file

InfraKit Instance Plugin - File

This is a simple Instance Plugin that can accept any configuration and writes the configuration to disk as provision. It is useful for testing and debugging.

Building

When you do make -k all in the top level directory, the CLI binary will be built and can be found as ./infrakit/cli from the project's top level directory.

Usage

$ ./infrakit/file -h
File instance plugin

Usage:
  ./infrakit/file [flags]
  ./infrakit/file [command]

Available Commands:
  version     print build version information

Flags:
      --dir string      Dir for storing the files (default "/var/folders/rq/g0cj3y7n511c10p2kbz5q33w0000gn/T/")
      --listen string   listen address (unix or tcp) for the control endpoint (default "unix:///run/infrakit/plugins/instance-file.sock")
      --log int         Logging level. 0 is least verbose. Max is 5 (default 4)

Use "./infrakit/file [command] --help" for more information about a command.

The plugin can be started without any arguments and will default to using unix socket in /run/infrakit/plugins for communications with the CLI and other plugins:

$ ./infrakit/file --dir=./test
INFO[0000] Starting plugin
INFO[0000] Listening on: unix:///run/infrakit/plugins/instance-file.sock
INFO[0000] listener protocol= unix addr= /run/infrakit/plugins/instance-file.sock err= <nil>

This starts the plugin using ./test as directory and instance-file as name.

You can give the another plugin instance a different name via the listen flag:

$ ./infrakit/file --listen=unix:///run/infrakit/plugins/another-file.sock --dir=./test
INFO[0000] Starting plugin
INFO[0000] Listening on: unix:///run/infrakit/plugins/another-file.sock
INFO[0000] listener protocol= unix addr= /run/infrakit/plugins/another-file.sock err= <nil>

Using the CLI, it you can see

$ ./infrakit/cli plugin ls
Plugins:
NAME                	LISTEN
group               	unix:///run/infrakit/plugins/group.sock
instance-file       	unix:///run/infrakit/plugins/instance-file.sock
another-file        	unix:///run/infrakit/plugins/another-file.sock
flavor-zookeeper    	unix:///run/infrakit/plugins/flavor-zookeeper.sock

Note that there are two file instance plugins running now with different names.

Default Directory for Plugin Discovery

All InfraKit plugins will by default open the unix socket located at /run/infrakit/plugins. Make sure this directory exists on your host:

mkdir -p /run/infrakit/plugins
chmod 777 /run/infrakit/plugins

See the CLI Doc for details on accessing the instance plugin via CLI.