March 2004 - Zope - Zope lists

ZODB Conflict Error
by Kevin Carlson 05 Mar '04

05 Mar '04

Hi all, Every two minutes exactly, a ZODB conflict error is being logged in my zope event log file. After googling for what a ZODB Conflict Error actually is, I still don't have enough information to actually solve this problem. Below is one of the sample records: 2004-03-05T08:30:45 INFO(0) ZODB conflict error at /VirtualHostBase/http/www.site.com:80/Conf/PSCAD/VirtualHostRoot/ (267 conflicts since startup at 2004-03-04T22:02:21) The site itself is operating fine, but I noticed that the log file was getting rather large and looked into it only to find a huge amount of messages like the one above. From what I understand this type of error is caused when two threads attempt to write to a common object. Since this site is simply serving up information and doesn't allow any content edits, I'm a bit confused on how this is happening. All of the conflict error messages in the event log are identical to the one above (except for the date/time/count info). Any ideas as to what is causing this? Thanks, Kevin

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Thread problem
by Thyb 05 Mar '04

05 Mar '04

Hi, What might cause the following error while starting zope with zopectl script? I compiled python 2.3.3 with threads. Traceback (most recent call last): File "/opt/Zope-2.7/lib/python/Zope/Startup/zopectl.py", line 207, in ? main() File "/opt/Zope-2.7/lib/python/Zope/Startup/zopectl.py", line 190, in main c.onecmd(" ".join(options.args)) File "/usr/local/lib/python2.3/cmd.py", line 210, in onecmd return func(arg) File "/opt/Zope-2.7/lib/python/Zope/Startup/zopectl.py", line 134, in do_start ZDCmd.do_start(self, arg) File "/opt/Zope-2.7/lib/python/zdaemon/zdctl.py", line 214, in do_start os.spawnvp(flag, args[0], args) File "/usr/local/lib/python2.3/os.py", line 543, in spawnvp return _spawnvef(mode, file, args, None, execvp) File "/usr/local/lib/python2.3/os.py", line 504, in _spawnvef wpid, sts = waitpid(pid, 0) OSError: [Errno 10] No child processes Thx, Thyb

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Zope install after compiling
by Thyb 05 Mar '04

05 Mar '04

Hi, I encountered an error during installing a successfuly compiled zope. copying skel/var/README.txt -> /opt/Zope-2.7/lib/python/../../skel/var [ -f /opt/Zope-2.7/bin/python ] || ln -sfn "/usr/local/bin/python" /opt/Zope-2.7/bin/python Usage: ln [-f|n] [-s] src [target] or: ln [-f|n] [-s] src1 ... srcN directory make: 1254-004 The error code from the last command is 1. Why did this happen? Thyb

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Conversion from unix date
by Ed Colmar 05 Mar '04

05 Mar '04

I'm sure this has been asked before, but I couldn't get any search hits. Hopefully someone could point me in the right direction. I have a date field that looks like 1076754860 How can I convert this out to a regular date? Thanks -ed- -- Green Graphics ::: Print and Web Design ::: 510.923.0000

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Zope 2.6.4/2.7 Slow FTP...again.
by Edward Pollard 05 Mar '04

05 Mar '04

While we're working on trying to find alternate solutions, we've decided to go back to Zope 2.6.0 to serve the data in the system we've developed over the last year and a half. We took a box, running RedHat 9, and installed Zope 2.6.0 as follows: Install directory: /usr/local/zprod python: # export CC="gcc -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -I/usr/kerberos/include" # ./configure --prefix=/usr/local/zprod/python --with-threads # make # make install Zope: # cd /usr/local/zprod # tar -zxvf /web/zsup/src/Zope-2.6.0-src.tgz # mv Zope-2.6.0-src Zope-2.6.0 # ln -s Zope-2.6.0 zope # chown -R apache:zopeadmins Zope-2.6.0 # cd zope # su apache -s /bin/sh -c "/usr/local/zprod/python/bin/python2.1 ./wo_pcgi.py" # /usr/local/zprod/python/bin/python2.1 ./zpasswd.py inituser and testrun: # su apache -s /bin/sh -c "./start" Works like a charm. We used the exact same steps for Zope 2.6.4. FTP downloads run at 10k/sec. Anyone see any problems with this? Anyone else using RedHat 9? We're going to try an install on Debian tomorrow. Ed

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SFTPGateway problems
by Brad Clements 05 Mar '04

05 Mar '04

Mostly for fdrake.. FYI, Twisted 1.20 has serious issues with the ftp client. For example, the LIST command is sent as L\nI\n etc.. (looks like a tuple unpack error). I checked out Twisted from CVS and that fixes the List command, but it still doesn't work correctly with sftpgateway. Using an sftp client, or jEdit's FTP client plugin, I can list files but RETR returns nothing. I went back to Twisted 1.1.1 (this is all on Python 2.3) and now sftp seems to work (at least RETR does), but the jEdit FTP plugin cannot download a file. I see this for debug output: 2004-03-05 11:37:38 sftpgateway.bkc:3 FTP command: PASV 2004-03-05 11:37:38 sftpgateway.bkc:3 FTP message: 227 Entering Passive Mode (127,0,0,1,223,245) 2004-03-05 11:37:38 sftpgateway.bkc:3 FTP command: RETR /Holmes/BottomNavBar.pt 2004-03-05 11:37:38 sftpgateway.bkc:3 connection lost 2004-03-05 11:37:38 sftpgateway.bkc:3 received chunk for offset 0 (1531 bytes) 2004-03-05 11:37:38 sftpgateway.bkc:3 FTP message: 150 Opening Binary mode data connection for file '/Holmes/BottomNavBar.pt' 2004-03-05 11:37:38 sftpgateway.bkc:3 FTP message: 226 Transfer complete 2004-03-05 11:37:38 sftpgateway.bkc:3 FTP command: QUIT 2004-03-05 11:37:38 sftpgateway.bkc:3 FTP message: 221 Goodbye. 2004-03-05 11:37:38 sftpgateway.bkc:3 lost FTP connection: connection lost However the jEdit plugin works fine with the standard Linux sftpd. I can't see why jEdit would drop the connection. From the client side, it's still waiting to receive data. jEdit uses the open source sshtools stuff from sourceforge. My question is, has anyone gotten jEdit to work with sftpgateway? And warning, if you move beyond Twisted 1.1.1 be ready for some debugging. :-( -- Brad Clements, bkc(a)murkworks.com (315)268-1000 http://www.murkworks.com (315)268-9812 Fax http://www.wecanstopspam.org/ AOL-IM: BKClements

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FTP server
by John Poltorak 05 Mar '04

05 Mar '04

Does Zope's builtin FTP server automatically start up when starting Zope? It doesn't appear to start for me unless it is using some port I don't know about. Is there anything in the build options which specify that it should start up automatically, and which port it should use? Or any logs which might tell me that it did start but failed? -- John

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ZOPE
by norazman 05 Mar '04

05 Mar '04

I really need an explanation regarding the ZOPE. Right now i'm not download or use any Zope, But i understand the use of it. But I really need to know if i can add any application that was written in PHP in ZOPE? Hope you can help me.

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inside-out virtual hosting
by Erik Myllymaki 05 Mar '04

05 Mar '04

The last section of this page, http://zope.org/Documentation/Books/ZopeBook/2_6Edition/VirtualHosting.stx , describes what I am hoping to accomplish. I can setup p virtual hosting with VHM where zope is the default and selective folders are static content served by apache, but I want to do the opposite. I want 90% of the site to sit in /var/www/htdocs and be served by apache and just some of the content via Zope - going to www.mydomain.tld should bring up the static index.html file, and only going to www.mydomain.tld/Zope/* would bring up zope dynamic content. Can anyone explain this in better detail? The article is fairly vague...

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Re: [Zope] Win32 Zope Instance
by Chris Withers 05 Mar '04

05 Mar '04

(keep on the list) Gál László wrote: >>Well, try installing Zope 2.7.0 on that machine ;-) > > Not a good idea. As I said my task is to create a zope > instance running from cd-rom *without* installation. Urm, yeah, well, you'll need ot Zope source and binary code to be able to execute the Zope source and binary code ;-) You're currently trying to drive a car with fuel and no car ;-) You need to build an image which contains a Zope 2.7.0 install, and a Zope 2.7.0 instance home which uses that install, and make damn sure neither does anything to write to disk... cheers, Chris

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