I have a scenario where I need to monitor the mount points of multiple servers through single script. Currently I am stuck at this point:

```
#!/bin/bash
ser1 = `ssh server1 df -F ext3 -k | \
        grep -vE '^Filesystem|tmpfs|cdrom' | \
        grep "/$" | awk '{ print $4}' | \
        cut -d'%' -f1`

echo $ser1

```

While running the script, the prompt asks for password. I want to add multiple servers in the list. Is it possible to automatically fetch the utilization without giving passwords every time?