TransportError - cluster_block_exception when updating index

[punisherVX]

When trying to update an existing document in any index, the following error is thrown and the system keeps retrying the same thing over and over:

[ERROR]   : 2019-05-09 17:30:50,325 : dnsutils:updateAfStats:[54]:139996463884032   : TransportError(403, 'cluster_block_exception', 'blocked by: [FORBIDDEN/12/index read-only / allow delete (api)];')

This is especially wasteful on the sfn-domain-details index because none of the expired cache documents can be updated and we use points to continually ask AF for the info but can't write it.

[punisherVX]

This can be fixed during setup by adjusting the settings on each index to allow for deletions using

PUT af-details/_settings
{
  "index": {
    "blocks": {
        "read_only_allow_delete": "false"
    }
  }
}