Example of Sensu remediation.

check_with_remediation.json

{
  "checks": {
    "check_something": {
      "command": "ps aux | grep cron",
      "interval": 60,
      "subscribers": ["application_server"],
      "handlers": ["debug", "irc", "remediator"],
      "remediation": {
        "light_remediation": {
          "occurrences": [1, 2],
          "severities": [1]
        },
        "medium_remediation": {
          "occurrences": ["3-10"],
          "severities": [1]
        },
        "heavy_remediation": {
          "occurrences": ["1+"],
          "severities": [2]
        }
      }
    },
    "light_remediation": {
      "command": "/bin/something",
      "subscribers": [],
      "handlers": ["debug", "irc"],
      "publish": false,
    },
    "medium_remediation": {
      "command": "/bin/something_else",
      "subscribers": [],
      "handlers": ["debug", "irc"],
      "publish": false,
    },
    "heavy_remediation": {
      "command": "sudo reboot",
      "subscribers": [],
      "handlers": ["debug", "irc"],
      "publish": false,
    }
  }
}

This does work actually and its pretty awesome. Took a bit of time to figure out. First off, you need to remove the commas after the "publish": option in the example above. You can see my fork here. You can also view my example here

I noticed in the sensu-api.log that remediation was POSTing to the API using the hostname of the affected server as the subscriber: {"timestamp":"2014-10-06T18:46:16.656712+0000","level":"info","message":"POST /request","remote_address":"127.0.0.1","user_agent":"Ruby","request_method":"POS
T","request_uri":"/request","request_body":"{"check":"heavy_remediation","subscribers":["hostname.example.com"]}"}

I changed the client to subscribe to hostname.example.com and everything started working. I created a gist outlining the steps to get this running.

As a side note: Pretty clever use of the API to accomplish remediation. Great work!

Thanks alot @seth-paxton, the reason why its been failing was because of the subscriber pointing to the client name. I just added it and worked flawlessly.
Thanks alot.