Monitor for SFTP

Hey guys,

I followed hoolio's approach (thanks for you idea) to build a tiny monitor and this seems to be working fine for me.

Here is the string which is executed within external monitor:

sftp -o PubkeyAuthentication=yes -o IdentityFile=/root/.ssh/${PKEY} -b /home/${BFILE} ${USER}@${HOST} | grep ${MATCH} 2>&1 > /dev/null

Arguments here:

`PKEY` - private key file name for SFTP authentication
`BFILE` - batch file specifing which commands to execute after login
`HOST` - ip address of SFTP server
`DEBUG` - 0/1 = on/off
`MATCH` - a string we are looking for to check health
`USER` - account to access SFTP
`

In CLI it looks like:

sftp  -o PubkeyAuthentication=yes -o IdentityFile=/root/.ssh/sftpmonitor_rsa -b /home/sftpmonitor.input f5_monitor@10.128.192.192

Batch file

sftpmonitor.input

dir
bye

SFTP administrator created a file named

f5_health