How can I update new release weathermap?

[zy_milan]

After updated from 0.81 to 0.82, I create the link between node and can't select data-source . In 0.81, there is data-source selection after the blank.

When I reinstall cacti, how can I backup the devices and rrd files?

[Howie]

After updated from 0.81 to 0.82, I create the link between node and can't select data-source . In 0.81, there is data-source selection after the blank.

When I reinstall cacti, how can I backup the devices and rrd files?

To update weathermap, you need to move all the *.php files in the weathermap directory out of the way, then unzip the new version over the top. You shouldn't need to touch the rest of Cacti at all.

The only file you MIGHT need to update is to copy the editor-config.php-dist to editor-config.php and change the path to Cacti inside it. If that path is wrong, then you would not get the "pick from Cacti" option.