Durga Deep Tirunagari wrote:
> Hi Folks,
>
> I have implemented the following manifest and method for the JES Messaging
> Server.
>
> Question 1: the ./start-msg script ( which we use to start the Messaging
> Services ), starts a bunch of processes. eg. imap / pop / http / etc. as
> shown below. I would assume since my manifest uses start-msg. All the
> services ( processes ) started by start-msg should be monitored under SMF ?
>
SMF only monitors services with manifests imported/registered with smf.
> # svcs -p svc:/network/messaging_server:default
> STATE STIME FMRI
> online 11:20:01 svc:/network/messaging_server:default
> 11:19:54 3245 watcher
> 11:19:54 3247 storeds
> 11:19:56 3248 imapd
> 11:19:58 3252 mshttpd
> 11:19:59 3254 imsched
> 11:19:59 3256 dispatcher
> 11:20:00 3259 job_controller
> 11:20:00 3260 tcp_smtp_server
> 11:20:00 3262 tcp_smtp_server
> 11:20:01 3267 AService
> 11:55:00 3293 msprobe
>
> Question 2: So I tried killing one of the processes Example : kill -9 this
> restarts the entire messaging server, Well and good, but say that we don't
> want this to happen. We want only the process that died should be restarted.
> In other words Is it possible for us to have a fine granularity, so that only
> imap gets restarted ?.
>
Ah, fault boundary. If you have fault boundary around each process
then exiting of one process will not
affect the others but if you have fault boundary around all processes
then you will have this problem.
Process contract provide this level of protection.
> Question 3: seems like SMF doesn't recognize pkill, if i repeat the same
> experiment above with pkill imapd it doesn't seem to notify the SMF
>
Have you tried pkill -9 imap?
> Question 4: By looking at the svcadm usage below, my method (msg) has start /
> stop / refresh will this suffice ?.
>
Should. However there are missing dependency values in the first two
dependencies.
> svcadm enable [-rst] ... - enable and online service(s)
> svcadm disable [-st] ... - disable and offline service(s)
> svcadm restart ... - restart specified service(s)
> svcadm refresh ... - re-read service configuration
>
> Please look at the following for more detailed description:
>
> # svcs -xv svc:/network/messaging_server:default
> svc:/network/messaging_server:default (?)
> State: online since Wed Feb 28 11:20:01 2007
> See: /var/svc/log/network-messaging_server:default.log
> Impact: None.
>
> MANIFEST
> - - - - - - - - - - - - - -
>
> # cat /var/svc/manifest/network/messaging.xml
> <?xml version="1.0"?>
>
> <!--
> Sun Java Enterprise System Messaging Server
> -->
>
> < service_bundle type='manifest' name='messaging_server'>
>
> < service
> name='network/messaging_server'
> type='service'
> version='1'>
>
> < create_default_instance enabled='false' />
>
> < single_instance />
>
> < dependency
> name='network-service'
> grouping='require_all'
> restart_on='none'
> type='service'>
>
> < /dependency>
>
> < dependency
> name='fs-local'
> grouping='require_all'
> restart_on='none'
> type='service'>
>
> < /dependency>
>
> < dependency
> name='name-services'
> grouping='require_all'
> restart_on='refresh'
> type='service'>
> < service_fmri value='svc:/milestone/name-services' />
> < /dependency>
>
> < dependency
> name='identity'
> grouping='optional_all'
> restart_on='refresh'
> type='service'>
> < service_fmri value='svc:/system/identity:domain' />
> < /dependency>
>
> < exec_method
> type='method'
> name='start'
> exec='/opt/SUNWmsgsr/lib/svc/method/msg start'
> timeout_seconds='180' >
> < /exec_method>
>
> < exec_method
> type='method'
> name='stop'
> exec='/opt/SUNWmsgsr/lib/svc/method/msg stop'
> timeout_seconds='180' >
> < /exec_method>
>
> < exec_method
> type='method'
> name='refresh'
> exec='/opt/SUNWmsgsr/lib/svc/method/msg refresh'
> timeout_seconds='180' >
> < /exec_method>
>
> < property_group name='application' type='framework'>
> < propval name='messaging_server_base' type='astring'
> value='/opt/SUNWmsgsr' />
> < /property_group>
>
> < stability value='Unstable' />
>
> < /service>
>
> < /service_bundle>
>
> METHOD
> - - - - - - - - -
> # cat /opt/SUNWmsgsr/lib/svc/method/msg
> #!/sbin/sh -x
>
> ## Copy/Rename this script to /opt/csw/lib/svc/method/svnserve
> ## Please change $REPOS to the location of your SVN Repo
>
> . /lib/svc/share/smf_include.sh
>
> parser() {
> PROPERTY=$1
> #VALUE=`svcprop -p ${PROPERTY} ${SMF_FMRI}`
> VALUE=`svcprop -p ${PROPERTY} test_server`
> if [ "${VALUE}" = "\"\"" ] ; then
> VALUE=
> fi
> echo $VALUE
> }
>
> MESSAGING_BASE=`parser application/messaging_server_base`
>
> if [ -z "${MESSAGING_BASE}" ] ; then
> exit $SMF_EXIT_ERR_CONFIG
> fi
>
> case $1 in
>
> 'start')
> ${MESSAGING_BASE}/sbin/start-msg
> if [ $? -ne 0 ] ; then
> exit $SMF_EXIT_ERR_FATAL
> fi
> exit $SMF_EXIT_OK
> ;;
> 'stop')
> ${MESSAGING_BASE}/sbin/stop-msg
> if [ $? -ne 0 ] ; then
> exit $SMF_EXIT_ERR_FATAL
> fi
> exit $SMF_EXIT_OK
> ;;
> 'refresh')
> ${MESSAGING_BASE}/lib/msstart -x
> sleep 5
> ${MESSAGING_BASE}/sbin/start-msg
> if [ $? -ne 0 ] ; then
> exit $SMF_EXIT_ERR_FATAL
> fi
> exit $SMF_EXIT_OK
> ;;
> *)
> echo "Usage: $0 { start | stop | refresh }"
> exit $SMF_EXIT_ERR_FATAL
> ;;
> esac
>
>
> Thanks in Advance
> -dd
>
>
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