iRedMail installs netdata with the official binary package.
To update netdata on Linux, just download new version of the prebuilt package from its github page, then run it:
chmod +x netdata-latest.gz.run
./netdata-latest.gz.run --accept
That's it.
Please upgrade netdata with FreeBSD ports tree.
To opt-out from sending anonymous statistics, please create empty file
.opt-out-from-anonymous-statistics
:
/opt/netdata/etc/netdata/.opt-out-from-anonymous-statistics
./usr/local/etc/netdata/.opt-out-from-anonymous-statistics
.netdata will detect this file, if exists, no anonymous statistics will be sent.