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From "Oleg Nechiporenko (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AMBARI-14898) Alerts: Ability to customize props and thresholds on SCRIPT alerts via Ambari Web UI
Date Thu, 04 Feb 2016 07:33:39 GMT

    [ https://issues.apache.org/jira/browse/AMBARI-14898?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15131872#comment-15131872
] 

Oleg Nechiporenko commented on AMBARI-14898:
--------------------------------------------

{noformat}
[INFO] Ambari Web ........................................ SUCCESS [01:11 min]
[INFO] Ambari Metrics Collector .......................... FAILURE [01:31 min]
{noformat}

> Alerts: Ability to customize props and thresholds on SCRIPT alerts via Ambari Web UI
> ------------------------------------------------------------------------------------
>
>                 Key: AMBARI-14898
>                 URL: https://issues.apache.org/jira/browse/AMBARI-14898
>             Project: Ambari
>          Issue Type: Task
>          Components: ambari-web
>    Affects Versions: 2.4.0
>            Reporter: Oleg Nechiporenko
>            Assignee: Oleg Nechiporenko
>            Priority: Critical
>             Fix For: 2.4.0
>
>         Attachments: AMBARI-14898.patch
>
>
> Script alerts, such as *Ambari Agent / Host Disk Usage* needs to have some metrics Externalized.

> The Usage screens relies on the alert_disk_space.py script to collect metrics such as
Disk utilization (percentage) and directory being checked. 
> The problem is that the directories being check in this script are: 
> 1. ROOT ("/") 
> 2. /usr/hdp 
> If ROOT is OK, then "/usr/hdp" is checked subsequently. However if ROOT is NOT OK (>80%
utilization) then "/usr/hdp" is ignored and the "CRITICAL" tag applies to ROOT. 
> This would work on a OOTB standard cluster. However, many users, have Partitions for
the hadoop directories. In this instance, "/" is static, no new content will be added. In
this instance being at 80 or 90% is OK, this directory will never grow beyond that. 
> "/usr/hdp" is a separate partition that grows in time. 
> Based on the above described check, the 80% of the root partition will trigger a "CRITICAL"
message, although the "/usr/hdp" partition is OK. 
> The selection of what directory is being checked should be EXTERNALIZED to a configurable
property to avoid these kinds of misleading messages. 
> CONVERSELY --- what constitutes "OK" "WARN" or "CRIT" (the percentage that triggers these)
should be left up to the user, not hardcoded in the script. 
> This is a request to externalize the directories that should be checked, as well as the
Percentages into an external configurable property.



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