Details
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Bug
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Status: Resolved
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Major
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Resolution: Fixed
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None
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None
Description
As of Ambari 2.7, any changes to /var/lib/ambari-server/resources are not
pushed to ambari-agents cache (/var/lib/ambari-agent/cache/. This is not an
issue in Ambari 2.6.
Also, if you remove files or need to wipe ambari-agent cache(s), the files
will never repopulate.
Another example, is custom ambari host_scripts not being pushed to the ambari-
agents as should be done based on this article, and works in Ambari 2.6:
<https://community.hortonworks.com/articles/38149/how-to-create-and-register-
custom-ambari-alerts.html>
To reproduce:
- 1\. deploy hosts with Ambari 2.7.3 and have them connected to an ambari-server
- 2\. turn on DEBUG logging in ambari-agent
- 3\. go to an ambari-agent. Notice that there is no /var/lib/ambari-agent/cache/host_scripts/.hash but there are .hash files for the stack directories.
- 4\. on the ambari-server, add files into /var/lib/ambari-server/resources/host_scripts
- 5\. restart ambari-agent and notice that their host_scripts directory is never updated and .hash is never generated
- 6\. check ambari-agent.log and notice that other paths were checked (by FileCache.py) but host_scripts were not
