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[OpenStack Infra <1565801@xxxxxxxxxxxxxxxxxx>]

Reviewed:  https://review.openstack.org/327966
Committed: https://git.openstack.org/cgit/openstack/neutron-lbaas/commit/?id=56795d73094832b58b4804007ed31b5e896f59fc
Submitter: Jenkins
Branch:    master

commit 56795d73094832b58b4804007ed31b5e896f59fc
Author: Nir Magnezi <nmagnezi@xxxxxxxxxx>
Date:   Thu Jun 9 23:36:19 2016 +0300

    Implements ProcessMonitor in the haproxy driver
    
    The ProcessMonitor class will monitor spawned external processes.
    
    This patch enhances the HaproxyNSDriver class (v2) to utilize the
    external_process module in order to monitor and respawn the haproxy processes
    if and when needed.
    
    With this patch the LBaaS agent (v2) will load external_process related options
    in order to take a configured action when haproxy process dies unexpectedly.
    
    Closes-Bug: #1565801
    
    Change-Id: I420ca20b2620487909885e0e9f08dae60ebec2bf


** Changed in: neutron
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1565801

Title:
  Add process monitor for haproxy

Status in neutron:
  Fix Released

Bug description:
  Bug 1565511 aims to solve cases where the lbaas agent goes offline.
  To have a complete high-availability solution for lbaas agent with haproxy running in namespace, we would also want to handle a case where the haproxy process itself stopped. 

  This[1] neutron spec offers the following approach:  
  "We propose monitoring those processes, and taking a configurable action, making neutron more resilient to external failures."
   
  [1] http://specs.openstack.org/openstack/neutron-specs/specs/juno/agent-child-processes-status.html

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