Setting up orchestrator

I've been testing Orchestrator for MySQL and after following the installation instructions, I kept getting these error and simply could not figure out what was wrong. I opened up a ticket and within a day, the developer got back to me and let me know what was probably wrong. I had setup replication and the MySQL instances with IP address on my local network and never setup DNS entries. Orchestrator used the hostname, not the IP address to setup replication. Every time I issued an orchestrator command, replication would start to fail. Here is the issue I opened on GitHub:

https://github.com/outbrain/orchestrator/issues/249

2016-08-29 01:38:27 ERROR dial tcp: lookup delloptiplex2 on 8.8.8.8:53: no such host
2016-08-29 01:38:27 ERROR dial tcp: lookup delloptiplex1 on 8.8.8.8:53: no such host
2016-08-29 01:38:27 ERROR ReadTopologyInstance(delloptiplex2:3306) show variables like 'maxscale%': dial tcp: lookup delloptiplex2 on 8.8.8.8:53: no such host
2016-08-29 01:38:27 ERROR ReadTopologyInstance(delloptiplex1:3306) show variables like 'maxscale%': dial tcp: lookup delloptiplex1 on 8.8.8.8:53: no such host
2016-08-29 01:38:27 ERROR ReadTopologyInstance(delloptiplex2:3306) Cleanup: dial tcp: lookup delloptiplex2 on 8.8.8.8:53: no such host
2016-08-29 01:38:27 ERROR ReadTopologyInstance(delloptiplex1:3306) Cleanup: dial tcp: lookup delloptiplex1 on 8.8.8.8:53: no such host
2016-08-29 01:38:27 WARNING instance is nil in discoverInstance. key=delloptiplex2:3306, error=Failed ReadTopologyInstance
2016-08-29 01:38:27 WARNING instance is nil in discoverInstance. key=delloptiplex1:3306, error=Failed ReadTopologyInstance
2016-08-29 01:38:27 ERROR dial tcp: lookup delloptiplex0 on 8.8.8.8:53: no such host
2016-08-29 01:38:27 ERROR ReadTopologyInstance(delloptiplex0:3306) show variables like 'maxscale%': dial tcp: lookup delloptiplex0 on 8.8.8.8:53: no such host
2016-08-29 01:38:27 ERROR ReadTopologyInstance(delloptiplex0:3306) Cleanup: dial tcp: lookup delloptiplex0 on 8.8.8.8:53: no such host
2016-08-29 01:38:27 WARNING instance is nil in discoverInstance. key=delloptiplex0:3306, error=Failed ReadTopologyInstance
2016-08-29 01:38:28 DEBUG outdated keys: []
2016-08-29 01:38:29 DEBUG outdated keys: []
2016-08-29 01:38:30 DEBUG outdated keys: []
2016-08-29 01:38:31 DEBUG outdated keys: []
2016-08-29 01:38:32 DEBUG outdated keys: []
2016-08-29 01:38:33 DEBUG outdated keys: [delloptiplex0:3306 delloptiplex1:3306 delloptiplex2:3306]

Next I noticed more errors with Orchestrator:

2016-08-29 16:42:52 ERROR ReadTopologyInstance(delloptiplex1:3306) show slave hosts: Will not resolve empty hostname

I got passed those by adding this into the my.cnf file for each mysql instance:
report_host=my_hostname.example

Here is a good post that illustrates that:
https://avdeo.com/2015/04/19/show-slave-hosts-on-master-not-reporting-hostname/