Re: Help with chpst -e

[Robin Bowes <robin-lists@robinbowes.com>]

Andras Korn wrote:
> On Mon, Apr 14, 2008 at 03:31:16PM +0100, Robin Bowes wrote:
> 
>> And, it would perhaps be less cluttered to do:
>>
>> #!/bin/sh
>>
>> if [ "$1" != "have-env" ]; then
>>   exec chpst -e ./env "$0" have-env
>> fi
>>
>> exec chpst -u "$LOGUSER" svlogd -tt "$LOGDIR"
> 
> Yes, that's even better. :)
> 

OK, here's another refinement.

This script:

1. Uses chpst -e to set some vars from ./env (if ./env exists)
2. Uses the name of the service dir as the log user and log dir, if
    the are not set in ./env
3. Creates the log dir, if it does not exist, and sets permissions

#!/bin/sh

# if we haven't already done so, check for ./env dir
# if it exists, set some env vars
if [ "$1" != "have-env" ]; then
   if [ -d ./env ]; then
     exec chpst -e ./env "$0" have-env
   fi
fi

LOG_PARENT=/var/log

# Get the service name
logdir=`pwd`
svcdir=${logdir%/log}
SERVICE_NAME=${svcdir##*/}

# Set LOGUSER and LOGDIR to default values if not set in ./env
: ${LOGUSER:=${LOG_PARENT}/${SERVICE_NAME}}
: ${LOGDIR:=${LOG_PARENT}/${SERVICE_NAME}}

# Make sure the log dir exists
if [ ! -e "${LOGDIR}" ]; then
   mkdir -p "${LOGDIR}"
fi
# Set ownership & permissions on the log dir
chown -R ${LOGUSER} "${LOGDIR}"
chmod 750 "${LOGDIR}"
chmod g+s "${LOGDIR}"

# Now run the log process
exec chpst -u "${LOGUSER}" svlogd -tt "${LOGDIR}"


Any thoughts?

R.