Chrony 506 Cannot talk to daemon

Question

I'm having trouble configuring chrony to sync the time between my raspberry pi and a desktop computer in an isolated network.

My raspberry pi's chrony.config file looks like this:

server master
driftfile /var/lib/chrony/chrony.drift
logdir /var/log/chrony
log tracking measurements statistics
keyfile /etc/chrony/chrony.keys
commandkey 1
local stratum 10
initstepslew 20 master
allow 192.168.3.136

The master's chrony.config file, which is the desktop, looks like this:

driftfile /var/lib/chrony/chrony.drift
commandkey 1
keyfile /etc/chrony/chrony.keys
initstepslew 10 192.168.3.155 192.168.3.135
local stratum 8
manual
allow 192.168.3

The master is able to connect, but every time I try to run chronyc tracking on the raspberry pi it says '506 Cannot talk to daemon'.

I have another desktop computer that's also trying to act as a client, and it has the same problem.

What additional information can I provide to help people debug my problem? Unfortunately I don't even know where to start, and I haven't found anything useful on Google.

Solution

I've solved this issue. The problem was that "master" in the slave's .config file was referencing the name of the computer. If you read http://chrony.tuxfamily.org/manual.html#server-directive, you'll see that the server "directive is immediately followed by either the name of the server, or its IP address." Since my computer wasn't actually named "master," I was supposed to use the computer's IP address. This fix allowed me to correctly sync my computers with Chrony.