[Zope] DirectoryStorage & ZEO... how?

[Wankyu Choi]

Here's how I do it.

1. custom_zodb.py on ZEO Client

    import ZEO.ClientStorage
   =20
    ZSS_SERVER=3D'10.0.0.1'   # assuming your ZSS is running=20
    ZSS_PORT=3D8888           # on 10.0.0.1:8888
   =20
    Storage=3DZEO.ClientStorage.ClientStorage( ( ZSS_SERVER, ZSS_PORT ) =
)

2. start script on ZEO client

    #! /bin/sh
   =20
    PATH=3D"/bin:/usr/bin:/usr/sbin:/sbin"
    ZOPE_HOME=3D/usr/lib/zope
    INSTANCE_HOME=3D/usr/lib/zope
    INST_HOME=3D${INSTANCE_HOME}
   # CLIENT_HOME=3D/opt/storage/zope
    #STUPID_LOG_SEVERITY=3D"-300"
    #export STUPID_LOG_SEVERITY=20
   =20
    export INST_HOME INSTANCE_HOME ZOPE_HOME PATH CLIENT_HOME
   =20
    sudo -u zope python    $ZOPE_HOME/z2.py         \   # zope is the =
user
under which Zope runs
            -u      zope       \
            -z      $ZOPE_HOME              \
            -Z      /var/run/zwatchdog.pid  \
            -w      8080                    \
            -f      8021                    \
            -m      ''                      \
            -l      /var/log/zope      \
            -D                              \ =20
            >>      /var/log/zope 2>&1 \
            &

4. start script on ZEO Storage Server
       =20
    #! /bin/sh
   =20
    PATH=3D"/bin:/usr/bin:/usr/sbin:/sbin"
    ZOPE_HOME=3D/usr/lib/zope
    INSTANCE_HOME=3D/usr/lib/zope
    INST_HOME=3D${INSTANCE_HOME}
    CLIENT_HOME=3D/opt/storage/zope
    #STUPID_LOG_SEVERITY=3D"-300"
   # export STUPID_LOG_SEVERITY=20
    export INST_HOME INSTANCE_HOME ZOPE_HOME PATH CLIENT_HOME
   =20
    exec python    /usr/lib/zope/ZEO/start.py -u zope -D -p 8888 -S
1=3D$ZOPE_HOME/zeo_custom_zodb:Storage  \
            >>      /var/log/zope 2>&1 \
            &

4. zeo_custom_zodb.py on ZSS

    import os,sys
   =20
    from DirectoryStorage.Full import Full as S
    from DirectoryStorage.Filesystem import Filesystem
   =20
    # Change this to point to your database directory
    fs =3D Filesystem('/opt/storage/zope/dirstorage') # assuming your
dirstorage resides under /opt/storage/zope=20
   =20
    Storage =3D S(fs)               =20

You should sudo to the user ZEO expects ( not root ): create a user for =
the
sole purpose of running ZEO. If you try to run ZEO as root or do not =
sudo to
the ZEO user, you'd end up with ZEO clients waiting forever for answers =
from
ZEO: that is, they'll just hang and you won't know what's happening =
since
ZEO logs nothing about this weirdness even with =
"STUPID_LOG_SEVERITY=3D-300".
I wasted more than a week to figure out what was going on.=20

Hope this helps.

Wankyu Choi
---------------------------------------------------------------
  Wankyu Choi
  CEO/President
  NeoQuest Communications, Inc.
  http://www.zoper.net
  http://www.neoboard.net
---------------------------------------------------------------  =20


-----Original Message-----
From: zope-admin@zope.org [mailto:zope-admin@zope.org] On Behalf Of Paul
Winkler
Sent: Wednesday, April 30, 2003 11:00 AM
To: zope@zope.org
Cc: tdickenson@geminidataloggers.com
Subject: [Zope] DirectoryStorage & ZEO... how?


i feel like i'm missing something terribly obvious...

* with FileStorage, i used a custom_zodb.py to run zope as a zeo client.

* DS includes an example custom_zodb.py apparently for running zope =
without
zeo and with DS.

... but how do i get the zeo server to use DS?

i've searched the docs and the DS mailing list archive and found =
nothing.
but apparently people are doing it.=20
i guess that i'm to use the -S argument to ZEO/start.py but
i don't understand the docstring. what the heck is storage_name?

--=20

Paul Winkler
home:  http://www.slinkp.com
"Muppet Labs, where the future is made - today!"

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