ZooKeeper has a telnet style interface for periodic querying. You could also use Exhibitor and query it's REST API periodically. I should probably add alerting to Exhibitor for this kind of thing.
-JZ On 5/18/12 10:34 AM, "Adam Rosien" <[email protected]> wrote: >We have a 5-member 3.3.3 cluster. One of the node's configurations was >accidentally changed, and that node went into "standalone" mode, thinking >it was a single-node cluster. However, all our zk clients still had the >address of this server, and when connected obviously got missing or wrong >data. > >Is this situation avoidable somehow? > >.. Adam
