To do that, first we will check the ownership details for the RRD files. On the old server: Activating the Poller In step 1, we has disabled the Cacti poller in both servers.
As the migration is completed, we will enable the poller in the new server. If you want to hold on to the old server for the time being, you could enable the poller in the old server too. If enabled, both servers should keep polling and populating the graphs, which should be identical. Accessing the New Server Now that the migration is completed, you can access Cacti by going to http: Old Server Graphs Figure 2: In case you run into any issues, you can check the following.
First, remember that patience is the key. I have seen Cacti graphs taking over 15 minutes to start populating. Don't start troubleshooting too soon.
Check if the cron daemon is running. Without cron daemon, graphs will not be updated. Check if the RRD files are writable by Cacti. Verify that both servers are using the same poller. For example, if the old server was using cacti-spine as the poller, the new server should do the same.
Finally, the Cacti log file is always a useful source of information for troubleshooting. To make Cacti logs updated with relevant data, change the logging level to at least 'Medium'. To sum up, we can easily migrate Cacti graphs from one server to another. The graphs are generated based on the data contained in the RRD files. Enter your email address below, and we will deliver our Linux posts straight to your email box, for free.
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