This API call worked to get the state for all regionservers: /api/v1/clusters/cluster_name/services/HBASE/components/ HBASE_REGIONSERVER?fields=host_components/HostRoles/state
I can filter out INSTALLED from this list to find the stopped one. Thanks! On Fri, Mar 24, 2017 at 12:34 PM, Ganesh Viswanathan <gan...@gmail.com> wrote: > Thanks, that explains the behavior when I shut down the regionserver > process and see the CRITICAL alert. > > What I am trying to do is setup a WARNING alert for the case when a single > "HBase Regionserver Process" is down and CRITICAL alert when two or more > regionservers are down. I am also trying to get the hostname where the > regionserver is down in the warning case. > > Only the "HBase Regionserver Process" alert gives the name of the host > impacted (I don't get these from "RegionServers Health Summary" and > "Percent RegionServers Available"), hence I am trying to suitably modify > this alert for my use-case. Is there a better way to get the regionserver > host impacted from Ambari API when RegionServers Health Summary fires at > WARNING level? > > > > > On Fri, Mar 24, 2017 at 12:27 PM, Jonathan Hurley <jhur...@hortonworks.com > > wrote: > >> I'm not sure what you mean when you say "turn down" the process. If you >> are shutting down the process, then the port is released and the alert will >> not be able to make a socket connection. You will get a CRITICAL right >> away. The values in the alert are a round-trip-time coupled with a socket >> read time. For the warning, it will attempt to make a socket connection and >> if it succeeds and releases in under 1.5 seconds, then there's no warning. >> Because you set the CRITICAL value to 3600s but stopped the process, it's >> not going to wait 3600 since it can detect much faster that the port is not >> open for a socket connection. >> >> On Mar 24, 2017, at 2:40 PM, Ganesh Viswanathan <gan...@gmail.com> wrote: >> >> I am using Ambari's "HBase Regionserver Process" alert with 1.5s as >> WARNING threshold and 3600s as CRITICAL threshold. However, when I test >> this by turning down the regionserver process, the alert fires off as >> CRITICAL directly. Is this a bug? >> >> I am using HDP2.4 with Ambari 2.2.1.0: >> https://docs.hortonworks.com/HDPDocuments/Ambari-2.2.1.0/bk_ >> Ambari_Users_Guide/content/_hbase_service_alerts.html >> >> >> Thanks, >> Ganesh >> >> >> >
