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Shell script to find filesystem capacity on 50 servers

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# 1  
Old 05-20-2011
Shell script to find filesystem capacity on 50 servers
Hi all,
I am new to Unix and I want to write a shell script in a jumpbox for finding the filesystem capacity on 50 unix servers ( by ssh ) and then email the result in HTML format with server name and capacity % to a specific outlook distribution list.

any suggestion would be of great help.
# 2  
Old 05-20-2011
We won't be able to write the entire script for you. We will give the key idea and you can develop on it.

First executing a command in the remote server.

Code:
cgi@tioman> (/home/cgi) $ ssh cgi@123.122.32.22 -C "df -h"
The authenticity of host '123.122.32.22 (123.122.32.22)' can't be established.
RSA key fingerprint is 72:a9:6d:a6:1b:fc:51:bf:06:bd:7f:35:2c:93:61:ee.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '123.122.32.22' (RSA) to the list of known hosts.
Password:
Filesystem             size   used  avail capacity  Mounted on
/dev/md/dsk/d30         18G    13G   4.8G    74%    /
/devices                 0K     0K     0K     0%    /devices
ctfs                     0K     0K     0K     0%    /system/contract
proc                     0K     0K     0K     0%    /proc
mnttab                   0K     0K     0K     0%    /etc/mnttab
swap                   1.5G   1.3M   1.5G     1%    /etc/svc/volatile
objfs                    0K     0K     0K     0%    /system/object
fd                       0K     0K     0K     0%    /dev/fd
/dev/md/dsk/d34        9.3G   3.7G   5.5G    40%    /var
swap                   1.5G   2.9M   1.5G     1%    /tmp
swap                   1.5G    40K   1.5G     1%    /var/run
/dev/md/dsk/d5          65G    22G    42G    35%    /data
/dev/md/dsk/d33        2.9G   1.1G   1.7G    40%    /home
cgi@tioman> (/home/cgi) $

To avoid typing password, you can use ssh keys.

Sending mails can be done using mailx command or anyother mail utilities. First of all, you try to get the information from all your servers.
1. make a text file which will have list of the servers.
2. Try to establish ssh key authentication between your machine to all servers.
3. Loop through the server list and execute the ssh command and store the output in a file.
4. Mail the file.
This User Gave Thanks to kumaran_5555 For This Post:
amitbisht9
# 3  
Old 05-28-2011
@Kumar : below is the code of my script-
Code:
vtierfile=/home/m69642/vtierlist.txt
i=0
#################array of servers/usage######################
for server in `cat $vtierfile`;
do
  vtier[$i]=$server
  echo server=${vtier[$i]
  usage[$i]=`sshcmd -u ${vtier[$i]} -s ${vtier[$i]} df -k . | awk '{ print $5 " " $6 }' | cut -d " " -f1|tail -1`
  echo ${usage[$i]}
  i=$i+1
done

Output :
Code:
server=server1
server=server2
server=server3
server=server4

but it is not giving proper result.
Last edited by Scott; 05-28-2011 at 12:45 PM.. Reason: Please use code tags
# 4  
Old 05-30-2011
Can you whether the following part is working fine at your prompt.
I couldn't check that part as sshcmd isn't installed in my pc.

Code:
sshcmd -u ${vtier[$i]} -s ${vtier[$i]} df -k . | awk '{ print $5 " " $6 }' | cut -d " " -f1|tail -1

If it doesn't work may we could try a different solution.
This User Gave Thanks to kumaran_5555 For This Post:
amitbisht9
# 5  
Old 05-31-2011
thnks a lot Kumar....
I got my desired result..
can you also please guide me how to send the result which is stored in an array to email in html foemat...I know the email part..but not quite familiar with html part...
for example I want my result in email as:

server name disk usage
server1 40%
server2 30%
server3 10%

like this....
your help would be highly appreciated...
# 6  
Old 05-31-2011
Write your normal html format with some sample content in a notepad and post here.

Then we will see how to convert the output into that html using a script.

Something like below
Code:
<html>
<body>

<h1>Server 1</h1>
<h2>Disk one</h2>

</body>
</html>

We need the html template you wanted to use
# 7  
Old 05-31-2011
post your final code and and the output, which you are getting.. we will help you to create a html report
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