Install Netdata on Synology

The documentation previously recommended installing the Debian Chroot package from the Synology community package sources and then running Netdata from within the chroot. This does not work, as the chroot environment does not have access to /proc, and therefore exposes very few metrics to Netdata. Additionally, this issue, still open as of 2018/06/24, indicates that the Debian Chroot package is not suitable for DSM versions greater than version 5 and may corrupt system libraries and render the NAS unable to boot.

The good news is that the 64-bit static installer works fine if your NAS is one that uses the amd64 architecture. It will install the content into /opt/netdata, making future removal safe and simple.

Run as netdata user

When Netdata is first installed, it will run as root. This may or may not be acceptable for you, and since other installations run it as the netdata user, you might wish to do the same. This requires some extra work:

  1. Creat a group netdata via the Synology group interface. Give it no access to anything.
  2. Create a user netdata via the Synology user interface. Give it no access to anything and a random password. Assign the user to the netdata group. Netdata will chuid to this user when running.
  3. Change ownership of the following directories, as defined in Netdata Security:
chown -R root:netdata /opt/netdata/usr/share/netdata
chown -R netdata:netdata /opt/netdata/var/lib/netdata /opt/netdata/var/cache/netdata
chown -R netdata:root /opt/netdata/var/log/netdata

Create startup script

Additionally, as of 2018/06/24, the Netdata installer doesn't recognize DSM as an operating system, so no init script is installed. You'll have to do this manually:

  1. Add this file as /etc/rc.netdata. Make it executable with chmod 0755 /etc/rc.netdata.
  2. Add or edit /etc/rc.local and add a line calling /etc/rc.netdata to have it start on boot:
# Netdata startup
[ -x /etc/rc.netdata ] && /etc/rc.netdata start
  1. Make sure /etc/rc.local is executable: chmod 0755 /etc/rc.netdata.
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