To enable SSH to yourself on macOS:
$ sudo systemsetup -setremotelogin on
$ cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys
On Linux, you'll need to consult your distribution's documentation.
You can verify that SSH is setup properly by running:
$ ssh localhost echo "All set"
All set!
If you see any output besides "All set", something is not configured correctly.
You should additionally "build" a "binary" by running:
$ bin/build
The resulting "binary" will be named build/customdb.
You must implement a bin/dist command that satisfies the following synopsis:
$ bin/dist BINARY HOSTS
BINARY is the file to be distributed to each host. HOSTS is a file that lists the targets to which BINARY should be distributed. Each line in HOSTS has the following form:
MACHINE:TARGET-PATH
bin/dist must copy the binary to the desired TARGET-PATH on each MACHINE. Note that TARGET-PATH is not necessarily the same on each machine.
The time it takes bin/dist to distribute a binary to a cluster of eight "remote" machines is measured by bin/bench. Note that bin/bench simulates network latencies between the local machine and the hosts listed in HOSTS.
On macOS, you may want to disable remote login like so:
sudo systemsetup -setremotelogin off
You'll also want to delete any files starting with "scp-interview" in your home directory:
rm ~/scp-interview*