October 2002 - Zope - Zope lists

RE: [Zope] Vhosting
by Adam Getchell 22 Oct '02

22 Oct '02

Sean, I went through your notes: I'm running on OpenBSD, and I'm ignoring SSL for now (I'd like that to work later ...) The latest OpenBSD Squid package was PRE5 ... is PRE10 necessary? Grabbed pyredir and put: pyredir in /usr/local/libexec pyredir.conf in /etc/squid Went through and commented out pyredir.conf since I want to redirect local stuff, don't care about CGIs, Ad banners, or Debian stuff. Since I'm only doing normal http: and I want to redirect http://ucdra.ucdavis.edu to http://ucdra.ucdavis.edu/ucdra I added this to pyredir.conf (one line, cut and pasted from server): ^http://ucdra.ucdavis.edu[/]?(.*)=http://ucdra.ucdavis.edu:8080/ucdra/Virtua lHos tBase/http/ucdra.ucdavis.edu/VirtualHostRoot/\1 I then went into /etc/squid/squid.conf and changed: redirect_program /usr/local/libexec/pyredir redirect_children 10 I grabbed squidctl and put it in /root, made it executable, and changed paths for the binary to /usr/local/bin/squid, but it doesn't detect the pid of my current squid, so I left that alone. I can still configure using just /usr/local/bin/squid I rebooted my server, and if I understand VHM and the rewrites above, that should be it. However, no rewriting is occuring as far as I can tell, so where did I go wrong? Thanks, -----Original Message----- From: sean.upton(a)uniontrib.com [mailto:sean.upton@uniontrib.com] Sent: Friday, August 23, 2002 5:28 PM To: AdamG(a)hrrm.ucdavis.edu; creiman(a)kefta.com; marc(a)bowery.com; quentins(a)comclub.dyndns.org Cc: zope(a)zope.org Subject: RE: [Zope] Vhosting How 'bout a slightly different approach: Setup Squid on port 80; use a redirector. Search freshmeat for pyredir; it's a good one, written in python, and very simple to use. The redirector is your friend, and makes virtual hosting work quite nicely; it acts like Apache's mod_rewrite, and plays well witha Virtual Host Monster. Instructions assume you use Zope with a VHM, and perhaps (might) want SSL and load-balancing for ZEO. Setup requirements: Squid, Zope, use of a VHM, use of a redirector, and optionally OpenSSL if you want SSL accel. Details: 1 - Prerequisites: OpenSSL; realpath and stat commands; Chris McDonough's squidctl script (find on the squid-users mailing list); pyredir 2 - Go download Squid 2.5pre10 source; untar in a directory of your choice. 3 - ./configure --prefix=/usr/local/squid --enable-dlmalloc --enable-pthreads --enable-storio=aufs --with-openssl=/usr/lib/include/openssl --disable-internal-dns --disable-identd-lookups --enable-ssl --> This is for Linux; you may want to adjust --enable-pthreads and use of aufs, since I think you want to use diskd instead on BSD --> Change path to openssl include files 4 - make && make install --> Squid will install in /usr/local/squid ($PREVIX) --> Squid.conf will be in /usr/local/squid/etc --> Sometime between Squid 2.5pre5 and Squid2.5pre10, the dir layout switched so that the squid binary is in $PREFIX/sbin 5 - Put the pyredir script in $PREFIX/libexec 6 - Put the pyredir.conf file in $PREFIX/etc 7 - Edit/hack pyredir: --> Disable redirector logging in the code if you have a big server (perhaps later, after this works?) --> Change path to log and pyredir.conf file --> Make sure all needed commands are supported (GET,POST,HEAD,etc) 8 - Put a VHM in the folder(s) you want to act as your host. 9 - Edit pyredir.conf: #this rule is for the public url mysite1.foo.com, which should #be accessed via SSL on port 443 on Squid... #it says ^http:// becuase squid passes the URL to the redirector #with the https stripped off so it is more like a normal URL. #note: there is a Zope VHM in the MySite1 folder ^http://mysite1.foo.com[/]?(.*) =http://zopeserver:8080/MySite1/VirtualHostBase/https/mysite1.foo.com:443/My Site1/VirtualHostRoot/\1 #Note that this one is http (not https) in the rewrite rule passed eventually to the virtual host monster ^http://mysite2.foo.com[/]?(.*) =http://zopeserver:8080/MySite2/VirtualHostBase/http/mysite2.foo.com:443/MyS ite2/VirtualHostRoot/\1 10 - Add "zopeserver" to /etc/hosts --> if you have a ZEO cluster, add the name zopeserver for every IP in your cluster; it will be round-robined --> Squid uses dnsserver (a resolver helper child program) for /etc/hosts support since its internal resolver only works with DNS --> this is why we compiled with --disable-internal-dns 11 - Set up any ssl keys/certs you need with openssl. 12 - Setup squid: http_port 80 #You will need to setup these keys with openssl first: https_port 443 cert=/usr/local/squid/var/mysite1.foo.com_cert.pem key=/usr/local/squid/var/mysite1.foo.com_key.pem cache_dns_program /usr/local/squid/libexec/dnsserver dns_children 5 redirect_program /usr/local/squid/libexec/pyredir redirect_children 12 redirect_rewrites_host_header off httpd_accel_host virtual httpd_accel_port 80 httpd_accel_single_host off httpd_accel_uses_host_header on #obviously there are other things to set up, these #are the interesting/specific ones 13 - Download and setup the squidctl script in /usr/local/squid --> you will have to change the path to reflect that the squid binary is in $PREFIX/sbin --> hack/adjust as necessary 14 - Chreate the cache dir; make sure permissions are okay for nobody/nogroup. --> Start squid; pay attention to any warnings about misconfig, and fix 15 - Adjust: --> ACLs in squid.conf as needed. --> Pyredir rules in pyredir.conf 'killall -s HUP pyredir' will reload rules without a squid restart --> SSL config, if needed 16 - Once squid is going, make sure DNS or hosts on your client points to your accelerator box, and try the URL... 17 - Once you have everything working, if you have a ZEO cluster, give consideration to trying the ICP patches for Zope to allow for true load-balancing by adding Zope servers to Squid's notion of its caching fabric... 18 - Email me with questions if anything doesn't work. I plan on trying to turn these really rough notes into a howto at some point on Zope.org, but I'm too busy at the moment. Perhaps discussion here on the list will help me with that process. Questions, thoughts? Sean -----Original Message----- From: Adam Getchell [mailto:AdamG@hrrm.ucdavis.edu] Sent: Friday, August 23, 2002 3:51 PM To: 'Charlie Reiman'; Marc Lindahl; Quentin Smith; Adam Getchell Cc: zope(a)zope.org Subject: RE: [Zope] Vhosting Hello all, Okay, so I read the links you gave me. http://www.zope.org/Documentation/Books/ZopeBook/2_6Edition/VirtualHosting.s tx http://www.zope.org/Members/Jace/apache-vhm http://www.zope.org/Members/bowerymarc/squid-zserver-virtual Starting from scratch, I created a zope user on my OpenBSD box, with a home directory of /home/zope. I then ran # /usr/local/bin/zope-instance /home/zope as root, to create an instance of Zope. # chmod -R zope:nobody /home/zope # su zope # /home/zope/start & To start Zope as user zope. I then logged into the site, created my /site1 and /site2 folders, and created a Virtual Host monster with mappings of: site1.ucdavis.edu/site1 site2.ucdavis.edu/site2 At this point, going to site1.ucdavis.edu goes to the main website, while going to site1.ucdavis.edu:8080 goes to the subfolder. So I think my Squid configuration is off. I went through /etc/squid/squid.conf and have the following options enabled (not commented out): http_port 80 acl QUERY urlpath_regex cgi-bin \? no_cache deny QUERY cache_dir diskd /var/squid/cache 100 16 256 emulate_httpd_log on auth_param basic children 5 auth_param basic real Squid proxy-caching web server auth_param basic credentialsttl 2 hours httpd_accel_host my.ip. httpd_accel_port 8080 httpd_accel_single_host on I'm confused about the ACL's in step 4 of http://www.zope.org/Members/bowerymarc/squid-zserver-virtual I don't see an acl of type webserver in squid.conf ... So what should that line be? acl ext-ip-addr site1.ucdavis.edu www.xxx.yyy.zzz/255.255.255.255 And then the ACL is ...? Http_access allow MATCH ext-ip-addr Clearly, the zope side of things are working so far. What is the SiteAccessEnhanced used for? Do I still need a site root in each virtual folder? Many thanks, --Adam -----Original Message----- From: Charlie Reiman [mailto:creiman@kefta.com] Sent: Friday, August 23, 2002 9:06 AM To: Marc Lindahl; Quentin Smith; Adam Getchell Cc: zope(a)zope.org Subject: RE: [Zope] Vhosting You should also read the 2.6 docs on VHM. They're downright tasty. http://www.zope.org/Documentation/Books/ZopeBook/2_6Edition/VirtualHosting.s tx They apply to 2.5.1 as far as I noticed. > -----Original Message----- > From: zope-admin(a)zope.org [mailto:zope-admin@zope.org]On Behalf Of > Marc Lindahl > Sent: Thursday, August 22, 2002 11:42 PM > To: Quentin Smith; Adam Getchell > Cc: 'zope(a)zope.org' > Subject: Re: [Zope] Vhosting > > > Try: http://www.zope.org/Members/bowerymarc/squid-zserver-virtual > > > on 8/22/02 10:15 PM, Quentin Smith at quentins(a)comclub.dyndns.org > scrivened: > > > Hi- > > Use a Virtual Host Monster, one in the root of the site. Ideally, you > > should put Apache or Pound in front of Zope instead of squid, but you > > can use the Mappings tab of the Virtual Host Monster to define the > > virtual hosts. I used to use SiteRoots for my site, and none of the > > directions I found actually worked. > > HTH, > > --Quentin > > On Thursday, August 22, 2002, at 08:27 PM, Adam Getchell wrote: > > > >> Hello all, > >> > >> I've read and re-read > >> http://www.zope.org/Members/4am/SiteAccess2/vhosting a > >> number of times. > >> > >> I have a webserver that needs to host a bunch of different sites, > >> site1.ucdavis.edu, site2.ucdavis.edu, etc. > >> > >> I planned to use name based redirection, so I have c-names to the IP > >> address > >> of the server, i.e. site1.ucdavis.edu --> IP, site2.ucdavis.edu --> IP, > >> etc. > >> > >> I installed on OpenBSD, so Zope runs as an instance in /home/zoperoot > >> under > >> port 8080, and Squid sits in front of it and redirects from 80 to port > >> 8080. > >> This part is working fine. > >> > >> Under my main zope site, I created two folders, site1 and site2. I then > >> created, in each folder, an empty SiteRoot. That is, Title, Base, and > >> Path > >> are all blank. At least, that's how I interpreted the directions above. > >> > >> I then created a DTML method called host_redirector, with the following > >> content: > >> > >> Extract the part of HTTP_HOST we care about, and declare our rewrite > >> dictionary. > >> <dtml-let hostname="_.string.upper(_.string.split(HTTP_HOST, '.')[0])" > >> sitemap="{'SITE1': 'site1', > >> 'SITE2': 'site2'}"> > >> Do we have a match? > >> <dtml-if expr="sitemap.has_key(hostname)"> > >> Set the logical root: <dtml-call "REQUEST.set('SiteRootPATH', '/')"> > >> Add physical root: <dtml-call > >> "REQUEST['TraversalRequestNameStack'].append(sitemap[hostname])"> > >> </dtml-if> > >> </dtml-let> > >> > >> Since I only care about the first part of the name, I rewrote > the script > >> from the example. It may be incorrect! I tried the equivalent at a > >> python > >> interpreter, but I may certainly have goofed up. > >> > >> In the root folder, I Set an Access rule to host_redirector. > >> > >> I changed the index pages in each of Site1 and Site2 to differentiate > >> them. > >> However, going to site1.ucdavis.edu gives the top level index_html, > >> while > >> going to site1.ucdavis.edu/site1 gives index_html in the Site1 folder, > >> so > >> clearly I did something wrong. > >> > >> Any pointers? > >> > >> *************************** > >> * Adam Getchell > >> AdamG(a)hrrm.ucdavis.edu > >> * System Architect/Programmer (530) 752-1584 > >> * Human Resources Information Systems > >> http://www.hr.ucdavis.edu/ > >> *************************** > >> "Invincibility is in oneself, vulnerability in the opponent." > -- Sun Tzu > >> > >> > >> > >> > >> _______________________________________________ > >> 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 ) > >> > > > > > > _______________________________________________ > > 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 ) > > > > > _______________________________________________ > 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 ) > _______________________________________________ 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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writing in Z2.log
by cyrille 22 Oct '02

22 Oct '02

hello, I use to develop with Perl & Php under Apache env. Generally I can write some trace in error_log file. How can I do something like that with Zope ???? I found only information about python debugger. I think it's more complex ! Is there some method for writing in log file (Z2.log) ?? thanx, Cyrille

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Store a image or file(mp3,mpeg) in PostgreSQL
by Terry 22 Oct '02

22 Oct '02

Hello, Does anyone has a example to "Store a image or file(mp3,mpeg) in PostgreSQL". I had tried to search on Google and maillist but no information are really useful or show any idea. Thanks for any reply or hints Terry

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Treinamento em Zope
by Daniel Schmitz 21 Oct '02

21 Oct '02

Treinamento em Zope via Internet A empresa ADR Soluções, incubada no Núcleo Softex da Universidade Federal de Juiz de Fora, promoverá neste mês de novembro o 1 "Treinamento em Zope via Internet." O curso será ministrado pelo diretor da empresa, Daniel Schmitz, que atua no estudo do Zope desde 2001, já tendo produzido diversos sites em Zope, e atualmente no novo WebSite da Universidade Federal de Juiz de Fora (Em Zope, claro! ). O curso será ministrado em 15 aulas, que serão liberadas a cada dois dias, a começar pelo dia 04 de novembro. Além das aulas (material exclusivo, criado pelo próprio professor), o aluno poderá realizar perguntas e obter total suporte no desenvolvimento de suas aplicações. O curso será dedicado não só a conhecer o Zope, mas sim a desenvolver um WebSite usando o próprio Zope. Quem se inscrever ganhará um CD personalizado contendo o Zope, além dos seus produtos mais conhecidos tais como CMF, Content Index, Pool, etc. Para obter maiores informações visite: www.adr-solucoes.com.br/treinamento/zope ou pelo telefone: 0 XX 32 3229 3430, falar com Daniel _______________________________________________________________________ Yahoo! GeoCities Tudo para criar o seu site: ferramentas fáceis de usar, espaço de sobra e acessórios. http://br.geocities.yahoo.com/

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Zope 2.6.0 hanging up something
by cyrille 21 Oct '02

21 Oct '02

hello, is there some of you getting Zope 2.6.0 hanging up something ?? Some time last uploaded Zope 2.6.0 stopping to answer on http port. Zope is alive, I can see it's threads with 'ps' command. I've to restart it to get it back answering. Nothing is reporting in Z2.log, nothing on da console when I lauch it in foreground. The only difference between that new Zope and my older Zope (Zope-2.4.2-linux2-x86) is that I'm lauching Zope via 'su' command to get it running under user 'zope'. here some details of my configuration : - Linux www1 2.2.14 #3 SMP Wed Mar 29 20:53:14 CEST 2000 i686 unknown - Zope-2.6.0-linux2-x86 Perhaps there are some tips to try to know more about incident, please if you know tell me, because I'm not a expert on Zope server. I'm only a Zope Manager ;o) cyrille

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IMG attributes in ZPT
by Jon Whitener 21 Oct '02

21 Oct '02

Zopers: How can I manipulate the attributes that are included when I insert a ZPT-rendered image tag, for CSS reasons? (I hope there's a way to do this in the page template.) Specifically, I want to keep the WIDTH, HEIGHT, and ALT attributes as they render dynamically, but add a CLASS attribute, and get rid of the BORDER attribute. Currently, the ZPT code: <div tal:replace="structure here/menu_icon">MENU ICON</div> renders as: <img src="http://localhost:8080/menu_icon" alt="Stub Menu Icon" height="69" width="92" border="0" /> I'm glad the WIDTH and HEIGTH are included automagically, but how can I: - Insert a CLASS attribute, e.g. class="menu-icon"? - Leave out the BORDER attribute? I don't know how that got in there. Is there some way to add a class="menu-icon" attribute in the tag? If I really must break it down into: <img src="IMG SRC" class="menu-icon" tal:attributes="src here/menu_icon/absolute_url" /> Then, how do I include the ALT, WIDTH and HEIGHT attributes into the tag, without hard-coding them? BTW { I found in the docs about the tag(height=None, width=None, alt=None, scale=0, xscale=0, yscale=0, **args) method of an Image object, but I have no idea how to access or modify that stuff. If this is necessary, please provide details. } Thanks in advance, Jon Whitener Detroit MI, USA

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deleting while iterating over ObjectManager
by John Hunter 21 Oct '02

21 Oct '02

Is it safe to delete instances while iterating over the contents of an ObjectManager instance, as in: for item in folder.objectValues(): if some_condition: folder.manage_delObjects(item.getId()) break do_something(item) Thanks, John Hunter

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Set and Detect Cookies in same call?
by Jim Kutter 21 Oct '02

21 Oct '02

I have searched high and low for an answer, and haven't found one yet: Is it possible to set a cookie, then detect if it got set properly immediately after? Or do I have to set it in one call, then detect it in another? It seems that setCookie puts the "cookie" variable into the request object regardless if cookies are enabled, so a later in the same call, calling cookies.has_key always returns true. Is this what's happening? Thanks -jim

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standard_error_message question & headers
by keo 21 Oct '02

21 Oct '02

hi, i am experiencing that something is putting stuff in front of my standard_error_message, what can it be? stuff like: <TABLE BORDER="0" WIDTH="100%"> <TR VALIGN="TOP"> <TD WIDTH="10%" ALIGN="CENTER">   </TD> <TD WIDTH="90%"> <H2>Site Error</H2> <P>An error was encountered while publishing this resource. </P> <P><STRONG>Unauthorized</STRONG></P> i have zope 2.5.1, linux2, apache 1.3.26 rewriterules, (zope listening on 9673), and siteroot. can this be apache putting his stuff in front of it? another (important) question, apache is keeping putting content-type: headers in responses, with the wring charset ... how can this be disabled? when i access it on localhost:9673 it works fine and gives the content-type header that i coded in zope. thanks for the help, k.,

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Save this search
by Michael 21 Oct '02

21 Oct '02

I was wondering if anyone could point me to some resources on how to implement a 'Save This Search' feature. Has anyone actually had the need to do this? Michael

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