot import name Persistent >>> Lee Harr missive(a)hotmail.com _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp

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Re: [Zope] CLIENT_HOME NameError
by Lee Harr 20 Oct '01

20 Oct '01

>What's the full traceback? > Traceback (most recent call last): File "/usr/local/www/Zope/z2.py", line 546, in ? zdaemon.run(sys.argv, os.path.join(CLIENT_HOME, Zpid)) NameError: name 'CLIENT_HOME' is not defined Lee Harr missive(a)hotmail.com _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp

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RE: [Zope] Data.fs 2GB problem ...
by sean.upton＠uniontrib.com 20 Oct '01

20 Oct '01

I don't think that is the case under Linux with a 64-bit userspace. Someone on this list (Bill?) had indicated it worked to have large files on ext2 under 64 bit architectures. Sadly, that excludes UltraSPARC, because its user-space is still 32 bit, but I guess this limitation doesn't exist on Alpha, Itanium, or PA-RISC, but you may still need a 2.4 kernel for Itanium if you are to use that as a platform. Next year, my company is likely to migrate our ZEO Storage Servers to an intel architecture from Linux/Sparc, and will likely use ReiserFS at that time, since it has been in the mainsteam 2.4.1+ kernels, and is reported to be stable on IA32... Sean -----Original Message----- From: Takashi Linzbichler [mailto:takashi.linzbichler@smartferret.com] Sent: Thursday, October 11, 2001 9:41 AM To: Gitte Wange Cc: zope(a)zope.org Subject: Re: [Zope] Data.fs 2GB problem ... Hi, Gitte ! Gitte Wange wrote: > > hmmm... isn't a filesystem limit? what fs are you using? > > No I don't think so. We are using ext2 but the problem could be the > python interprenter as Andreas mentioned .. Not sure about that. If you're using ext2 and a Kernel < 2.4.x or a fIlesystem created under a Kernel < 2.4.x, you're quite out of luck, sorry to say that. Check the list-archives for further infos. regards, ta -------------------------------------------------------------------------- smartferret it-consulting Dipl.-Ing. Linzbichler KEG Dipl.-Ing. Takashi Veikko Linzbichler Tannhofweg 28/3 A-8044 Graz, Austria Tel.: 0316 / 39 89 40 -0 Fax: 0316 / 39 89 40 -20 Mobil: 0676 / 31 26 286 eMail: takashi.linzbichler(a)smartferret.com WWW: http://www.smartferret.com -------------------------------------------------------------------------- _______________________________________________ Zope maillist - Zope(a)zope.org http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )

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