smitty

Smitty is an agent written in Go language for twemproxy configured to work with redis sentinel. Smitty's purpose is to extend the HA capabilities of twemproxy even after a redis node has failed.

In order to accomplish this, smitty is continuously monitoring the +switch-master event, then it will update twemproxy configuration files and restart the resource.

A possible scenario:

Install

You can get the latest release that includes a smitty binary, download and run it.

Configuration

smitty needs to be configured through a YAML file specified by the -c command-line argument on process start. An example of configuration file, also included in conf/agent.yml could be this:

twemproxy_pool_name: "root"
twemproxy_config_file: "conf/nutcracker.yml"
sentinel_ip: "127.0.0.1"
sentinel_port: "26379"
restart_command: "/etc/init.d/twemproxy restart"
log_file: "agent.log"

The name

At 3scale, we're an absolute Futurama fanatics, and of course there isn't a better name for an agent that Smitty:

Contributing

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request

License

Licensed under the Apache License, Version 2.0: http://www.apache.org/licenses/LICENSE-2.0

See LICENSE.md