SNMP queries, remote data retrieval is an important part of creating Cacti performance graphs. You may get into a situation where SNMP data retrieval is not possible and you only have SSH access to a device. Let's assume you want to graph the I/O performance of some server drives using the
iostat utility. You will now learn the different steps it takes to create such a remote SSH data input method.
As a preparation for the data input method, you will need to create two different scripts and set up public key authentication.
The remote script will execute local commands and preparse/prepare the data on the remote system. The data will be returned to the local script. If ...