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ci-env.md

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CI environment

An ancillary project, orchestrator-ci-env, provides a MySQL replication environment with which one may evaluate/test orchestrator. Use cases:

  • You want to check orchestrator's behavior on a testing environment.
  • You want to test failover and master discovery.
  • You want to develop changes to orchestrator and require a reproducible environment.

You may do all of the above if you already have some staging environment with a MySQL replication topology, or a dbdeployer setup, but orchestrator-ci-env offers a Docker-based environment, reproducible and dependency-free.

orchestrator-ci-env is the same environment used in system CI and in Dockerfile.system.

Setup

Clone orchestrator-ci-env via SSH or HTTPS:

$ git clone git@github.com:openark/orchestrator-ci-env.git

or

$ git clone https://github.com/openark/orchestrator-ci-env.git

Run environment

Requirement: Docker.

$ cd orchestrator-ci-env
$ script/dock

This will build and run an environment which conists of:

Docker will expose these ports:

  • 10111, 10112, 10113, 10114: MySQL hosts in a replication topology. Initially, 10111 is the master.
  • 13306: exposed by HAProxy and routed to current MySQL topology master.

Run orchestrator with environment

Assuming orchestrator is built into bin/orchestrator (./script/build if not):

$ bin/orchestrator --config=conf/orchestrator-ci-env.conf.json --debug http

conf/orchestrator-ci-env.conf.json is designed to work with orchestrator-ci-env.

You may choose to change the value of SQLite3DataFile, which is by default on /tmp.

Running system tests with environment

While orchestrator is running (see above), open another terminal in orchestrator's repo path.

Run:

$ ./tests/system/test.sh

for all tests, or

$ ./tests/system/test.sh <name-or-regex>

for a specific test, e.g. ./tests/system/test.sh relocate-single

Destructive tests (e.g. a failover) require a full rebuild of the replication topology. The system tests CI runs both orchestrator and the ci-env together, and the tests can instruct the ci-env to rebuild replication. However, if you run ci-env on a local docker, your tests cannot instruct a replication rebuild. You will need to manually run ./script/deploy-replication on your ci-env container at the end of a destructive test.