Alejandro Fernandez created AMBARI-6533:
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Summary: Add API to get file log location in the task execution
output, currently hardcoded in UI
Key: AMBARI-6533
URL: https://issues.apache.org/jira/browse/AMBARI-6533
Project: Ambari
Issue Type: Task
Components: site
Affects Versions: 1.6.1
Reporter: Alejandro Fernandez
Fix For: 1.7.0
The Task Execution Output window hardcodes the path to the log files (stdout
and stderr). Because the prefix path is configured for each agent in
ambari-agent.ini, it's possible for each agent to have its own independent
value, and if the configuration changes, then historic logs will not be
referenced correctly.
The ask is to remove the hardcoded prefix from the UI, retrieve the log file
paths by calling an API, and store the log file path for each task.
Related item:
Once we have the API available, it would be possible to display the logs via an
HTTP server running on the agents.
Proposal:
The agent will advertise its prefix path when it registers, and the server will
store the path for each host in-memory.
When the server spawns a task execution on an agent, it will insert a record
into the host_command_role table, which will contain 2 new fields to store the
values for output_log and error_log, by retrieving the prefix path for the host
that the command will run on.
Then, the UI can simply query the API to display the log paths.
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