calculate /var/tmp usage for different machines on network

sun_sun · 02-04-2008, 08:20 AM

hi,

i want to list the /var/tmp usage for each machine on the network, through a script.

basically, whenever the script is run, it should tell me the desired thing.

but, how do i calculate this of all the machines on the network. i have 3 platforms(2 different versions of linux(linux, linux redhat), and one another) which have many machines.

any idea how can i proceed on this would be helpful.

thanks,
sun_sun

ilikejam · 02-04-2008, 10:17 AM

Hi.

First (unless you want to type in the passwords each time), set up passwordless SSH keys on all the servers for a user:
http://www.linuxquestions.org/linux/...ation_with_ssh

Then create a list of hostnames you want to query (one hostname per line), and save it as 'hostlist'.

Here's the script I use to do this sort of thing. I call it 'comget'.

Code:

#!/bin/bash

if [ $# -ne 1 ]
   then
   echo "Not enough arguments"
   exit 1
fi


#----Change these to suit----
USERNAME=YourUserNameInHere
HOSTLIST=hostlist
#----------------------------


COMMAND="$1"
COMSANE=`echo "$COMMAND" | sed 's/[^a-zA-Z0-9.,]/-/g'`
SCRATCH="comget.$COMSANE"

if ! mkdir "$SCRATCH"
    then
    echo "Could not create scratch directory $SCRATCH"
    exit 1
fi

NOSSH=""

for go in `cat "$HOSTLIST"`
do
    ssh -o Compression=yes -o PreferredAuthentications=publickey $USERNAME@$go "$COMMAND" > "$SCRATCH/$go" 2> $SCRATCH/$go".err &
done

wait

find "$SCRATCH" -type f -size 0 -name '*.err' -exec rm {} \;

You can run the script with any command as the argument, and it'll run that command on every host in the hostlist file. e.g.

Code:

./comget 'df -k /var'

You'll end up with a directory called comget.XXXXXXX, depending on the command run, which will contain a file (and possibly a .err file too) for each host.

Dave

muha · 02-04-2008, 10:26 AM

snmpwalk/snmp polling on the server and a specialized script on the client that outputs the usage of that directory?

sun_sun · 02-09-2008, 06:37 AM

Late in saying Thanks..that worked ..

Quote:

Originally Posted by ilikejam

Hi.

First (unless you want to type in the passwords each time), set up passwordless SSH keys on all the servers for a user:
http://www.linuxquestions.org/linux/...ation_with_ssh

Then create a list of hostnames you want to query (one hostname per line), and save it as 'hostlist'.

Here's the script I use to do this sort of thing. I call it 'comget'.

Code:

#!/bin/bash

if [ $# -ne 1 ]
   then
   echo "Not enough arguments"
   exit 1
fi


#----Change these to suit----
USERNAME=YourUserNameInHere
HOSTLIST=hostlist
#----------------------------


COMMAND="$1"
COMSANE=`echo "$COMMAND" | sed 's/[^a-zA-Z0-9.,]/-/g'`
SCRATCH="comget.$COMSANE"

if ! mkdir "$SCRATCH"
    then
    echo "Could not create scratch directory $SCRATCH"
    exit 1
fi

NOSSH=""

for go in `cat "$HOSTLIST"`
do
    ssh -o Compression=yes -o PreferredAuthentications=publickey $USERNAME@$go "$COMMAND" > "$SCRATCH/$go" 2> $SCRATCH/$go".err &
done

wait

find "$SCRATCH" -type f -size 0 -name '*.err' -exec rm {} \;

You can run the script with any command as the argument, and it'll run that command on every host in the hostlist file. e.g.

Code:

./comget 'df -k /var'

You'll end up with a directory called comget.XXXXXXX, depending on the command run, which will contain a file (and possibly a .err file too) for each host.

Dave