Binder

Triton/Manta DNS server over Apache Zookeeper.

This repository is part of the Joyent Triton project. See the contribution guidelines -- Triton does not use GitHub PRs -- and general documentation at the main Triton project page.

This repo contains Binder, which is a DNS server implemented on top of ZooKeeper. Hosts use Registrar to register themselves into DNS. Binder's behavior, use in service discovery, and the ZooKeeper record format are described in the Registrar documentation.

Configuration

As binder is expected to run on the same host as a ZooKeeper server, it is hard-coded to talk to ::1 to find ZK. You can override this by setting the environment variable ZK_HOST to some other IP address. This is really only for testing. Also, it has a fixed in-memory cache of 1000 elements and 60s expiration time over ZK. These can be overriden with the command line flags of -s and -a, respectively. Although, again, it's defaulted, and hard-coded in SMF that way. There is no config file for binder.

Troubleshooting

You can hack the SMF manifest in /opt/smartdc/binder/smf/manifests/binder.xml and add -d 2 to spew all nature of logs via SMF.

Development

To run the binder server:

git clone git@github.com:joyent/binder.git
cd binder
git submodule update --init
make all
. ./env.sh
ZK_HOST= node main.js 2>&1 | bunyan

from https://github.com/joyent/binder