topic Re: Script Help. in Operating System - HP-UX

Script Help.

joe_91 — Wed, 19 Jun 2002 15:07:06 GMT

Hi All:

We have a script to push the homedir's for nis and runs on the master server. There is this portion of the code i am having problem with. It reads a hosfile and pushes the dir's to them. This is the hostfile

MASTER=tx274
SLAVE1=tx275
SLAVE2=tx276
SLAVE3=tx277
I have attached the portion of the script which does the pushing of the dir's which doesn't function. I think this was written with one SLAVE entry in the above hostfile.now we have 3 entries. Can someone help please?

Thanks
Joe.

Re: Script Help.

Justo Exposito — Wed, 19 Jun 2002 15:16:52 GMT

Hi Joe,

Try this changes:

for cur_line in hostfile |
do
if `echo ${cur_line} | grep "^SLAVE" > /dev/null`
then
SLAVE=`echo ${cur_line}| cut -d"=" -f2`
remsh ${SLAVE} hostname > /dev/null
if test $? -eq 0
then
echo "Copying password file to the Slave - $SLAVE."
rcp ${PASSWD} ${SLAVE}:${PASSWD}
else
echo "\n\n\t\tUnable to reach the Slave - ${SLAVE}.\n\n"
fi
fi
done

Regards,

Justo.

Re: Script Help.

Justo Exposito — Wed, 19 Jun 2002 15:18:19 GMT

Hi Again,

Sorry a mistake:
for cur_line in hostfile |
do

This is the good lines:
for cur_line in hostfile
do

Regards,

Justo.

Re: Script Help.

Tim D Fulford — Wed, 19 Jun 2002 15:24:13 GMT

Unless I'm much mistaken you are trying to copy the /etc/passwd file to all the slaves... You do not need to do this if you have nis yp_xfr (I think) can do it or just re-make the NIS DB & the passwd file will be exported to all the slaves (ypmake)

tim

Re: Script Help.

Tim D Fulford — Wed, 19 Jun 2002 15:30:19 GMT

Here's my version

#!/usr/bin/ksh
PASWD=/etc/passwd

for line in $(cat hostfile)
do
slaveyn=$(echo $line | awk -F"=" 'BEGIN{f=0}; $1=/SLAVE/{f=1}; END{print
f}')
host=$(echo $line | cut -d"=" -f2)
if [ $slaveyn -eq 1 ]
then
remsh $host /usr/bin/hostname >/dev/null 2>&1
if [ $? -eq 0 ]
then
echo "Copying password file to slave - $host"
rcp ${PASWD} $host:${PASWD}
else
echo "unable to reach slave $host"
fi
fi
done

Tim

Re: Script Help.

Tim D Fulford — Wed, 19 Jun 2002 15:33:32 GMT

I too made a mistake (I wasn't going to test it copying 'round passwd files!!!)

in awk statement I mean ... $1~/SLAVE/{.... not =

Tim

Re: Script Help.

joe_91 — Wed, 19 Jun 2002 15:52:21 GMT

Hi:

I am still getting only tx277 as $SLAVE. Will that help. I think it should capture all the 3 slaves and that was the problem.

Thanks
Joe.

Re: Script Help.

Jordan Bean — Wed, 19 Jun 2002 17:23:07 GMT

Try this.

#!/usr/bin/sh
grep ^SLAVE hostfile | while IFS='=' read junk slave comment
do
if remsh $slave hostname 0<&- 1>&2
then
echo "Copying password file to slave $slave."
else
echo "Unable to reach slave $slave."
fi
done 2> /dev/null

Notice that we are closing stdin to remsh; Otherwise it will slurp up the rest of the grep stream.

Re: Script Help.

Jordan Bean — Wed, 19 Jun 2002 17:25:42 GMT

Oh, I forgot the `rcp /etc/passwd ${slave}:/etc/passwd` part... Sorry.