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From "Alejandro Fernandez" <afernan...@hortonworks.com>
Subject Re: Review Request 31582: Alerts Need HA Mode Dynamic Property Support For WEB and METRIC
Date Sat, 28 Feb 2015 18:22:29 GMT

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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/31582/#review74683
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Ship it!


Ship It!

- Alejandro Fernandez


On Feb. 28, 2015, 4:39 p.m., Jonathan Hurley wrote:
> 
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> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/31582/
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> 
> (Updated Feb. 28, 2015, 4:39 p.m.)
> 
> 
> Review request for Ambari, Alejandro Fernandez and Nate Cole.
> 
> 
> Bugs: AMBARI-9848
>     https://issues.apache.org/jira/browse/AMBARI-9848
> 
> 
> Repository: ambari
> 
> 
> Description
> -------
> 
> Alerts for services that support a standard HA mode (nameservice and/or alias) need to
be able to understand how to calculate the correct server to contact. This means building
a dynamic key to use when discovering the URL to use for METRIC and WEB alerts.
> 
> The proposal is to add a new child element to the URL parameter:
> 
> {code}
> "high_availability": {
>   "nameservice": "{{hdfs-site/dfs.nameservices}}",
>   "alias_key" : "{{hdfs-site/dfs.ha.namenodes.{{ha-nameservice}}}}",
>   "http_pattern" : "{{hdfs-site/dfs.namenode.http-address.{{ha-nameservice}}.{{alias}}}}",
>   "https_pattern" : "{{hdfs-site/dfs.namenode.https-address.{{ha-nameservice}}.{{alias}}}}"
> {code}
> 
> *** NameNode Process was removed because it was a redundant check already covered by
the web client check ***
> 
> 
> Diffs
> -----
> 
>   ambari-agent/src/main/python/ambari_agent/alerts/base_alert.py 34aeff6 
>   ambari-agent/src/test/python/ambari_agent/TestAlerts.py ed95dc4 
>   ambari-server/src/main/java/org/apache/ambari/server/state/alert/AlertUri.java fe592a8

>   ambari-server/src/main/resources/common-services/HDFS/2.1.0.2.0/alerts.json 2910f8b

>   ambari-server/src/main/resources/stacks/BIGTOP/0.8/services/HDFS/alerts.json d51f0d8

> 
> Diff: https://reviews.apache.org/r/31582/diff/
> 
> 
> Testing
> -------
> 
> Deployed a cluster to ensure that existing alerts did not break. Upgraded to HDFS HA
mode and then took down each NN one at a time to verify correct alerts triggered.
> 
> [INFO] ------------------------------------------------------------------------
> [INFO] BUILD SUCCESS
> [INFO] ------------------------------------------------------------------------
> [INFO] Total time: 9.942 s
> [INFO] Finished at: 2015-02-28T11:33:54-05:00
> [INFO] Final Memory: 8M/81M
> [INFO] ------------------------------------------------------------------------
> 
> 
> Thanks,
> 
> Jonathan Hurley
> 
>


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