I create a single service with an instance for each mongrel. The
start exec_method calls a shell script that first deletes the pid file
if it exists then runs mongrel directly with all the options as
arguments, no config file. Right now we are just using :kill in the
stop exec_method. Note the property group for the authorizations in
the service section. This is what is used to allow a specific non
root user to control this service via svcadm in conjunction with an
entry in /etc/user_attr. So far it's working pretty well but we still
need to make some adjustments, like telling the system to back off a
bit and send a notification if mongrel won't start, setting resource
limits, etc..
/etc/user_attr:
www::::auths=solaris.smf.manage.mongrel
Sample config with one instance:
<service_bundle type='manifest' name='Mongrel'>
<service name='network/mongrel' type='service' version='0'>
<dependency name='fs' grouping='require_all' restart_on='none'
type='service'>
<service_fmri value='svc:/system/filesystem/local'/>
</dependency>
<dependency name='net' grouping='require_all' restart_on='none'
type='service'>
<service_fmri value='svc:/network/loopback'/>
</dependency>
<dependent name='mongrel_multi-user' restart_on='none'
grouping='optional_all'>
<service_fmri value='svc:/milestone/multi-user'/>
</dependent>
<property_group name='general' type='framework'>
<propval name='action_authorization' type='astring'
value='solaris.smf.manage.mongrel' />
<propval name='value_authorization' type='astring'
value='solaris.smf.manage.mongrel' />
</property_group>
<instance name='p8000' enabled='false'>
<exec_method name='start' type='method'
exec='/opt/csw/lib/svc/method/svc-mongrel 8000' timeout_seconds='60'>
<method_context working_directory='/opt/local/www/rails/staging/current'>
<method_credential user='mongrel' group='www' />
<method_environment>
<envvar name="PATH" value="/usr/bin:/bin:/opt/csw/bin" />
</method_environment>
</method_context>
</exec_method>
<exec_method name='stop' type='method' exec=':kill' timeout_seconds='60'>
<method_context/>
</exec_method>
<property_group name='mongrel' type='application'>
<stability value='Evolving' />
<propval name='ssl' type='boolean' value='false' />
</property_group>
<property_group name='startd' type='framework'>
<!-- sub-process core dumps shouldn't restart session -->
<propval name='ignore_error' type='astring' value='core,signal' />
</property_group>
</instance>
<!-- more instances here -->
<stability value='Evolving' />
</service>
</service_bundle>
svc-mongrel:
#!/sbin/sh
. /lib/svc/share/smf_include.sh
PORT=$1
ENVIRONMENT=staging
CWD=/opt/local/www/rails/$ENVIRONMENT/current
LOGFILE=/opt/local/www/rails/$ENVIRONMENT/shared/log/mongrel_$PORT.log
PIDFILE=/opt/local/www/rails/$ENVIRONMENT/shared/pids/mongrel_$PORT.pid
DOCROOT=$CWD/public
IP=10.1.1.4
USER=mongrel
GROUP=www
/bin/rm -f $PIDFILE
/opt/csw/bin/mongrel_rails start -d -e $ENVIRONMENT -p $PORT -a $IP -l
$LOGFILE -r $DOCROOT -c $CWD --user $USER --group $GROUP -P $PIDFILE
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