Re: [Zope] My custom scripts for starting/stopping multiple Zope instances

1 Feb 2000

      Jim, many thanks!!

Do you think you can make this into a HOW-TO on Zope.org?

Jim Cain wrote:
...
All,
There have been some questions on here recently on how to start and stop
Zope. The system I've created may not be the fanciest, but it works for
me.
It all begins with the standard SysV script in /etc/rc.d/init.d, which
calls zstart and zstop as appropriate. This is fairly standard, and I
won't bore you with the contents of my script here.
zstart and zstop both read configuration files in /etc/zope.d/*, which
currently contains two files: env and instances. The env file is sourced
to redefine defaults that are set in zstart and zstop. The instances file
describes how to start z2.py. I run ZServer on Red Hat 6.0 from behind
Apache.
Here is env:
---begin---
# /etc/zope.d/env
#
# Set environment variables that differ from default
ZOPE_USER=www
ZOPE_BASE=/usr/local/Zope
---end---
Here is instances:
---begin---
# /etc/zope.d/instances
#
# instance_name ftp_port n_threads use_manager
#
polonius        8022    2       0
gertrude        8023    2       1
---end---
Here is zstart:
---start---
#!/bin/bash
#
# Set default environment
#
ENV_FILE=/etc/zope.d/env
INSTANCES_FILE=/etc/zope.d/instances
ZOPE_USER=nobody
ZOPE_BASE=/opt/Zope
CGIBIN_BASE=/home/httpd/cgi-bin
INSTANCE_BASE=/home/httpd/zope
PS="ps wax"
PYTHON=/usr/local/bin/python
#
# process command line options
#
while getopts "c:" opt
do
        case "$opt" in
                i)      if [ -r "$OPTARG" ]
                        then
                                INSTANCES_FILE=$OPTARG
                        else
                                echo "$0: cannot read $OPTARG"
                                exit 1
                        fi
                        ;;
e)      if [ -r "$OPTARG" ]
                        then
                                ENV_FILE=$OPTARG
                        else
                                echo "$0: cannot read $OPTARG"
                                exit 1
                        fi
                        ;;
?)      echo "Usage: $0 [-i instances-file] [-e environment-file]"
                        exit 3
                        ;;
        esac
done
#
# Read environment file
#
. "$ENV_FILE"
#
# is_running instance_name
#
is_running ()
{
        if $PS | grep -v grep | grep "z2\.py.*$1" > /dev/null 2>&1
        then
                echo yes
        else
                echo no
        fi
}
#
# start_instance instance_name ftp_port n_threads use_manager
#
start_instance ()
{
        if [ "$4" = "0" ]
        then
                manager=
        else
                manager="-Z $INSTANCE_BASE/$1/manager.pid"
        fi
su $ZOPE_USER -c \
                "$PYTHON $ZOPE_BASE/z2.py \
                -p $CGIBIN_BASE/$1/Zope.cgi \
                -w '' -m '' -f $2 -t $3 $manager\
                INSTANCE_HOME=$INSTANCE_BASE/$1 \
                >> $INSTANCE_BASE/$1/z2.log 2>&1 &"
}
###############################################################################
#
# Main program
#
awk 'substr($1, 0, 1) != "#" {print $0}' $INSTANCES_FILE | (
while read line; do
        set $line
        if [ "`is_running $1`" = "yes" ]
        then
                echo "$0: Warning: instance $1 already running"
        else
                start_instance $1 $2 $3 $4
        fi
done)
---end---
Here is zstop:
---begin---
#!/bin/bash
#
# Set default environment
#
ENV_FILE=/etc/zope.d/env
INSTANCES_FILE=/etc/zope.d/instances
ZOPE_USER=nobody
ZOPE_BASE=/usr/local/Zope
CGIBIN_BASE=/home/httpd/cgi-bin
INSTANCE_BASE=/home/httpd/zope
PS="ps wax"
PYTHON=/usr/local/bin/python
#
# process command line options
#
while getopts "c:" opt
do
        case "$opt" in
                i)      if [ -r "$OPTARG" ]
                        then
                                INSTANCES_FILE=$OPTARG
                        else
                                echo "$0: cannot read $OPTARG"
                                exit 1
                        fi
                        ;;
e)      if [ -r "$OPTARG" ]
                        then
                                ENV_FILE=$OPTARG
                        else
                                echo "$0: cannot read $OPTARG"
                                exit 1
                        fi
                        ;;
?)      echo "Usage: $0 [-i instances-file] [-e environment-file]"
                        exit 3
                        ;;
        esac
done
#
# Read environment file
#
. "$ENV_FILE"
#
# stop_instance instance_name use_manager
#
stop_instance ()
{
        if [ "$2" = "0" ]
        then
                pidfile=pcgi.pid
        else
                pidfile=manager.pid
        fi
kill `cat "$INSTANCE_BASE/$1/var/Z2.pid"` # > /dev/null 2>&1
}
###############################################################################
#
# Main program
#
awk 'substr($1, 0, 1) != "#" {print $0}' $INSTANCES_FILE | (
while read line; do
        set $line
        stop_instance $1
done)
---end---
Hope some people find this helpful. If it's helpful enough, maybe I'll
submit it as a HOWTO on Zope.org.
Cheers,
Jim
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