D NIS ypservers Update Scripts

This appendix provides the following scripts for updating the ypservers map:

addypserver -- Adds a slave server

rmypserver -- Removes a slave server

D.1 Add Slave Server Script

Use the following procedure to create the addypserver script on an NIS master server:

Create an addypserver file in the /var/yp directory and type the following lines exactly as shown:

#!/bin/sh
PATH="/usr/bin:/var/yp:$PATH"
if [ $# != 1 ]; then
        echo "usage: $0 server"; exit 1
fi
DOMAIN=`/usr/sbin/rcmgr get NIS_DOMAIN`
cd /var/yp
echo "
Adding $1 to ypservers map for domain DOMAIN ..."
(/var/yp/makedbm -u $DOMAIN/ypservers;\
echo $1 $1) | /var/yp/makedbm - tmpmap
mv tmpmap.dir $DOMAIN/ypservers.dir
mv tmpmap.pag $DOMAIN/ypservers.pag
yppush ypservers

Set the permissions to 700, using the chmod command as follows:
```
# chmod 700 /var/yp/addypserver
```

To add host1 to the ypservers map, enter the following command:

# /var/yp/addypserver host1

You still need to edit the NIS master server's master hosts file and add an entry for the slave server, if it is not already in the hosts file. Then, update and distribute the map by entering the make command. See Section 7.4.1 for more information.

D.2 Remove Slave Server Script

Use the following procedure to create the rmypserver script on an NIS master server:

Create a rmypserver file in the /var/yp directory and type the following lines exactly as shown:

#!/bin/sh
PATH="/usr/bin:/var/yp:$PATH"
if [ $# != 1 ]; then
        echo "usage: $0 server"; exit 1
fi
DOMAIN=`/usr/sbin/rcmgr get NIS_DOMAIN`
cd /var/yp
echo "
Removing $1 from ypservers map for domain DOMAIN ..."
/var/yp/makedbm -u $DOMAIN/ypservers | grep -v $1 \
| /var/yp/makedbm - tmpmap
mv tmpmap.dir $DOMAIN/ypservers.dir
mv tmpmap.pag $DOMAIN/ypservers.pag
yppush ypservers

Set the permissions to 700, using the chmod command as follows:
```
# chmod 700 /var/yp/rmypserver
```

To remove host1 from the ypservers map, enter the following command:

# /var/yp/rmypserver host1