Using Run Control Scripts

Using Run Control Scripts
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How to Use a Run Control Script to Stop or Start a Legacy Service

One advantage of having individual scripts for each run level is that you can run scripts in the /etc/init.d directory individually to stop system services without changing a system's run level.

Become superuser or assume a role that includes the Service Management rights profile.

Roles contain authorizations and privileged commands. For more information about roles, see Configuring RBAC in System Administration Guide: Security Services .
Stop the system service.
```
# /etc/init.d/
filename stop
```
Restart the system service.
```
# /etc/init.d/
filename start
```
Verify that the service has been stopped or started.
```
# pgrep -f service
```

Example 15.15. Using a Run Control Script to Stop or Start a Service

For example, you can stop the NFS server daemons by typing the following:

# /etc/init.d/nfs.server stop
# pgrep -f nfs

Then, you can restart the NFS server daemons by typing the following:

# /etc/init.d/nfs.server start
# pgrep -f nfs
101773
101750
102053
101748
101793
102114
# pgrep -f nfs -d, | xargs ps -fp
     UID    PID   PPID   C    STIME TTY         TIME CMD
  daemon 101748      1   0   Sep 01 ?           0:06 /usr/lib/nfs/nfsmapid
  daemon 101750      1   0   Sep 01 ?          26:27 /usr/lib/nfs/lockd
  daemon 101773      1   0   Sep 01 ?           5:27 /usr/lib/nfs/statd
    root 101793      1   0   Sep 01 ?          19:42 /usr/lib/nfs/mountd
  daemon 102053      1   0   Sep 01 ?        2270:37 /usr/lib/nfs/nfsd
  daemon 102114      1   0   Sep 01 ?           0:35 /usr/lib/nfs/nfs4cbd

How to Add a Run Control Script

If you want to add a run control script to start and stop a service, copy the script into the /etc/init.d directory. Then, create links in the rc n .d directory where you want the service to start and stop.

See the README file in each /etc/rc n .d directory for more information on naming run control scripts. The following procedure describes how to add a run control script.

Become superuser or assume a role that includes the Service Management rights profile.

Roles contain authorizations and privileged commands. For more information about roles, see Configuring RBAC in System Administration Guide: Security Services .

Add the script to the /etc/init.d directory.

# cp filename /etc/init.d
# chmod 0744 /etc/init.d/
filename
# chown root:sys /etc/init.d/
filename

Create links to the appropriate rc n .d directory.

# cd /etc/init.d
# ln filename /etc/rc2.d/
Snnfilename
# ln filename /etc/rc
n
.d/
Knnfilename

Verify that the script has links in the specified directories.

# ls /etc/init.d/*filename
 /etc/rc2.d/*filename
 /etc/rc
n
.d/*filename

Example 15.16. Adding a Run Control Script

The following example shows how to add a run control script for the xyz service.

# cp xyz /etc/init.d
# chmod 0744 /etc/init.d/xyz
# chown root:sys /etc/init.d/xyz
# cd /etc/init.d
# ln xyz /etc/rc2.d/S99xyz
# ln xyz /etc/rc0.d/K99xyz
# ls /etc/init.d/*xyz /etc/rc2.d/*xyz /etc/rc0.d/*xyz

How to Disable a Run Control Script

You can disable a run control script by renaming it with an underscore (_) at the beginning of the file name. Files that begin with an underscore or dot are not executed. If you copy a file by adding a suffix to it, both files will be run.

Become superuser or assume a role that includes the Service Management rights profile.

Roles contain authorizations and privileged commands. For more information about roles, see Configuring RBAC in System Administration Guide: Security Services .
Rename the script by adding an underscore (_) to the beginning of the new file.
```
# cd /etc/rc
n
.d
# mv filename _filename
```
Verify that the script has been renamed.
```
# ls _*
_filename
```

Example 15.17. Disabling a Run Control Script

The following example shows how to rename the S99datainit script.

# cd /etc/rc2.d
# mv S99datainit _S99datainit
# ls _*
_S99datainit

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