free space

Sunday, March 15, 2009

Solaris Service Manager


For SVR4-based Unix operating systems the services and applications executed during a normal boot are controlled through a combination of the run-level selected and the scripts located within the /etc/rcX.d directory. For example, when entering run-level 3 (the default), all the scripts in /etc/rc3.d are executed, in numbered order, to start up different services like NFS or Apache.

From an execution perspective the process is time-consuming, and from a technical perspective the system is basic and laced with difficulties. For example, the NFS service relies on the system having configured networking (another script), but it is up to the administrator to ensure that the NFS script runs after the networking script. Getting the order and sequence of the scripts correct is therefore vital. The script model also had problems in that the script would run once at boot time, but a failure during execution would need to be addressed by an administrator.

The Service Management Facility (SMF) addresses these problems through a more extensive method of configuration that allows you specify prerequisites (which implies execution order) and the necessary methods to start, stop and restart services. As an active management facility, rather than script execution process, the SMF becomes an much more integral part of running services within Solaris.

0 comments:

F

free counters

sponsors

haa

sponsors

sponsors

haaaaa

visit

 

console operating system linux solaris solaris10 solari rachel solari sun microsystems linx | Copyright 2009 Tüm Hakları Saklıdır | Blogger Template by GoogleBoy ve anakafa | Sponsored by Noow!