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README.md

Orchestrator Vagrant Instructions

Orchestrator's Vagrant defaults to installing five (5) CentOS 6.6 boxes in the following replication topology, with a separate "admin" node:

db1<->db2
 |     |
 v     v
db3   db4

It is possible to override what gets installed by the use of environmental variables:

VAGRANT_SERVER_URL defaults to 'https://atlas.hashicorp.com'
VAGRANT_DEFAULT_PROVIDER defaults to 'virtualbox'
VAGRANT_BOX defaults to 'nrel/CentOS-6.6-x86_64'

The MySQL configuration is such that it is the minimum required to set up replication. For testing such features as delayed replication, RBR/SBR, GTID, it is simply a matter of editing the vagrant/dbX-my.cnf before running the vagrant up command.

FAQ

Q: By default, there are still a lot of steps that I have to do within each virtual machine to get going

A: That is by design. Vagrant will execute db-post-install.sh, dbX-post-install.sh, and admin-post-install.sh in the vagrant/ directory (they are .gitignore'd) for any custom work that you want to have done (i.e. build Orchestrator, etc etc)

Q: I run some other distribution of Linux. Why don't you support that?

A: Pull Requests are welcome! If you update any of the vagrant/*.sh scripts, they must work with at least CentOS 6 and Ubuntu 12

Tips & Tricks

Specify GTID Usage

If you want to use GTID Replication, you must update all of the vagrant/dbX-my.cnf files with the following options in [mysqld]:

enforce-gtid-consistency
gtid-mode=ON

Specify RBR/SBR

vagrant/dbX-my.cnf files are copied directly to the virtual machines. If you'd like to specify SBR/RBR/MIXED, add one of the following lines to the [mysqld] section of the my.cnf template:

binlog_format=MIXED
binlog_format=STATEMENT
binlog_format=ROW

This is not global because we want to be able to test out non-standard replication configurations.

Use VMWare vs. VirtualBox

%> export VAGRANT_DEFAULT_PROVIDER='vmware_fusion'
%> vagrant up

CentOS

This is the default. Nothing special is required:

%> vagrant up

Ubuntu

%> export VAGRANT_SERVER_URL="https://atlas.hashicorp.com"
%> export VAGRANT_BOX='chef/ubuntu-12.04'
%> vagrant up

TO DO

  • Support other MySQL's (5.5, 5.7, MariaDB)
  • Support customizable replication configurations
  • Better my.cnf templates