SMF does not used the /etc/rc?.d/ directories we know and love, it has a set of mlestones, e.g. single-user and multi-user that replicate the run levels. To dictate the order that the services are started in (some may start in parallel) each service has dependencies, e.g. the DNS client will only start once networking has been established and local mounts have been made, a service can also have dependents, e.g. don't allow dtlogin to start until I (e.g. LDAP) am running, these can be listed by running:
and
To see the state of all the services you may run:
and to see what have failed you may run:
To start a service you can run:
and to stop it you can run:
A "-t" parameter makes the change of state temporary (the service will restart on the next reboot rather than staying enabled/disabled) and the "-r" parameter ensures that when starting a service that requires dependencies that they are all started also.
The services are defined using xml files and call scripts very like those that used to appear in /etc/init.d but can also ensure that if a daemon stops running that it gets restarted.
1. The default run level on a machine that uses the rc scripts is changeable and for a Linux type machine it is 3 for a machine that does not require a GUI (e.g. a web or database server) and is 5 for machine that does (usually desktop machines). The default run level is defined in the /etc/inittab file.
2. Solaris machines (pre SMF) run through all the scripts from rcS.d to rc3.d (or higher), Linux machines (well RedHat anyway) run only those scripts in the default run level's directory which is why you will see links for some services in rc1.d, rc2.d and rc3.d. The S* scripts are run on boot up and the K* scripts on shutdown, changing the S or K to s or k will cause those scripts to be not run.
3. The rc?.d links are usually created by the package or manually on a Solaris system, unlike Linux where chkconfig looks for the chkconfig line in the /etc/init.d script to tell it what links to create for you.
4. The script header you show will cause chkconfig to create S20* and K20* links in the /etc/rc3.d directory only for the service you have installed into /etc/init.d when you run:
Where <servicename> is the name of the script you have installed into /etc/init.d on a Lnux machine but not on a Solaris machine.
HTH
Last edited by TonyFullerMalv; 05-16-2010 at 07:19 PM..
Reason: Corrected book up to boot up!
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