Re: Upgrade from Metron 0.4.1-rc to 0.4.1-rc4 problems.

[Laurens Vets]

On 2017-09-10 04:35, Otto Fowler wrote:
Laurens,
The fix for right now is to update the Metron escalation topic setting 
in
the Metron Config in ambari.
It should be in the rest tab.  I don’t think there is a management ui 
tab,
but if there is check there.

After changing the setting, you will be prompted to restart dependent
services, and after that
you should be all set.

This fixed it. I changed the default "escalation" to "metron_escalation" 
and both services start without issues now.

Please log a jira on this.

Done: https://issues.apache.org/jira/browse/METRON-1172

Thank you!

On September 9, 2017 at 21:27:13, Casey Stella (ceste...@gmail.com) 
wrote:

So the escalation topic is a new parameter for the REST service in 
0.4.1.
It appears that the ambari upgrade story is a bit weak.
Is it possible to modify /var/lib/ambari-agent/cache/
common-services/METRON/0.4.1/package/templates/metron.j2 and

- create a kafka topic called 'metron_escalation'
- replace the {{metron_escalation_topic}} with 'metron_escalation'

I'm honestly not sure if ambari will act more sensible after that. Does
anyone with more ambari-fu than me have any idea if this will work and, 
if
not, what we should direct people to do who are migrating?

On Sat, Sep 9, 2017 at 17:22 Laurens Vets <laur...@daemon.be> wrote:

Hello,

After upgrading from 0.4.1-rc (from last week) to rc4, both Metron
Management UI and Metron REST fail to start with an error related to
"METRON_ESCALATION_TOPIC="{{metron_escalation_topic}}"".

Does anyone know what might be going on here?

Metron Management UI Start output:

Traceback (most recent call last):
File
"/var/lib/ambari-agent/cache/common-services/METRON/0.4.1/
package/scripts/management_ui_master.py",
line 95, in <module>
ManagementUIMaster().execute()
File
"/usr/lib/python2.6/site-packages/resource_management/
libraries/script/script.py",
line 280, in execute
method(env)
File
"/var/lib/ambari-agent/cache/common-services/METRON/0.4.1/
package/scripts/management_ui_master.py",
line 67, in start
self.configure(env)
File
"/var/lib/ambari-agent/cache/common-services/METRON/0.4.1/
package/scripts/management_ui_master.py",
line 47, in configure
content=Template("metron.j2")
File
"/usr/lib/python2.6/site-packages/resource_management/core/base.py",
line 155, in __init__
self.env.run()
File
"/usr/lib/python2.6/site-packages/resource_management/
core/environment.py",
line 160, in run
self.run_action(resource, action)
File
"/usr/lib/python2.6/site-packages/resource_management/
core/environment.py",
line 124, in run_action
provider_action()
File
"/usr/lib/python2.6/site-packages/resource_management/
core/providers/system.py",
line 123, in action_create
content = self._get_content()
File
"/usr/lib/python2.6/site-packages/resource_management/
core/providers/system.py",
line 160, in _get_content
return content()
File
"/usr/lib/python2.6/site-packages/resource_management/core/source.py",
line 51, in __call__
return self.get_content()
File
"/usr/lib/python2.6/site-packages/resource_management/core/source.py",
line 142, in get_content
rendered = self.template.render(self.context)
File "/usr/lib/python2.6/site-packages/ambari_jinja2/environment.py",
line 891, in render
return self.environment.handle_exception(exc_info, True)
File
"/var/lib/ambari-agent/cache/common-services/METRON/0.4.1/
package/templates/metron.j2",
line 42, in top-level template code
METRON_ESCALATION_TOPIC="{{metron_escalation_topic}}"
File
"/usr/lib/python2.6/site-packages/resource_management/
libraries/script/config_dictionary.py",
line 73, in __getattr__
raise Fail("Configuration parameter '" + self.name + "' was not
found in configurations dictionary!")
resource_management.core.exceptions.Fail: Configuration parameter
'metron_escalation_topic' was not found in configurations dictionary!

Metron REST Start output:

Traceback (most recent call last):
File
"/var/lib/ambari-agent/cache/common-services/METRON/0.4.1/
package/scripts/rest_master.py",
line 83, in <module>
RestMaster().execute()
File
"/usr/lib/python2.6/site-packages/resource_management/
libraries/script/script.py",
line 280, in execute
method(env)
File
"/var/lib/ambari-agent/cache/common-services/METRON/0.4.1/
package/scripts/rest_master.py",
line 55, in start
self.configure(env)
File
"/var/lib/ambari-agent/cache/common-services/METRON/0.4.1/
package/scripts/rest_master.py",
line 43, in configure
content=Template("metron.j2")
File
"/usr/lib/python2.6/site-packages/resource_management/core/base.py",
line 155, in __init__
self.env.run()
File
"/usr/lib/python2.6/site-packages/resource_management/
core/environment.py",
line 160, in run
self.run_action(resource, action)
File
"/usr/lib/python2.6/site-packages/resource_management/
core/environment.py",
line 124, in run_action
provider_action()
File
"/usr/lib/python2.6/site-packages/resource_management/
core/providers/system.py",
line 123, in action_create
content = self._get_content()
File
"/usr/lib/python2.6/site-packages/resource_management/
core/providers/system.py",
line 160, in _get_content
return content()
File
"/usr/lib/python2.6/site-packages/resource_management/core/source.py",
line 51, in __call__
return self.get_content()
File
"/usr/lib/python2.6/site-packages/resource_management/core/source.py",
line 142, in get_content
rendered = self.template.render(self.context)
File "/usr/lib/python2.6/site-packages/ambari_jinja2/environment.py",
line 891, in render
return self.environment.handle_exception(exc_info, True)
File
"/var/lib/ambari-agent/cache/common-services/METRON/0.4.1/
package/templates/metron.j2",
line 42, in top-level template code
METRON_ESCALATION_TOPIC="{{metron_escalation_topic}}"
File
"/usr/lib/python2.6/site-packages/resource_management/
libraries/script/config_dictionary.py",
line 73, in __getattr__
raise Fail("Configuration parameter '" + self.name + "' was not
found in configurations dictionary!")
resource_management.core.exceptions.Fail: Configuration parameter
'metron_escalation_topic' was not found in configurations dictionary!