introduction to system maintenance and operation
The manual pages in section 8 contain information related to system operation
and maintenance. They describe commands concerning file systems, such as
. They also
cover commands concerning system backup/recovery, such as
There are pages which document the running of the system, such as
the configuration files located in /etc
Procedures concerning system failure are documented in
Section 8 pages also describe network services and daemons. The rest of this
page discusses some of the main daemons available on the
system, and how to enable/disable them.
System daemons are controlled by the script
, which is in turn
example the HTTP daemon
controlled by the following line from
Thus it is not started by default. To enable or disable daemon processes,
administrators should edit the file
or use the rcctl(8) utility. The
file overrides variable assignments in
. So to
following line might be added to
As can be seen above, this method is also used to specify additional options.
Below is a list of some of the daemons available. For further information, see
and the individual
pages for the utilities.
If using the amd(8)
daemon, go into the /etc/amd
directory and set it
up by renaming master.sample
and editing it and creating other maps as
needed. Alternatively, you can get your maps with YP.
If you are using a name server, check the
file. It may look something
search nts.umn.edu. umn.edu.
lookup file bind
If using a caching name server, add the line "nameserver 127.0.0.1"
In order to make sure the system clock is correct, it may be synchronised with a
number of external sources. The utilities available are:
If this is a BOOTP or DHCP server, edit
as needed. See also
if needed for remote booting.
If you do not have HP computers doing remote booting, do not enable this. See
. Detailed information is available in
If this is an NFS server, edit /etc/exports
A relay daemon,
, able to
run as a load-balancer, application layer gateway, or transparent proxy.
Various daemons for managing routing tables are available:
Several services depend on the RPC portmapper,
running for proper operation. This includes YP and NFS exports, among other
Check the YP domain name with the
command. If necessary, correct it by editing the
script reads this file on boot
to determine and set the domain name. You may also set the running system's
domain name with the
After starting YP client services, perform the remaining YP activation as
In particular, to enable YP passwd support, you'll need to add the following
line to /etc/master.passwd
You do this by using
There are many more YP man pages available to help you. You can find more
information by starting with
section manual page appeared in